Estimate the monthly cost of heating a home from its size.
The heat load of a home is its area times a per-square-foot demand. Dividing the delivered energy by system efficiency gives fuel input, which sets the bill. Heating is usually the largest home energy cost, and efficiency plus home size are the two levers that most change it.
Home Heating Cost
Cost = (area x BTU/sq ft x hours x days) / efficiency x price per million BTU
Cost = (area x BTU/sq ft x hours x days) / efficiency x price per million BTU The heat load of a home is its area times a per-square-foot demand. Dividing the delivered energy by system efficiency gives fuel input, which sets the bill.
Heating is usually the largest home energy cost, and efficiency plus home size are the two levers that most change it.
This calculator takes 5 inputs: Heated area, Heat load per sq ft, Heating hours/day, Fuel cost, System efficiency. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.