What Is a BTU?
A BTU (British Thermal Unit) is the standard unit used to measure heating and cooling capacity — specifically, how much heat a furnace can produce or an air conditioner can remove per hour. Residential equipment is commonly rated in BTUs per hour, or grouped into "tons" for cooling capacity.
Why It Matters to You
BTU capacity, matched correctly to your home's size and insulation, is a bigger factor in comfort than efficiency rating alone — an oversized or undersized BTU rating causes real problems either way.
Practical Guidance
Don't assume a bigger BTU rating is automatically better — correct sizing based on your specific home matters more than maximizing capacity.
Let's get your comfort back on track.
Tell us what's going on and our Downers Grove team will reach out — usually within the hour during business hours. For emergencies, call us directly.
Call us(630) 442-9250- Emergency Service Available
- Licensed & Insured
- 5-Star Rated by Our Customers
- Downers Grove, IL & 19 nearby towns
6308 Barrett Street, Downers Grove, IL 60516
Request your service
No obligation. We never sell your info.