Air Conditioning Maintenance

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Clean the Condenser

Level of difficulty: Moderate
Estimated time taken: 30 minutes
Tools required:

  • Water hose

Step 1: Kill power to the AC unit

  1. Locate your ACs electrical box
  2. This should be right behind your AC unit, usually attached to the wall
  3. Open electrical box up
  4. Flip switch to off or remove the fuse to ensure no power will go to AC

Step 2: Clean the condenser

  1. Turn your hose on and simply clean the unit from the outside by spraying it with water
  2. Pay attention to the bottom of the unit where debris gathers
  3. Don't worry about drying, the AC fan will take care of that

Step 3: Don't forget to turn the power back on


Example Video:

Cleaning the Evaporator

Level of difficulty: Moderate
Estimated time taken: 30 minutes
Tools required:

  • Screwdriver
  • Stiff brush
  • Hand mirror
  • Bleach
  • Small wire/paperclip/toothpick

  • You can not access all evaporators. If your evaporator has a sealed sheet of metal in front of it, do not attempt to gain access.

Step 1: Remove foil-wrapped insulation in front of plenum

  1. This is most likely taped in place
  2. Remove carefully as you will need to replace this later

Step 2: Remove access plate

  • There should be several screws, remove those then pull off the access plate

Step 3: Clean the evaporator

  1. Clean the underside with your stiff brush
  2. Use the mirror to help with your vision

Step 4: Clean tray below evaporator

  1. Pour one tablespoon of bleach into the weep hole in the tray to prevent fungus growth
  2. Ensure weep hole is not clogged with paperclip

Step 5: Put it all back together

  • Turn AC back on and check for leaks


Restart the Condenser