36,000 BTU 19.1 SEER Mitsubishi Quad Zone H2i Hyper Heat Pump System 6+6+6+18 - Wall Mounted Review 2026

// Bottom Line

This Mitsubishi quad zone system is built for contractors managing multi-room residential installations where efficiency and zone control matter. The 23 SEER2 rating and 11 HSPF make it genuinely competitive for homes in mixed climates that need both strong cooling and reliable heating.

Review

The Mitsubishi 36,000 BTU H2i Hyper Heat system targets contractors and homeowners serious about multi-zone climate control. This quad zone configuration splits capacity as 6+6+6+18 BTU across four separate spaces, giving precise room-by-room management. At $490.43 for the outdoor unit, pricing sits competitively within the high-efficiency mini split segment where zone flexibility commands premium value.

Performance metrics justify the efficiency focus. The system delivers 23 SEER2 cooling efficiency and an 11 HSPF heating coefficient, making it credible for both summer cooling loads and winter heat pump operation. Cooling capacity reaches 36,000 BTU with 33,000 BTU heating output. The 15 EER rating and dehumidification rate of 0.32 gallons per hour address humidity concerns in transitional seasons. Airflow ranges from 194 to 514 CFM, providing flexibility to match room volumes.

Pros & Cons

Pros

23 SEER2 efficiency rating places it in the top tier for cooling season performance
11 HSPF heating coefficient handles cold climates better than many competitors in this price range
Quad zone capability with 6+6+6+18 split lets you control four separate rooms independently
Wireless controller included, eliminating additional purchase and installation labor
49 dB noise level runs quieter than most wall-mounted units at standard operating capacity
5-year parts warranty covers material defects across the entire system

Cons

Dimensional specs appear incomplete or problematic, with height and width listed as 0.5 inches each
50-amp amperage requirement demands dedicated 40-45 amp breaker, adding electrical work cost
R410A refrigerant is being phased out, potentially complicating future service or recharges

Who Should Buy

Best For

Contractors outfitting multi-zone residential homes where independent temperature control for four separate spaces is non-negotiable. Homeowners in moderate to cold climates who need both aggressive cooling and reliable winter heating without sacrificing efficiency ratings.

Consider Alternatives If

Anyone with undersized electrical service or who cannot dedicate a 40-amp breaker should explore alternatives. Properties requiring only single-zone coverage don't need the quad zone complexity or associated cost.

36,000 BTU 19.1 SEER Mitsubishi Quad Zone H2i Hype

$490.43

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Installation

Installation demands 230V single-phase 60Hz service with 40 to 45 amp breaker capacity. The 5/8 inch suction line and 3/8 inch liquid line use standard fittings. Refrigerant charge and line set assembly require EPA-certified technician involvement. Length specification of 15 feet allows reasonable outdoor unit placement. Wireless controller ships included, eliminating remote purchase delays.

Warranty & Reliability

The 5-year parts warranty covers component failures and manufacturing defects. This timeline is standard for Mitsubishi equipment and protects against compressor, valve, and circuit board failures during the critical early ownership period. Labor costs fall to the installer or homeowner.

Specifications

SKU	201813
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)	15.000000
Feature	Spec
Controller	Wireless Included
Additional Information	Drain: 5/8"
Maximum CFM	194-514 CFM
Capacity	Dehumidification Rate: 0.32 gal/hr
Liquid Line	3/8"
Suction Line	5/8"
Phase	Single Phase
Operating Mode	Cooling, Heating
Height	1/2"
Width	1/2"
Depth	38"
Resources	MHK2 Installation Manual MHK2 Submittal MHK2 FAQs You will need AdobeÂ® AcrobatÂ® 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.
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	15'

Frequently Asked Questions

Can I use this system for just one or two zones instead of four? +

Yes. The 6+6+6+18 configuration is fixed at the factory, but you can operate fewer zones actively. Close dampers or disable zones you don't need. However, you're paying for full four-zone capacity even if using two zones, so evaluate single-zone alternatives if multi-zone control isn't essential.

What electrical work is required before installation? +

A dedicated 40 to 45 amp circuit breaker is mandatory. Your home's electrical panel must support this load. If upgrading service or running new circuits is needed, budget $800 to $2,000 for electrician labor. This must be completed before the HVAC technician arrives.

How does the 11 HSPF heating rating perform in cold climates? +

An 11 HSPF is solid for moderate winters and acceptable down to 0 degrees Fahrenheit. Homes in Minnesota, Wisconsin, or New England may still need supplemental resistance heating below negative temperatures. Check your local climate data and discuss backup heat requirements with your installer.

How does this compare to single-zone Mitsubishi units at similar price points? +

Single-zone competitors often match the 23 SEER2 and 11 HSPF efficiency but cost $50 to $100 less. You pay premium dollars here for zone control, wireless remote inclusion, and quad capacity. Single-zone makes sense only if you're conditioning one room or need multi-unit installs anyway.

Does the 5-year warranty include labor costs? +

No. The warranty covers parts only. Technician labor, refrigerant recharge, and diagnostics are your responsibility after year one. Most contractors charge $150 to $300 per service call for non-warranty issues.

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