There are many reasons an HVAC (heating, ventilation, air conditioning) system might stop working. Posted on: 17 August 2018 There's no worse time for your air conditioner to malfunction than right in the middle of summer. 4 Reasons Why Your Air Conditioner Is Blowing Lukewarm Air . In fact, this is the most common cause of air conditioners to blow warm or hot air. But don’t worry just yet, we’ve got your back. 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. Prevent Your AC Blowing Warm Air With Annual Maintenance. Truth is, there are a ton of different variables that lead to warm air blowing out of your air conditioner. Because it illustrates just one of many reasons why a heater might blow cold air, and an air conditioner might blow hot air. 7 Reasons Your Heater Blows Cold Air/AC Blows Hot Air. So far, so good. No home air conditioning system is designed to constantly blow cold air without intermittently recycling return air from within the conditioned space. 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. If its power has gone out, the system won’t cool the air it blows out. Home AC Blowing Warm Air Intermittently. Frozen AC Unit. 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. 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 … 1. A more common mistake (and the one he made!) Here are some of the most common reasons why your AC is blowing warm air and what to do next. Before calling an AC repair company, here are 5 common causes to help narrow your focus and point you in a cool direction. To many homeowners’ surprise, air conditioners can actually freeze. 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.. is changing the fan from “auto” to “on”, which causes the fan to blow air when the system isn’t running. Dont panic. There are many different reasons why your AC is blowing warm air and sure, it can get kind of complicated. If the evaporator coil goes too long without maintenance, it can become caked with dust and unable to absorb heat as effectively. Why tell this story? The Thermostat Is On the Wrong Settings. If your AC is blowing warm air, the first thing you should check … 6 Reasons Your AC Is Blowing Warm Air. Before calling a professional, check out these 3 common … Now that’s a reason to sweat. 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