Mitsubishi Hyper-Heat and Heat Pump Water Heater Upgrade in Berkeley
Completed September 26, 2026
Mitsubishi Hyper-Heat system and 65-gallon heat pump water heater installed as part of a home comfort upgrade in Berkeley.
Home comfort upgrade in Berkeley featuring a Mitsubishi Electric 42,000 BTU multi-zone Hyper-Heat system serving two ducted air handlers, along with a 65-gallon ProTerra heat pump water heater. The project provided efficient electric heating and cooling across multiple areas of the home while also upgrading the domestic hot water system.
Project details
Customer problem
The homeowner had recently purchased the property, which had two existing furnaces, and wanted to upgrade the home's heating and cooling while also adding a heat pump water heater.
Recommendation and why
A Mitsubishi Hyper-Heat multi-zone system with two ducted air handlers was selected to replace the existing furnace-based heating arrangement while providing efficient inverter-driven heating and cooling. A ProTerra 65-gallon heat pump water heater was also selected to improve domestic hot water efficiency.
Installation challenges and work performed
Installed the Mitsubishi outdoor heat pump on an elevated equipment base and connected two ducted air handlers serving separate areas of the home. Completed the required refrigerant, electrical, drainage, and duct connections, and added a protective bollard near the outdoor unit. The project also included installation of a 65-gallon heat pump water heater with expansion tank, shutoff valve, earthquake straps, drain pan, electrical switch, and removal of the old water heater.
Equipment details
Mitsubishi Electric MXZ-SM42NLHZ M-Series Hyper-Heat outdoor unit, 42,000 BTU/h nominal capacity, inverter-driven variable capacity, approximately 53 dB(A).
Mitsubishi SVZ-AP12NL ducted air handler, 208/230V, approximately 278-448 CFM.
Mitsubishi SVZ-AP18NL ducted air handler, 208/230V, approximately 471-675 CFM.
Rheem ProTerra PROPH65 T0 RH120-M 65-gallon 120V heat pump water heater with up to 3.46 UEF.
Observed result
Completed a multi-zone all-electric HVAC and water-heating upgrade, with one Mitsubishi Hyper-Heat outdoor unit serving two ducted air handlers and a new heat pump water heater supplying domestic hot water.