MRCOOL DIY® 36,000 BTU DIY Hybrid™ Air Handler 230V – Single Zone, Up to 1,500 Sq. Ft. | DIY-36-HP-MUAH-230D25-O
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MRCOOL® DIY® 36,000 BTU DIY Hybrid™ Air Handler – Single Zone, 230V
The MRCOOL® DIY® 36,000 BTU DIY Hybrid™ Air Handler is a smart, flexible ducted indoor unit designed for heating and cooling large spaces up to 1,500 sq. ft. Compatible with MRCOOL DIY MZ or 36K DIY condensers, it supports upflow, downflow, and horizontal left or right installation — making it ideal for closets, attics, crawl spaces, and utility rooms. Includes a Smart Wi-Fi Thermostat for touchscreen and app-based control right out of the box.
Why Choose MRCOOL DIY® Hybrid™?
- Multi-Position Installation — Installs in upflow, downflow, horizontal left, or horizontal right configurations for maximum placement flexibility.
- Includes Smart Wi-Fi Thermostat — Control your system via touchscreen or the MRCOOL SmartHVAC app (iOS & Android) — no separate thermostat purchase needed.
- Eco-Friendly R-454B Refrigerant — Lower Global Warming Potential (GWP) than R-410A for better efficiency and a reduced environmental footprint.
- 4-Speed Fan — Precise airflow control for consistent comfort across large spaces.
- Auxiliary Heater Ready — Compatible with MVPHK auxiliary heaters (5kW, 8kW, 10kW, 15kW, 20kW) for supplemental heat in colder climates.
- Built-In Self-Diagnostics — Quickly identifies error codes to simplify troubleshooting and reduce service calls.
- Durable Painted Galvanized Steel Cabinet — Built to withstand wear for long-lasting performance.
- Energy Star Certified — Meets strict energy efficiency guidelines for lower utility bills.
- Certified Excellence — UL Listed, CSA Certified, ETL Listed, AHRI Certified, Energy Star Certified.
Product Overview
- 🏠 Zones: 1
- 📐 Coverage: Up to 1,500 sq. ft.
- 🔧 Installation: DIY — Upflow, Downflow, Horizontal Left or Right
- ⚡ Voltage: 208-230V
- ⭐ Certification: UL Listed, CSA Certified, ETL Listed, AHRI Certified, Energy Star Certified
- 🧄 Refrigerant: R-454B
- 🌡️ Compatible With: MRCOOL DIY MZ or 36K DIY Condenser
What’s in the Box
- ✅ 36,000 BTU DIY Hybrid™ air handler
- ✅ MRCOOL Smart Wi-Fi Thermostat
Specifications & Dimensions
| Capacity & Performance | |
|---|---|
| Cooling & Heating Capacity | 36,000 BTU |
| Coverage Area | Up to 1,500 sq. ft. |
| Decibel Rating | 31 to 48 dB(A) |
| Number of Speeds | 4 |
| Electrical Requirements | |
| Voltage | 208-230V |
| Phase | 1 |
| Cycle | 60 Hz |
| Max Fuse Breaker | 15A |
| Min Circuit Ampacity | 6A |
| Rated Load | 4.5A |
| Refrigerant & Piping | |
| Refrigerant Type | R-454B |
| Liquid Line Size | 3/8" |
| Suction Line Size | 5/8" |
| Drain Connection Size | 3/4" |
| Dimensions & Weight | |
| Dimensions | 21.02" W x 21.02" D x 49.02" H |
| Weight | 128.31 lbs |
| Features | |
| Installation Positions | Upflow, Downflow, Horizontal Left, Horizontal Right |
| WiFi Compatibility | Yes |
| Works with iOS | Yes |
| Works with Android | Yes |
| Smart Wi-Fi Thermostat | Included |
| Remote Control | Not Included |
| Auxiliary Heater | Not Included (Compatible: MVPHK 5kW, 8kW, 10kW, 15kW, 20kW) |
| Certifications & Warranty | |
| Certifications | UL Listed, CSA Certified, ETL Listed, AHRI Certified, Energy Star Certified |
| Parts Warranty | 5 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 the MRCOOL DIY MZ or 36K DIY condenser. Always match BTU capacity and voltage when pairing components.
Does it come with a thermostat?
Yes — the MRCOOL Smart Wi-Fi Thermostat is included. You can control the system via the touchscreen thermostat or the MRCOOL SmartHVAC app on iOS or Android.
Can I add auxiliary heat?
Yes. This air handler is compatible with MVPHK auxiliary heaters in 5kW, 8kW, 10kW, 15kW, and 20kW sizes, sold separately. The 36K model supports up to 20kW auxiliary heat — ideal for very cold climates.
What installation positions are supported?
The DIY Hybrid™ air handler supports upflow, downflow, horizontal left, and horizontal right — making it suitable for closets, attics, crawl spaces, and utility rooms.
What is the warranty?
This air handler is backed by a 5-Year Parts Warranty from MRCOOL.
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 | 751–1,000 sq. ft. |
| 36,000 BTU ← You Are Here | 1,000–1,500 sq. ft. |
Note: Actual performance may vary depending on room insulation, ceiling height, number of windows, climate zone, and heat-generating appliances.
