Why Is My AC Not Cooling My House?

The condenser compressor outside your house is just part of an air conditioning system. An indoor air handler unit (furnace or fan coil), an evaporator coil, air filter, thermostat, and copper tubing (refrigerant lines) that link the indoor and outdoor systems are all common components of split-system air conditioners. So, to the question, "Why isn't my air conditioner cooling the house?" there are a few options.


The majority of homeowners are capable of doing simple troubleshooting and will be able to fix the problem.


  • The Thermostat Has Been Set Inaccurately


Check the thermostat settings first if your house is getting a little hotter than normal. Make sure the temperature is set to cool. Check the temperature setting to make sure it hasn't been adjusted whether the thermostat is set to cool.


Turn it back to cooling mode if it's turned off, set to heat, or set for continuous fan (sometimes clearly labelled "on"). Wait a few minutes after the machine has turned on before checking for cool air blowing from the registers.


  • Dirty Filter


Your air conditioner may have an air filter in or near the indoor air handler assembly. When soil, pollen, and other airborne particles join the air handler machine, the filter captures them.


It makes the system's components cleaner and more functional, and it can also help keep the air in your home cleaner. A clogged air filter will obstruct airflow and cause your home to overheat. It may also trigger the machine to shut down entirely in serious cases.


If your thermostat is working properly but you still don't have cold air, look for your system's air filter, turn it off, uninstall it, and test it.


If your central air conditioner still doesn't cool your home after you've confirmed that your air filter is safe, you'll need to search a little harder to find the source of the problem.


  • Problems with Condenser


Your central air conditioning system most likely requires an outside condenser unit, as previously said. The condenser unit's exterior features a huge outdoor coil that stretches the majority of the way around the unit.


The coil is made up of a number of thin metal "fins" that are very closely spaced. A jammed or clogged condenser coil could be the cause of your air conditioner running but not dropping temperatures inside.


The condenser fan pulls air into the outside device through the condenser coil to extract heat energy from your home while it's working properly. Dirt, grass, and other airborne particles will clog the coil by accumulating between the fins.


A dirty coil may result in lower energy efficiency, a loss of cool air at the registers, or, in the worst-case scenario, a full system shutdown or compressor damage due to overuse.


Clearing dirt, properly vacuuming the coil with a brush attachment, or softly rinsing the coil with a hose are all options for cleaning the coil.


  • Broken Heat Pump

Your outdoor device may be a heat pump in some situations. A heat pump resembles an air conditioner, but it contains additional components that allow it to cool and heat your house.


It works similarly to an air conditioner's condenser device in terms of ventilation and is susceptible to the same problems – dusty, clogged coils, freezing coils, refrigerant leakage, compressor malfunctions, and so on.


Check the thermostat settings, the air filter, and the condenser unit for previously mentioned problems if your heat pump system isn't cooling.


Photograph of downtown Mesa, Arizona, showing Mesa City Plaza (the city hall and municipal offices). This photo was taken at the northwest corner of Center Street and Pepper Place. By Ixnayonthetimmay - Own work, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=8928620

  • Refrigerant Leaks


The chemical refrigerant is essential to the cooling process. It changes from liquid to gaseous shape as it passes through the system's indoor and outdoor coils, drawing heat energy and humidity from indoor air and releasing it outside.


A refrigerant leak can cause your AC system to stop blowing cold air, operate for longer periods of time without properly cooling your house, or cause a damaged or faulty compressor and full system shutdown, depending on the magnitude.


  • Frozen Coils


An evaporator coil is part of the indoor portion of the central air conditioning system. If your indoor appliance is a refrigerator, the evaporator coil is located outside the furnace in its own drawer.


The evaporator coil is located within the fan coil cabinet if the indoor device is a fan coil (typically as part of a heat pump system). Warm indoor air flows into the evaporator coil, which removes thermal energy and humidity.


The air is then pumped back into your house, making it cooler and more relaxed.


Are You Looking for An Air Conditioning Repair Contractor You Can Trust?

For the last thirty years, Fresh Breeze has been proudly serving the residents of East Valley or Mesa, Arizona. Owned and operated by Ben Wanless and his wife Rachel, Fresh Breeze truly is a family-run business. It is in FreshBreeze's sincerest desire to help you stay cool in the summer and warm in the winter, and to that end, Fresh Breeze will never try and sell products just to make a quick buck. Fresh Breeze considers the job to be their purpose in life and as such, knows providing honest, quality service is the only true path to success. Our family of employees are proud to be honest, hard-working, mechanically inclined technicians who can and will jump in and get the job done! Call Fresh Breeze and we guarantee you will not be disappointed. Our current customers, past customers, and family all attest to that! Schedule a service call or on site quote today!

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