MRCOOL® DIY® 4th Gen 36K BTU 4-Zone Ductless Heat Pump Condenser
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Warranty Protection
Trusted Returns Policy
MODEL: DIY-MULTI4-36HP230C
Flexible, Efficient Climate Control for 4 Separate Spaces
The MRCOOL® DIY 4th Generation 36,000 BTU 4-Zone Multi-Zone Ductless Heat Pump Condenser delivers powerful, efficient heating and cooling for up to 4 independent zones. With an outstanding SEER efficiency rating of up to 21.5, this system ensures significant energy savings while maintaining reliable, year-round comfort—even when outside temperatures plummet to -13°F.
Perfect for larger homes, additions, offices, or multi-room spaces, this system features whisper-quiet, energy-efficient operation paired with true DIY-friendly installation. Thanks to MRCOOL®’s Pre-Charged Quick Connect® Line Sets, which come pre-filled with environmentally safe R-410A refrigerant, homeowners can easily install this system without vacuum pumps, HVAC technicians, or specialty tools—just a few basic wrenches.
The corrosion-resistant Gold Fin® condenser coating ensures long-term durability even in challenging coastal or high-humidity environments. A high-performance rotary DC inverter compressor ensures quiet, consistent, and efficient climate control across all connected zones.
And for extra peace of mind, it’s backed by an industry-exclusive Limited Lifetime Compressor Warranty (with registration), along with a 7-Year Compressor and 5-Year Parts Warranty — making it one of the most dependable multi-zone systems available for residential applications.
Why You’ll Love It
✅ Multi-Zone Flexibility — Provides efficient heating and cooling for up to four independent rooms or zones from a single outdoor condenser
✅ DIY-Friendly Installation — Pairs seamlessly with Pre-Charged Quick Connect® Line Sets; no vacuuming, no special tools, no HVAC tech required
✅ High-Efficiency SEER 21.5 Performance — Delivers lower energy bills while ensuring consistent year-round comfort
✅ Reliable Operation in Extreme Cold — Maintains efficient heating performance in outdoor temperatures as low as -13°F
✅ Gold Fin® Corrosion-Resistant Condenser — Built tough to resist corrosion in humid or coastal climates
✅ Smart Wi-Fi Control Ready — Compatible with the SmartHVAC® app, Amazon Alexa, and Google Assistant
✅ Industry-Leading Warranty — Includes Limited Lifetime Compressor Warranty (with registration), 7-Year Compressor, and 5-Year Parts Warranty
✅ Quiet Rotary DC Inverter Compressor — Smooth, energy-efficient, and ultra-quiet operation for discreet comfort
What’s Included:
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MRCOOL® 36K BTU 4-Zone 4th Gen Multi-Zone Condenser (208-230V)
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MRCOOL® Warranty Documents
Specifications
Specifications at a Glance
| Attribute | Details |
|---|---|
| Cooling Capacity (BTU) | 36,000 |
| Heating Capacity (BTU) | 36,000 |
| Voltage | 208-230V |
| Phase | 1 |
| Cycle | 60 Hz |
| Zone Capacity | Up to 4 |
| Refrigerant Type | R-410A |
| Refrigerant Volume (oz) | 134.04 |
| SEER / SEER2 | 21.5 / 21.5 |
| HSPF (4/5) | 11 / 8.5 |
| EER / EER2 | 10.5 / 10.5 |
| Max Fuse Breaker (A) | 45 |
| Min Circuit Ampacity (A) | 27 |
| Min Ambient Cooling (°F) | 5 |
| Min Ambient Heating (°F) | -13 |
| Max Total Line Set Length (ft) | 221 |
| Liquid Line Size | 1/4” (3/8” w/ adapter) |
| Suction Line Size | 1/2” (5/8” w/ adapter) |
| Condenser Motor Type | Rotary DC Inverter |
| Condenser Fan Motor RPM | 1000 / 900 / 750 |
| Noise Level (dBA) | 65 |
| Wi-Fi Enabled | Yes |
| App Compatibility | iOS & Android |
| Remote Control Included | No (via paired air handlers) |
| Warranty | Lifetime Compressor (registration required), 7-Year Compressor, 5-Year Parts |
| Net Dimensions (WxHxD) | 37.24” x 31.89” x 16.14” |
| Gross Dimensions (WxHxD) | 42.91” x 35.04” x 19.88” |
| Net Weight | 170.42 lbs |
| Gross Weight | 188 lbs |
Room Size & BTU Coverage Guide
Choosing the right BTU (British Thermal Unit) output ensures your space stays consistently comfortable all year round.
| BTU Rating | Ideal Combined Room Size |
|---|---|
| 18,000 | 600–800 sq. ft. |
| 27,000 | 900–1,200 sq. ft. |
| 36,000 | 1,200–1,500 sq. ft. |
| 48,000 | 1,500–2,000 sq. ft. |
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
This condenser requires pairing with:
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Compatible MRCOOL® DIY® 4th Gen Multi-Zone Air Handlers
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Pre-Charged Quick Connect® Line Sets (sold separately)
Optional Accessories:
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MRCOOL® Wall Mount Brackets or Ground Pads for Condenser
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Line Sets Coupler Kits
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Additional Line Sets
Installation
Installation & Manuals
Shipping & Returns
Shipping Policy
At Cool Heat Direct, we offer free curbside delivery on all MRCOOL product orders via FedEx Ground, FedEx Freight, or trusted carriers depending on order size.
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Deliveries are made to the curbside — please arrange assistance for heavy or large items, as drivers do not carry items indoors or upstairs.
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Tracking details will be sent within 3–5 business days after placing your order.
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Freight shipments are scheduled directly by the carrier using the contact information you provide at checkout.
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Please inspect your shipment upon delivery and report any visible damage on the delivery receipt.
Return Policy
We want you to love your purchase from Cool Heat Direct. If you need to return an item:
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Contact us within 30 days of delivery.
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Items must be unused, uninstalled, and in their original packaging.
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A 35% restocking fee applies to all approved returns.
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Accessories such as line sets, wall mounts, and couplers are non-returnable.
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Return shipping is the customer’s responsibility unless the item is damaged or defective on arrival.
To start a return, please email us at support@coolheatdirect.com with your order number and reason for return.
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