CAHV Series

Mitsubishi Electric’s CAHV commercial series hot water heat pump can be the backbone of your commercial hot water production. Each CAHV packaged hot water heat pump can provide up to 45kW of water heating and up to 16 unit can be grouped together for a total capacity of 720kW. Its unique Zubadan inverter compressor technology ensures superior performance even in the harshest of conditions. The high water flow rate of CAHV makes it ideal for large comfort heating or commercial process applications, and it is capable of up to 70°C water outlet temperatures. All with the superior reliability and quietness associated with any Mitsubishi Electric machine.



70°C Hot Water at
-20°C ambient temperature

Note: Above capacity ratings are all nominal rated.

Built In Heat Exchanger

The Zubadan CAHV packaged hot water heat pump is designed to provide hot water up to 70°C with an ambient outdoor temperature as low as -10°C and a minimal drop-off down to -20°C, making it an ideal replacement for a boiler system or, better still, an uncompromising method of heating sanitary hot water for commercial applications. This unit utilizes the unique flash injection technology seen in the City Multi Zubadan air conditioning range.

Built In Heat Exchanger Hot Water Heat Pump CAHV-P500YA-HPB: Comes complete with an internal 316 stainless steel brazed plate heat exchanger. This allows for easy installation of connecting water pipes to where the hot water is required.

Zubadan Technology

Flash-injection Circuit

“Flash-injection Circuit”, which is designed for our ZUBADAN CITY MULTI (air conditioning system for cold regions), is mounted in our new Hot Water Heat Pump. By utilizing our advanced “Flash-injection Circuit” and the latest high-efficiency compressor, Hot Water Heat Pump provides hot water upto 70°C, and produces less capacity drop at low outdoor temperature.

Two-phase refrigerant is separated into liquid refrigerant and gas refrigerant at point A. Liquid refrigerant, whose pressure is reduced by LEV (Linear Expansion Valve), exchanges heat in the HIC circuit and become gas-liquid two-phase refrigerant. The two-phase refrigerant flows into the injection port of the compressor for controlling the increase of discharge temperature. Therefore the optimal amount of refrigerant can be provided to the system via the compressor, which makes it possible to provide hot water of 70°C.

Range of operation temperature and outlet water temperature. Delivering precise comfort even in the coldest days of the year down to -20°C.

During defrost operation, two compressors, which are equipped within one unit, run alternatively and result in smaller drop in outlet water temperature.

Other Features

Backup and Rotation Functions

Hot Water Heat Pump ensures an exceptionally high level of reliability by utilising “Backup Function*”. If either of the compressors malfunctions, the other compressor keeps operating to avoid a complete stop of the system. “Rotation Function” is also available. When two or more units are in the system, the unit runs alternatively to ensure an optimum product life cycle for both of its component units.

*If the main circuit board is at fault, backup function and rotation function are not available. Capacity drops by 50%.

Priority Modes

With “Capacity Priority Mode”, the hot water heat pump can provide a maximum capacity of over 70kW. “Capacity Priority Mode” is more effective when used with a boiler because fuel costs and CO2 emission from a boiler can be reduced.

Selection Guide

Use this guide to estimate your heating requirements, however units should not be purchased without advice from your heating or pool specialist. Every application is as individual as its owner. An incorrect selection may lead to unnecessary power consumption or a system with insufficient heating capability.

Underfloor Heating.

The amount of heat required will vary depending on location and the construction of your home. Therefore, every house requires a different calculation to heat the desired area. The maps to the right are designed as a guide. First, calculate the floor area of the house requiring heating to be installed. Remember to deduct areas under cupboards, garages etc. Take the area (m2) and multiply it by the factor in your region on the appropriate map. Your underfloor heating specialist will be able to give you a more accurate assessment of your heating requirements.

CAHV Series