Install Your Own Comfort.
Save on the Cost of Expensive HVAC Technicians.
True DIY mini-split systems. Pre-charged line sets. Delivered right to your driveway. No contractor, no vacuum pump, no HVAC license required.
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How many rooms are you cooling?
Start where you are — one room, two zones, or a whole home. We'll route you to the right system so you never guess at a part number.
One Room
A single mini-split for one space — up to ~500 sq ft. Perfect for a bedroom, office, garage or addition.
Shop one-room systems →A Few Rooms
Two or three rooms on one outdoor unit. Our guided builder sizes each room and bundles the whole kit for you.
Build my system →Whole Home
Four to six rooms — whole-house comfort from one outdoor condenser. We'll size and match every room for you.
Design my system →Contractors charge thousands for labour. We don't.
A traditional mini-split install runs $2,000–$5,000 in contractor labour before you've cooled a single room. MRCOOL® DIY systems ship with pre-charged Quick Connect line sets — so you don't need special tools, a vacuum pump, or an HVAC license to get professional-grade cooling.
A full install, start to finish — in one afternoon.
No vacuum pump, no gauges, no HVAC license. See exactly how the pre-charged Quick Connect line set turns a mini-split into a weekend job.
Mount
Hang the indoor head on the wall bracket and set the condenser on a pad.
Connect
Hand-tighten the pre-charged Quick Connect line set — no vacuum, no gauges.
Power on
Flip the breaker, pair the app, and you're heating and cooling.
The units Canadians install most.
Proven models our customers keep coming back for — chosen for easy install, quiet inverter operation and real Canadian-winter heating.
Not sure what size you need?
An undersized unit won't keep up on the hottest days. An oversized one short-cycles and won't dehumidify — leaving rooms cold and clammy. And freight returns are a nightmare. Get it right the first time.
Use Our BTU Sizing Guide →