Review
The Mitsubishi 42,000 BTU Quad Zone Mini Split H2i represents a premium positioning in the residential heat pump market. This wall-mounted system targets contractors and homeowners seeking granular climate control across multiple rooms without requiring separate outdoor units. The quad-zone architecture distributes capacity as 6+6+12+12 BTU across four independent zones, making it suitable for ranch homes, open-concept layouts, or properties where bedroom-to-kitchen temperature preferences diverge significantly.
Performance metrics confirm why this system commands contractor attention. The SEER2 efficiency rating of 21.5 translates to approximately 25 percent better cooling efficiency than ten-year-old equipment, measurably reducing summer cooling costs. Heating output reaches 32,000 BTU with Hyper Heat technology active, sustaining operation in freezing conditions where conventional heat pumps struggle. The 13.4 EER rating ensures strong peak cooling performance, while 109 to 399 CFM airflow flexibility accommodates varied room sizes without excessive noise ranging from 19 to 45 decibels.
Pros & Cons
Pros
- Exceptional SEER2 rating of 21.5 delivers measurable energy savings on residential utility bills
- Hyper Heat technology maintains heating output at 32,000 BTU in sub-zero climates, critical for northern installations
- Quad-zone configuration (6+6+12+12) lets contractors serve four separate rooms from one outdoor unit
- EER rating of 13.4 provides strong peak cooling performance during hot summer months
- Wireless controller included, eliminating additional equipment costs for homeowners
Cons
- Price listed as $0, indicating incomplete product data or marketplace error requiring vendor contact
- Amperage requirement of 50A exceeds typical residential panel capacity, requiring professional electrical upgrades
- Only 5-year parts warranty is standard industry coverage, shorter than premium competitors offering 10 years
Who Should Buy
Best For
Contractors installing systems in homes spanning multiple climate zones or requiring zone-specific comfort control should consider this unit. Homeowners in cold regions benefit from the Hyper Heat feature, which maintains performance when competitors shut down.
Consider Alternatives If
Budget-conscious buyers should explore single-zone alternatives, as quad-zone systems demand higher installation labor. Properties with severely limited electrical service should avoid this model until infrastructure upgrades are completed.
Installation
Installation demands single-phase 230V power with a dedicated 40 to 45 amp breaker, though actual amperage draws 50A under full load. Contractors should verify existing electrical service before quoting. The 3/8 inch liquid line and 5/8 inch suction line accept standard refrigerant fittings. Included wireless controller eliminates thermostat wiring complexity. Wall-mounted indoor units require careful height planning, though 38-inch depth keeps units relatively compact.
Warranty & Reliability
The 5-year parts warranty covers defects in materials and workmanship, standard across most residential Mitsubishi equipment. This protects against compressor failure and component malfunction but excludes labor costs and refrigerant charges. Homeowners should budget separately for service calls if issues arise after year one, when labor becomes the primary expense.
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 | HW-600 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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