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MRCOOL 36,000 BTU DIY Hybrid™ Multi-Position Air Handler | R-454B - DIY-36-HP-MUAH-230D25-O
Summary
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unit is perfect for hassle-free installation without the need for professional help—making it an ideal replacement for outdated or inefficient HVAC systems.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. This 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.
Important
Designed for DIY installation with compatible MRCOOL condensers. Registration activates extended limited lifetime warranty. Multi-position installation flexibility (upflow, downflow, horizontal). Works with DIY MZ or 36K DIY Condenser.
What's Included
- 36,000 BTU Multi-Position Air Handler (Model DIY-36-HP-MUAH-230D25-O)
- MRCOOL® Smart Wi-Fi Thermostat
- Installation Manual
- User's Manual
- Service Manual
- Manufacturer Warranty Information
Features
- Multi-position installation (upflow, downflow, horizontal left/right)
- Built-in self-diagnostics panel for easy troubleshooting
- Smart Wi-Fi Thermostat with MRCOOL app compatibility
- Painted galvanized steel construction for durability
- Optional heat kit available (5kW, 8kW, 10kW, 15kW, 20kW)
- Electronic Expansion Valve (EEV) for precise control
- AHRI Certified
- 4 fan speeds
- UL, CSA, and ETL certified
- Replaceable filter system
- R-454B environmentally conscious refrigerant
- WiFi compatibility with iOS and Android apps
- Higher capacity heating (37,000 BTU)
Technical Specifications
| SKU/Model | DIY-36-HP-MUAH-230D25-O |
| UPC | 840255588416 |
| GTIN | 00840255588416 |
| Unit Type | Split System Ducted DIY Air Handler |
| Equipment Type | Air Handler |
| Configuration | Multi-Position |
| Net Weight | 128.31 lbs |
| Gross Weight | 153.66 lbs |
| Cooling Capacity | 36,000 BTU |
| Heating Capacity | 37,000 BTU |
| Maximum Coverage Area | 1,550 sq. ft. |
| Tonnage | 3 Tons |
| Refrigerant | R-454B |
| Electrical Requirements | 208/230V 1 Phase 60 Hz |
| Max Fuse Breaker | 15A |
| Min Circuit Ampacity | 6A |
| Rated Load | 4.5 |
| Net Dimensions (HxWxD) | 49.02" x 21.02" x 21.02" |
| Gross Dimensions (HxWxD) | 52.56" x 24.41" x 26.57" |
| Line Sizes | 3/8" (liquid), 5/8" (suction) |
| Line Set Included | Yes |
| Max Line Set Length | 246 ft |
| CFM Range | 1189 / 1083 / 971.2 / 865.2 |
| Number of Speeds | 4 |
| Drain Connection Size | 3/4" |
| Color | Gray |
Performance & Acoustic Data
| Noise Level (Average) | 45 dB |
| Noise Level (Low) | 31 dB |
| Noise Level (High) | 48 dB |
| Metering Device | EEV (Electronic Expansion Valve) |
| Filter Type | Replaceable (Refer to Installation Manual for size) |
Compatibility & Control Features
| Works With | DIY MZ or 36K DIY Condenser |
| WiFi Compatibility | Yes |
| App Compatibility | Yes |
| iOS Compatible | Yes |
| Android Compatible | Yes |
| Adjustable Thermostat | Yes |
| Remote Control Included | No |
Heating Options
| Auxiliary Heater Included | No |
| Auxiliary Heater Available | Yes |
| Auxiliary Heater Sizes | 5kW, 8kW, 10kW, 15kW, 20kW |
Certifications & Compliance
| UL Listed | Yes |
| CSA Certified | Yes |
| ETL Certified | Yes |
| Energy Star Certified | No |
| AHRI Certified | Yes |
| Restricted States | GU; PR; VI |
Warranty Information
- Extended Limited Lifetime warranty with registration*
- Base Warranty: 5 Year Parts
- Base Parts Warranty: 5 Years
Manuals & Downloads
Safety Information
PROPOSITION 65 WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
Product Contains: Electronics, Chemicals, Compressed Gas
Smart Control Features
The MRCOOL DIY Hybrid™ Air Handler 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. The system provides precise temperature control and monitoring capabilities for your 1,550 sq. ft. space.
