What size heat pump do you need for a 2200 sq ft house in east Tennessee?

You need 1 ton of cooling for every 400 square feet.

This means 5 1/2 tons, but you would be best off with a 5 ton unit. a slightly undersized unit will run for longer periods of time compared to the 5 1/2 ton unit, but it will be a more efficient system.

The less starts and stops will also reduce the wear and tear on your compressor, which will result in a longer compressor lifespan.