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Some home improvements may visually improve your home. However, they may not fix your comfort level. If your house is in order, your mind is in order. Heating and cooling system manufacturers continue to design and incorporate technologies that may collectively improve your overall indoor comfort. HVAC systems that include variable-speed options and advanced HVAC controls provide additional benefits for homeowners who prioritize indoor comfort.

For example, HVAC equipment with variable speed fans automatically adjusts the amount of heated or cooled air blown through the vents into your indoor spaces. When your interior spaces reach the pre-set temperature on the thermostat or HVAC control system, the lower speed may maintain that set temperature longer than if the system turns off. This allows for steady, consistent comfort in your home. Peace of Mind. But in typical fashion, a heating or cooling system often stops working at the worst possible time…the weekend, holidays, or when you simply want to relax. Living with a failed HVAC system can be inconvenient and very uncomfortable!

When you have an aging, inefficient system, abrupt breakdowns and continuous repairs may start to add up - both financially and emotionally! To keep repair costs under control, you may want to establish a repair cost cutoff point - meaning that you will replace your heating and cooling system if repairs cost more than your set amount. Because no matter how beautiful the floors and cabinets are, no one wants to too hot or too cold in their home. It comes on the moment the indoor temperature set on the thermostat requires cooling performance, and then runs quietly and efficiently when needed.

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It is estimated that the air you breathe inside your home is more polluted than the air outside your home. Indoor air filtration can help maintain the efficient operation of your cooling system by removing a wide range of airborne dust and reducing airborne particulates that can build up on the surface of the cooling coil. It is important to change your filters regularly. As filters become loaded with particulates, your system has to work harder, increasing your cooling bills.

Want to learn more? April showers may bring May flowers, but to those who live in mild areas of the country, it can also mark the beginning of air conditioning season! Birds are chirping, flowers are blooming and warm sunshine may be in your near future. What a perfect time to share some fun facts about air conditioners! Cue the sounds of spring. In school, kids learn that one ton is equal to 2, pounds. Logically, if you had a 4-ton air conditioner or heat pump, you would expect your 8,pound piece of equipment to arrive on a flatbed truck! But thank goodness that is not the case! The tonnage or weight assigned to air conditioners and heat pumps has to do with the fact that people used to cool spaces with blocks of ice.

Before modern air conditioning, people rated their capacity to cool indoor spaces by the amount of ice that melted. When ice melts, it pulls heat energy from its surroundings. The heat is transferred to the ice, which causes it to melt. And thanks to modern marvels, the tons of cooling have nothing to do with massive blocks of ice. Air conditioners and heat pumps use the basic laws of physics and the refrigeration cycle to maintain a comfortable indoor temperature when the outdoors heat up. The refrigeration cycle is based on the physical principle that a liquid expanding into a gas extracts or pulls heat from its surroundings.

You can test out this basic concept for yourself with a water faucet and your hand! Humidity is the amount of water vapor in the air. The more water vapor in the air, the higher the humidity. Air with higher humidity has an increased amount of water vapor. As a result, sweat may not evaporate as quickly as it would with a lower humidity level. This phenomenon may make us feel hotter than the actual temperature because evaporation is slowed. Going back to the wet hand experiment - if the humidity level is high, it may take longer for the air to absorb the extra moisture on your wet hand.

This explains why it feels hotter when the humidity levels are high. Likewise, very low humidity can make us feel cooler than the actual temperature. This happens because the dry air helps moisture evaporate more quickly than usual. So how can an air conditioning help you feel more comfortable in your home? The moisture collected by the evaporator coil goes to a drain and then it is sent outside, away from your home.

But air conditioners and heat pumps are not meant to control humidity independently. It just happens to be an incidental by-product of the refrigeration cycle! Cramer, a leading figure in the textile industry, installed the first air conditioning system in the south. His intent was to create ideal humidity levels at his Chronicle Cotton Mills in Belmont, NC in order to ease the process of spinning yarn.

