MRCOOL
MRCOOL 36K MRCOOL® DIY Hybrid™ Air Handler
3 Ton | R-454B | 208/230V
- 36000 BTU cooling capacity
- Uses R-454B refrigerant
- Runs on 208/230V power
Key Specifications
Product Overview
The 36K MRCOOL® DIY Hybrid Air Handler offers a powerful and adaptable solution for heating and cooling areas up to 1,500 square feet. Engineered for compatibility with MRCOOL® DIY condensers, this unit is perfect for hassle-free installation without the need for professional help—making it an ideal replacement for outdated or inefficient HVAC systems. Its rugged painted galvanized steel cabinet ensures long-term durability, while the integrated self-diagnostics panel streamlines maintenance by displaying error codes for quick and accurate issue identification.
Designed with flexibility in mind, the air handler supports multiple installation styles, including upflow, downflow, and horizontal left or right, allowing it to fit a wide range of home configurations with ease. It uses R454B refrigerant, a high-performance, eco-friendly option that reduces environmental impact without sacrificing efficiency. For enhanced comfort during colder seasons, an optional electric heat kit can be added to provide reliable supplemental warmth and year-round versatility.
The system also comes equipped with the MRCOOL® Smart Wi-Fi Thermostat, offering intuitive climate control through a user-friendly touchscreen or the MRCOOL® mobile app. Adjusting your home’s temperature is simple and convenient, whether you're relaxing at home or managing settings remotely.
Covered by a 5-year parts warranty, the 36K MRCOOL® DIY Hybrid Air Handler delivers energy efficiency, advanced performance, and dependable comfort—making it a smart, cost-effective upgrade for modern homes.
Additional specifications
| UPC | 840255588416 |
|---|---|
| Series | DIY Hybrid™ Air Handler |
| Configuration | Multi-Position |
| Heating capacity (BTU/h) | 37000 |
| Airflow (CFM) | 1189 / 1083 / 971.2 / 865.2 / / |
| Cycle (Hz) | 60 |
| Min circuit ampacity (A) | 6 |
| Max fuse / breaker (A) | 15 |
| Metering device | EEV |
| Max line set length (ft) | 246 |
| Drain connection (in) | 3/4 |
| Filter type | Replaceable |
| Filter size | Refer to Installation Manual |
| Max coverage area | 1550 |
| Sound level low (dBA) | 31 |
| Sound level high (dBA) | 48 |
| Aux heater included | No |
| Aux heater available | Yes |
| Aux heater sizes (kW) | 5kW, 8kW, 10kW, 15kW, 20kW |
| Wi-Fi capable | Yes |
| Remote included | No |
| AHRI certified | Yes |
| ENERGY STAR certified | No |
| UL listed | Yes |
| Parts warranty (years) | 5 Years |
| Shipping W x H x D (in) | 24.41 x 52.56 x 26.57 |
| Shipping weight (lbs) | 153.66 |
Documents
- Installation manual (PDF)
- Service manual (PDF)
- Brochure (PDF)
- Warranty (PDF)
- AHRI certificate (PDF)
- EnergyGuide label (PDF)
WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.
Technical Specifications
Performance
| System Type | Split System Ducted DIY Air Handler |
|---|---|
| Capacity | 36000 BTU |
| Tonnage | 3 Ton |
| Sound Level | 45 dBA |
Electrical & Fuel
| Voltage | 208/230V |
|---|---|
| Phase | Single Phase |
| Refrigerant | R-454B |
| Connection Size | Liquid 3/8" / Suction 5/8" |
Physical & Certifications
| Dimensions (W x H x D) | 21.02 x 49.02 x 21.02 |
|---|---|
| Weight | 128.31 lb |
| Color / Finish | Gray |
Shipping & Delivery
Installation video
Published by MRCOOL. Watch the full walkthrough before you start, and follow the installation manual for this model — the video is a guide, not a substitute for it.
Manufacturer Warranty
Covered by MRCOOL's limited warranty. Warranty terms are set by MRCOOL and differ by product line — whether registration is required, and whether the installation has to be performed by a state-licensed HVAC contractor, is not the same across the range. In every case coverage depends on the unit being installed according to MRCOOL's instructions and all applicable codes and permits. MRCOOL's warranty document for this model is the controlling source; ask us and we'll send you the one that applies.
Professional Installation Recommended
Most HVAC equipment must be installed and connected by a licensed professional to remain safe, code-compliant, and eligible for manufacturer warranty coverage. If you're unsure about installation requirements, contact us before you order.
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