Energy Efficiency
BTU
British Thermal Unit — the standard measurement of heat energy in HVAC, defined as the amount of energy needed to raise the temperature of one pound of water by one degree Fahrenheit.
What Is a BTU?
BTUs are the fundamental unit of measurement for HVAC capacity. Your furnace's heating capacity is measured in BTUs per hour (BTU/h). For reference, a typical residential furnace ranges from 40,000 to 120,000 BTU/h. Air conditioning is also measured in BTUs, with one ton of cooling equaling 12,000 BTU/h. Understanding BTUs helps you compare equipment and understand your home's heating and cooling needs, though you don't need to be an expert — that's what a load calculation determines.
Why It Matters for Your Home
BTU ratings help you understand whether a heating or cooling system has enough capacity for your space. However, bigger isn't always better. A system with too many BTUs will short cycle (turn on and off frequently), wasting energy and creating uneven temperatures. Proper BTU sizing through a professional load calculation ensures comfort and efficiency.
Need help understanding your home's heating and cooling needs? Call Trademark Tek at 541-500-0663.
Quick Facts
Category
Energy Efficiency
Also Known As
BTU
