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QAHV — 40kW CO₂ Heat Pump for Commercial Potable Water Heating

The 40kW QAHV is a monobloc all in one heat pump (water and electric connections only) for the production of potable hot water, providing a low carbon alternative to gas boiler or direct electric systems in commercial facilities.

With the ability to reach temperatures of up to 90°C, the QAHV paired with a storage cylinder can provide reliable hot water for most commercial applications where hot water demand is high, such as gyms, hotels, motels, aged care facilities and hospitals as well as industrial processing facilities.

The QAHV utilises R744 (CO2) as its refrigerant, achieving high COPs at the lowest possible Global Warming Potential (GWP) for refrigerants of just 1. This makes it the best choice for clients with sustainability goals for their building.

Better Security of Hot Water Supply and More Lettable Space — As a single pass high temperature lift machine, QAHV works best with a high water temperature difference and delivers 17 l/min or more of full temperature usable hot water in real time. This directly reduces the amount of storage required to meet the peak demands, and gives quicker recovery.


Key Features
  • Utilises natural CO2 refrigerant with Global Warming Potential of 1 and zero Ozone Depletion Potential
  • Lowest operational carbon footprint for hot water production
  • High efficiency (approx. 388%)*
  • Supplies hot water of up to 90°C
  • Operates at outdoor temperatures down to -25°C
  • Compact dimensions, minimising plant space
  • Single pass water heating, reducing storage & recovery time
  • Unique twisted and spiral heat exchanger to enhance efficiency and reduce maintenance
  • Connect up to 16 units to provide capacity range from 40kW to 640kW
  • Full documentation available including specifications and CAD drawings available upon request

*Under normal heating conditions at outdoor temp: 16°CDB/12°CWB, inlet water temp 17°C, outlet water temp 65°C and the inlet water temperature 17°C

Scope of Use
  • The QAHV is designed to provide potable hot water for high use applications
  • With 40kW of heating capacity, the QAHV can be paired with a storage cylinder and provide high temperature hot water for gyms, aged care facilities, health care, apartments and other high use buildings or facilities
  • The QAHV is able to provide its full heating capacity of 40kW even at ambient temperatures as low as -3°C
Limitations on Use
  • As the QAHV has been designed for potable hot water applications, it is not suitable for space heating applications.
  • Please refer to the Mitsubishi Electric CAHV Hot Water Heat Pump for applications requiring hydronic space heating or contact Mitsubishi Electric for more solutions
Statement of Building Code Compliance
  • Complies with NZ Building Code section G12 (Water Supplies)
In-Service History

Operating in New Zealand since 2018, the QAHV is tried and tested in New Zealand conditions in university facilities, hospitals, hotels and offices.

Other Performance Attributes
  • Assists in meeting decarbonisation targets of commercial buildings
  • Helps to achieve Green Star points (when considering Total System Weighted Direct Environmental Impact) or improved Nabers ratings
  • Provides full heating capacity of 40kW even at outdoor temperatures as low as -3°C
  • Uses CO2 (R744) as it is an environmentally-friendly, natural refrigerant which has zero Ozone Depletion Potential (ODP) and has a Global Warming Potential (GWP) of 1


Mitsubishi Electric offer 12 months warranty as standard with the option to extend to up to 5 years.

G12 Water Supplies compliant
Water Supplies
QAHV Hot Water Heat Pump Product Information Sheet
Installation Space Requirements: QAHV
QAHV Hot Water Heat Pump Brochure
TM65ANZ Mid Level Calculation Embodied Carbon - QAHV Hot Water Heat Pump

Mitsubishi Electric are leaders in providing energy efficient heating, cooling, ventilation and hot water heat pump solutions for both commercial buildings and residential homes.

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