MRCOOL® 24k DIY 5th Generation Mini-split Air Handler 230v
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Warranty Protection
Trusted Returns Policy
MODEL: DIY-24-HP-WMAH-230D25-O
Heavy-Duty, High-Capacity Comfort for Spaces up to 1,000 sq. ft.
The MRCOOL® 24k BTU DIY® 5th Generation Mini-Split Air Handler delivers serious heating and cooling power with whisper-quiet, energy-efficient operation — perfect for large open-concept living rooms, basements, bonus rooms, workshops, or oversized master bedrooms up to 1,000 sq. ft.
Designed for fully DIY-friendly installation, this air handler pairs easily with your MRCOOL® DIY® 5th Gen Multi-Zone Condenser via a pre-charged 25-foot Quick Connect® line set with eco-friendly R-454B refrigerant. No vacuum pump, no gauges, no expensive HVAC installer.
Control your comfort with ease using the SmartHVAC® app, Amazon Alexa, Google Assistant, and the included wireless remote. Thanks to Follow Me® technology, your room stays perfectly adjusted to your exact location — delivering balanced, room-to-room temperature precision.
Built to last, this unit features a Gold Fin® corrosion-resistant coating and comes backed by one of the best warranties in the industry, ensuring long-term, reliable performance through every season.
Why You’ll Love It
✅ Perfect for Larger Spaces — Ideal for oversized bedrooms, open-plan living areas, finished basements, and large bonus rooms up to 1,000 sq. ft.
✅ Simple DIY Installation — Pre-charged Quick Connect® lines and included 25ft DIYPro™ Communication Cable mean no vacuuming, gauges, or HVAC tech needed.
✅ Smart-Home Compatible — Wi-Fi enabled for full control via the SmartHVAC® app, Alexa, or Google Assistant.
✅ Follow Me® Comfort Technology — Adjusts system output based on your exact location for personalized comfort.
✅ Ultra-Quiet Operation — Runs between 27 and 45 dBA for peaceful, unobtrusive performance.
✅ Gold Fin® Protection — Corrosion-resistant coating ensures long-lasting durability.
✅ Year-Round Performance — Cools down to 5°F and heats up to 86°F for dependable, all-season comfort.
✅ Industry-Leading Warranty — Limited Lifetime Compressor Warranty (with registration), 7-Year Compressor, and 5-Year Parts Warranty.
What’s Included:
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MRCOOL® 24K DIY® 5th Gen Mini-Split Air Handler
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25ft DIYPro™ Communication Cable
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Wireless Remote Control
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Installation Accessories
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MRCOOL® Warranty
Specifications
Specifications at a Glance
| Attribute | Details |
|---|---|
| BTU Capacity | 24,000 BTU |
| Voltage | 208-230V |
| Coverage Area | 750 – 1,000 sq. ft. |
| Sound Rating (dBA) | 27 – 45 |
| Wi-Fi Compatibility | Yes (SmartHVAC App, Alexa, Google Assistant) |
| Line Set Compatibility | MRCOOL® Quick Connect® |
| Cooling Operating Range | 5°F – 122°F |
| Heating Operating Range | 5°F – 86°F |
| Air Filter | Washable, reusable |
| Warranty | Limited Lifetime Compressor (registered), 7-Year Compressor, 5-Year Parts |
Room Size & BTU Coverage Guide
Choosing the right BTU (British Thermal Unit) output ensures your space stays consistently comfortable year-round. Use this quick reference chart to match your room size with the recommended cooling and heating capacity for your MRCOOL® DIY® 5th Gen Mini-Split Air Handler.
| BTU Rating | Ideal Room Size (Approx.) |
|---|---|
| 24,000 | 750 – 1,000 sq. ft. — ideal for large open-concept living areas, basements, or oversized bedrooms |
Important:
Always consider ceiling height, insulation, sun exposure, number of windows, climate, and heat-generating appliances when choosing the right system.
What You Need for a Complete System
For full heating and cooling performance, pair this indoor air handler with:
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MRCOOL® DIY® 5th Gen Multi-Zone Condenser — Powers your climate control system by transferring heat outdoors for reliable heating and cooling.
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MRCOOL® Quick Connect® Pre-Charged Line Set — Connects the air handler to the condenser with pre-charged refrigerant for clean, easy installation.
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DIYPro™ Communication Cable (25ft included) — Provides secure, efficient communication between the air handler and condenser.
Optional Accessories:
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MRCOOL® Wall Mount Bracket
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Additional Quick Connect® Line Sets (for extended distances)
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Coupler Kits (if line set extension is needed)
This air handler is not a stand-alone unit. It requires connection to a compatible MRCOOL® DIY® 5th Generation Multi-Zone Condenser for full operation.
It is not compatible with 3rd or 4th Generation MRCOOL® systems.
Installation
Installation & Guides
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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