HVAC capacity refers to the heating or cooling output of a unit, measured in tons or BTUs, indicating the unit’s ability to regulate indoor temperature.

Understanding HVAC Tonnage

In HVAC, tons refer to the cooling capacity, not the weight of the system. Proper AC sizing is crucial for efficient cooling. It involves a Manual J load calculation, considering factors like climate, home size, ceiling height, insulation, and sun exposure. A rough estimate uses 1 ton per 12,000 BTUs, matching specific tonnage to home square footage. For example, a 2-ton unit cools 1,000 sq. ft., while a 5-ton unit handles 2,500 sq. ft.

What Are BTUs?

BTUs measure the energy needed to change the temperature of one pound of water by one degree Fahrenheit. HVAC units, including heat pumps and furnaces, use BTUs to measure heating and cooling capacity. Colder climates typically require more BTUs for efficient heating.

Find the Right System for Your Home

To ensure proper system sizing, consult our HVAC professional at Central Air of Virginia for accurate calculations and the best options for your home’s needs.