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Home Therapist
SEER2 Savings Calculator
See how much you could save by upgrading your AC system
1
Where is the property?
Your ZIP determines your city, which appears in the comparison below and keeps the estimate relevant to your area.
The electricity rate and cooling hours are set to Florida averages. If you have your actual utility rate handy, enter it for a more accurate result.
Florida (FL)
9 SEER2 vs 18.0 SEER2
on a 3 Ton Air Conditioner in Florida
2
Tell us about your current A/C
Find the rating on your outdoor unit’s data plate (the metal sticker on the side).
Not sure? Units installed before 2006 are typically 9–10 SEER. Units from 2006–2022 range from 13–18 SEER.
Choose SEER2 if your unit was installed after January 2023.
System Efficiency Rating
9 SEER2
6101520
System Size (Tonnage)
3 Tons
1.52.53.55
1.5–2 Ton: small home · 2.5–3 Ton: mid-size · 3.5–5 Ton: large home
Research shows AC systems lose ~5% efficiency per year without regular maintenance
(SEERa ≈ SEERr × 0.95ⁿ). A 14 SEER unit after 10 years runs at roughly 8.6 SEER.
If your system hasn’t been serviced regularly, its real efficiency is likely lower than what’s on the label.
3
What system are you considering?
All new residential systems installed after January 2023 are rated in SEER2.
Entry-level units start at 13.4 SEER2. Mid-efficiency units run 15–17 SEER2.
For strong long-term savings, look for 17+ SEER2. If a load calculation recommends a different size, adjust the tonnage accordingly.
New System SEER2 Rating
18.0 SEER2
13.41517.520
New System Size (Tonnage)
3 Tons
1.52.53.55
Same size as current system
✓
Your Estimated Savings
Based on 13¢/kWh and 3,500 cooling hours/year in Florida.
YOUR CURRENT A/C
costs around
$0
per year in electricity
YOUR NEW A/C
would cost around
$0
per year in electricity
Save $0 per year
5-Year
$0
10-Year
$0
15-Year
$0
This calculator is intended for informational purposes only. Actual savings depend on
home insulation, usage habits, duct condition, and equipment installation quality.
All calculations use ASHRAE cooling load methodology. A proper Manual J load calculation
is recommended before any equipment replacement.
© Home Therapist Cooling, Heating & Plumbing. All rights reserved. | Disclaimer: Results generated by this tool are estimates for informational purposes only. They do not constitute an official engineering calculation. Home Therapist Cooling, Heating & Plumbing recommends consulting a licensed professional before making any purchasing decisions.