Free HVAC savings calculator
SEER Savings Calculator
This calculator estimates annual cooling cost before and after an AC efficiency upgrade, then shows the projected savings for customer conversations.
Use it while preparing replacement options so homeowners can understand the operating-cost difference between keeping old equipment and installing a more efficient system.
Compare current and new SEER ratings
Enter equipment capacity, current SEER, proposed SEER, local electricity rate, and estimated annual cooling hours to calculate cost difference.
How it works
How SEER savings are estimated
The calculator estimates seasonal energy use by dividing cooling output by SEER, then compares current and proposed annual electricity cost.
1
Convert tons to BTUs
One ton of cooling capacity is commonly treated as 12,000 BTUs per hour.
2
Estimate seasonal watt-hours
Cooling output multiplied by annual hours is divided by SEER to estimate energy use.
3
Compare annual cost
Current and proposed kilowatt-hours are multiplied by electricity rate to estimate savings.
Field example
Example: replacement option discussion
A comfort advisor can show why a higher-efficiency unit may cost less to operate without turning the proposal into a spreadsheet.
A 3-ton system running many seasonal hours can show meaningful savings when moving from an older SEER rating to a newer one.
The estimate can be paired with repair history, warranty status, comfort complaints, and financing options.
The final recommendation should still consider load calculation, duct condition, climate, and customer budget.
Common mistakes
What to double-check before using the result
Using a national average only
Electricity rate and operating hours should reflect the customer location whenever possible.
Selling efficiency without sizing
A high-efficiency system still needs correct load sizing and airflow.
Ignoring repair history
Energy savings are one part of the decision; age, breakdown risk, comfort, and warranty also matter.
After the calculation
Turn the result into cleaner field work
Attach savings to the quote
Save the assumptions with the replacement estimate so the customer can review them.
Prepare good-better-best options
Compare multiple equipment choices with clear differences in efficiency and comfort.
Schedule follow-up
Use reminders so replacement opportunities do not stall after the first visit.
Related resources
Related templates
FAQ
Questions service teams ask about this tool
What does SEER mean?
SEER means Seasonal Energy Efficiency Ratio. A higher rating generally means the system uses less electricity for the same cooling output.
Is this savings estimate guaranteed?
No. Actual savings depend on climate, usage, electricity rates, duct condition, thermostat settings, and installation quality.
Why does AC tonnage matter?
Tonnage describes cooling capacity. Larger systems produce more cooling output and can use more energy during operation.