# How do you calculate HVAC tonnage?

When you are planning to install a new heating and cooling system, you'll need to consider the HVAC tonnage in order to purchase the correct unit. To determine tonnage, you'll need to know the size of the home, the number of floors, the amount of window area, and the amount of insulation. Check out this HVAC tonnage calculator: www.gartnerhvac.com
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