Clean outdoor AC condenser coils
Why it matters
Dirty outdoor coils reduce SEER rating by 10–20% and force the compressor to work harder, shortening its life and risking catastrophic failure. A new compressor costs $1,200–$3,000.
Stop forgetting to do this.
Hearth generates a personalized maintenance schedule so you never miss another clean outdoor ac condenser coils.
How to do it
- 1
Turn off AC unit at thermostat and breaker to prevent accidental startup.
- 2
Remove debris (leaves, grass clippings) from around the outdoor condenser unit.
- 3
Spray coil fins gently with garden hose set to low pressure, from inside coil outward.
- 4
Inspect fins for damage; straighten any bent fins with a fin comb if available.
- 5
Let unit air dry for 10 minutes before restarting.
- 6
Restore power and test AC operation on cool setting.