Free heat-pump savings calculator
Heat Pump Savings Calculator: What Could a Heat Pump Save?
Enter your current system's efficiency, the heat pump you are considering, and how hard the home runs, and the calculator estimates the electricity saved over a year — cooling and heating together.
Quick answer: How much could a heat pump save me? At the calculator's defaults — replacing an 11-SEER, 3-ton system with a 15.2 SEER2 / 8.5 HSPF2 heat pump running about 2,200 cooling hours and 250 heating hours a year, where the home already heats with an older heat pump — the estimate is about 2,685 kWh of electricity a year, most of it cooling. Enter your own rate from your utility bill for a dollar figure. Older systems, longer runtimes, and homes on electric strip heat save more.
How much could a heat pump save me?
Utility rates change and vary by plan. Around $0.15 per kWh is typical in the Tampa Bay area — confirm yours with your utility bill. Leave the rate blank to work in kWh only.
How this calculator works
Cooling savings = tons × 12,000 BTU/hr × equivalent full-load cooling hours × (1 ÷ old SEER as SEER2 − 1 ÷ new SEER2) ÷ 1,000, with the old system's SEER converted to SEER2 first (× 0.95 for ducted split systems) so both sides of the comparison use the same rating. Heating savings compare whatever heats the home today against the new heat pump's HSPF2: electric strip heat delivers about 3,412 BTU per kWh (a COP of 1), an older heat pump is rated in HSPF and converted to HSPF2 by × 0.85, and gas, propane or other non-electric heat counts as no electricity saving at all. Everything scales with the tons and hours you enter, and the estimate is electricity only — never equipment cost.
Pinellas County context
Pinellas County is close to ideal heat-pump country: cooling dominates the bill, and Tampa Bay's short heating season — winter lows that rarely stay below the 40s for long — makes a heat pump's heating efficiency a quiet bonus rather than the headline. Most Tampa Bay homes heat with heat pumps or electric air handlers with strip backup, which is why the calculator asks what carries the heat today.
Frequently asked questions
What SEER2 and HSPF2 should a new heat pump meet?
Under the U.S. Department of Energy's current national standards, new split-system heat pumps must meet 14.3 SEER2 and 7.5 HSPF2 — the same equipment that measured 15 SEER and 8.8 HSPF under the older rating metrics. Split air conditioners follow regional minimums instead — in the Southeast, which includes Florida, 14.3 SEER2 under 45,000 BTU/h and 13.8 SEER2 at 45,000 BTU/h and above. Ratings above the minimums are where the calculator's savings come from.
Is a heat pump worth it in Florida?
For most of Pinellas County the case is straightforward: cooling is the big share of the bill, and a modern heat pump earns its keep there, while Florida's generally mild winters let the same equipment heat efficiently without the strip-heat spikes. The honest comparison in our heat pump cost guide is against straight-cool AC with electric strips — the combination behind the calculator's largest heating savings.
Should I repair my old system or replace it with a heat pump?
Start with diagnosis, then weigh system age, remaining warranty, refrigerant and parts availability, and comfort. Our cost guidance uses the $5,000 rule as a screening shortcut: multiply equipment age by the repair estimate, and a result over $5,000 is a reason to compare replacement — not an automatic verdict. The savings calculator gives you the efficiency half of that comparison.
Why does the calculator ask about heating at all?
Because the heating half of the estimate depends entirely on what heats the home today. Tampa Bay winters are short, so heating savings are the smaller share of the result — but for homes on electric strip heat the heating side is still real money during cold snaps: resistance heat delivers about 3,412 BTU of heat per kWh, while a modern HSPF2-rated heat pump moves far more heat per kWh than it draws. A home that already heats with an older heat pump saves less, because it was never paying resistance-heat prices to begin with — so the calculator asks for that unit's HSPF. Gas, propane and other non-electric heat are not priced here at all.
Does this estimate include equipment or installation cost?
No. The calculator estimates electricity saved per year, never equipment cost — installation pricing depends on capacity, efficiency tier, duct condition, electrical scope, and what existing equipment can be reused, which is what our heat pump installation cost guide walks through. Pair the annual figure with a written quote to see the payback picture.