Review
The Mitsubishi 36,000 BTU quad-zone H2i Hyper Heat system represents a solid entry into premium mini-split territory. This wall-mounted configuration handles four separate zones with individual temperature control, making it popular with contractors who need flexible installations for multi-room applications. The Hyper Heat badge signals performance in cold climates, a critical feature often missing from standard heat pumps. At 3 tons of cooling capacity and single-phase 230V operation, it fits within typical residential electrical infrastructure.
Performance numbers are genuinely impressive across the board. The SEER2 rating of 23 indicates approximately 19% better efficiency than the legacy 19.1 SEER metric, while the 11 HSPF heating rating handles winter demand effectively. Cooling output reaches 36,000 BTU with adjustable CFM between 191 and 504, while heating delivers 33,000 BTU across a 191 to 437 CFM range. The 49 dBA noise level keeps operation quiet enough for occupied spaces, and the 15 EER rating reflects solid part-load efficiency under typical cooling conditions.
Pros & Cons
Pros
- Outstanding SEER2 rating of 23 delivers 19% better efficiency than standard 19.1 SEER systems
- Strong heating performance with 11 HSPF and 33,000 BTU heating capacity for cold climates
- Hyper Heat technology maintains output at lower outdoor temperatures where typical heat pumps struggle
- Quiet operation at 49 dBA, making it suitable for bedrooms and occupied spaces
- Wireless controller included with multi-zone compatibility for flexible room-by-room management
- Single-phase 230V electrical requirement simplifies installation on standard residential circuits
Cons
- Price listed as $0 makes real value comparison impossible for budget-conscious buyers
- 5-year parts warranty is shorter than some competitors offering 7-10 year coverage
- Amperage requirement of 50 amps exceeds the 40-45 amp breaker range, requiring professional electrical assessment
Who Should Buy
Best For
Contractors installing multi-zone systems in homes across northern and mixed climates will appreciate the 11 HSPF heating efficiency and Hyper Heat capability. Homeowners wanting room-by-room temperature control without running separate systems benefit from the quad-zone flexibility and SEER2 23 cooling efficiency.
Consider Alternatives If
Anyone with a constrained electrical panel or homes already at maximum amperage capacity should consult an electrician before purchasing, as the 50-amp requirement is substantial.
Installation
Installation requires standard mini-split preparation, including 5/8 inch drain line, 3/8 inch liquid line, and 5/8 inch suction line connections. The unit weighs 30 pounds and measures 38 inches deep, 30 feet in length, with minimal height and width dimensions suggesting compact wall mounting. A 40 to 45 amp breaker is listed, though the 50 amp amperage requirement suggests close coordination with your electrician to confirm proper sizing before installation begins.
Warranty & Reliability
The 5-year parts warranty covers component failures under normal use but excludes labor and refrigerant charges. This protection period is reasonable for mid-tier equipment but trails some competitors offering 7 to 10 year coverage. Registration typically required to activate full warranty benefits, so keep documentation and proof of installation readily available.
Specifications
| SKU | 216740 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 36,000 |
| Heating BTU | 33,000 |
| Refrigerant | R410A |
| Electrical | 230 V. 1 Phase 60 Hz |
| BTU/Tonnage | 36,000 BTU/3 Ton |
| Mini Split Type | Wall Mounted |
| Zone Compatibility | Multi Zone |
| Warranty | 5 Years Parts Warranty |
| Decibel Level (dBA) | 49 |
| Weight (in lbs) | 30.000000 |
| Feature | Spec |
| Controller | Wireless Included |
| Additional Information | Drain: 5/8" |
| Maximum CFM | C: 191-504 & H: 191-437 |
| Capacity | Dehumidification Rate: 0.41 gal/hr |
| Liquid Line | 3/8" |
| Suction Line | 5/8" |
| Operating Mode | Cooling, Heating |
| Height | 1/2" |
| Width | 1/2" |
| Depth | 38" |
| Resources | MHK2 Installation Manual MHK2 Submittal MHK2 FAQs You will need Adobe® Acrobat® Reader to view PDF documents. |
| Safety Information | PROPOSITION 65 WARNING This product and many products on our site may contain a chemical know to the state of California to cause cancer or birth defects or other reproductive harm. For more information about Proposition 65 please Click Here. |
| Phase | Single Phase |
| Replaces | MXZ-SM36NAMHZ |
| Product Features | Hyper Heat |
| HSPF | 11 |
| SEER2 (Efficiency) | 23 |
| EER | 15 |
| Max Breaker Size | 45 amps |
| Min. Breaker Size | 40 amps |
| Amperage Requirement | 50 |
| Length | 30' |
Frequently Asked Questions
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