Advanced heater

Arrangement for securing and sealing a coil assembly to a boiler

Boiler having improved heat absorption

Boiler or vapor generator using catalytic combustion of hydrocar

Cyclone after-burner for cyclone reburn NO.sub.x reduction

Fired heater

Heat exchanger

Heat exchanger for pressure washer

Heat exchanger plug

Heat transfer fluid heater with continuously flushed vent and dr

Heater

Heater for heating a fluid

Heating apparatus and method for operation thereof

High efficiency commercial water heater

Method and apparatus for heating liquid

Method and apparatus for low NOX combustion of gaseous fuels

Multi-pass helical coil thermal fluid heater

Tubular furnace and method of controlling combustion thereof

Water heater

Water heating apparatus