why does my air conditioner blow hot air
Air conditioner failure always seems to happen on the hottest day of summer. Blowing hot air is common complaint when an air conditioner is no longer properly working. PBut what causes this problem, and what can you do about it? How Does My A/C Work? Before you can try to fix your air conditioner, it helps to know a little bit about how the unit works. Air conditioners function like refrigerators. They take hot air from inside a room, remove the heat, and this produces cool air. There are three main parts to an air conditioner:
It works like this: the refrigerant fluid flows through the coils inside the air conditioner arrives at the condenser in a cool, gaseous state. The compressor squeezes the fluid and raises its temperature. The gas is then sent into the condenser, where it is changed into a liquid and its temperature is lowered. Then the liquid is sent to the evaporator, where it s turned back into a gas. This gas extracts heat from the air. The cool air is circulated around the house by way of a fan inside the A/C. A more detailed explanation can be found online Pby the California Energy Commission. What Causes An A/C to Blow Hot Air? There could actually be a number of reasons that your air conditioner begins to blow hot air and not all these reasons are malfunctions. If your air conditioner is connected to a thermostat that controls the furnace as well as the A/C, it s possible that the thermostat is on the wrong setting.
Simply adjust the setting and the unit will work. If your A/C is a central air unit, the compressor and condenser will be located outside the house. These parts are located in the metal box with fin-like ventilation slats, usually alongside the house or on the roof. Check that the compressor and condenser have power running to them. If the power to these two parts has been cut, your air conditioner will run but will not cool the air. If you re not sure how to access the power supply on this part of your air conditioner, you may be able to find that information in the user s manual that came with the unit. The air filters prevent pollutants from blowing through your vents and into your home, and also help keep the coils clean. If the coils become too dirty, this can cause the air conditioner to work harder than it needs to cool the air in your home. The coils can freeze and that stops the unit from cooling altogether. Filters are inexpensive and available at home improvement stores. Turn off your A/C and let the coils thaw out. Then, replace your filters and clean the coils. Freon is the refrigerant that flows from the compressor, to the condenser, to the evaporator. PIf your air conditioner is running low on Freon, this is a problem that must be fixed by a professional.
If you ve tried replacing the air filter, cleaning the condenser coils, checked the power supply and adjusted the settings, then the most likely scenario is that your air conditioner is low on Freon. This type of problem should be addressed by a professional. In many cases, this is an easy and inexpensive problem to fix. Once you ve fixed the problem, performing annual maintenance and preventative care on your air conditioner will help you avoid these issues in the future. Change air filters every 3 months. Clean the coils annually. Have an air conditioner repair person service your unit once per year in the late spring or early summer. For more information about common air conditioner problems, check out this useful article on the. What are your tips for maintaining your air conditioner and staying cool this summer? Post a reply at the bottom of this page. We d love to hear from you! Air conditioning can be essential on a hot summer day. Nothing is worse than hot air blowing from your AC. We all expect that sound of an air conditioner working to mean a nice cool breeze and a comfortable indoor temperature. PSo why would an Air conditioner blow hot air? PWell there are several reasons, some almost silly and some serious.
PHere are a few of the most common reasons that you arent feeling that refreshing chilly air. Thermostat Setting: PDid your thermostat somehow get reset? PMake sure you check that your thermostat is set to cool! PIf the settings were changed, your air conditioner could be working perfectly, it may just not be on! PHVAC systems will usually have several settings and although the sounds they make may be the same when they are working they all have very different functions. PMake sure you dont have yours set to a heat or fan mode. Restricted Airflow: PIf there is something restricting the Airflow in your HVAC system there the cool air being produced by your air conditioner may not be making it through your ducts into your house. PThe main culprit for this is an Air Filter that needs to be changed. PIf a filter hasnt been changed in a long time it can get very dirty and clogged which will stop the airflow from your AC. PIt is relatively easy to yourself, and could easily fix the problem. PA dirty air filter can also make the coils in your AC dirty and that will require professional maintenance. Electric Issues: Most air conditioners have two parts, and indoor and an outdoor unit. PIf the electricity is cut off to the outdoor unit you may be getting warm air blown into the house. PAn indoor unit will often be on a separate breaker from the outdoor, so the fan will keep blowing air even if the AC isnt actually functioning.
PCheck your outdoor unit to see if it is actually on and functioning. PIf it doesnt seem to be you can also check the breaker and see if it has been tripped. PIf the breaker has been tripped there is probably a bigger issue involved and you should seek help from a professional. Low Refrigerant: PFrom the cheapest air conditioner to the most elaborate, they all use some kind of refrigerant (usually Freon). PA Freon leak can leave you feeling the heat since you will have a complete loss of cold air. PA Freon leak will be obvious if you see ice formed on the inside and outside of your unit. PThere are also a few other reasons your AC could be low on refrigerant. PIf that is your issue, a recharge and maintenance will be necessary and you will definitely need to seek the help of a professional. Hopefully we have given you a bit more of an idea what is going on. PIf you decide you need professional help fixing your Air Conditioner in Clarksville, Tennessee Por the surrounding area, contact Action Air. POur experienced technicians are on call Monday Sunday 8am to 8pm and we have emergency service 24/7! PBook an appointment online today at, or give us a call at (931)-647-8525.
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