MRCOOL DIY 5th Gen Hyper Heat 12K BTU Mini-Split — Wall Mounted
Will this heat my room?
Enter your square footage — we'll tell you straight, even if this isn't the right unit.
Yes, you can install this yourself
The DIY line ships pre-charged with quick-connect fittings — the reason most people hire an HVAC installer doesn't apply here.
Mount the bracket
Drill a 3" pass-through. One afternoon, basic tools.
Hang the indoor unit
It clips onto the bracket. Two people makes it easy.
Connect the line set
Hand-tighten the quick connects. No vacuum pump, no gauges.
Power it up
Dedicated circuit, then it's running. Most finish in a day.
What buyers say
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Not sure? Ask before you buy.
Sizing, wiring, whether it'll heat your garage — send it over and you'll get a straight answer, usually same day. No pressure, no autodialer.