Adjustable mount for a gas control valve of a water heater

Air inlets for water heaters

Apparatus and method for delivering water into a water heater

Apparatus and methods for controlling a water heater

Atmospheric gas boiler

Boiler apparatus

Cold water inlet for reducing accumulation of scale

Combustion air inlet diverter plate for a water heater

Condensate trap for condensing gas boiler

Condensing boiler

Control system for a water heater

Cycle control system for boiler and associated burner

Cylindrical boiler

Ducted secondary air fuel-fired water heater LDO detection

Energy converter using imploding plasma vortex heating

Energy sustaining water heater

Explosion proof gas-fired water heater

Explosion-proof hot water heater with unsealed fuel...

Flame atmosphere analyzer and a water-heating device...

Flammable vapor resistant water heater