
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 |
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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. |
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