
Original: $1,294.00
-70%$1,294.00
$388.20The Story
MRCOOL DIY® 5th Gen 36,000 BTU Multi-Zone Mini Split Air Handler – 230V
Model: DIY-36-HP-WMAH-230D25-O
Ideal Coverage: Up to 1,500 sq. ft. • Power: 230V • Refrigerant: R-454B
The MRCOOL® DIY® 36K BTU Multi-Zone Wall Mounted Air Handler is the largest available indoor unit in the 5th Generation lineup, engineered to deliver powerful performance for expansive areas such as open-concept living rooms, large garages, or commercial zones. Designed to integrate seamlessly with MRCOOL® multi-zone condensers, it provides year-round heating and cooling with cutting-edge smart controls and a true DIY installation experience.
🔥 Key Features
- DIY Installation: No vacuum pump or HVAC tools needed. Designed for fast and simple homeowner installation.
- Pre-Charged QuickConnect® Line Set: Uses R-454B refrigerant, factory-sealed and pressurized for easy connection.
- Environmentally Friendly Refrigerant: R-454B has a significantly lower Global Warming Potential than older R-410A systems.
- DIYPRO® Cable: Weatherproof and rodent-resistant armored power cable eliminates the need for separate electrical conduit.
- Wireless Smart Control: Control your comfort with the remote, SmartHVAC app, Amazon Alexa, or Google Assistant.
- Follow Me Mode: Enhanced comfort control by adjusting airflow based on the location of the remote.
- Dry Mode: Removes excess humidity from the room for improved indoor air quality.
📏 Room Size Coverage
Engineered to cool or heat large areas up to 1,500 square feet, this 36K BTU unit is ideal for basements, open-plan spaces, or workshops.
🛡️ Warranty You Can Count On
- Compressor: 7-Year Limited Warranty
- Parts: 5-Year Limited Warranty
- Lifetime Unit Replacement: Available with MRCOOL® Care Program enrollment
⚠️ Compatibility Notice
This 5th Gen air handler is pre-charged with R-454B refrigerant and is not compatible with older R-410A systems. Only pair with MRCOOL® 5th Generation multi-zone condensers.
Order from MRCOOL DIY Direct—America’s trusted leader in DIY HVAC solutions, replacement parts, and accessories.
Specifications & Dimensions
| Specification | Details |
|---|---|
| Model Number | DIY-36-HP-WMAH-230D25-O |
| Cooling Capacity | 36,000 BTU/h |
| Heating Capacity | 36,000 BTU/h |
| Recommended Coverage Area | Up to 1,500 sq. ft. |
| Power Supply | 208–230V, 60Hz, 1 Phase |
| Minimum Circuit Ampacity | 8 A (est.) |
| Maximum Fuse | 25 A (est.) |
| Refrigerant Type | R-454B |
| Line Set Size | 3/8" Liquid x 5/8" Gas |
| Communication Cable Included | Yes, 4-conductor |
| Wireless Control | Remote, SmartHVAC App, Alexa, Google Assistant |
| Remote Sensor (Follow Me) | Yes |
| Dry Mode Function | Yes |
| Mounting Type | Wall-Mounted |
| Dimensions (WxDxH) | Approx. 50" x 10.5" x 14.5" |
| Net Weight | Approx. 45 – 50 lbs |
| ETL Listing Number | 5031495 |

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
MRCOOL DIY® 5th Gen 36,000 BTU Multi-Zone Mini Split Air Handler – 230V
Model: DIY-36-HP-WMAH-230D25-O
Ideal Coverage: Up to 1,500 sq. ft. • Power: 230V • Refrigerant: R-454B
The MRCOOL® DIY® 36K BTU Multi-Zone Wall Mounted Air Handler is the largest available indoor unit in the 5th Generation lineup, engineered to deliver powerful performance for expansive areas such as open-concept living rooms, large garages, or commercial zones. Designed to integrate seamlessly with MRCOOL® multi-zone condensers, it provides year-round heating and cooling with cutting-edge smart controls and a true DIY installation experience.
🔥 Key Features
- DIY Installation: No vacuum pump or HVAC tools needed. Designed for fast and simple homeowner installation.
- Pre-Charged QuickConnect® Line Set: Uses R-454B refrigerant, factory-sealed and pressurized for easy connection.
- Environmentally Friendly Refrigerant: R-454B has a significantly lower Global Warming Potential than older R-410A systems.
- DIYPRO® Cable: Weatherproof and rodent-resistant armored power cable eliminates the need for separate electrical conduit.
- Wireless Smart Control: Control your comfort with the remote, SmartHVAC app, Amazon Alexa, or Google Assistant.
- Follow Me Mode: Enhanced comfort control by adjusting airflow based on the location of the remote.
- Dry Mode: Removes excess humidity from the room for improved indoor air quality.
📏 Room Size Coverage
Engineered to cool or heat large areas up to 1,500 square feet, this 36K BTU unit is ideal for basements, open-plan spaces, or workshops.
🛡️ Warranty You Can Count On
- Compressor: 7-Year Limited Warranty
- Parts: 5-Year Limited Warranty
- Lifetime Unit Replacement: Available with MRCOOL® Care Program enrollment
⚠️ Compatibility Notice
This 5th Gen air handler is pre-charged with R-454B refrigerant and is not compatible with older R-410A systems. Only pair with MRCOOL® 5th Generation multi-zone condensers.
Order from MRCOOL DIY Direct—America’s trusted leader in DIY HVAC solutions, replacement parts, and accessories.
Specifications & Dimensions
| Specification | Details |
|---|---|
| Model Number | DIY-36-HP-WMAH-230D25-O |
| Cooling Capacity | 36,000 BTU/h |
| Heating Capacity | 36,000 BTU/h |
| Recommended Coverage Area | Up to 1,500 sq. ft. |
| Power Supply | 208–230V, 60Hz, 1 Phase |
| Minimum Circuit Ampacity | 8 A (est.) |
| Maximum Fuse | 25 A (est.) |
| Refrigerant Type | R-454B |
| Line Set Size | 3/8" Liquid x 5/8" Gas |
| Communication Cable Included | Yes, 4-conductor |
| Wireless Control | Remote, SmartHVAC App, Alexa, Google Assistant |
| Remote Sensor (Follow Me) | Yes |
| Dry Mode Function | Yes |
| Mounting Type | Wall-Mounted |
| Dimensions (WxDxH) | Approx. 50" x 10.5" x 14.5" |
| Net Weight | Approx. 45 – 50 lbs |
| ETL Listing Number | 5031495 |


