EfficiencyPlanned
SEER savings
Compare the estimated operating cost of two air conditioners or heat pumps.
Independent HVAC planning tools
Know the numbers before the sales visit.
Build a realistic home comfort budget, check the assumptions, and arrive at contractor conversations with better questions.
Editable assumptionsSources shownNo email required
Example planning range
$11,350 to $16,500
Base systemProject total
Efficiency
Standard tier
Ductwork
Reuse existing
Calculator library
Start with the decision in front of you.
The first calculator is live. The next tools will reuse the same validation, methodology, and testing patterns.
CostAvailable now
HVAC replacement cost
Build a planning range from home size, system type, efficiency, ducts, and local labor costs.
Open calculator
EfficiencyPlanned
Heat pump vs. gas furnace
Compare annual heating costs using your utility prices and equipment efficiency.
CostPlanned
AC replacement cost
Estimate an installed central air budget without mistaking it for a contractor quote.
CostPlanned
Furnace replacement cost
Plan for equipment, labor, venting, removal, permits, and likely extras.
SizingPlanned
AC sizing screen
Get a broad capacity range and learn what a proper Manual J calculation still needs.
Our standard
A useful estimate shows its seams.
Inputs
Change the assumptions instead of accepting a mystery average.
Math
See what the calculator adds and where uncertainty enters.
Limits
Know when you need a quote, inspection, or load calculation.