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How do you clean a car’s AC condenser?

My car’s air conditioning hasn’t been working as effectively recently. I asked my mechanic friend to take a look, and he said it looked and sounded fine but that the condenser could use a cleaning. He briefly explained how to clean the condenser, but honestly was a bit over my head. What’s the best way to clean a car’s AC condenser?

avatar
Jack Walsh · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
That was nice of your friend to take a look and the fact that your AC has no serious issues is a relief. Cleaning your car’s air conditioning condenser is not too complicated, but it requires some preparation and a few hours of your time.
Before you start, gather the following:
  • Screwdriver
  • Wrench
  • Shop-vac or a soft-bristled brush
  • Garbage bags and painter’s tape
  • Coil cleaner
  • Hose or spray bottle of water
  • Personal protective equipment like rubber gloves, safety goggles, and a mask
Once you have your materials, follow these steps:
  • Turn off your car and let the engine cool
  • Remove the front bumper by undoing the screws, bolts, and fasteners that hold it in place; consult your owner’s manual for specific instructions
  • Cover sensitive parts around your condenser using garbage bags and tape
  • Remove debris from the condenser using your shop-vac or brush
  • Apply the coil cleaner and let sit for five minutes
  • Rinse the condenser using a hose or spray bottle and allow it to completely dry
  • Remove the garbage bags and clean the surrounding area of any overspray
  • Reinstall the front bumper
Although your car insurance can’t pay to clean your car’s AC condenser, the right policy can free up some cash for emergencies.
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