The business owner and trained engineer was credited with designing and equipping over cotton mills, held 60 patents, and pioneered humidity control and ventilating equipment. Air conditioning is continuously named as one of the top inventions in modern history. Most warm-weather states can give the nod to the air conditioner for their increasing populations.

Can you imagine what life must have been like during those southern summer days? It was certainly different without an air conditioner! Old photographs often depicted people sitting on those expanded porches, hoping to catch a cool evening breeze. Outdoor living became part of the culture. However, people started to retreat indoors once air conditioning technology became more common.

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By the s, more than one million room air conditioning units had been sold. By , the U. Thank goodness! Basic Refrigeration Cycle. Charlotte: American Cotton Manufacturers Association, Census Bureau. Census Bureau - Air Conditioning. Washington D. Department of Commerce, Smart technology is meant to simplify our lives. While home heating and cooling equipment has typically been designed with the latest technology available, there was never a need for smart communication - that was left to the thermostat or control system.

But as consumer behavior changes and home automation becomes more ingrained into our lifestyles, particular heating and cooling equipment manufacturers are responding! Some homeowners want to keep their basic thermostat. Others find that when purchasing a new premium HVAC system, they are limited to one specific, and perhaps expensive, smart thermostat or control system.

So what happens when you incorporate the communicating technology that was typically located in the thermostat directly into the heating and cooling equipment? The result is that you may be able to keep your current thermostat or control system and help your entire HVAC system cost-effectively operate at peak performance.

Traditionally, the equipment that creates the comfortable temperature in your home has had one function — to heat and cool your indoor spaces! It was the thermostat or control system that made it appear that the HVAC system was customizing energy-efficient performance. Rather than relying on the circuit board in the thermostat which is connected to an inside wall in a home , the communicating technology circuit board securely installed in the indoor unit of the energy-efficient heating and cooling system uses a smart home algorithm to gather HVAC system performance data.

It uses this data to automatically make adjustments that may reduce the amount of energy used to heat or cool your home. It moves the required technology from the thermostat or control system to the HVAC equipment. This technology is designed to create an intelligent indoor comfort system capable of customizing energy-efficient performance.

Upon installation, it receives a simple signal from the thermostat and intelligently distributes operational messages between the indoor and outdoor components of a central heating and cooling system. With this intelligent HVAC technology added directly to the indoor equipment, you may find that you have many thermostat or control system options or even keep the one you have already invested in! The choice is yours! The smart technology in the HVAC equipment is designed to take care of the rest! If you are considering upgrading your HVAC equipment or merely the thermostat or control system, it is best to seek the guidance of a licensed professional HVAC dealer.

They will be able to assess your indoor comfort equipment and guide you to the optimal thermostat or control system for your needs. A heat pump transfers heat from one place to another. This allows a heat pump to provide year-round indoor comfort — no matter what the season is. In the warmer months, the heat pump can act as an air conditioner - drawing out interior heat and humidity, and redirecting it to the outside.

During colder months, heat from the outdoor air is extracted and transferred to the interior of your home. Science is amazing! For example, when there is a temperature difference such as your This is why you start to feel cold! That's the job of the refrigerant in a heat pump. Colder months: Heat pumps pulls heat from the outside air and transfer the heat to your home. Warmer months: Heat pumps pulls warm air and humidity from inside your home and transfer it outside, leaving cooler air indoors. Heat pumps have been used for many years in locations that typically experience milder winters.

However, air-source heat pump technology has advanced over the past five years, enabling these systems to be used in areas with extended periods of subfreezing temperatures. To get a better idea of how your air is heated or cooled, it helps to know a little bit about the parts that make up the heat pump system. A typical air-source heat pump system is a split or two-part system that uses electricity as its power source. The heat pump works in conjunction with the air handler to distribute the warm or cool air to interior spaces.

Control board : Controls whether the heat pump system should be in cooling, heating or defrost mode. Reversing valves : Change the flow of refrigerant which determines if your interior space is cooled or heated. The accumulator : A reservoir that adjusts the refrigerant charge depending on seasonal needs. Heat strips : An electric heat element is used for auxiliary heat.

