So, without us looking at your air conditioner, there’s really no way for us to know exactly what’s causing your AC to blow warm air. A low refrigerant level will cause many problems, and being able to identify the signs of low refrigerant can help you catch needed repairs before the situation becomes a much bigger problem. Over time, condenser coils get dusty and dirty, due to rain, wind and other conditions. Five minutes of research on the Internet revealed that the most common reason for A/C blowing warm air at idle is a condenser fan that's not working. I checked the A/C Freon level with my gauge and it's full. If the problem persists, you may have your thermostat replaced or recalibrated. If the condenser coils get dirty or clogged, or if the fan fails, the refrigerant won’t be cooled completely, so the air will come out warm. Solution: Clean the outdoor unit regularly to give your condenser ample room to breathe. Think of warm air like a fever telling your body you’re sick: it’s a common symptom that tells you something’s not working correctly in your AC. There’s nothing quite like the cool relief our air conditioners bring us on hot summer days. If you have the right tools and consider yourself to be a pretty handy person, you can begin with cleaning your condenser coils. If you notice your energy bill skyrocketing or your unit running on high all the time, you could have dirty condenser coils. In order to clean it, you will first need to turn it off. If you haven’t cleaned the coils in a while, check out this post for some tips. 12. For dirty blades, you can clean away any debris and dirt using a vacuum and a soft cloth. 10 causes why AC blows warm air. You may also have a thermostat problem or be dealing with a dirty air filter. Clogged air filters can cause various problems in your unit. In a properly-maintained system, the refrigerant level should never change. Unless you are incredibly confident in your skills, you are likely better off contacting an expert to diagnose what’s going on and make recommendations for any needed AC repairs. Remove weed and debris surrounding the unit and hose it down to remove caked-up dirt. A refrigerant is essential to maintain your unit’s best performance. Here are the steps involved: Turn off the power to your unit. Finally, and most importantly, it’s important to catch refrigerant leaks early because of the impact inhaling refrigerant can have on your health. Unfortunately, this is a common airflow issue. Without enough refrigerant in your system, the evaporator coils can’t absorb heat. However, you'll need a professional to figure out if this is the problem. Warm air coming from your air conditioner on a humid day makes staying in your home simply unbearable. If the blockage is visible when you look at the drainpipe, you can remove it manually wearing protective gloves. When this happens, you’ll feel nothing but warm air. #ACRepair #ACBlowingHotAirFix #acwarmair In this video I teach you how to fix your AC unit quickly when it is not blowing cold air. Ducts run through your walls and ceilings, carrying the cooled air from your AC unit throughout your home. If the fan, either on the indoor or outdoor unit, fails to work as it should, this will facilitate poor airflow. If neglected, fan problems may result in compressor failure. Check out these AC specialists in Phoenix, AZ. And, while that can help improve air quality if you have a whole-home air cleaner installed, it could also be the reason why you feel warm air (or at least air that isn’t cooled) blowing … From there I went home, shut it off and about fifteen minutes later left for work but this time the AC was blowing cold. If you detect either of these noises coming from your air conditioning unit, you’ll want to call a licensed professional to come take a look. 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