Installation Advantages
This high-capacity ducted air handler offers exceptional installation flexibility with multi-position capability (upflow, downflow, horizontal left or right), making it adaptable to various home layouts. The built-in self-diagnostics panel simplifies troubleshooting by quickly identifying error codes and reducing downtime. The unit is designed for easy pairing with MRCOOL® DIY condensers for a complete DIY HVAC system solution. The included line set supports extended installations up to 246 feet.
Heating Options
For enhanced comfort during colder seasons, optional electric heat kits are available in multiple sizes (5kW, 8kW, 10kW, 15kW, 20kW) to provide reliable supplemental warmth and year-round versatility. The rugged painted galvanized steel cabinet ensures long-term durability and performance in various environmental conditions. The R-454B refrigerant offers high performance with reduced environmental impact.
Environmental & Efficiency Features
This powerful 3-ton unit uses R-454B refrigerant, an environmentally conscious option that provides high efficiency performance while minimizing environmental impact. With four fan speeds and electronic expansion valve control, the system optimizes energy usage while maintaining comfort levels throughout your 1,550 sq. ft. space. The higher heating capacity (37,000 BTU) ensures reliable warmth in larger areas.
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We will prepare your order within 24 hours if it’s received on a weekday (before noon). Orders are shipped in one to two business days. Transit time is between 3 to 6 business days, although exceptions apply. We email tracking information once your purchase is shipped.
Delivery Map
IMPORTANT DELIVERY INFORMATION: Please be kindly informed that this air conditioner, due to its weight and shipping restrictions, is shipped palletized with an arranged freight service and requires an appointment for delivery. To AVOID delays, please check if the provided phone number in the order details is a current number where you can be reached. You can also contact the carrier directly and refer to your tracking number to set up a date and time for your appointment. It is your responsibility to ensure a safe and secure environment for delivery. Please note that we cannot be held liable for any packages that are stolen or lost after delivery has been confirmed. PLEASE verify your shipping address, as changes to the address after freight has shipped can result in an additional 15% or higher fee depending on freight weight and dimensions.
SMALLWARES INFORMATION: Please be informed that for smaller items, such as Installation Kits, Smart Connectivity Dongles, and TTW Sleeves, when these items are ordered individually, they may be shipped via FedEx without a signature requirement. It is your responsibility to ensure a safe and secure environment for delivery. Please note that we cannot be held liable for any packages that are stolen or lost after delivery has been confirmed. Thank you for your understanding and cooperation.
INSPECT YOUR MERCHANDISE BEFORE SIGNING: Please inspect your boxes thoroughly when you receive them. They should arrive shrink-wrapped and on a pallet. If you notice any damages or imperfections (e.g. crushed box or forklift hole), please write comments on the receipt before signing for delivery, no matter how small damages seem. Contact us immediately to assist you.
Shipping & Delivery
We will prepare your order within 24–48 hours if it’s received on a weekday (before noon). Orders are shipped in one to two business days. Transit time is between 3 to 6 business days, although exceptions apply. We email tracking information once your purchase is shipped.
Delivery Map
IMPORTANT DELIVERY INFORMATION
Please be informed that this air conditioner, due to its weight and shipping restrictions, is shipped palletized with an arranged freight service and requires an appointment for delivery.
To AVOID delays, please make sure the phone number in your order details is accurate and one where you can be reached. You may also contact the carrier directly using your tracking number to schedule your delivery.
It is your responsibility to ensure a safe and secure delivery environment. We are not liable for any packages that are stolen or lost after delivery is confirmed.
Please verify your shipping address carefully. Changes to your shipping address after the freight has been shipped may result in additional fees of 15% or more, depending on freight weight and dimensions.
SMALLWARES INFORMATION
Smaller items such as Installation Kits, Smart Connectivity Dongles, and TTW Sleeves may be shipped via FedEx without a signature requirement if ordered individually.
It is your responsibility to ensure a safe delivery location. We are not liable for packages lost or stolen after delivery confirmation. Thank you for your understanding and cooperation.
INSPECT YOUR MERCHANDISE BEFORE SIGNING
Please inspect your boxes carefully upon delivery. Shipments should arrive shrink-wrapped and on a pallet. If you notice any damage or signs of mishandling (such as a crushed box or forklift puncture), write comments on the delivery receipt before signing, even if the damage appears minor.
Contact us immediately if any issues arise so we can assist you promptly.
SMS Delivery Notifications
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