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Heat and Fresh Air Required

BTU Needed by square footage and insulation type
Square Feet well insulated average no insulation
up to 200 3,000 6,000 9,000
up to 400 6,000 12,000 18,000
up to 600 9,000 18,000 27,000
up to 800 12,000 24,000 36,000
up to 1000 15,000 30,000 45,000


This will give you an idea of how many BTU's you will need to heat an area. The form on the right will help you find the maximum BTU output that an area can sustain. Simply enter the length, width, and ceiling height in feet and click on the calculate button. The result is the maximum BTU capacity for an area with no other gas appliances.

Area Width:
Area Length:
Ceiling Height:
Operation:
Insulation Level:


BTU Needed:
Maximum BTU:





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