HVAC Replacement Cost Calculator
Estimate a preliminary HVAC replacement budget from system capacity, installed cost per ton and fixed duct, electrical, controls or permit costs.
Why use this hvac replacement cost calculator?
Estimate a preliminary HVAC replacement budget from system capacity, installed cost per ton and fixed duct, electrical, controls or permit costs. The model combines usage volume, a per-unit rate and fixed monthly cost to show total monthly cost and blended cost per unit.
Inputs used in this model
- System capacity
- Installed equipment and labor per ton
- Duct, electrical, controls and permit allowance
How to interpret the result
The blended unit cost is most useful when the usage assumption is realistic; fixed charges become more important when volume is low. Change the most uncertain inputs and compare multiple scenarios rather than relying on a single default case.
How to use it
Start with the inputs shown above, review the assumptions or options, then generate the result. Where the tool creates a file, keep the original until you have opened and checked the downloaded output.
Sources and assumptions
Equipment selection should consider efficiency, climate, sizing and the existing building system.
Frequently asked questions
Is HVAC Replacement Cost Calculator free?
Yes. The core tool is free to use without creating an account.
Do I need an account to use HVAC Replacement Cost Calculator?
No. You can use the core Toolbox workflow without signing up.
Does HVAC Replacement Cost Calculator work on mobile?
Yes. Toolbox is designed for modern mobile and desktop browsers, although complex file workflows can be easier on a larger screen.