Video · Ductless Mini Splits
How Does a Mini Split Work? Outdoor Unit to Ceiling Cassette
A mini split moves heat instead of making it. Refrigerant lines connect an outdoor unit to an indoor head; in summer it pulls heat out of the room, and in winter it reverses and brings heat in.
Job footageSwiftPro
- Topic
- Ductless Mini Splits
- Length
- 0:28
- Posted
- September 13, 2026
- Shot by
- The SwiftPro crew, Northern Virginia
What you’re seeing in this video
The outdoor mini split unit sits opened up with a drill and screwdriver on top, its control board exposed. That board runs the inverter compressor, which speeds up and slows down to match what the room needs instead of slamming on and off.
A young tech in black insulated overalls crosses the backyard. Inside, another tech on an orange ladder fits the grille on a ceiling cassette, a square indoor unit that sits flush in the ceiling and blows air out in four directions, unlike the more common wall-mounted head.
Why it matters in your house
- No ducts means no duct losses. Mini splits work well for additions, garages turned into rooms, and upstairs spaces the main system never keeps comfortable.
- Because a mini split is a heat pump, the same system heats in winter. Cold-climate models keep heating well through a Northern Virginia January.
- Ceiling cassettes take more work to install than wall heads but disappear into the room. Ask which style fits the space before you settle on one.
Does a mini split heat as well as it cools?
Yes. A mini split is a heat pump, so a reversing valve flips the refrigerant flow and the outdoor unit pulls heat from outside air even when it's cold. Cold-climate models are rated to keep heating well below freezing, which covers almost every winter night here. Keep snow cleared off the outdoor unit and it'll keep up.
Want it done at your place? See Ductless Mini Splits at SwiftPro or call (703) 997-9757.
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