While cool drinks and beach parties are great ways to enjoy the season, home comfort is still the best companion to ease the heat. That’s when we need our air conditioning systems so badly. One of the most common HVAC problems during the summer season is the warm air produced by air conditioning systems. It’s a big discomfort since this is the time when we rely too much on our units to cool our homes. Most homeowners are stressed out thinking what to do about it. Here we’ve outlined some reasons why your AC is having trouble producing cool air. The thermostat is on heat mode. Check if you have accidentally switched your thermostat to “heat” mode. It happens all the time. Flip the thermostat setting back to cool and see if it makes a difference. You should also check if the batteries are still working and if not, replace them immediately. You have a dirty air filter. Dirty air filters can lead to dirty evaporator coil. Dust and debris can block the evaporator coil and may also freeze it. You might think that it can add up to the cool air produced but you’re wrong. It actually does the opposite. Frozen evaporator coils obstruct the flow of cool air allowing the warm air of the running motor to circulate your home. Clean your AC filter regularly. Hire a technician to see the cause of your frozen evaporator coil. If it’s not dirt, you might have another problem in your system. Your outside unit is in poor maintenance. If you already checked the indoor parts and found no error there, walk out of your house and inspect the outdoor parts. Your condenser coils can be blocked by dust and leaves if not properly maintained reducing free airflow. If you have plants near the unit, be sure to trim them often to avoid growing near the condenser coils. Do a regular cleaning to rinse off dust in the unit. You’ve got low refrigerant. The usual cause of warm air produced by AC unit is low refrigerant which is usually Freon. The refrigerants cool your home. If you notice ice formation inside and out of your system, AC blowing warm air, or strange noise, you might have a problem with your refrigerant. It may be overcharged, undercharged, or leaking. This is a complex job so better hire a licensed technician to fix the issue. Do not compromise your comfort and start doing preventive maintenance for your system. You can always count on the experts at Rhino Heating and Air Conditioning. Call us at 405-615-2676.