This added component is used to add additional heat on cold days or to recover from lower set back temperatures rapidly. Ducts : Serve as air tunnels to the various spaces inside your home. Thermostat or control system : Sets your desired temperature. If you have a heat pump outside your home, the air handler is likely the indoor component comprising your two-part, split system that keeps the indoor temperature of your home comfortable all year long. Most often, air handlers are located in the attic, basement or a dedicated closet, and may closely resemble the shape of a gas furnace. What would we do without delivery!

Depending on the design of your home, an air handler may be a principal indoor component of your heat pump system.

A look Inside an Air Conditioning and Refrigeration System

Depending on the season, the circulated air is either cool or hot. Your air handler assists in regulating the circulation of indoor air and the temperature of the air in your home that you have set on your thermostat or control system. Your air handler consists of an evaporator coil, blower motor, air filter and the electrical and electronic components required to deliver enhanced levels of indoor comfort.

Blower Motor: The blower moves the air to the connected ductwork to circulate it into your indoor spaces. The blower motor may be a single speed, multi-speed or variable speed model. Filter: Before your air conditioned or heated air enters your ductwork, it passes through an air filter. The filter is intended to minimize the number of particulates circulated throughout your home, accumulate in the duct work, and land on the indoor components of your heat pump system.

Optional Electric Heat Strips: Provides an auxiliary, electric heating option when conditions arise that require activation. Even if your air handler is properly sized with your outdoor heat pump, a licensed professional HVAC dealer should ensure that the air supply and movement through the air handler are balanced. The cabinet system can be installed at ground level, in a crawl space or on a rooftop. With a packaged system, you can have space for those new shoes and have the space to be comfortable in your home!

Packaged units have the main heating and cooling components in a single-boxed cabinet that sits outside the home. Packaged units come in multiple forms:. For Centuries, scientists, inventors and outside-the-box thinkers have been trying to manipulate substances in order to alter the temperature of the indoors! Gorrie was granted the first U. Patent for mechanical refrigeration in Modern air conditioning appears to be an evolutionary invention that was built upon a series of successful and not so successful concepts. It took 80 years from Dr. But as they say, history has a way of repeating itself.

As a result, R22, the standard residential air conditioner refrigerant, was included in the Montreal Protocol list of substances that were to be phased out of production over time for new air conditioners and heat pumps. According to the U. Under the Protocol, which was amended four times since , total United States HCFC production and consumption should be phased out by As a result, the Montreal Protocol and amendments allowed for a step-by-step phase out. This phased program provides homeowners the option of switching to chlorine-free refrigerants when they see the need to replace their current air conditioner or heat pump.

Although the agreement was ultimately signed in , the HVAC industry had to prepare for the mandated changes. Companies had to develop alternate refrigerant technologies, engineer new designs to accommodate substance characteristics, realign manufacturing to accommodate changes, and re-train dealers and technicians on the updates.

This would take some time, but RA refrigerant, a hydrofluorocarbon compound HFC , was soon considered to be the most common alternative to R By January 1, , there was a ban on the production and import of R EPA regulations require a ban on the production and import of R refrigerant by January 1, After , any air conditioning or heat pump system using R that requires servicing will have to depend on potentially expensive R stockpiles or reclaimed refrigerant.

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However, in the event that that equipment needs to be charged with refrigerant, there will be difficulties. As stated, modern air conditioning has been an evolutionary invention that was built upon a series of successful and not so successful concepts. Scientific discoveries, technological advancements, and even environmental policies and politics will continue to have an effect on the HVAC industry. Because of the global warming potential of many HFC refrigerants, the latest amendment to the Montreal Protocol, the Kigali Amendment, has proposed to phase-down the use of refrigerants such as RA.

Some products with this next generation refrigerant have already been introduced in the United States. In the meantime, homeowners replacing their aging air conditioning and heat pump systems with new RA equipment will know that they are purchasing a chlorine-free option, as well as potentially increasing the energy-efficiency level of the air conditioner or heat pump for their homes.

