tools for an air conditioner service

Tips for Cleaning Your AC System

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

If you haven’t washed it recently, it could be full of dirt and debris from your yard. This accumulation can reduce your unit’s efficiency and cause it to malfunction. Or make it wear out sooner.

We suggest having your air conditioning system professionally maintained annually. Why? Clean equipment can be more energy efficient, which could save you money on utility bills.

Consistent AC maintenance also helps our technicians locate and handle slight issues before they become expensive problems.

Related: How to Keep Your Air Conditioner from Failing

Some of the work we perform involves:

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

It’s not too late to have service done this fall—and we can get your furnace ready for heating season too.

Schedule maintenance now


There’s also some maintenance you can do alone between professional tune-ups. You only need about an hour to wash your outdoor condenser unit, as well as a couple of 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

Pick a temperate day to wash your air conditioner. At least 60 degrees Fahrenheit (20 degrees Celsius) is best. That way, you can check the unit once you’ve cleaned it.

You’ll only need a couple of 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

Cut the power to your air conditioner at the breaker box.

2. Clean the Outside

Take out waste from the unit. This includes branches, bushes, weeds and grass.

Then run the vacuum to slowly clean the metallic fins. These parts are also called as condenser coils and divert heat away from your equipment.

You need to be considerate of these fragile coils. Misshapen or crumpled fins can affect efficiency.

3. Fix Bent Fins

Use a butter knife to adjust warped fins. You can also get a fin comb from an appliance parts website. A pro from B & B Heating & Cooling should fix large amounts of damage.

4. Clean the Inside

After taking out the fan, dig out leaves and other yard litter. Then clean the inside of the unit with a wet sponge.

The only coil cleaner you should use is water. Use light pressure from a hose nozzle to rinse the fins, directing water from the inside out. Reinstall the fan once you’re done.

5. Test Your Air Conditioner

Now it’s time to restore power and turn your air conditioner back on. If it’s not running correctly, contact us a call at 314-325-7552.

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

3 Steps to Clean the Indoor Unit

1. Turn Off the Power

Turn off the power to your furnace at the breaker box.

2. Check Your Filter

Furnace filters need to be exchanged every several months, depending on the type you use.

Can’t remember when you last checked yours? Pull it out and tilt it toward the light. If light isn’t visible, replace it.

3. Clean the Inside

Remove the blower door and vacuum up dust.

Then examine your air conditioner’s drain line—it’s a pliable plastic tube. If it’s scummy, you can clean it by draining thinned bleach through the tube to clean the line. Or you can buy a new tube.

Scrub the drain port using a small, round paintbrush. Reconnect 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 B & B Heating & Cooling can make your unit more efficient and help it last longer. We also provide convenient service agreements, so you won’t forget to book your routine service!

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