158600 ⎘
Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters; Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water chamber arranged adjacent to the combustion chamber or chambers, e.g. above or at side
Sub-classes:TEMPERATURE CONTROL DEVICE FOR FLUIDS
#2Heat source device
#3Heat exchange device and heat source machine
#4Tubular heat exchanger
#5Heat exchanger
#6Heat exchanger
#7Condensing combustion apparatus
#8Heat exchanger
#9Heat exchanger
#10Round plate heat exchanger
#11Heat exchanger
#12Heat exchanger
#13Heat exchanger
#14Heat exchanger
#15Heat exchanger
#16Heat exchanger
#17Heat exchanger
#18Boiler system
#19Heat source apparatus
#20Coil tube heat exchanger for a tankless hot water system
#21Coil tube heat exchanger for a tankless hot water system
#22Coil tube heat exchanger for a tankless hot water system
#23High efficiency wood or biomass boiler
#24Heating system
#25Method and apparatus for providing a transition connector to introduce outside air and vent flue for boiler combustion
#26Fluid heating apparatus utilizing at least two fluid paths