Department of State. Federal Register. In fact, the average retail price of electricity has increased from The answer may lie with a variable speed technology central heating and cooling system! When one or more of these variable speed technology features is applied to your HVAC system, you may be able to spend less on utility costs without sacrificing your indoor comfort level.

Variable speed technology refers to the type of compressor in your air conditioner or heat pump. The compressor is the heart of your air conditioning or heat pump system. It creates the cooling capacity for your system. This feature allows for various levels of output depending on your cooling demands — full capacity for hot summer days or reduced capacity for milder days.

It is a great energy-efficient option when compared to a single-speed unit. Variable speed technology can also apply to the type of blower motor located in the air handler or gas furnace. A variable speed blower motor can operate at various speeds to precisely control the amount of airflow throughout your home.


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If you were in a one-mile bike race, would you take the route with one hill or multiple hills? Which would require more energy? It takes a great deal of energy to keep biking up multiple hills. Variable speed technology allows for a more consistent path. Once your HVAC system reaches the desired indoor temperature, the variable option more precisely adjusts to the less demanding environment, minimizing the capacity required to maintain that temperature compared to a single-speed system.

A variable speed system may run longer than your traditional HVAC system, but at a level that requires less energy. This slow and steady operation offers some additional comfort benefits when compared to a single speed unit. Talk to your professional licensed HVAC dealer to see if variable speed is right for your home. If you drive your car up hill, both ways, on tires with low air pressure, would you get the same miles-per-gallon MPG as you would if you were driving on a straight road, at a constant speed, with perfectly inflated wheels?

Probably not. If the installation or usage varies from the standard test conditions, the performance and efficiency of an air conditioner or heat pump may be impacted. Air conditioners and heat pumps, like automobiles, are tested within set laboratory conditions with properly matched system components. Each cooling component plays a vital role in making sure that you enjoy a comfortable indoor environment in your home. A complete cooling system may be composed of:. A licensed or professional contractor should be able to verify properly matched systems and SEER rating by providing you with a Certified Reference Number or a Certificate of Certified Product Performance.

If you are considering replacing just the outdoor portion of your cooling system, be sure to discuss compatibility and efficiency with your licensed or professional HVAC dealer. Yet, when your cooling system is not being maintained as recommended or simple home energy-efficient solutions are ignored, your energy bills may still be higher than you would like. To keep your central cooling system at peak performance, a licensed professional HVAC dealer should perform routine maintenance services.

During an inspection, your dealer may identify any airflow problems, system leaks, coil issues or potential concerns that could impact your system from operating at peak performance. Typical professional maintenance services that may keep your cooling system at peak performance may include the following actions:. Homeowners should also keep in mind additional conditions that may impact energy costs. These factors can influence the ability of your cooling system to perform at its designed efficiency level. Some conditions include, but are not limited to:. Cooling system manufacturers continue to pursue individual technologies that collectively may improve overall HVAC system efficiency.

Advancements, including refrigerant, variable-speed drives, advanced controls, and additional mechanics that simplify installation, will continue to impact the energy costs associated with cool, indoor comfort. To discover current HVAC technologies available that may improve the energy efficiency of your home, discuss the various options and potential cost saving with your licensed professional HVAC dealer.

Vehicle and Field Emissions Testing. Appliance and Equipment Standards Rulemakings and Notices. But when that time comes, your wallet may not be ready! HVAC financing helps spread the cost of new equipment or entire systems over a predetermined amount of time. Why dip into savings you may have earmarked for another purpose, add to an existing credit card balance or even consider a home equity line of credit?

HVAC financing can be an effective means to fit a replacement system or equipment into your budget without breaking the bank. It is important to review financing details to make sure you understand your financial responsibility. Base your buying decision on long-term comfort and energy-efficiency. A high-efficient system can also allow you to feel the difference compared to your old unit.

