The Mitsubishi ERSF-NM6E Hydrobox is a wall-mounted indoor unit designed for Ecodan air-to-water heat pump systems. It houses the heat exchanger and advanced controls that manage water temperature for efficient hydronic heating and cooling. Ideal for radiant floor systems, fan coils, and boiler replacement applications, it delivers reliable, energy-efficient all-electric comfort.

Gas Pipe Size: 5/8"
Liquid Pipe Size: 1/4"
Touch Screen Controller: Built In
All-in-one Hydrobox: Designed with front-access serviceability, the All-in-one Hydrobox includes the pumps, expansion vessel, magnetic filter, booster
heater, and plate heat exchanger.
Requires a WUZ Heat Pump

Mitsubishi ERSF-NM6E Hydrobox
Booster Heater Included
Expansion Vessel Included

• Automatic Air Vent: As air builds up in a hydronic system over time, that excess air pressures is automatically purged to maintain optimal performance.
• Flow Sensor: The flow sensor maintains water pressure by monitoring the water flow rate and automatically adjusting the inverter output for maximum
efficiency.
• Flow Temperature Controller: Control board with multiple inputs/outputs to control 3rd party components
• Magnetic Filter: The magnetic filter catches large debris, sediment, and iron particles before they can impact the plate heat exchanger, pump, or other
piping, supporting system longevity and easier maintenance.
• Touch Screen Controller: The Hydrobox comes with a touch screen controller on the front panel
• All-in-one Hydrobox: Designed with front-access serviceability, the All-in-one Hydrobox includes the pumps, expansion vessel, magnetic filter, booster
heater, and plate heat exchanger.

SPL (Sound Pressure Level): 34
PWL (Sound Power Level): 48
Unit Dimensions (W x D x H): 20-55/64" x 14-11/64" x 31-1/2"
Unit Weight: 93 lbs
Unit Weight (Water full): 106 lbs
Hydrobox water circuit volume: 1.3 gal
Booster Heater Equipped: Yes
Water Flow Rate [Minimum / Maximum]: 1.90 / 6 GPM
Expansion Vessel Equipped: Yes
Flow Temp Heating Set Point Range [Minimum / Maximum]: 68F / 158F
Flow Temp Cooling Set Point Range [Minimum / Maximum]: 41 / 77
Guaranteed Ambient Temp DB [Minimum / Maximum]: 32/95