HVAC buildng codes
Soem basic info.
HVAC ==> Heating, Ventilation and Air-conditioning.
Click also on the first link within, being: "home page news"
as a reference:
5,000 BTU/hr heating needs average room, New England/notheast
12,000 BTU/hr average output of stove-top gas burner.
22,000 BTU/hr average output of a gas dryer's burner.
40,000 BTU/hr average storage-type water heater, 40 gallons
50,000 BTU/hr average storage-type water heater, 50 gallons
60,000 BTU/hr average storage-type water heater, 60 gallons
whole house heating usually 100k to 200k BTU/Hr
http://www.codecheck.com/mechcode.htm#anchor790633