Impactful innovations such as variable-speed fans, variable-speed compressor and heat exchanger technology have ushered in a new era of HVAC operation that enhances indoor comfort and performance. While your frugal urges may tempt you to opt for a base or minimum efficiency system, the least expensive option may not be the most cost effective solution considering the life cycle of a new, energy efficient system.

High-efficient systems can realize uncompromised indoor comfort throughout your home, offer reoccurring savings on your monthly utility bill, and possibly increase the value of your home. Moreover, consumer financing can often cover the cost of an extended service plan. Extended service plans may minimize additional out of pocket expenses you face for the term of the service plan. Ask the dealer to provide complete information before you make a decision.

Every once in a while with indoor comfort, you CAN have it all! Precise, energy-efficient indoor comfort for every month of the year is like having your cake and eating it too! When properly installed and configured, a dual fuel technology indoor comfort system offers the incredible combination of year-round comfort and energy-efficient performance!

A dual fuel system may come in the form of a packaged unit or a split system with two energy sources: the electric heat pump and a gas furnace. Dual fuel technology combines the cooling and heating performance that you get from a heat pump with the consistent heating capacity of a gas furnace. What makes this system so precise and energy efficient for heating is that it seamlessly alternates between the two energy sources for heating comfort, depending on your specific outdoor conditions.

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When the thermostat or control system calls for cool air, the heat pump unit functions just like a central air conditioner, it is designed to keep your home cool and comfortable even on extremely hot days. When your home needs moderate heating output, the heat pump reverses the refrigerant flow to provide warm air in your home and operates like a typical heat pump.

In a dual fuel system, if the heating demand exceeds the preset heating capacity of the electric heat pump, the heat pump pauses, and the gas furnace takes over until the indoor temperature reaches the desired temperature on your thermostat or control system. The system's switch point from the heat pump to the gas furnace can be set on the thermostat or control system by you or your dealer. Even on extremely cold days in winter, your dual fuel system is designed to provide energy-efficient, reliable, and consistent heat.

Yet, heat source efficiency is only part of the equation. The cost of electricity and natural gas in your location can affect the cost-effectiveness of a dual fuel system. For example, in the annual average electricity price in Hawaii was estimated at When a dual fuel system's switch point can be determined by you or your dealer, the specific energy source pricing can be incorporated into the cost and efficiency equation. If switching from the heat pump to the gas furnace reduces the time required to get to your set temperature, your energy cost of operation may decrease, and your comfort level may increase.

Although the electricity may cost less than the natural gas in some areas, it may cost you more if your heat pump has to operate longer to meet your indoor temperature needs. The flexibility of using a heat pump and a gas furnace may provide the homeowner with energy cost savings. However, it is important to learn the utility pricing options from your local utility provider s and then discuss the potential savings a dual fuel system might offer with your licensed professional HVAC dealer.

If you are looking to replace your air conditioner with a heat pump, your professional licensed HVAC dealer may be able to upgrade your system configuration so that your new heat pump works in conjunction with your existing furnace system. If you are not currently utilizing natural gas as a heating source but it is an option is your area, homeowners interested in dual fuel systems may be able to add a high-efficiency gas furnace.

The gas furnace would be the secondary heat source instead of using the heat pump's electric heat strip when the temperatures drop. To find out whether a dual fuel system is an option for your home and how you may benefit, talk to your professional licensed HVAC dealer. Department of Energy. Air-Source Heat Pumps. Energy Information Administration. Energy Information Association. Factors Affecting Electricity Prices. Air-source heat pumps and gas furnaces are the common types of central residential heating systems.

When installed and functioning properly, they can keep the indoors warm with the outdoor temperature start to fall. The higher the HSPF, the more efficient the heating performance of the heat pumps. This measurement describes how well fuel is consumed to produce heat by a gas furnace. As the AFUE rate increases, the efficiency of your gas furnace also increases. The answer depends on the type of crowd you hang around with!

