TBS comedy The Wedding Band announces guest stars. TBS has secured a bevy of high-profile guest stars to appear in The Wedding Band, the cablerâs upcoming comedy series that stars Brian Austin Green (Beverly Hills 90120) and Harold Perrineau (Lost) as two of four guys who escape their crazy lives by performing in a band.
1 A 30,000 BTU vent free natural gas wall heater can cost $100 to $450 and can provide heat of up to a 1,000 square foot space. 2  A 6,000 BTU LP gas wall heater will provide sufficient heat for a moderate room.3  This is an ideal source for primary or secondary source of heating. 4  These can be purchased from $250 to $460. A 30,000 BTU vent free natural gas wall heater can cost $100 to $450 and can provide heat of up to a 1,000 square foot space. 2  A 6,000 BTU LP gas wall heater will provide sufficient heat for a moderate room.
Best Answer: You will have to know the price of gas (I'm assuming natural gas) and the cost per Kwh for electricity. There are 100,000 btu's per therm of gas, so if your heater is a 75,000 btuh heater then you would use .75 therms per hour.The space heater will use 1.5 kw per hour. To find the exact therms for your heater, find your btu input on the furnace nameplate and divide that by 100,000 and you will get therms per hour.hanks! show more I have a gas furnace that is relatively old, I am guessing (1980's), and am trying to figure out how many therms per hr it uses to calculate the cost per hr to operate it vs. a space heater that uses 1500kw.