Find Your AC Size
Not sure what size AC and heating system your home needs? Answer a few quick questions and we'll give you an instant ballpark estimate — free, no email required. It's a great starting point before scheduling an in-home evaluation.
Six Quick Questions. Instant Result.
Answer the questions below and your recommended system size updates live. When you're ready to see pricing for that size, one click takes you straight to our transparent installation quotes.
Total heated & cooled living area (not counting garage or attic).
Used to estimate typical occupancy load.
Older homes generally have less insulation and higher cooling loads.
Double-pane windows dramatically reduce cooling load.
How much direct sun does your home get during the day?
Higher ceilings mean more air volume to cool.
This sizing tool provides a general Manual J estimate based on the information you enter. Actual system sizing depends on many build variables — insulation quality, ductwork condition, home orientation, window placement, air-sealing, and more. Call us to schedule a free in-home consultation, quote, or estimate with one of our comfort advisors.
Why Proper Sizing Matters
Getting the size right is one of the most important decisions in replacing an HVAC system. Here's why it matters — and what can go wrong when a system is sized incorrectly.
Comfort
An oversized system cycles on and off too quickly — cooling the air but never removing enough humidity. You feel clammy even at 72°.
Efficiency
An undersized system runs constantly on hot Houston days, driving up electric bills and never quite catching up during peak afternoons.
Longevity
Both oversized and undersized systems wear out faster. Proper sizing lets the equipment run at its designed sweet spot for years longer.
Real Evaluation
This tool is a starting point. A full Manual J load calculation done in-home accounts for orientation, ductwork, insulation, and air sealing.
Ready for an Exact Quote?
Now that you have a ballpark size, see our upfront installation pricing or schedule a free in-home evaluation for an exact quote tailored to your home.