MRCOOL® DIY® 4th Gen 36K BTU 4-Zone Ductless Heat Pump Condenser
MODEL: DIY-MULTI4-36HP230C
Product Description
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 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 & Manuals
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.
👉 Click here for our full Shipping Policy
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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