Tips for Cleaning Your AC System

September 20, 2019

With summer ending in Bishop, now is a good time to get ahead on air conditioner maintenance.

If you haven’t cleaned it recently, it could be full of dust and debris from your yard. This buildup can reduce your unit’s efficiency and cause it to malfunction. Or make it wear out more quickly.

We recommend having your air conditioning system professionally serviced once a year. Why? Clean equipment can be more energy efficient, which could save you money on electric costs.

Consistent AC maintenance also helps our technicians locate and take care of minor issues before they become costly problems.

Related: How to Keep Your Air Conditioner from Failing

Some of the work we complete involves:

  • Inspecting the blower, motor, drain line and coils
  • Watching pressure and temperature
  • Reviewing lines, refrigerant amounts and connections

There’s still time to have a tune-up done this fall—and we can get your furnace prepped for heating season too.

Schedule maintenance now


There’s also some maintenance you can do by yourself between professional tune-ups. You only need about an hour to wash your outdoor condenser unit, as well as several parts on your indoor HVAC system.

Related: How Often Should You Expect to Get Air Conditioning Service Done?

How to Clean Your Outside AC Unit

Select a mild day to clean your air conditioner. At least 60 degrees Fahrenheit (20 degrees Celsius) is great. That way, you can check your system once you’ve cleaned it.

You’ll only need a few things:

  • Wet-dry vacuum and hose with a soft brush attachment
  • Screwdriver
  • Butter knife
  • Damp rag
  • Small, round paintbrush
  • Replacement furnace filter (if necessary)

Related: How AC Repair and Maintenance Can Actually Save You Money

5 Steps to Clean the Outside Unit

1. Turn Off the Power

Switch off the electricity to your air conditioner at the breaker box.

2. Clean the Outside

Empty rubbish from the equipment. This includes branches, bushes, weeds and grass.

Then turn on the vacuum to slowly clean the metallic fins. These parts are also known as condenser coils and move heat away from your unit.

You need to be considerate of these fine coils. Misshapen or crumpled fins can impact efficiency.

3. Fix Bent Fins

Use a butter knife to straighten warped fins. You can also get a fin comb from an appliance parts website. A pro from Bishop Heating & Air Conditioning should handle large amounts of damage.

4. Clean the Inside

After removing the fan, pull out leaves and other yard rubbish. Then clean the inside of the equipment with a wet sponge.

The only coil cleaner you have to have is water. Use light pressure from a hose nozzle to clean the fins, showering water from the inside out. Reinstall the fan once you’re completed.

5. Test Your Air Conditioner

Now it’s time to restore power and turn your air conditioner back on. If it’s not working correctly, give us a call at 760-784-9034.

Related: Air Conditioner Service: Pay a Little Now, Save Later

3 Steps to Clean the Indoor Unit

1. Turn Off the Power

Stop the power to your furnace at the breaker box.

2. Check Your Filter

Furnace filters should be changed every couple of months, depending on the kind you use.

Not sure when you last checked yours? Pull it out and hold it up to the light. If there’s no light visible, get a new one.

3. Clean the Inside

Remove the blower door and vacuum up dust.

Then examine your air conditioner’s drain line—it’s a supple plastic tube. If it’s moldy, you can sanitize it by draining diluted bleach through the tube to sanitize the line. Or you can get a new tube.

Scrub the drain port using a small, round paintbrush. Hook up the drain tube and restore power.

Related: How to Keep Your Air Conditioner Running Well Through Fall

Never Forget a Tune-Up Again

Annual air conditioner maintenance from Bishop Heating & Air Conditioning can make your system more efficient and help it last longer. We also have practical service agreements, so you won’t forget to schedule your regular maintenance!