Review
The Mitsubishi 36,000 BTU quad zone mini split represents a practical solution for multi-room climate control without extensive ductwork. This wall-mounted system distributes 12,000 BTU capacity across four separate zones, allowing individual temperature management. The 23 SEER1 rating positions it among top-tier residential heat pump systems, offering contractors and homeowners substantial operating cost savings compared to standard 16 SEER equipment.
Performance specs reveal a well-balanced system for moderate climates. Cooling efficiency reaches 23 SEER1 with 15 EER, maintaining strong output even at 115-degree outdoor temperatures. Heating delivers 12.5 HSPF down to 5 degrees outdoor, though colder climates should pair this with auxiliary heat. The 3-ton tonnage with 109-399 CFM airflow handles variable load conditions effectively. Electrical requirements include 208/230v single-phase power with 30-40 amp breaker sizing, standard for residential installation.
Pros & Cons
Pros
- Exceptional 23 SEER1 cooling efficiency, well above industry average of 16-18 SEER1
- Strong 12.5 HSPF heating efficiency handles shoulder seasons effectively
- Quad zone configuration allows four separate temperature zones with individual wireless controllers
- 15 EER rating provides robust cooling performance at peak outdoor temperatures
- Single-phase 208/230v electrical simplifies installation on standard residential circuits
Cons
- Not ENERGY STAR certified despite high efficiency specifications
- Heating minimum outdoor temperature of 5 degrees limits performance in cold climates without backup heat
- Price listed as $0 prevents accurate value comparison against competing systems
- 5-year parts warranty is standard but shorter than some manufacturer programs offering 10 years
Who Should Buy
Best For
Homeowners in moderate climates (zones 5-9) who want to heat and cool multiple rooms independently without installing separate systems. Contractors handling new builds or renovations where wall-mounted units fit aesthetic preferences.
Consider Alternatives If
Anyone in harsh northern climates where outdoor temperatures regularly drop below 5 degrees, or those seeking ENERGY STAR certification for rebate programs.
Installation
Installation requires standard refrigerant line work with 1/4-inch liquid and 3/8-inch suction lines, plus 5/8-inch drain routing. The 18 by 38-inch by 3-inch indoor unit dimensions fit most wall spaces easily. Electrical work demands a dedicated 30-40 amp circuit at 208/230 volts. Wireless controller setup simplifies zone configuration. Professional installation is highly recommended for proper refrigerant charging and line insulation.
Warranty & Reliability
The 5-year parts warranty covers manufacturing defects on compressors, coils, and components. This baseline coverage matches many competitors but falls short of extended programs. Warranty does not include labor, refrigerant replacement, or damage from improper installation. Registering the system may extend coverage on select components. Review terms carefully before purchase.
Specifications
| SKU | 87762 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 12,000 BTU |
| Heating BTU | 14,400 BTU |
| Refrigerant | R410A |
| Electrical | 208/230v 1 Phase 60 Hz |
| BTU/Tonnage | 12,000 BTU/1 Ton |
| Mini Split Type | Wall Mounted |
| Zone Compatibility | Multi Zone |
| Warranty | 5 Years Parts Warranty |
| Decibel Level (dBA) | 19-45 |
| Weight (in lbs) | 5.000000 |
| Feature | Spec |
| Additional Information | Drain: 5/8" |
| Energy Star | No |
| HSPF | 12.5-11.2 |
| SEER1 (Efficiency) | 23 |
| EER | 15 |
| Liquid Line | 1/4" |
| Suction Line | 3/8" |
| Phase | Single Phase |
| Max Breaker Size | 40 |
| Min. Breaker Size | 30 |
| Tonnage | 3 Ton |
| Min/Max Outdoor Temp for Heating | 5°-65° |
| Min/Max Outdoor Temp for Cooling | 14°-115° |
| Operating Mode | Cooling, Heating |
| Height | 3" |
| Width | 18" |
| 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. |
| Controller | Wireless Included |
| Maximum CFM | 109-399 CFM |
| Capacity | Dehumidification Rate: 0.38 gal/hr |
| Length | 15' |
Frequently Asked Questions
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