How many ton do I need for a 1,000 sqft?

Hello, typically furnaces aren't measured by tonnage, and in this case by kW for electric. For 1,000 sqft, a 12kW furnace will suffice. Now, if you're also looking for a heat pump, then a 2 ton will pair well. If you have any further questions please feel free to give us a call! Thank you.