
Vent-free heater _________________ Btu/Hr Gas water heater* _________________ Btu/Hr Gas furnace _________________ Btu/Hr Vented gas heater _________________ Btu/Hr Gas fireplace logs _________________ Btu/Hr Other gas appliances* + _________________ Btu/Hr Total = _________________ Btu/Hr Example: Gas water heater 40,000 Btu/Hr Vent-free heater + 20,000 Btu/Hr Total = 60,000 Btu/Hr * Do not include direct-vent gas appliances. Direct-vent draws combustion air from the outdoors and vents to the o