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Clean The Condenser Coil In Your Window A/C Unit For Optimal Performance

by Tara Pena

If the window air conditioning unit at your shop is blowing warm air, dirt may be trapped inside of the condenser coil. The condenser coil is the row of metal pieces that is located along the front, interior part of your unit. Learn how to clean this part with the following steps so that your unit works properly. 

Use The Following Items

  • tarp
  • vacuum cleaner (for wet and dry surfaces)
  • coil cleaner
  • metal brush
  • sponge
  • fin tool
  • rust inhibiting spray
  • lint free cloths
  • mild detergent
  • scrub brush

Vacuum Up Dirt And Clean The Surface

Turn off the power to the unit. Place a tarp on the floor, in front of the unit to collect dirt that falls as you are cleaning. Remove the cover to the unit and locate the condenser coil. Vacuum the coil's surface with the hose attachment on a vacuum cleaner that can be used on wet and dry surfaces. Loosen pieces of dirt that are stuck between the metal pieces with a wire brush.

Spray coil cleaner on the condenser coil and allow it to penetrate for several minutes. Use a wire brush to remove stains on the surface. Wipe the condenser off with a damp cloth. Dry the metal surface off well with another cloth.

Straighten Bent Metal And Apply A Rust Inhibitor

Inspect the metal pieces that make up the condenser coil. If any of them are bent, insert one end of a fin tool underneath the metal and press the tool in the direction that you would like the metal to bend. Spay a rust inhibitor across the condenser coil's surface. This product will protect the metal from moisture-related damage. It will remain effective for several months.

Locate the condensation pan. It is underneath the condenser coil. Slide it out and empty it. Clean the inside of the pan with mild detergent and a scrub brush. Rinse it out with water and slide it back into place under the condenser.

Inspect The Unit

Replace the cover to the unit and turn the power back on. The air coming out of the vents should feel cool. Your unit will continue to operate properly if you clean the condenser coil a couple times each year. Cover the air conditioning unit with a vinyl tarp and store it in an area that stays dry if you want to remove the unit from your shop's window during the winter. After you place the unit in a window the following summer, you can use it without delay 

For more information, contact Robinson Heating & Cooling Inc. or a similar company.

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