It needs to be cooled before it provides cooling. ![]() The condenser itself contains refrigerant, but it’s at a high temperature. It’s exposed to your external atmosphere, and the condenser’s propeller fan sucks in the high-temperature atmosphere and blows that air right over the condenser. The condenser is the part of the AC that’s outside the room. This cycle focuses primarily on the external, or “atmospheric” air used to cool the condenser. The Hot Air CycleĪnother important aspect of understanding how do window AC units work is the hot air cycle. That means it gets sucked in again by the blower and the whole cycle repeats. The room’s air has higher moisture and temperature levels than the chilled air, transferring those properties to the new air. This pushes air into the room and chills it, keeping temperature and humidity levels low. This low-temperature, low-humidity air is sucked in by the AC’s blower, and “exhaled” at high velocity, passing through a metal duct, and blown out through the AC’s front panel. This removes moisture out of the air, dropping its relative humidity values. Second, the cooling coil’s temperature is lower than the room’s dew point, causing (you guessed it) dew to form on the cooling coil’s surface. Next, the air passes over your cooling coil.įirst, given that the coil’s temperature is much lower than the room air, the coil absorbs the heat this causes the room’s ambient to drop “chilling” the air. The blower pulls in room air that’s hot and full of dust particles and moves it through the air filter, separating out the unwanted particles. The cooling coil (or evaporating coil) starts to drop in temperature as soon as its compressor starts. Once the window AC kicks in, its blower starts up, followed by the compressor. The air inside your room, out in the front of the air conditioner where the cooling coil is, that’s what we call “room air.” The whole point of a window air conditioner is to get the air moving. The exterior of the window unit uses a second fan to blow outside air over the condenser to cool it down. ![]() The interior of the unit uses a fan to blow air over the evaporator to cool the room. Window air conditioners are installed in an window and it uses two air cycles. To find out more about those options, take a look at our guide on the best wall mounted air conditioner. The major difference is that you can install them inside a wall as a way to free up your window. In this post, we’ll explain everything you’d ever want to know about how does a window air conditioner work.Īfter you’re done reading, check out our free guide on the best window AC unit where we show you what features to look for to find the perfect AC unit for your own home.Īlso, this same information applies to through the wall air conditioners which are basically the same thing as window AC units. While these devices may seem complicated, the process behind how window AC works to cool the air is actually quite easy to understand. By David Morrison Posted in Air ConditionersĪre you wondering ‘How do window air conditioners work?’
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