HVAC Replacement Cost Calculator
Use our free HVAC replacement cost calculator to build a planning budget from home size, system type, efficiency tier and local market level.
Your project details
Change the assumptions below to match your project.
What this calculator is good for
Use it to get a first-pass budget and to compare a few different system choices. It is not a sizing tool. A real equipment selection should be based on the home's heating and cooling load, not square footage alone.
Read the result as a scenario, not a quote
The estimate changes with home size, system type, efficiency tier and the market-cost setting you choose. Those inputs are deliberately simple. They help you ask better questions, but they cannot see duct leakage, electrical upgrades, line-set work, access problems or permit requirements.
What to get in writing from a contractor
- Indoor and outdoor model numbers
- How capacity was selected
- Ductwork that is included or excluded
- Electrical and refrigerant-line work
- Thermostat or control package
- Permit, disposal and startup/commissioning
- Labor and equipment warranty terms
Why two similar homes can need different equipment
Climate, insulation, window area, orientation, air leakage, ceiling height and duct design all affect load. That is why a 2,000 sq ft home in one climate can be a very different HVAC job from a 2,000 sq ft home somewhere else.
For more detail, see the 1,500 sq ft HVAC guide, the 2,000 sq ft guide, or the repair-versus-replacement guide.
Useful references
Use the result as a budget check, not a sizing decision
- Model the project type. Enter home size and the system option you want to compare.
- Read the exclusions. Duct corrections, electrical changes, line-set work, controls and permits can move a real proposal.
- Compare exact equipment later. Once bids arrive, replace the early assumptions with matched model numbers and written installation scope.
HVAC calculator reference
What it estimates
A replacement-budget scenario based on project inputs. It does not perform professional heating/cooling-load sizing.
What to verify
Matched indoor/outdoor model numbers, duct scope, electrical work, controls, line-set work, permits and commissioning.
Best next step
Use the budget to normalize local proposals, then replace model assumptions with the actual written installation scope.
On this page
Calculator · Budget workflow · SEER2 · Repair vs replacement