Here are ten questions that often come up:. Are you ready to do some simple detective work? Although a heat pump provides both heating and cooling to your home, there is a simple way to determine if you have a heat pump by testing the unit in heating mode. Once you feel the heat coming from your return vent, head outside to observe that metal cabinet. Case closed! Since your heat pump is designed to heat and cool your home, it may be operating year-round. Many dealers offer pre-season specials on inspection packages during their typical slow times of the year.

Seasonal preventive maintenance on your heating and cooling system may guard against many unexpected failures and could maximize the lifecycle of your heating or cooling unit. You have tried to keep your budget in check, but you also want the temperature to be comfortable in your home! Deep in your soul, are you wondering if the source of your high utility bill is your inefficient heating or cooling equipment?

Why do you feel guilty every time you adjust the temperature on your thermostat or control system? As you may have heard, some things get better with age — wine, jeans, and maybe you! However, just like you, HVAC equipment may lose efficiency over time if not appropriately maintained.

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Routine maintenance can play a big part in maximizing the longevity and maintaining the energy-efficient performance your equipment. Over time, lapses in annual maintenance may impact the delicate balancing act between HVAC equipment, air flow, and mechanics. If one or more components are not functioning as designed, the entire system may be affected and impact longevity and efficiency. Routine maintenance may extend the life of your HVAC equipment and possibly prevent minor issues from turning into expensive major problems over time.

If your HVAC equipment was installed in , the Pittsburgh Steelers had just won their fifth Super Bowl, and average residential, retail price for electricity was But in the average residential electricity price per Kilowatt hour was Fortunately, technology improvements have resulted in higher energy efficiency ratings for new indoor comfort systems.

You may think that you are saving money by putting off the installation of new heating or cooling equipment, but it may be costing you more than you think. Energy-efficient features, such as variable speed fans, variable speed compressors, and heat exchanger technology have also ushered in a new era of HVAC equipment. Not only do these features offer the benefits of increased energy efficiency when compared to some older or base models, but they may also help keep your budget in check and greatly improve your overall comfort level in your home.

But high-efficient HVAC equipment with innovative technology is only one piece of the puzzle. If other key energy-efficient solutions are ignored, your energy bills may still be higher than you would like. Additional factors that can influence heating and cooling efficiency levels include, but are not limited to:. If you are curious how your indoor heating and cooling equipment may be affecting your monthly utility bill or want to learn ways to improve efficiency, talk to your local professional licensed HVAC dealer. Retrieved from U. So when it comes to home cooling — a slow and steady option may win the race on energy-efficient, refreshingly cool indoor comfort!

Electricity usage usually surges each time an HVAC system turns on. The more often it has to turn ON, the more electricity it uses. Slow and steady cooling may help you save on your cooling energy costs! Two-Stage: Two-stage compressors offer two capacity options.

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Variable Speed: Variable speed compressor technology allows the unit to run at the speed that best meets your comfort needs coupled with energy-efficient operation. A variable speed air conditioner or heat pump is designed and engineered specifically to provide the output needed at the lowest consumption of power. Systems with variable speed technology may run at full capacity on hot summer days or reduced capacity for milder days.

Once the indoor temperature you set on the thermostat or control system is achieved, the variable speed unit will strive to operate at the lowest speed possible to deliver consistent, energy-efficient comfort in your home. Because a variable speed air conditioner or heat pump can adjust capacity for demand, it may run longer than a single-stage unit under the same conditions.

A two-stage or variable speed system may run longer than your traditional single speed HVAC system, but at a level that requires less energy. But in addition to energy savings, this slow and steady operation offers some additional comfort benefits when compared to a single-speed unit:. Extended Dehumidification Process — Heat pumps and air conditioners use the refrigeration cycle process to cool your home.

During this process, moisture, in the form of humidity, is removed from the indoor air in your home. Longer run times create the opportunity for more indoor air to be dehumidified. This may improve the balance between temperature and humidity, providing you with more comfortable interior air. Consistent Indoor Comfort — Two-stage and variable-speed technology may minimize the temperature swings often found with single-stage equipment.

