1. 4 Reasons Why Your Air Conditioner Is Blowing Lukewarm Air . The duration for which cold air will be produced from the supply air outlets depends on the programmable set point of the temperature controller. is changing the fan from “auto” to “on”, which causes the fan to blow air when the system isn’t running. Posted on: 17 August 2018 There's no worse time for your air conditioner to malfunction than right in the middle of summer. 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. There are many reasons an HVAC (heating, ventilation, air conditioning) system might stop working. Dont panic. 7 Reasons Your Heater Blows Cold Air/AC Blows Hot Air. To many homeowners’ surprise, air conditioners can actually freeze. As your AC system blows warm air from your home over the coils, the refrigerant in the coils absorbs heat from the air, thereby making the air cooler. 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.. But hold the phone. During your tune-up we’ll measure your refrigerant levels, clean your coils and check to ensure that all of your system’s parts are working properly. The Thermostat Is On the Wrong Settings. Frozen AC Unit. Hot air is the last thing you want from your home’s AC unit. 6 Reasons Your AC Is Blowing Warm Air. But don’t worry just yet, we’ve got your back. Because it illustrates just one of many reasons why a heater might blow cold air, and an air conditioner might blow hot air. No home air conditioning system is designed to constantly blow cold air without intermittently recycling return air from within the conditioned space. Now that’s a reason to sweat. If its power has gone out, the system won’t cool the air it blows out. So far, so good. An AC blowing warm air shows you that your indoor air handler unit is on, and the power supply is functional. Yes, freeze solid inside into a block of ice. When the system is not calling for cooling, the air that is circulated can feel warm coming out of … Before calling an AC repair company, here are 5 common causes to help narrow your focus and point you in a cool direction. If your AC is blowing warm air, the first thing you should check … Truth is, there are a ton of different variables that lead to warm air blowing out of your air conditioner. The best way to prevent the problem of an AC blowing warm air is to schedule annual air conditioner tune-ups from Hydes. In fact, this is the most common cause of air conditioners to blow warm or hot air. Contact your local AC repair company and explain the issue to them. Why tell this story? Home AC Blowing Warm Air Intermittently. But all you have to work with are the symptoms. Your AC could be blowing warm air for a lot of reasons. 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