Heat Source
Coal
Coal,electric
Coal,electric,natural Gas
Coal,electric,natural Gas,wood
Coal,electric,oil
Coal,electric,oil,solar,wood
Coal,electric,oil,wood
Coal,electric,pellet
Coal,electric,wood
Coal,geothermal
Coal,natural Gas
Coal,natural Gas,oil
Coal,natural Gas,oil,wood
Coal,natural Gas,wood
Coal,oil
Coal,oil,pellet,wood
Coal,oil,wood
Coal,pellet
Coal,propane Gas
Coal,wood
Electric
Electric,coal
Electric,coal,natural Gas
Electric,coal,oil,wood
Electric,coal,propane Gas
Electric,coal,wood
Electric,geothermal
Electric,geothermal,natural Gas
Electric,geothermal,natural Gas,solar
Electric,geothermal,oil
Electric,geothermal,wood
Electric,kerosene
Electric,kerosene,oil
Electric,kerosene,pellet
Electric,kerosene,wood
Electric,natural Gas
Electric,natural Gas,coal
Electric,natural Gas,geothermal
Electric,natural Gas,none
Electric,natural Gas,oil
Electric,natural Gas,oil,propane Gas
Electric,natural Gas,oil,solar,passive Solar
Electric,natural Gas,oil,wood
Electric,natural Gas,passive Solar
Electric,natural Gas,passive Solar,wood
Electric,natural Gas,pellet
Electric,natural Gas,pellet,wood
Electric,natural Gas,propane Gas
Electric,natural Gas,solar
Electric,natural Gas,solar,wood
Electric,natural Gas,wood
Electric,natural Gas,wood,geothermal
Electric,natural Gas,wood,passive Solar
Electric,none
Electric,oil
Electric,oil,coal
Electric,oil,geothermal
Electric,oil,natural Gas
Electric,oil,passive Solar
Electric,oil,pellet
Electric,oil,pellet,wood
Electric,oil,propane Gas
Electric,oil,solar
Electric,oil,solar,wood
Electric,oil,wood
Electric,oil,wood,coal
Electric,oil,wood,natural Gas
Electric,passive Solar
Electric,passive Solar,coal
Electric,passive Solar,natural Gas
Electric,passive Solar,natural Gas,wood
Electric,passive Solar,wood
Electric,pellet
Electric,pellet,wood
Electric,propane Gas
Electric,propane Gas,oil
Electric,propane Gas,solar
Electric,propane Gas,wood
Electric,solar
Electric,solar Panel
Electric,solar,coal
Electric,solar,geothermal
Electric,solar,oil
Electric,solar,passive Solar
Electric,solar,wood
Electric,solar,wood,coal
Electric,unknown
Electric,wood
Electric,wood,coal
Electric,wood,coal,natural Gas
Electric,wood,geothermal
Electric,wood,kerosene
Electric,wood,natural Gas
Electric,wood,natural Gas,solar
Electric,wood,oil
Electric,wood,passive Solar
Electric,wood,pellet
Electric,wood,propane Gas
Electric,wood,solar
Geothermal
Geothermal,electric
Geothermal,electric,natural Gas
Geothermal,electric,propane Gas
Geothermal,electric,solar
Geothermal,electric,wood
Geothermal,natural Gas
Geothermal,natural Gas,solar
Geothermal,natural Gas,wood
Geothermal,none
Geothermal,oil
Geothermal,oil,solar
Geothermal,passive Solar
Geothermal,passive Solar,wood
Geothermal,pellet,natural Gas,solar
Geothermal,propane Gas
Geothermal,solar
Geothermal,solar Panel
Geothermal,solar,natural Gas,wood
Geothermal,solar,wood
Geothermal,wood
Geothermal,wood,electric
Kerosene
Kerosene,electric
Kerosene,oil
Kerosene,oil,pellet
Kerosene,oil,wood
Kerosene,passive Solar,wood
Kerosene,pellet
Kerosene,wood
Kerosene,wood,electric
Natural Gas
Natural Gas,coal
Natural Gas,electric
Natural Gas,electric,coal
Natural Gas,electric,geothermal
Natural Gas,electric,oil
Natural Gas,electric,pellet
Natural Gas,electric,propane Gas
Natural Gas,electric,solar
Natural Gas,electric,solar,geothermal
Natural Gas,electric,wood
Natural Gas,electric,wood,pellet
Natural Gas,geothermal
Natural Gas,geothermal,oil
Natural Gas,geothermal,solar
Natural Gas,geothermal,solar,passive Solar
Natural Gas,geothermal,wood
Natural Gas,kerosene
Natural Gas,kerosene,electric
Natural Gas,kerosene,oil
Natural Gas,kerosene,oil,wood
Natural Gas,kerosene,wood
Natural Gas,none
Natural Gas,oil
Natural Gas,oil,coal
Natural Gas,oil,electric
