window air conditioner not blowing cold air

One of the most common reasons for a window air conditioner to fail to deliver cold air is incorrect mode selection. If so, you may need to open the case to clear an obstruction. If LEDs on the front panel are illuminated, indicating the unit has power, the problem could be a stuck fan blade, or it could be a problem with the control panel. Your air conditioner does its job without you thinking too much about it. Depending on the size and age of the unit, it may make more sense to replace it than sink time and money into a repair. If it still doesn't blow cold air, the refrigerant charge may be low or the condenser may have a worn seal. If no air is coming from your air conditioner, check the circuit breaker, which may have tripped. If you can feel air blowing from your air conditioner, it means the fan is working, but the condenser may not be. Paradoxically, a coating of ice prevents the unit from blowing cool air by forming a barrier over the evaporative coils. Before I used to here the compressor kick on once i turned the knob past number 7 but now I dont here anything kicking on. We’re working on the assumption your window air conditioner is getting power, and it’s either blowing warm air or no air at all. If you don't feel cold air even when the condenser is working, the coils may have frozen over, the filter may be dirty or the refrigerant charge may be low. A DIYer by nature, Deziel regularly shares tips and tricks for a better home and garden at Hunker.com. A thermistor is a thermal resistor that will turn off the system when the air near the evaporator coil reaches the temperature indicated on the thermostat. Air flow is controlled by a fan and blower that draws air from your home across a filter and over cooling coils, before being pushed back out into your room. Turn the air conditioner back on after cleaning the filter and deicing the coils. Why Isn’t My Central Air Conditioner Blowing Cold Air? Problems with the condenser and with refrigerant levels need to be fixed by a service pro, but homeowners can usually take care of dirty filters, freeze-over and power problems themselves. If the air filter is dirty or clogged, there may be little or no air flow over the evaporator coils, which may cause them to become too cold and frost or ice can form on … I keep the coils and filter clean so far. Either way, your best bet is to call a service pro to diagnose and repair the problem. A simple procedure can help determine which of these conditions is responsible. Below, we’ll show you the top 8 ways for how to make window … I have a window air conditioner in my apartment and recently it stopped blowing cold air. We are no longer supporting IE (Internet Explorer) as we strive to provide site experiences for browsers that support new web standards and security practices. If you can see daylight, then the hot outside air may be counteracting the cold air from the AC. Your first step should always be to examine the air filter and make sure it’s clean. The filter is usually behind the front grill, accessed from the side or top of the unit. So, when you walk through the door and are greeted by warm, stuffy air, you might be a bit confused. Remove anything that might be interfering with air flow, such as tree branches. If it’s not getting power, there’s a good chance the issue lies in the outlet or the circuit itself. Also, look at the rear of the unit. Check the thermostat on your unit and be sure the temperature is set low enough for it to kick on. Try cleaning your air conditioner’s filter and the coils to see if improving the airflow fixes the problem. In the first leg of its journey, the refrigerant gets compressed in the condenser coils. He worked as an expert consultant with eHow Now and Pro Referral -- a Home Depot site. One of the most common reasons for a window air conditioner to fail to deliver cold air is incorrect mode selection. Why Isn’t My Window AC Unit Blowing Cold Air? If your window AC is not doing its job, here are some troubleshooting techniques to set things right. Midway along its path, it passes through a tiny aperture and enters the evaporative coils, where it turns into a gas. If there is ice buildup, you’ll need to run the unit with just the fan in order to melt it off. If the control panel or compressor are malfunctioning, you’re facing a significantly more complicated repair. A circulation fan blows this cold air out of the front of the unit. It's worked just fine up until this point. It's against the law for an unlicensed person to service the refrigeration system in an air conditioner. It may be dirty, and if so, clean it with soap and water or buy a new one. When you turn on your window air conditioner and select "Cool," the condenser switches on and circulates refrigerant through a series of coils. A dirty filter can block air from the evaporator coils, never allowing cold air to circulate around the room. Not really, but I thought she was a genius. While you're at it, go outside and clean the exhaust grid with a garden hose. Look inside the the housing with a flashlight to inspect the coils before you replace the air filter. After correcting this setting, turn the thermostat to its maximum cold position. This part helps to control the temperature and signal the compressor to power on and begin cooling if necessary. You may also, understandably, be a bit concerned. Here are some simple steps to troubleshoot the issue, and possibly get up and running... Identify the Problem. We are no longer supporting IE (Internet Explorer). The condenser makes a rumbling sound and typically causes the unit to vibrate. If they are dirty, clean them with a vacuum cleaner. Chris Deziel is a contractor, builder and general fix-it pro who has been active in the construction trades for 40 years. If you want the air conditioner to blow cold air, make sure the controls are properly set. When temperatures rise, there are few things as frustrating as a window or room air conditioner that suddenly stops cooling. Debris or even trash may collect on the casing intakes (usually on the far end of the side), causing the fan to struggle to do its job. Home House & Components Systems Heating & Cooling System. If your window air conditioner will not blow cold air, and you have already ruled out the air filter and fan motor for issues, the problem may be the thermistor. It’s still possible to do it yourself, but it would take a more detailed walk-through and tutorial. If it is not blowing cold air, it could mean a number of things, but here are some pointers so it can start blowing cold air again. Be Sure the Thermostat is Set Low Enough ; This may seem obvious but happens. The most common causes of your air conditioner not providing cool air are a dirty air filter and a damaged condenser coil. He has degrees in science and humanities and years of teaching experience. Check the settings on the front of the unit. If they have a coating of ice, leave the air conditioner off until the ice melts. However, when the unit is properly set to "Cool" but it doesn't blow cool air, possible problems include low refrigerant, dirty air filters, and coil freeze-over. The … Having a pro come out to repair your window AC will likely run $150 to $250. When I change the setting from Hi Fan to Hi Cool, nothing changes. If that doesn’t help, clean and inspect the condenser coil on the exterior of the unit. If that doesn’t get the unit blowing cold air again, it could be refrigerant levels … Bought new window ac unit about a month ago. By creating an account you agree to the Hunker, When you turn on your window air conditioner. Of these, the air flow and temperature control are easiest to troubleshoot. (If you take it to a service center, that range will be closer to $75 to $200.) In a properly working air conditioner, a fan will draw air over the evaporator coils, where it is cooled, and then be re-circulated back into the room. If air flow seems to be okay but the unit isn’t blowing air, or it’s blowing warm air, the next item to check is the temperature control. Are no longer supporting IE ( Internet Explorer ) then this guide can help up the phone, do arithmetic! $ 200. this should make the condenser coils in the condenser coil on the front of filter. Cleaning the air filter may be simple to fix it, try cleaning the filter, coils and filter so... We are no longer supporting IE ( Internet Explorer ) incorrect mode selection, the... Is relatively easy to replace ; refer to your manufacturer ’ s documentation to find the specs for the.... 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stu 30, 2020