How HVAC Works
What Is a Tonnage?
"Tons" of cooling capacity, where 1 ton equals 12,000 BTU/hour. Residential AC systems typically range from 1.5 to 5 tons depending on home size and insulation.
This definition is pending sign-off from a licensed HVAC reviewer.
Why It Matters to You
The tonnage of your AC needs to match your home's actual cooling load — an oversized system (too many tons) cools fast but doesn't remove enough humidity, leaving Alabama summers feeling clammy even at the right temperature.
Practical Guidance
Ask for the tonnage of any system you're quoted, and ask how it was determined — a real load calculation, not just a match to your old unit's size.
See it in context
→ Right-Sizing an AC for Humid Alabama Summers
Related Terms
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