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Video · AC Maintenance and Coil Cleaning

AC Condenser Parts: Compressor, Coil, Capacitor and the Rest

An outdoor AC condenser is a compressor, a coil, a fan and the electrical parts that start them. The compressor squeezes refrigerant, the coil and fan dump your home's heat outside, and the capacitor gets it all moving.

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What you’re seeing in this video

The camera goes close inside an outdoor AC condenser: the capacitor, the bundle of wiring that feeds it, the filter drier on the refrigerant line, and the service valve where a tech connects gauges. Each one has a job in moving heat out of your house.

Then two techs, one in a black SwiftPro shirt with sunglasses pushed up on his head, wheel a brand-new condenser on a dolly up a path from a row of townhomes.

Job footageSwiftPro
Topic
AC Maintenance and Coil Cleaning
Length
0:28
Posted
September 9, 2026
Shot by
The SwiftPro crew, Northern Virginia

Why it matters in your house

  • The filter drier is the small metal canister on the liquid line. It catches moisture and debris in the refrigerant, and it's normally replaced any time the system is opened for major work.
  • The contactor is the switch the thermostat closes to start the unit. Pitted contacts can chatter or stick closed, so an outdoor unit that won't shut off is worth a look.
  • Knowing these names helps when you get a quote. A capacitor is a modest repair, a fan motor is mid-range, and a compressor on an older system often means pricing a new one.

How does an AC condenser work?

Your indoor coil soaks up heat from the house, and the refrigerant carries it outside. The compressor squeezes that refrigerant into a hot, high-pressure gas, the condenser coil spreads it out, and the fan blows air across the coil so the heat leaves into the yard. The refrigerant cools into a liquid and heads back inside to do it again.

Want it done at your place? See AC Maintenance and Coil Cleaning at SwiftPro or call (703) 997-9757.

More videos from the SwiftPro crew

A tech in a black cap and hoodie reaches into the evaporator coil cabinet above a furnace in a mechanical room, labeled on screen.0:28Dirty Evaporator Coil and Blower Wheel: Where AC Dust Ends UpA tech in a gray Trane hoodie and black SwiftPro cap tests a condenser capacitor with a clamp meter at a row of AC condensers outside townhomes in the rain.0:30AC Condenser Inspection: Testing the Capacitor and PressuresHands in maroon sleeves wipe rust-red dust off a bundle of control wires with a rag inside an air handler or furnace cabinet.0:26Cleaning Inside an AC Unit Means Cleaning the Wires TooA tech pulls the media filter from an Aprilaire filter cabinet on a gas furnace in a laundry room.0:38AC Maintenance Before Summer: Filter Inside, Wiring OutsideA young tech in a black SwiftPro polo stands beside an AC condenser in a backyard holding a tablet and explains how dirty AC coils raise costs on a 15-year-old unit.0:39Dirty Condenser Coil: Still Cooling, Still Doing DamageOutdoor AC condenser cleaning: leaves and mulch packed inside the base, then a tech in black with red gloves sprays foaming coil cleaner and rinses the coil with a hose beside a brick house.0:29AC Coil Cleaning, Start to Finish: Leaves, Foam and a Rinse

See all 234 SwiftPro videos

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SwiftPro Heating, Cooling & Plumbing
4230 Lafayette Center Dr N, Chantilly, VA 20151
44679 Endicott Dr, Suite 211, Ashburn, VA 20147
Virginia Class A contractor license #2705192276

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