John Wood Water Heater

John Wood
JWT 540H DV Tankless Water Heater

John Wood® powered by Takagi offers a wide selection of tankless products to suit the varying needs of today’s households.A full product line of state-of-the-art tankless water heaters, including condensing models that are ENERGY STAR® qualified with energy factors up to 0.95 are available.


Product Features

- Condensing technology

- Unprecedented 0.95 Energy Factor

- Durable Heat Exchanger: Uses HRS35 copper for primary heat exchanger and stainless steel #316L for secondary heat exchanger

- Approved with ULC S636 PVC, CPVC or polypropylene venting in addition to Cat. III/IV stainless steel

- Vent with 3” (up to 70 feet) or 4” (up to 100 feet)

- 0”clearance to combustibles

- Integrated control and diagnostics

- Air Fuel Ratio (AFR) Sensor

- Factory-installed power cord

- Internal freeze-protection system (JWT-540H-DV has dual protection)

- High altitude installation (up to 10,100 ft.)

Energy Savings

- ENERGY STAR® qualified

- Fully modulating

- Electronic ignition means no standing pilot

Designed for Performance

- ENERGY STAR® qualified

- Factory-installed power cord

- Many models feature improved scale reduction software

- Secondary heat exchangers feature 316L high-quality, long-lasting stainless steel in condensing models

- High altitude installations (up to 10,100 ft)

Safety Features - Air-Fuel Ratio Sensor to ensure safe and optimal operation

- Exhaust** & water temperature safety devices

- Overheat cut-off fuse

- Freeze protection

Serviceability - Easy diagnostics and troubleshooting

- Condensing models feature built-in numerical digital display

- Non-condensing models include temperature remote controller with numerical digital display

Venting Flexibility

- Condensing models can be vented using ULC S636 PVC, CPVC, polypropylene pipe or Cat. III/IV stainless steel