How to Repair a Window Unit Air Conditioner A malfunctioning window air conditioner generally tends to be cheaper to fix than a central air system. Often you'll see a sudden reduction of the volume of cool air or air that is no longer as cool as it once was. Fixing your window air conditioner in this case may be as simple as cleaning it, rather than an all-out repair. Unplug the air conditioner. Unscrew and remove the front grill. Depending on the model and age, you may need to pry off the grill with the flat end of a screwdriver. Slide the air conditioner unit out of its place inside the window. Have someone help you move the unit to a sturdy and durable surface. Look for the air conditioner's mesh filter covering the fins on the evaporator coil. Wash the filter with warm water, detergent and a drop or two of bleach. Shake the filter to remove excess water and allow to dry. Use a hand-held vacuum or attach a brush attachment to your full-sized vacuum cleaner. Run the vacuum over the evaporator coils.

Use a heavy-duty brush to remove any dirt that remains on the coils after vacuuming. Take a closer look at the fins of the evaporator coil. Look for any fins that are bent, and use a special tool known as a fin comb to straighten bent fins. Run the fin comb either up or down the fins to straighten them. Turn the air conditioner around so that you can see the unit's condenser coils. Vacuum these coils, and use the heavy brush to remove any dirt that the vacuum doesn't remove. Use the fin comb to straighten bent coils. Clean the fan blades and use the vacuum to remove any remaining dirt or dust particles. Place the unit back into the window. Reinstall the mesh filter after it has dried completely. Plug the air conditioner cord back into the wall outlet. Unplug the air conditioner unit before opening it up for any kind of service. : Room/Window Air Conditioner Doesn't Cool "Time-Life Fix-it-Yourself Home Heating and Cooling;" "Time-Life Home Repair and Improvement: Repairing Appliances;"

Part of the series: Car Air Conditioning Repair. Car Air Conditioner Parts: Condenser Unit. Compressor Problems with a Car Air Conditioner. You can repair the two most common problems of a window unit air conditioner with a few basic hand tools. When your window-mounted air conditioner starts to malfunction, you may not want to immediately replace the entire unit. It is very likely... A faulty A/C unit can be very frustrating. how long should my ac unit runWhether you have a window unit or a central A/C system, you will be...who makes the best central ac unitRoom air conditioners, or...window ac unit not working How to Fix a Window Air Conditioner That Freezes Up; Window unit air conditioners need regular cleaning and maintenance to...

How Do I Replace a Compressor in a Window AC Unit?. Home Maintenance & Repair; Window Air Conditioner Unit Repair Tips; Why is the Air Conditioner Window Unit Not Blowing Cold Air? How to Service Your Air Conditioner. Air conditioners, be they window units or central air systems, require regular maintenance to perform... How to Repair Home Air Conditioners How to Repair an Air Conditioner How to Check Central Air Conditioning That Is Not Cooling How to Determine What Size Central Air Conditioner for a Home How to Troubleshoot a Portable Air Conditioner How to Troubleshoot an Air Conditioner Wall UnitWritten Written Written Written Window Mounted AC units work on the principle of refrigeration to cool the air into your room. Any moisture in the air will condense on the coils and possibly turn to ice. Occasionally the AC unit will conduct a defrost cycle to break up that ice so that your AC unit can function normally.The unit should have a drain on the outside section to allow the water to drain out.

If it is overflowing inside, you should check that the drain isn’t blocked.If the unit is blowing water droplets inside, this is could point to two things:It is particularly humid air that you are coolingThere may be a refrigerant leak. If this is the case, the best option is to replace the unit.Written It is normal for the dehumidifying process to create some condensation. However, if there are pools of what under you AC unit, there might be a problem. You may have a damaged condenser pump, improper installation, too much pressure within your unit, a clogged drain hole, or bad seals.Condenser Pump: To determine weather you have a broken pump, pour water into the condenser pan, and the pump should pump out excess water. If it is not, the pump will need to be repair or replaced.Improper Installation: If your air conditioner was not installed properly, this can effect the unit. Make sure you check that the unit is leveled.Too Much Pressure: Closed or blocked vents create pressure within your air conditioner.