What's in the box
- MRCOOL® 48K DIY® 5th Gen 6-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-MULTI6-48HP230D-O
DIY Whole-Home Comfort for Up to 6 Rooms (2,000 sq. ft.)
Upgrade your entire home’s climate control with the MRCOOL® 48K DIY® 5th Generation Multi-Zone Mini-Split Condenser — the most powerful and efficient DIY multi-zone system available. This advanced condenser powers up to 6 individual air handlers and delivers reliable, energy-efficient heating and cooling for spaces up to 2,000 sq. ft.
With an impressive SEER2 rating of 21.8 and HSPF2-4 of 10, it’s built for efficiency and lower utility costs. Thanks to the patented Quick Connect® pre-charged line sets filled with eco-friendly R-454B refrigerant, you can complete the installation without specialized HVAC tools or professional assistance. (Line sets sold separately.)
The system’s SmartHVAC® app compatibility lets you manage each zone from your smartphone or via voice commands with Amazon Alexa and Google Assistant. Customize your ideal indoor climate with scheduling, temperature controls, and system monitoring at your fingertips.
Protected by one of the best warranties in the industry — including a Limited Lifetime Compressor Warranty (with registration) — this system combines modern convenience, exceptional power, and future-ready eco-performance.
Why You’ll Love It
✅ Heats & Cools Up to 6 Zones — Ideal for whole-home coverage up to 2,000 sq. ft.
✅ 100% DIY Installation — Quick Connect® pre-charged line sets for tool-free, no-vacuum setup.
✅ High-Efficiency Performance — SEER2 21.8 and HSPF2-4 10 for serious energy savings.
✅ Smart Control — Manage zones via SmartHVAC® app, Alexa, or Google Assistant.
✅ Follow Me® Remote — Comfort follows you, adjusting temperatures where you are.
✅ Ultra-Quiet Rotary Compressor — Runs efficiently with a 64 dBA sound rating.
✅ Eco-Friendly Refrigerant — R-454B for reduced environmental impact and higher performance.
✅ Industry-Leading 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 6 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 distances
This condenser is only compatible with MRCOOL® DIY® 5th Gen Multi-Zone Air Handlers.
| BTU Capacity | 43,000 (Cooling) / 48,000 (Heating) |
| Voltage | 208/230V |
| Zones Supported | Up to 6 |
| SEER2 | 21.8 |
| HSPF2-4 / HSPF2-5 | 10 / 7.8 |
| Refrigerant Type | R-454B |
| Line Set Compatibility | MRCOOL® Quick Connect® |
| Max Line Set Length (ft) | 221.4 |
| Liquid Line Size | 1/4″ |
| Suction Line Size | (3/8″ x4) (1/2″ x2) |
| Sound Rating (dBA) | 64 |
| 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.

