Electric Radiant Floor Heating Operating Cost Calculator

No. This calculator estimates operating costs for electric radiant floor heating only. Hydronic systems run on a boiler and circulating pump, so their operating cost depends on fuel type and boiler efficiency rather than watts per square foot, and the figures here would not apply.

No. Electric floor heating draws about 12–15 watts per square foot, and it only heats the rooms you choose rather than the whole house. Paired with a programmable thermostat that runs it a few hours a day, most systems add only a few dollars to a monthly bill.

A 1,500-watt system costs about C$0.26/hr to run for one hour at your local electricity rate. Floor heating rarely runs continuously, though — once the floor reaches its set temperature the thermostat cycles the system off, so real-world usage is typically well below the full hourly figure.

Most homeowners spend only a few dollars a month. A typical 35 sq. ft. bathroom system draws about 525 watts, which costs roughly C$22.05/month when run 8 hours a day at your local rate. Larger rooms scale up proportionally with heated square footage.

You need three things: the heated square footage of your room, how many hours per day you expect the system to run, and your electricity rate in cents per kilowatt-hour. Your rate appears on your utility bill; if you skip it, the calculator uses an average rate for your region.

The calculator assumes the system runs for the full hours you enter, but a thermostat cycles it off once the floor is warm — so actual costs are often lower. Insulation, subfloor type, floor covering, and room temperature all affect run time. Treat the result as an upper-bound estimate, not a billed amount.