What's in the box
- MRCOOL® 36K DIY® 5th Gen Mini-Split Condenser
- 25ft DIYPro™ Communication Cable
- Installation Accessories
- MRCOOL® Warranty Documents
Manuals & documents
MODEL: DIY-36-HP-C-230D25-O
High-Powered, DIY-Friendly Comfort for Large Spaces up to 1,500 sq. ft.
The MRCOOL® 36K BTU DIY® 5th Generation Mini-Split Condenser is built to deliver powerful, energy-efficient heating and cooling for expansive rooms and open spaces—without professional installation. Ideal for basements, large living rooms, home gyms, workshops, and retail areas up to 1,500 sq. ft.
With a pre-charged 25-foot Quick Connect® line set filled with eco-friendly R-454B refrigerant, this system eliminates the need for vacuuming and HVAC contractors. The included DIYPro™ cable offers enhanced durability, replacing traditional electrical conduit to resist damage from weather, animals, and yardwork hazards.
Enjoy full climate control via the SmartHVAC® app, Amazon Alexa, Google Assistant, or the included wireless remote. The Gold Fin® condenser coating adds an extra layer of corrosion resistance, making it an ideal choice for coastal, humid, or high-moisture environments.
Equipped with smart features like Auto Mode, Energy-Saving Timer, Auto Restart, and Anti-Mildew Protection, this system ensures optimal comfort, efficiency, and air quality. Backed by an industry-best Limited Lifetime Compressor Warranty, plus 7-year compressor and 5-year parts coverage, it’s a reliable investment in lasting home comfort.
Why You’ll Love It
✅ Perfect for Large Spaces — Comfortably heats and cools up to 1,500 sq. ft.
✅ DIY Installation Made Simple — Pre-charged Quick Connect® line set and DIYPro™ cable mean no specialty tools or pro installers needed
✅ Smart-Home Compatible — Control with SmartHVAC® app, Alexa, and Google Assistant
✅ Coastal-Ready Protection — Gold Fin® condenser coating ensures long-lasting performance in tough environments
✅ Low-Noise Operation — Quiet, efficient performance with a decibel rating of just 60.5 dBA
✅ Eco-Friendly Refrigerant — Pre-charged with high-efficiency R-454B refrigerant
✅ Best-in-Class Warranty — Limited Lifetime Compressor Warranty (with registration), 7-Year Compressor Warranty, 5-Year Parts Warranty
Important:
Always consider additional factors such as ceiling height, insulation quality, sun exposure, number of windows, climate, and the number of heat-producing appliances in your space when choosing the right system.
What You Need for a Complete System
To achieve full heating and cooling performance, pair this condenser with:
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MRCOOL® DIY® 5th Gen Air Handler (230V Compatible)
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MRCOOL® Quick Connect® Pre-Charged Line Set (25ft included)
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DIYPro™ Communication Cable (25ft included)
Optional Accessories:
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MRCOOL® Wall Mount Bracket
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Additional Quick Connect® Line Sets
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Coupler Kits for line set extensions
Note: This condenser is compatible exclusively with MRCOOL® DIY® 5th Gen Single-Zone Air Handlers (230V). Not compatible with 3rd or 4th Gen systems.
| Attribute | Details |
|---|---|
| Voltage | 208/230V |
| Phase | 1 |
| Cycle | 60 Hz |
| Cooling Capacity | 36,000 BTU |
| Heating Capacity | 36,000 BTU |
| Max Coverage Area | 1,500 sq. ft. |
| SEER2 | 18 |
| EER2 | 8.5 |
| HSPF2-4 | 8.5 |
| HSPF2-5 | 6.5 |
| Compressor Type | Rotary |
| Inverter | DC |
| WiFi Compatible | Yes |
| App Compatibility | iOS & Android |
| Voice Control | Alexa & Google Assistant |
| Corrosion-Resistant | Gold Fin® Coating |
| Net Dimensions (WxHxD) | 37.24" x 31.89" x 16.14" |
| Net Weight | 152.12 lbs |
| Warranty | Lifetime Limited*, 7-Year Compressor, 5-Year Parts |
Questions, answered
Everything homeowners ask before buying a MRCOOL® system.
Installation
Do I need an HVAC technician to install this?
No. MRCOOL® DIY systems are designed for homeowner installation. The pre-charged Quick Connect® line set means there's no refrigerant handling, no vacuum pump, and no special tools or license required.
How long does installation take?
Most single-zone systems go in within a few hours: mount the indoor air handler, set the outdoor condenser, connect the pre-charged line set, and power it on.
Do I need an electrician?
The system needs a dedicated circuit. Most homeowners have a licensed electrician add the breaker and disconnect — everything else you can do yourself.
Sizing & compatibility
What BTU size do I need?
As a rule of thumb: up to 400 sq ft → 9–12K BTU, 400–600 sq ft → 12–18K, 600–1,000 sq ft → 18–24K. Use the room-size guide above and factor in insulation, ceiling height and sun exposure.
Will it heat in winter?
Yes — these are heat pumps, so they heat and cool. Many MRCOOL® systems keep heating in sub-freezing temperatures; check each model's spec sheet for its low-temperature heating range.
115V or 230V — which do I need?
9K–12K units are usually 115V (standard outlet circuit); 18K and larger are typically 230V. The voltage is shown in the product options and specifications.
Warranty & support
What warranty is included?
MRCOOL® systems carry manufacturer warranty coverage — typically 5–10 years on major components when you register your system after installation.
How do I get help choosing or installing?
Email support@coolheatdirect.com — our U.S. team replies within one business day with sizing, voltage and compatibility help.
Shipping & returns
How fast does it ship?
Most products ship in 3–5 business days with free curbside delivery in the continental U.S. The freight carrier calls to schedule your delivery.
Can I return it?
Returns are accepted within 30 days on new, unopened items in original packaging. A restocking fee may apply to HVAC equipment — we always confirm before issuing a return authorization.

