HVAC Tools
Free sizing calculator and efficiency guide. Get a quick read on what your home needs before you call.
BTU / Tonnage Calculator
Estimate the right AC size for your space.
Recommended BTU
20K BTU
Small Home / Apartment
Tonnage
1.5 ton
20,000 BTU/hr
Based on ASHRAE standard: 20 BTU/sq ft. Factors like insulation, ceiling height, and sun exposure may increase requirements. Ask your technician for a full Manual J calculation.
SEER2 Efficiency Rating
SEER2 (Seasonal Energy Efficiency Ratio) measures how efficiently your AC converts electricity into cooling. Higher = lower bills.
≥ 22 SEER2
Variable-speed inverter — 40%+ savings vs. aging unit
17–21 SEER2
Two-stage compressor — good comfort + efficiency
14–16 SEER2
Federal minimum — passes code, basic efficiency
< 14 SEER
Pre-2023 standards — significant savings opportunity
Your unit is relatively modern and likely rates Good to Better efficiency. A professional tune-up keeps it operating at its rated SEER.
Want a precise sizing?
Our techs perform a full Manual J load calculation that accounts for insulation, ceiling height, sun exposure, and ductwork. Free with any estimate.