MRCOOL DIY 5th Gen 36,000 BTU Mini-Split | Up to 1,550 Sq Ft, 230V, No Technician Required
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🛡 Warranty: Manufacturer warranty included. Coverage varies by product — see product description below for full warranty details.
Best for: Large garages, shops, open-plan cabins, and high-load spaces where 36K BTU capacity is actually justified.
Why people buy it: Serious ductless capacity with MRCOOL's DIY pre-charged line-set approach.
Watch out for: This is not a casual weekend appliance. Confirm load, mounting, drainage, electrical, and whether your local code expects a permit.
The 36,000 BTU is the largest single-zone unit in the MRCOOL DIY 5th Gen line and covers a full homestead home up to 1,550 square feet. If you're heating and cooling an open-plan off-grid home, a large converted barn, or a substantial workshop on a single system without hiring a contractor, this is the unit that makes it possible. The same pre-charged quick-connect installation that defines the DIY line applies here: no vacuum pump, no refrigerant certification, no licensed HVAC technician at any step.
MRCOOL DIY 36,000 BTU Key Features
- True DIY installation — pre-charged R-454B quick-connect line set; the largest single-zone mini-split you can legally install yourself
- Heats down to -13°F — cold-climate heat pump performance rated for year-round use in northern states
- Covers up to 1,550 sq ft — full homestead home coverage from a single wall-mount system
- 230V operation — requires a dedicated 240V circuit; 3-ton capacity from a single installation point
- WiFi and voice control — MRCOOL Smart HVAC app on iOS/Android; Google Assistant and Alexa compatible
- Gold Fin condenser coil — corrosion-resistant coating for extended outdoor unit lifespan
- A2L refrigerant leak detection — built-in alarm sensor for R-454B compliance
- Energy Star certified — eligible for federal and state efficiency rebates
Specifications
| Cooling Capacity | 36,000 BTU |
| Heating Capacity | 36,000 BTU |
| Coverage Area | Up to 1,550 sq ft |
| Voltage | 208-230V, 60Hz, 1PH |
| Refrigerant | R-454B (pre-charged) |
| Included Line Set Length | 25 ft |
| Max Line Set Length | 82 ft |
| Min Operating Temp (Heating) | -13°F |
| Model Number | DIY-36-HP-WM-230D25-O |
| Certifications | UL, ETL, AHRI, Energy Star |
| Warranty | 5 years parts / 7 years compressor |
What's Included
- Indoor wall-mount air handler
- Outdoor condenser unit (pre-charged with R-454B)
- 25 ft pre-charged quick-connect line set
- Smart HVAC Controller Module (WiFi)
- DIYPro cable
- Remote control
- Installation hardware and mounting plate