A proper head load calculation is the key to customizing you comfort solution. There is absolutely no other way to ensure your family’s comfort, health, and safety.

Energy Star

A good contractor will not

Size your equipment solely on square footage.
Assume your existing equipment was sized properly

Department of Energy

It is the contractor's job to perform the correct sizing calculation for the home.

Problems Caused by Incorrect Sizing

Oversized   Undersized
Shorter run time   Longer run time
Higher Installation Costs   High Energy Costs
Large Temperature Swings   Shorter Life
Possible Mold Growth   Reduced Comfort