MRCOOL® 36k DIY 5th Generation Mini-split Air Handler 230v
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MODEL: DIY-36-HP-WMAH-230D25-O
Maximum Power, Whisper-Quiet Comfort for Extra-Large Spaces up to 1,500 sq. ft.
The MRCOOL® 36k BTU DIY® 5th Generation Mini-Split Air Handler is built for serious climate control, offering powerful, energy-efficient heating and cooling for extra-large areas — ideal for open-plan living rooms, expansive basements, multi-room spaces, workshops, or bonus rooms up to 1,500 sq. ft.
With its fully DIY-friendly design, this air handler pairs effortlessly with your MRCOOL® DIY® 5th Gen Multi-Zone Condenser using a pre-charged 25-foot Quick Connect® line set with eco-friendly R-454B refrigerant. No vacuum pump, no gauges, and no expensive installation team required.
Enjoy total control from anywhere via the SmartHVAC® app, Amazon Alexa, Google Assistant, and the included wireless remote. The advanced Follow Me® feature ensures your preferred temperature follows you within the space, delivering precise, personalized comfort.
Coated with a durable Gold Fin® corrosion-resistant finish and backed by an industry-leading warranty, this unit guarantees year-round, ultra-quiet operation and long-lasting reliability.
Why You’ll Love It
✅ Designed for Extra-Large Spaces — Perfect for great rooms, expansive basements, large workshops, or bonus rooms up to 1,500 sq. ft.
✅ Hassle-Free DIY Installation — Connects easily with pre-charged Quick Connect® lines and the included 25ft DIYPro™ Communication Cable. No HVAC pro needed.
✅ Smart-Home Compatible — Seamlessly control your system via the SmartHVAC® app, Alexa, or Google Assistant.
✅ Follow Me® Comfort Technology — Automatically adjusts based on your location for precise, room-to-room comfort.
✅ Ultra-Quiet Operation — Runs between 29 and 49 dBA for quiet, discreet climate control.
✅ Gold Fin® Protection — Corrosion-resistant coating ensures extended durability and system life.
✅ Year-Round High-Capacity Performance — Cools down to 5°F and heats up to 86°F, delivering reliable comfort through every season.
✅ Industry-Leading Warranty — Limited Lifetime Compressor Warranty (with registration), 7-Year Compressor, and 5-Year Parts Warranty.
What’s Included:
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MRCOOL® 36K DIY® 5th Gen Mini-Split Air Handler
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25ft DIYPro™ Communication Cable
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Wireless Remote Control
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Installation Accessories
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MRCOOL® Warranty
Specifications
Specifications at a Glance
| Attribute | Details |
|---|---|
| BTU Capacity | 36,000 BTU |
| Voltage | 208-230V |
| Coverage Area | 1,000 – 1,500 sq. ft. |
| Sound Rating (dBA) | 29 – 49 |
| Wi-Fi Compatibility | Yes (SmartHVAC App, Alexa, Google Assistant) |
| Line Set Compatibility | MRCOOL® Quick Connect® |
| Cooling Operating Range | 5°F – 122°F |
| Heating Operating Range | 5°F – 86°F |
| Air Filter | Washable, reusable |
| Warranty | Limited Lifetime Compressor (registered), 7-Year Compressor, 5-Year Parts |
Room Size & BTU Coverage Guide
Choosing the right BTU (British Thermal Unit) output ensures your space stays consistently comfortable year-round. Use this quick reference chart to match your room size with the recommended cooling and heating capacity for your MRCOOL® DIY® 5th Gen Mini-Split Air Handler.
| BTU Rating | Ideal Room Size (Approx.) |
|---|---|
| 36,000 | 1,000 – 1,500 sq. ft. — ideal for great rooms, open basements, workshops, or multi-room spaces |
Important:
Always consider ceiling height, insulation, sun exposure, number of windows, climate, and heat-generating appliances when choosing the right system.
Still unsure which size is right?
Our MRCOOL-certified experts are happy to help — message us anytime!
What You Need for a Complete System
For full heating and cooling performance, pair this indoor air handler with:
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MRCOOL® DIY® 5th Gen Multi-Zone Condenser — Transfers heat outdoors for reliable, all-season climate control.
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MRCOOL® Quick Connect® Pre-Charged Line Set — Connects to the condenser with pre-charged refrigerant for simple, clean installation.
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DIYPro™ Communication Cable (25ft included) — Provides secure, efficient connection between the air handler and condenser.
Optional Accessories:
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MRCOOL® Wall Mount Bracket
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Additional Quick Connect® Line Sets (for extended distances)
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Coupler Kits (if line set extension is needed)
This air handler is not a stand-alone unit. It requires connection to a compatible MRCOOL® DIY® 5th Generation Multi-Zone Condenser for full operation.
It is not compatible with 3rd or 4th Generation MRCOOL® systems.
Installation
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