Rather than shutting down until your thermostat or control system recognizes the need for cooler indoor air, the optional run speeds prolong the set temperature of your spaces. This allows for a more steady and consistent comfort in your home when compared to the temperature fluctuations that can be associated with a single-stage compressor. Air Filtering — The extended run time afforded by two-stage or variable speed units may increase the amount of time for the air to circulate and interact with filters or additional air quality system components.

While extended run times can be beneficial with a two-stage or variable speed unit, single-stage air conditioners should cycle ON and OFF as demand requires. If you find that your single-stage air conditioner or heat pump is experiencing extended run times in comparison to normal operation, it may be a signal to contact your local licensed professional HVAC dealer for a system evaluation. US Department of Energy. MYTH: The bigger the air conditioner, the better it will cool my house. BUSTED: Oversize units may create bursts of cold air, tricking thermostats or control systems into shutting off the system before the entire house reaches the desired temperature.

When an air conditioner is sized and installed properly by a professional HVAC technician, it will cycle on and off at various intervals to maintain the temperature setting on the thermostat or control system. It is not unusual for an air conditioner to operate using long on and off cycles. In fact, this is preferred for energy efficient performance and humidity removal. When a unit is not properly sized and installed, the unit may cycle on and off quickly and quite frequently.

This situation may not allow the unit to operate as efficiently as it was designed and indoor comfort is risked because the unit cannot remove enough humidity. While a bigger unit may seem to offer powerful cooling performance, a unit sized properly is the best option for long term durability and comfort. MYTH: Setting a thermostat or control system to an extreme cold temperature will cool the house faster!

BUSTED: If the indoor temperature us 78 degrees, setting your thermostat to 40 degrees, for example, will not cool your house any faster than setting it at 70 degrees. Once the system starts, it will reach the designated temperature sometime thereafter. MYTH: Price should be the deciding factor when purchasing an air conditioner! If this shop is worth anything they will take your car, verify your complaint and repair it correctly. If they are not willing to do this then take your car to a different shop and report this one to your state's attorney general.

My ac in my Ford F 4. When the AC is on, or the heat, the vehicle idles fast. I used one of those gauges that comes with cans of freon to check my pressure and it looked OK. Any guidance would be greatly appreciated. Answer: There are many things that can cause your ac system not to cool properly.

The first thing that I recommend you do is take your truck to a repair shop to have them check the AC. Those gauges on the little cans are a big scam. In order to know much about the AC system you have to know the pressures of both the high side of the system and the low side of the system, and how often the clutch is cycling if it is a clutch cycling system. Just because the can gauge says it is OK does not mean that it really is. The most likely cause of your auto air con problem is either an incorrect refrigerant charge or an electrical problem.

You could have a bad pressure switch or even a bad relay or compressor clutch. It is normal for the engine to rev up a little when the AC is on so that is probably nothing to worry about. When I start the car and turn on the air conditioning the cabin fan starts off at full volume, then starts to decrease in volume, as time goes on til almost no volume, but the air is still cold? Answer: There are two things that come to mind first.

The first is that you might have a plugged or dirty cabin air filter. Not all cars of this year have them so check your owner's manual. If you don't have a manual then you can see if there is a removable plastic piece under the dash. That should be where the air filter is located. If that does not fix the problem, then there is a good chance that you have a plugged evaporator.

Condensation builds up on the evaporator and eventually it can start growing mold which will build up and plug it. Most auto parts stores can get you something to get rid of it. I have a '97 Dodge Stratus, 2. Also it's emitting a foul odor that is all along the lines of a dead rodent, wet dog, and garbage that's been sitting in the sun for a few hours.

Again, the air still works, but I really hate the smell and of course the rattling noise. Answer: Hi, Ethan. Thanks for submitting your auto air con problem. The most likely cause of your problem is your fan. I can't think of anything else that would have those symptoms other than the blower motor. The smell you are getting is likely caused by some type of mold that has built up inside your auto air conditioning system or on the evaporator. Most parts stores have chemicals that you can buy to remove it.

