MRCOOL DIY® 5th Gen 24,000 BTU Mini-Split Air Handler 230V – Single Zone, 751–1,000 Sq. Ft. | DIY-24-HP-WMAH-230D25-O
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MRCOOL® DIY® 5th Gen 24,000 BTU Mini-Split Air Handler – Single Zone, 230V
The MRCOOL® DIY® 5th Gen 24,000 BTU Mini-Split Air Handler is a powerful, energy-efficient indoor wall-mount unit designed for heating and cooling spaces from 751 to 1,000 sq. ft. Pair it with a compatible MRCOOL DIY condenser and QuickConnect® line set for a complete DIY mini split system — no HVAC license, vacuum pump, or professional tools required.
Why Choose MRCOOL DIY® 5th Gen?
- America’s #1 DIY Mini Split — The most trusted DIY mini split brand in the nation, built for quick setup and long-term reliability.
- QuickConnect® Compatible — Works with MRCOOL pre-charged QuickConnect® line sets for a fast, vacuum-free installation — no special tools needed.
- DIYPRO® Cable Compatible — Eliminates the need for electrical conduit. Built tough to withstand outdoor elements and wildlife for lasting performance.
- Multiple Wireless Control Options — Control via included remote, the SmartHVAC app (iOS & Android), or hands-free with Amazon Alexa or Google Assistant.
- Follow Me Function — Airflow automatically adjusts based on the remote’s location for consistent, even temperature throughout the room.
- Dry Mode — Works as a dehumidifier to reduce excess moisture and improve indoor air quality.
- Ultra-Quiet Operation — As low as 20 dB(A) on low fan speed — quieter than a whisper.
- Gold Fin® Coil Protection — Superior corrosion resistance, ideal for coastal homes and harsh climates.
- Best-in-Class Warranty — 7-year compressor warranty + 5-year parts warranty for total peace of mind.
- Certified Excellence — UL Listed, ETL Listed, AHRI Certified.
Product Overview
- 🏠 Zones: 1
- 📐 Coverage: 751–1,000 sq. ft.
- 🔧 Installation: DIY — No Professional Required
- ⚡ Voltage: 208-230V
- 🔇 Noise Level: As low as 20 dB(A)
- ⭐ Certification: UL Listed, ETL Listed, AHRI Certified
- 🧄 Refrigerant: R-454B
Specifications & Dimensions
| Capacity & Performance | |
|---|---|
| Capacity | 24,000 BTU |
| Coverage Area | 751–1,000 sq. ft. |
| Noise Level (Low/High) | 20 / 54 dB(A) |
| Electrical Requirements | |
| Voltage | 208-230V |
| Phase | 1 |
| Cycle | 60 Hz |
| Max Fuse Breaker | 15A |
| Min Circuit Ampacity | 3A |
| Refrigerant & Piping | |
| Refrigerant Type | R-454B |
| Liquid Line Size | 3/8" |
| Suction Line Size | 5/8" |
| Dimensions & Weight | |
| Dimensions | 42.52" W x 8.9" D x 13.19" H |
| Mount Type | Wall-Mounted |
| Weight | 35.93 lbs |
| Features | |
| Fan Only Option | Yes |
| Quiet Mode | Yes |
| Auto Cool | Yes |
| WiFi Compatibility | Yes |
| App Compatibility | Yes |
| Works with iOS | Yes |
| Works with Android | Yes |
| Remote Control Included | Yes |
| Certifications & Warranty | |
| Certifications | UL Listed, ETL Listed, AHRI Certified |
| Parts Warranty | 5 Years |
| Compressor Warranty | 7 Years |
Shipping & Returns
🚚 Free Curbside Delivery
All MRCOOL orders ship free via FedEx Ground, FedEx Freight, or an equivalent trusted carrier. Delivery is curbside only — please arrange assistance in advance as carriers are not able to bring items inside your home.
Tracking & Delivery
Tracking information is typically provided within 3–5 business days of your order. Once received, please allow 1–2 business days for tracking details to update.
↩️ Return Policy
30-Day Return Window
Returns must be requested within 30 days of your delivery date. We are unable to accept return requests after this period.
Return Conditions
To qualify for a return, items must be unused and uninstalled, and in original packaging including box and pallet.
Restocking Fee
A 35% restocking fee applies to all approved returns.
📄 View Full Shipping Policy | 📄 View Full Return & Refund Policy
Frequently Asked Questions
What condenser is compatible with this air handler?
This air handler is compatible with MRCOOL DIY® 5th Gen 24,000 BTU condensers. Always match BTU capacity and voltage when pairing components, and use a compatible MRCOOL QuickConnect® line set.
Can I install it myself, or do I need a professional?
Yes — that’s the beauty of the MRCOOL DIY® system. No HVAC tools or certification required. You connect the indoor and outdoor units yourself using a pre-charged QuickConnect® line set. The only professional you’ll need is a licensed electrician for the electrical hookup.
How quiet is it?
Very quiet — as low as 20 dB(A) on low fan speed, which is quieter than a whisper. Even on high, it runs at just 54 dB(A).
Is it Wi-Fi compatible?
Yes. Control your system from anywhere using the MRCOOL SmartHVAC app. It also works with Amazon Alexa and Google Assistant for hands-free voice control.
What is the warranty?
Your purchase is backed by MRCOOL’s best-in-class warranty:
- 7-Year Compressor Warranty
- 5-Year Parts Warranty
Recommended BTU By Room Size
| BTU Capacity | Recommended Room Size (Sq. Ft.) |
|---|---|
| 9,000 BTU | 151–350 sq. ft. |
| 12,000 BTU | 351–500 sq. ft. |
| 18,000 BTU | 501–750 sq. ft. |
| 24,000 BTU ← You Are Here | 751–1,000 sq. ft. |
| 36,000 BTU | 1,001–1,500 sq. ft. |
Note: Actual performance may vary depending on room insulation, ceiling height, number of windows, climate zone, and heat-generating appliances.
