WATER TANK ASSEMBLY AND GAS WATER HEATER

HEAT EXCHANGER AND WATER HEATER

Flue pipe systems and methods of purifying flue gases

Condensate trap for gas furnace

Heat-exchange pipe, heat-exchanger unit using same, and condensing boiler using same

Heat source device

Condensing boiler employing evaporation device

CONDENSING BOILER

Domestic gas-fired water heater condensing flue system

Hot water supply apparatus

FIRE TUBE CONDENSING BOILER FOR GENERATING HOT WATER

Method for preventing coagulation in exhaust pipe of boiler

WATER HEATING APPARATUS, ESPECIALLY FOR POOLS

Integrated dual chamber burner

Storage type boiler heating exchanging structure for preventing condensation

Condensing water heater

Dual pipe heat exchanger of boiler for house heating and hot water

Immerse resistant rust inhibiting water heater support with or without leveling capabilities

Method for maximum efficiency of non-condensing boiler

Heat exchange apparatus, particularly fire tube condensing boiler

Return temperature stabilizer assembly

Hot-water supply system having dual pipe

Hot-water supply system having supplementary heat exchanger

Apparatus and process for detecting condensation in a heat exchanger