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Video · Ductless Mini Splits

Mini Split Maintenance: Indoor Filters and the Outdoor Unit

Mini split maintenance comes down to clean filters in every indoor head, a clear outdoor unit, and a professional cleaning and check once a year. Skip it and the system loses capacity and starts to smell musty.

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Licensed and insuredVirginia Class A contractor #2705192276

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What you’re seeing in this video

A SwiftPro tech on a ladder lifts the front cover of an indoor mini split unit mounted high on the wall near the ceiling, the panel that hides the washable filters and the coil.

Outside, another tech in a camo hoodie works on the outdoor unit's control board with his tools set on top of the cabinet, while a third works up under the eaves of the house. The numbered tips on screen keep it simple: clean the filters, keep the outdoor unit clear, and schedule regular professional maintenance.

Job footageSwiftPro
Topic
Ductless Mini Splits
Length
0:31
Posted
September 28, 2026
Shot by
The SwiftPro crew, Northern Virginia

Why it matters in your house

  • Indoor mini split filters clog faster than you'd think. Pop the front cover and rinse them every month or two in heavy use; a clogged filter cuts airflow and comfort.
  • Keep two feet clear around the outdoor unit, and brush off leaves and snow so the coil can breathe. Ice that keeps building up on it in winter is worth a call.
  • A pro cleaning reaches what the filter can't: the coil and the blower wheel inside the head, where dust and moisture build up into a smell.

How do you clean a mini split?

Homeowners can handle the filters: turn the unit off, lift the front panel, slide the mesh filters out, rinse, dry and put them back. The coil and the barrel-shaped blower wheel need a pro with a cleaning bag and coil cleaner, because the water has to be caught and the electronics kept dry. Once a year is right for most homes.

Want it done at your place? See Ductless Mini Splits at SwiftPro or call (703) 997-9757.

More videos from the SwiftPro crew

A young tech in a SwiftPro hoodie reacts while holding a yellow tool indoors, then a tech in a camo hoodie wires and connects line sets to an outdoor mini split condenser on the lawn.0:18Mini Split Replacement: The Joke, Then the Line Set WorkA mini-split outdoor unit opened up with a Milwaukee drill and screwdriver on top, showing the control board.0:28How Does a Mini Split Work? Outdoor Unit to Ceiling CassetteAttic before/after: old foil-wrapped plenum and flex duct (R-4.2) with a can of Spray-N-Seal, then new sheet metal with a SwiftPro decal and SwiftPro equipment checkup label.0:13Attic Air Handler Replacement, Seen From the Duct SideBasement furnace replacement: two techs pull the old furnace out, captions explain poor airflow and aging furnace, then a new Rheem furnace (Rheem logo legible) installed on a tile floor; phone 571-470:34Dirty Furnace Filter or Tired Furnace? Why Heating Bills ClimbAir duct cleaning: a tech with a headlamp and respirator works at a return in a living room beside a bookshelf, a floor register caked with dust, and a red vacuum hose fed into the duct opening.0:29Why Is My House So Dusty? Start at the Floor RegisterWater heater flushing explainer: a tech kneels at a GE electric water heater beside a SwiftPro van, then a tech kneels at a basement gas water heater pointing at the drain while the homeowner watches.0:30How Often to Flush a Water Heater: The Drain Valve Explained

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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