HVAC Sizing Calculator
Estimated Requirements
Cooling
2.5
Tons
Cooling
30.0k
BTUs
Heating
45.0k
BTUs
*This is a rough estimate. A formal Manual J calculation is required for exact sizing.
Calculator
HVAC Sizing Calculator
Use this tool to get a rough estimate of the heating and cooling capacity required for your home.
FAQ
Frequently Asked Questions
How many BTUs do I need to cool my house?
As a general rule, you need approximately 20 BTUs per square foot of living space. However, this varies based on your climate zone, ceiling height, and insulation quality. Use our sizing calculator for a more accurate estimate.
What is a Manual J calculation?
A Manual J calculation is the industry-standard method for determining the exact heating and cooling loads of a home. While our calculator provides an excellent ballpark estimate, a professional Manual J is required before installing new equipment.
Will an oversized AC unit cool my house faster?
It will cool your house faster, but it will not dehumidify it properly. Oversized units "short cycle" (turn on and off too quickly), leading to high humidity, uneven temperatures, and increased wear and tear on the system.
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