Natural Gas,oil,geothermal
Natural Gas,oil,passive Solar
Natural Gas,oil,pellet
Natural Gas,oil,pellet,wood
Natural Gas,oil,solar
Natural Gas,oil,solar,passive Solar
Natural Gas,oil,wood
Natural Gas,oil,wood,electric
Natural Gas,passive Solar
Natural Gas,passive Solar,wood
Natural Gas,pellet
Natural Gas,pellet,electric
Natural Gas,pellet,passive Solar
Natural Gas,pellet,wood
Natural Gas,propane Gas
Natural Gas,propane Gas,electric
Natural Gas,propane Gas,solar
Natural Gas,propane Gas,wood
Natural Gas,solar
Natural Gas,solar Panel
Natural Gas,solar,electric
Natural Gas,solar,electric,passive Solar
Natural Gas,solar,geothermal
Natural Gas,solar,passive Solar
Natural Gas,solar,wood
Natural Gas,solar,wood,passive Solar
Natural Gas,unknown
Natural Gas,wood
Natural Gas,wood,coal
Natural Gas,wood,electric
Natural Gas,wood,electric,coal
Natural Gas,wood,geothermal
Natural Gas,wood,passive Solar
Natural Gas,wood,pellet
None
None,electric
None,electric,natural Gas
None,natural Gas
None,oil
None,pellet
None,wood
Oil
Oil,coal
Oil,coal,electric
Oil,electric
Oil,electric,natural Gas
Oil,electric,passive Solar,natural Gas,wood
Oil,electric,pellet
Oil,electric,propane Gas
Oil,electric,wood
Oil,geothermal
Oil,kerosene
Oil,natural Gas
Oil,natural Gas,pellet
Oil,natural Gas,wood
Oil,none
Oil,passive Solar
Oil,passive Solar,wood
Oil,pellet
Oil,pellet,electric
Oil,pellet,solar,wood
Oil,pellet,solar,wood,natural Gas
Oil,pellet,wood
Oil,pellet,wood,electric
Oil,propane Gas
Oil,propane Gas,electric
Oil,propane Gas,wood
Oil,solar
Oil,solar Panel
Oil,solar,passive Solar
Oil,solar,wood
Oil,solar,wood,coal
Oil,solar,wood,passive Solar
Oil,wood
Oil,wood,coal
Oil,wood,electric
Oil,wood,natural Gas
Oil,wood,passive Solar
Oil,wood,pellet
Oil,wood,solar
Passive Solar
Passive Solar,electric
Passive Solar,electric,propane Gas,solar
Passive Solar,geothermal
Passive Solar,natural Gas
Passive Solar,pellet
Passive Solar,solar
Passive Solar,wood
Passive Solar,wood,electric
Pellet
Pellet,coal,natural Gas
Pellet,electric
Pellet,electric,natural Gas
Pellet,electric,natural Gas,wood
Pellet,electric,solar,wood
Pellet,electric,wood
Pellet,geothermal
Pellet,natural Gas
Pellet,natural Gas,wood
Pellet,oil
Pellet,oil,wood
Pellet,propane Gas
Pellet,propane Gas,natural Gas
Pellet,solar
Pellet,wood
Pellet,wood,electric
Pellet,wood,kerosene
Pellet,wood,natural Gas
Propane Gas
Propane Gas,electric
Propane Gas,electric,natural Gas
Propane Gas,natural Gas
Propane Gas,natural Gas,wood
Propane Gas,none
Propane Gas,oil
Propane Gas,oil,wood
Propane Gas,solar
Propane Gas,solar,passive Solar,wood
Propane Gas,wood
Solar
Solar Panel
Solar Panel,wood
Solar,coal
Solar,coal,propane Gas
Solar,electric
Solar,electric,natural Gas
Solar,electric,passive Solar,wood
Solar,electric,wood
Solar,geothermal
Solar,natural Gas
Solar,natural Gas,geothermal
Solar,natural Gas,passive Solar,wood
Solar,natural Gas,wood
Solar,natural Gas,wood,electric
Solar,passive Solar
Solar,passive Solar,pellet
Solar,passive Solar,wood
Solar,pellet
Solar,pellet,wood
Solar,propane Gas,wood
Solar,wood
Solar,wood,electric
Solar,wood,electric,propane Gas
Unknown
Wood
Wood,coal
Wood,coal,natural Gas
Wood,coal,oil
Wood,coal,propane Gas
Wood,electric
Wood,electric,coal
Wood,electric,kerosene
Wood,electric,natural Gas
Wood,electric,oil
Wood,electric,passive Solar
Wood,electric,pellet
Wood,electric,propane Gas
Wood,geothermal
Wood,kerosene
Wood,natural Gas
Wood,natural Gas,coal
Wood,natural Gas,electric
Wood,natural Gas,pellet
Wood,none
Wood,oil
Wood,oil,electric
Wood,oil,propane Gas
Wood,oil,propane Gas,electric
Wood,passive Solar
Wood,pellet
Wood,pellet,coal
Wood,pellet,geothermal
Wood,pellet,propane Gas
Wood,propane Gas
Wood,propane Gas,electric
Wood,propane Gas,solar
Wood,solar