What this HVAC cost calculator estimates
This tool is designed for planning a central AC replacement. It combines the inputs you provide with ComfortGauge's versioned pricing data and applies a state adjustment only where a supported modifier is available.
The result is a planning range rather than a contractor quote. Use it to understand the likely cost context before comparing proposals or deciding whether replacement is the right next step.
What changes the estimate
Home size, known system size, efficiency tier, installation complexity, and supported location adjustments can change the range. If you do not know the system size, leave that field optional rather than guessing.