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The Midea MO4EX-H27B-2A is a high-efficiency multi-zone heat pump outdoor unit designed to connect up to four indoor units for customized whole-home comfort. Featuring advanced inverter technology and environmentally friendly R454B refrigerant, it delivers reliable heating down to -13°F (-25°C) while providing exceptional seasonal efficiency.
The Midea MO4EX-H27B-2A outdoor heat pump is engineered for homeowners seeking flexible comfort across multiple living spaces. Designed as part of Midea's Multi-Zone System, it connects up to four compatible indoor units, allowing each room to maintain independent temperature control while operating from a single outdoor condenser.
Powered by Midea's inverter compressor technology, the system continuously adjusts compressor speed and fan operation to match heating and cooling demand. This minimizes energy consumption, reduces temperature fluctuations, and provides quieter operation compared with conventional fixed-speed systems.
This model delivers a rated cooling capacity of 27,000 BTU with a capacity range of 7,200–32,000 BTU and provides dependable heating performance even during extreme Canadian winters, operating at outdoor temperatures as low as -13°F (-25°C).
Proper installation is essential for achieving the published efficiency ratings. The outdoor unit must be sized correctly according to the home's heating and cooling load, indoor unit combination, refrigerant piping lengths, and electrical requirements. Professional installation also ensures proper refrigerant charging, line set sizing, condensate management, airflow balancing, and electrical protection.
The MO4EX-H27B-2A uses environmentally improved R454B refrigerant and supports both ducted and ductless indoor equipment, making it an excellent solution for new construction, renovations, home additions, or replacing older multi-zone systems while maintaining exceptional comfort and energy performance.
| Specification | Value |
|---|---|
| Model | MO4EX-H27B-2A |
| Product Type | Multi-Zone Heat Pump Outdoor Unit |
| Rated Cooling Capacity | 27,000 BTU/hr |
| Cooling Capacity Range | 7,200–32,000 BTU/hr |
| Rated Heating Capacity | 27,000 BTU/hr |
| Heating Capacity @47°F | 27,000 BTU/hr |
| Heating Operating Temperature | -13°F to 75°F (-25°C to 24°C) |
| Cooling Operating Temperature | -13°F to 122°F (-25°C to 50°C) |
| Refrigerant | R454B |
| Compressor Type | Rotary Inverter |
| Efficiency | 25.0 SEER2 |
| HSPF2 | 9.5 |
| EER2 | 13 |
| COP | 3.8 |
| Electrical Supply | 208/230V, 1 Phase, 60Hz |
| MCA | 23 A |
| MOCP | 25 A |
| Outdoor Sound Level | 61 dBA |
| Outdoor Airflow | 2,131 CFM |
| Liquid Line | 4 × 1/4 in |
| Gas Line | 3 × 3/8 in + 1 × 1/2 in |
| Maximum Total Pipe Length | 262 ft |
| Maximum Single Indoor Run | 115 ft |
| Maximum Elevation Difference | 49 ft |
| Dimensions (W×D×H) | 37-1/4 × 16-1/8 × 31-7/8 in |
| Net Weight | 139 lb |
| Model | Capacity | Recommended Home Size | Occupants |
|---|---|---|---|
| MO4EX-H27B-2A | 27,000 BTU | Approximately 1,500–2,500 sq ft (depending on design load and indoor unit selection) | 3–5 occupants |
Multi-zone ODU Installation Manual
Step 1 Request your installation quote.
Step 2 Complete an in-home system sizing consultation.
Step 3 Receive equipment recommendations based on your home's heating and cooling requirements.
Step 4 Schedule your installation date.
Step 5 Removal of existing equipment (if applicable).
Step 6 Installation of the outdoor condenser, indoor units, refrigerant piping, electrical connections, and controls.
Step 7 Pressure testing, evacuation, refrigerant verification, and electrical safety inspection.
Step 8 Final commissioning, system testing, homeowner walkthrough, and operating instructions.
The Midea MO4EX-H27B-2A includes the manufacturer's limited parts warranty, subject to product registration and manufacturer terms.
4Most Energy also provides a labour warranty on qualifying professional installations for added peace of mind.
If a warranty issue arises, our team will assist with diagnosing the problem, coordinating any applicable manufacturer warranty claims, and completing eligible repairs.
Maintenance plans starting from $12.99/month help protect your investment and may include:
Ask a 4Most Energy representative about available maintenance plan options during installation.
