Boiler heat exchanger unit
Coal-fired heating apparatus and method
Compact high efficiency gas fired steam generator-humidifier
Compact ultra high efficiency gas fired steam generator
Continuous-flow steam generator
Downdraft boiler with turbulators
Finned tube heat exchanger and method
Finned tube water heater
Firetube heat exchanger with corrugated internal fins
Fluid heat generator, with selective control of the flow
Gas quick water heater
Heat exchanger
Multistep water heater having a device for increasing combustion
Quiet, non-condensing liquid heater using a non-mixing blower co
Vaporizer for liquefied natural gas
Water boiler with metal core
Water boiler with metal core
Water heater and method of operating the same
Water-tube boiler and burner