158646 ⎘
Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes
Sub-classes:Gas Furnace with Heat Exchanger
#2Heat Exchanger
#3AIR HANDLING UNIT
#4FURNACE
#5Gas furnace with heat exchanger
#6Air handling unit
#7BLOCK HEATER AND BLOCK HEATER ASSEMBLY
#8GAS ANALYZER
#9Systems and methods for using a smart valve to control conditioned air
#10Furnace
#11Systems and methods for fault detection using smart valves
#12Flameless heating system
#13Storage type electric water heater with hot air generating function
#14COMPACT AIR HANDLER WITH MULTIPLE FANS
#15Systems and methods for using a smart valve to control conditioned air
#16Heat Exchanger Elevated Temperature Protection Sleeve
#17Fluid fuel heater to heat air and a method for operating said heater
#18FLAMELESS HEATING SYSTEM
#19Enhanced Tubular Heat Exchanger
#20Furnace
#21HEATING AND COOLING SYSTEM FOR HAZARDOUS ENVIRONMENTS
#22FLAMELESS HEATING SYSTEM
#23Heater for indoor warming using waste heat of exhaust gas
#24Fluid fuel heater to heat air and a method for operating said heater
#25Furnace combustion system and method
#26Germicidal heating apparatus using superheated vapor
#27Systems and methods for fault detection using smart valves
#28Air handler unit including a smart valve
#29Compact air handler with multiple fans
#30Furnace header
#31Flameless heating system
#32Furnace premix burner
#33BURNER SYSTEM FOR A FURNACE
#34Indoor Space Heating Apparatus
#35Non-electric forced air heating and cooling apparatus
#36Used oil furnace with vertical flue tubes