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Category: Hot Water Heaters > Manufacturer: Monitor


Product Information

The MWH180 tankless gas water heater is 82% or more efficient. On demand tankless gas water heaters provide a continuous supply of hot water at published flow rates with a preset temperature of 120°F; only heating water needed, cutting water heating costs up to 50%. The compact design of the MWH180 tankless water heater allows for indoor installation virtually anywhere.

The MWH180 has a maximum water capacity of 5.8 gallons per minute at a 54°F temperature rise which allows you to use hot water at up to three plumbing fixtures simultaneously. A remote control is included. An additional remote control for enhanced performance is available.


Built-in signal notifies the microprocessor to start the burner operation when the faucet is open and to stop when closed

Energy efficient electronic ignition system grants significant savings in energy and money

Advanced control system uses a sensor to maintain a constant outgoing water temperature

For added safety the microprocessor limits the maximum temperature of the hot water to 120°F when not using the remote control

Service codes are displayed on a remote control specifying diagnostics during maintenance calls

Designed to prevent varying temperature of hot water when the faucet is cycled on and off, quick response mode for rapid heating

10 year warranty for the heat exchanger and one year reasonable labor

Technical Specifications
Dimensions Height 24 1/32 “
Width 13 25/32?
Depth 8 3/4 “
Weight 43 lbs.
Maximum gas input rate 180,000 BTU/h
Minimum gas input rate 20,000 BTU/h
Hot water capacity range 0.58 – 5.8 GPM
Maximum hot water capacity (54°F rise) 5.8 GPM
Temperature range (with remote) 96°F – 140°F
Maximum water supply pressure 150 psi
Minimum water supply pressure 15 psi
Noise level 49 dB
Connections Gas 3/4? MNPT
Water inlet 3/4? MNPT
Hot water outlet 3/4? MNPT
Electric consumption Normal 61 W
Standby 3.7 W
Anti-frost operation 84 W
Included accessory Remote controller

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