If you cannot find any, then you should check with your dealer or a auto air conditioning repair shop. I have a dodge ram quad cab 4. I just replace the AC condenser fan on it cause it went out. Now when I cut the AC on while driving and come off the gas and come to a stop the truck falls dead. I have checked fuses, no lights are on, or anything. This has stumped me. Could you please help? Answer: I believe can help some. There are several things that might be happening here. If your idle air control valve IAC is not working properly it could be causing this problem. Also, your cars computer could be causing the problem or it could just be a wiring problem somewhere.

Since you have recently done some work to your car the first thing you should do is re-check that you have everything connected properly. It is possible that something was just left disconnected. You trucks computer is supposed to turn the idle up when you have your AC on so it does not die like it has been doing. The hard part of this auto air conditioning repair is figuring out why. I have a Ford Explorer which just had the evaporator core, line and condenser replaced. The system blows cold air, but when driving for a long time on the freeway the air does not blow very strong.

This only happens on long trips. The fan sounds like it is blowing but is not coming out the vents. Can you help. Answer: The first thing to check is your cabin air filters. If they have not been replaced in a long time you should just replace them. I have seen them so dirty that air would hardly flow through them and caused the same problem that you are having.

Be sure that there is nothing clogging the cowl the part at the base of your windshield on the outside that has slits in it for air to get in and make sure there is nothing blocking the passenger side footwell. If none of this helps, you might have a problem with one of your air divertor doors. If it is not working correctly it might not be letting enough outside air in. This is not likely but possible.

If the problem still persists, then you should have it looked by an auto air conditioning repair shop. With the controls on Defrost and Foot with the dial turned all the way to hot, I can still hear the part of the AC in front of the engine spinning on. I believe this is hurting my gas mileage. I cannot get it to turn off. How can I turn it off?? Answer: This is simply what AC systems are made to do. When you turn your controls to defrost the AC actually does come on, but it does this to dry the air not to cool it. Even though the AC system is running, it actually does not cool anything because the heater is on.

If you don't want your Ac system to run, you cannot have it on defrost. Any Suggestions? Answer: I'm a little confused as to what the problem is with your auto air conditioner. The high and low sides should not balance. With the AC on and the car running the high pressure side should be much higher than the low pressure side. The only time when the two sides should balance out is when the engine and AC system are off and the car has sat for a few minutes.

If it does not balance out then there is probably a restriction somewhere in your system. When it comes to AC systems, I always recommend having your auto air conditioning repairs done by a good AC technician. I know this is probably not what you want to hear, but it would save you a lot of time and probably some money too. Several years ago, I got in my car and turned on the heater and turned the temp control on the dash board over to hot.

As I was turning the control to hot I felt something snap. It was stuck on cold and remained that way for sometime. Eventually it flipped itself over to hot. Even if the AC is on, the air is hot. Right now it's stuck on cold, which works since it's summer time but if I were to turn the fan too high, it will flip back to heat. Com, the 1 online heating and air conditioning resource. Discover nearby programs and learn about the typical job duties of an HVAC tech, where you can work, how high your salary could be, and how to get certified!

Course Information.

Repair your heating, ventilation, and air conditioning with filters, fans, motors,. It is worth 25 points. Identify important HVAC controls, including. Hvac general training air conditioning 1 2. Two general types of air conditioning cooling. You can use your notes. Find out how HVAC training schools can help you get started in the hands- on trade of heating, ventilation, and air conditioning technology.

Certain types of construction licenses are regulated on a state- level in the state of Virginia. Heating, ventilation, and air conditioning HVAC is the technology of indoor and vehicular environmental comfort. Access to Heater Control. The Air Conditioning for HVAC Technicians programming is a three hour series that takes a candidate from a basic overview of an air conditioning system to more advanced topics including diagnostics. Its goal is to provide thermal comfort and acceptable indoor air quality.

Module 2 introduces basic AC, magnetism, and common electrical. In the first section of Part 1. While this step can be waived in some states for candidates with extensive experience or an apprenticeship see Option 2 , many certified technicians choose to complete formal, classroom- based HVAC training at a community college or trade school.