Remove Dirty Residue And Rust Spots From Your Window Air Conditioner's Condenser Coil

Posted on: 4 March 2016

Spring is approaching, which in many climates means warmer temperatures and the desire to use air conditioning inside of a home or business. If you own a window air conditioning unit that has dirty residue and rust spots running across the front of its condenser coil, clean the metal pieces by completing the following instructions. Once you have finished, a steady supply of cool air will blow through the vents when your unit is on, cooling your surroundings quickly.


  • scrub brush with stiff bristles
  • vacuum cleaner with brush attachment
  • thin paintbrush
  • naval jelly
  • abrasive sponges
  • bucket of water
  • condenser coil cleaner
  • lint-free cleaning cloths
  • dish detergent

Scrub And Vacuum The Condenser Coil

Turn off the power to the air conditioner. Remove the cover and inspect the condenser coil. The metal pieces transfer warm air into cool air when the unit is turned on. Move a scrub brush with stiff bristles over the coil's surface to assist with dislodging dirt that is stuck between the metal. Move a vacuum cleaner's brush attachment over the coil to suck up any dirt that wasn't removed with the scrub brush.

Remove Rust And Dirt Stains

Use a thin paintbrush to apply a small amount of naval jelly to rust spots. Wait a few minutes for the naval jelly to loosen the rust. Wipe a sponge with an abrasive surface over the rust-covered sections to remove the rust. Use a clean, damp sponge to remove the naval jelly that remains on the coil once all of the rust has been removed.

Apply coil cleaner to any portions of the condenser coil that are stained with dirt or any other type of residue. After a minute, the cleaner will have a foamy appearance. Wait a few minutes for it to penetrate the dirty substance that are on the metal. Use a damp sponge to remove the cleaner when finished. Dry the coil with a lint-free cleaning cloth.

Clean Other Parts Of The Unit

If dirt is on any other portions of the air conditioner, remove it with a soapy sponge. Once the unit has a clean appearance, dry any surfaces that are wet with a lint-free cloth. Reattach the unit's cover. Turn on the unit and adjust the thermostat to a cool temperature. Hold your hands in front of the unit's vents. If you feel a consistent amount of cold air coming out of them, the unit will be ready for you to use when the outside temperature begins to soar. 

To learn more, contact an air conditioning repair company like HELP Plumbing, Heating, Cooling and Electric


Making Your Customers Comfortable

Starting a business is a monumental accomplishment. My mom and I have talked about opening a restaurant in the past. However, we haven’t ever worked up enough courage to turn our dreams into a reality. I admire anyone who has the nerve to risk financial security in order to become an entrepreneur. I do know, however, that if you’re beginning a new business establishment, one of your goals should be to make your customers comfortable as they shop around. You don't want them to get too hot, or too cold. Depending on where you live, this objective might be especially important during the hot summer months. On this blog, you will discover the best types of HVAC units to install in business establishments. Enjoy!