Review
The Mitsubishi 42,000 BTU Quad Zone H2i Hyper Heat Pump represents a premium entry into multi-zone residential HVAC. This wall-mounted system delivers sophisticated climate control across four independent zones while maintaining the efficiency standards today's contractors and homeowners demand. The H2i designation signifies Hyper Heat technology, Mitsubishi's proprietary approach to maintaining heating output in extreme cold. At this price point and efficiency level, it competes directly with Daikin and Fujitsu offerings in the high-efficiency market segment.
Performance metrics tell the story here. The system achieves a SEER2 rating of 21.5, placing it in the top tier for cooling efficiency and translating to measurable energy savings. Heating output reaches 32,000 BTU, sufficient for moderate climate zones or as a primary system in well-insulated homes. The EER of 13.4 indicates strong cooling performance under peak load conditions. Operating noise ranges from 19 to 45 dBA depending on mode and fan speed, with lower levels during heating cycles and higher output during summer cooling demands.
Pros & Cons
Pros
- SEER2 rating of 21.5 delivers exceptional cooling efficiency and lower utility bills year-round
- 32,000 BTU heating capacity with Hyper Heat maintains performance in sub-zero temperatures
- Quad zone configuration (9+9+12+12 tons) lets you control temperature independently in four rooms
- EER of 13.4 provides solid cooling performance even during peak summer demand
- Wireless controller included, eliminating additional installation and equipment costs
- Single phase 230V electrical requirement simplifies residential wiring
Cons
- 42,000 BTU cooling capacity limits this system to homes under 2,000 square feet or smaller multi-zone setups
- Requires 40-45 amp breaker and 50 amp service, demanding dedicated electrical upgrades on older panels
- 5-year parts warranty is industry standard but shorter than some competing brands offering 10-year coverage
Who Should Buy
Best For
This system fits contractors installing efficient climate control in new construction or retrofit projects with four distinct zones. It's also ideal for homeowners in cold climates who want reliable heating without supplemental resistance elements.
Consider Alternatives If
Skip this if you need cooling capacity exceeding 42,000 BTU, have a small single-zone space, or lack the electrical service capacity for a 40-45 amp dedicated breaker.
Installation
Installation requires 230V, 1-phase, 60Hz electrical service with a dedicated 40-45 amp breaker. Refrigerant lines use 3/8-inch liquid and 5/8-inch suction sizing. The condensate drain requires a 5/8-inch line with 0.38 gallons per hour dehumidification capacity. Total system length spans 15 feet from outdoor to indoor units. Mitsubishi supplies the wireless controller, eliminating that additional cost and simplifying setup for contractors.
Warranty & Reliability
The 5-year parts warranty covers compressor, compressor motor, and sealed refrigeration components. This standard coverage matches most major brands but runs shorter than extended programs available from some competitors. Registration with Mitsubishi typically extends coverage, so verify your specific terms upon purchase.
Specifications
| SKU | 201813 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 42,000 |
| Heating BTU | 32,000 |
| Refrigerant | R410A |
| Electrical | 230 V. 1 Phase 60 Hz |
| BTU/Tonnage | 42,000 BTU/3.5 Ton |
| Mini Split Type | Wall Mounted |
| Zone Compatibility | Multi Zone |
| Warranty | 5 Years Parts Warranty |
| Decibel Level (dBA) | 19-45 |
| Weight (in lbs) | 15.000000 |
| Feature | Spec |
| Controller | Wireless Included |
| Additional Information | Drain: 5/8" |
| Maximum CFM | 109-399 CFM |
| Capacity | Dehumidification Rate: 0.38 gal/hr |
| Liquid Line | 3/8" |
| Suction Line | 5/8" |
| Operating Mode | Cooling, Heating |
| Height | 1/2" |
| Width | 1/2" |
| Depth | 38" |
| Resources | Surge Protector Install Guide 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-5C42NAHZ2 |
| Product Features | Hyper Heat |
| SEER2 (Efficiency) | 21.5 |
| EER | 13.4 |
| Max Breaker Size | 45 amps |
| Min. Breaker Size | 40 |
| Amperage Requirement | 50 |
| Length | 15' |
Frequently Asked Questions
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