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How many BTUs do I need to heat my room?

1. Select measurement type
Metric (metres) Imperial (feet)
2. Your room dimensions
Height of room:
Width of room:
Length of room:
Window Area x²:
3. Type of room:
4. What is below the room?
5. What is above the room?
6. Select type of outside wall:
7. Select type of window:
8. Select number of outside walls:

Watt/BTU requirements:
Watts Required: 
BTU's Required: