| Acorn | Acorn Stove |
| Barrel | Barrel Type |
| Box | Box Stove |
| CEN | Central Heating |
| Cookstove | Cookstove |
| ElectricBboard | Electric Baseboard |
| Fireplace | Fireplace |
| FrplceSolidMas | Fireplace, Solid Masonry |
| Fireplace0Clear | Fireplace, Zero Clearance |
| FireplaceInsert | Fireplace Insert |
| FireplcWDoors | Fireplace with Doors |
| ForceAirFurn | Forced Air Furnace |
| Franklin | Franklin Stove |
| FreeSt | Free Standing |
| HeatPump | Heat Pump |
| Home | Homemade |
| HWaterBasebrd | Hot Water Baseboard |
| HotWaterCentral | Hot Water Central (Boiler) |
| Other | Other |
| PelletStove | Pellet Stove |
| PBellyWDoors | Pot Belly With Doors |
| PotBellyWODoors | Pot Belly Without Doors |
| RadiantCeiling | Radiant Ceiling |
| RadiantFloor | Radiant Floor |
| SolidFuel | Solid Fuel - when the specific type of solid fuel heater is unknown |
| SpaceHeater | Space Heater |
| WallFurnace | Wall Furnace |
| WoodOilCombo | Wood/Oil Combination |
| WoodFurnace | Wood Furnace |
| WFurnAddOn | Wood Furnace, Add-on |
| WoodAirtight | Wood Stove, Airtight |
| WoodNotAirtight | Wood Stove, Not Airtight |
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