What's in the box
- MRCOOL® 36K DIY® 5th Gen 5-Zone Mini-Split Condenser
- DIYPro™ Communication Cable
- Wireless Remote Control
- Installation Accessories
- MRCOOL® Warranty
- Free U.S. curbside delivery within the Lower 48 States on qualifying orders
- Orders ship from U.S. warehouses
- Delivery times may vary by location and carrier availability
- Returns accepted within 30 days for unused and uninstalled products
- Approved returns may be subject to a restocking fee
MODEL: DIY-MULTI5-36HP230D-O
DIY Multi-Zone Climate Control for Larger Homes (Up to 5 Rooms / 1,500–1,800 sq. ft.)
Bring total climate control to your home with the MRCOOL® 36K DIY® 5th Generation Multi-Zone Mini-Split Condenser — the ultimate DIY heating and cooling solution for multiple spaces. Capable of powering up to 5 air handlers with a combined coverage of up to 1,800 sq. ft., this 3-ton condenser delivers outstanding efficiency and whisper-quiet operation.
With a SEER2 rating of 21.5 and HSPF2-4 of 9, it keeps your energy bills in check while providing year-round comfort. Thanks to MRCOOL®'s exclusive Quick Connect® pre-charged line sets with eco-friendly R-454B refrigerant, installation is fast, clean, and entirely DIY — no professional tools or vacuuming required. Line sets are sold separately.
Take full control of your home environment with the SmartHVAC® app, Amazon Alexa, and Google Assistant integration. Easily adjust temperatures, set schedules, and monitor energy use — all from your phone or voice command.
Protected by an industry-leading Limited Lifetime Compressor Replacement Warranty (with registration), this 5-zone condenser is built for long-lasting reliability and total home customization.
Why You’ll Love It
✅ Supports Up to 5 Zones — Heats and cools up to five rooms for tailored comfort.
✅ Hassle-Free DIY Installation — Uses MRCOOL® Quick Connect® pre-charged line sets for mess-free, tool-free setup.
✅ Energy Efficient Performance — SEER2 21.5 and HSPF2-4 9 for lower energy costs.
✅ Smart-Home Ready — WiFi enabled for SmartHVAC® app, Alexa, and Google Assistant control.
✅ Follow Me® Feature — Keeps your comfort consistent wherever you move.
✅ Ultra-Quiet Operation — DC inverter rotary compressor keeps sound levels low.
✅ Eco-Friendly R-454B Refrigerant — Safer, efficient, and future-ready.
✅ Lifetime Compressor Warranty — Limited Lifetime Compressor (registered), 7-Year Compressor, 5-Year Parts.
What You Need for a Complete System
To operate at full capacity, pair this condenser with:
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MRCOOL® DIY® 5th Gen Multi-Zone Air Handlers (up to 5 total)
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MRCOOL® Quick Connect® Pre-Charged Line Sets (available in multiple lengths — sold separately)
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DIYPro™ Communication Cables (25ft included with each air handler)
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 extended runs
This condenser is compatible only with MRCOOL® DIY® 5th Generation Multi-Zone Air Handlers.
| BTU Capacity | 36,000 BTU |
| Voltage | 208/230V |
| Zones Supported | Up to 5 |
| SEER2 | 21.5 |
| HSPF2-4 / HSPF2-5 | 9 / 7 |
| Refrigerant Type | R-454B |
| Line Set Compatibility | MRCOOL® Quick Connect® |
| Max Line Set Length (ft) | 246.1 |
| Liquid Line Size | 1/4″ |
| Suction Line Size | 3/8″ |
| Sound Rating (dBA) | 62 |
| Wi-Fi Compatibility | Yes (SmartHVAC App, Alexa, Google Assistant) |
| Warranty | Limited Lifetime Compressor (registered), 7-Year Compressor, 5-Year Parts |
Questions, answered
Everything homeowners ask before buying a MRCOOL® system.
Installation
What installation requirements apply to this product?
Installation requirements vary by product type. Selected complete MRCOOL® DIY systems are designed for homeowner installation when fitted in line with the manufacturer’s instructions, local codes and permit requirements.
Central HVAC systems, including Universal®, VersaPro®, Central Ducted Hyper Heat and packaged systems, are intended for professional installation by a qualified HVAC contractor. Licensed electrical work may also be required.
Components, thermostats, controls, line sets and accessories should be installed according to their product documentation and compatibility requirements. Always review the product page, manufacturer guidance and warranty conditions before installation.
Will I need any additional parts, tools or professional services?
Additional requirements vary by product and installation. Tools, electrical materials, mounting hardware, connecting components or other installation supplies may be required unless specifically stated as included.
Review the product description, specifications, installation information and What’s Included section, where available, before ordering.
Where can I find product documents or installation instructions?
Available specifications, installation instructions, owner’s manuals and manufacturer documents are provided on the product page where applicable.
Some simple accessories may not have a separate installation manual. Contact our team if you need help locating documentation for a particular product or model.
Sizing & Compatibility
How do I confirm this product is compatible with my equipment?
Review the product type, model number, dimensions, voltage, capacity, refrigerant type, connection sizes and compatibility information shown on the product page, where applicable.
Components, thermostats, controls and accessories must be matched to compatible equipment. Contact our team before ordering if you are uncertain about compatibility.
What should I check before ordering?
Confirm the product name and model number, together with any relevant dimensions, voltage, capacity, refrigerant type, connections and installation requirements.
For replacement components and accessories, compare the product specifications with your existing equipment and the relevant manufacturer documentation before placing your order.
What is included with this product?
The supplied items are listed in the What’s Included section or product description, where applicable. Only the products, components and accessories specifically stated are included.
Electrical materials, mounting equipment, connecting components or other installation supplies may need to be purchased separately unless expressly stated otherwise.
Warranty & Support
What warranty coverage applies to this product?
Warranty coverage varies by product and model. Eligible MRCOOL® products are covered according to the manufacturer’s warranty terms, registration requirements and installation conditions.
Accessories and individual components may have different coverage. Cool Heat Direct can provide available warranty documentation and general guidance, while warranty eligibility and claim decisions are determined by the manufacturer.
How can I get help before ordering?
Email support@coolheatdirect.com with the product name or model number and details about your project or existing equipment.
For compatibility questions, include the model numbers of any products you intend to connect, control, replace or use together.
Support hours: Monday–Friday, 9 AM–6 PM ET.
Shipping & Returns
How will my order be shipped?
Free standard shipping is available on eligible orders to the Lower 48 states and Washington, D.C.
Orders are generally processed within 3–5 business days, followed by approximately 5–12 business days in transit. Delivery timing varies by product availability, destination and carrier scheduling.
Smaller products may ship by parcel carrier. Larger equipment may be delivered curbside by freight carrier. The carrier may contact you to arrange a delivery appointment.
Can I return this product?
Return requests may be submitted within 30 calendar days of delivery. Products must be new, unused and uninstalled and, where applicable, unpowered. They must also be complete and in their original manufacturer packaging. Prior written authorization is required.
For approved change-of-mind returns, incorrect sizing or customer ordering errors, the customer is responsible for return freight and a 15% restocking fee applies.
Verified damaged, defective, incorrect or incomplete orders are handled separately under our full policy.

