Each state page uses the same transparent home-and-system model as the national calculator, then applies the latest state price level available from the U.S. Bureau of Economic Analysis. It also adds state rules and public resources that a ZIP-only estimate cannot explain.
Published state guide
Why the state estimate is still a range
A state price index can account for broad differences in local prices, but it cannot see the slab beneath a finished room, the condition of a crawl-space floor, or the pipe route available inside a particular house. Those details often matter more than the state adjustment. A contractor may also need more than one suction point when foundation areas do not communicate well beneath the home.
For that reason, each state calculator produces a low-to-high planning range. The range is useful when comparing the scope of several written proposals. It should not be treated as a promised price or used to select a fan before diagnostic work.
What to compare on a local quote
- The foundation areas included in the proposed system.
- The expected number of suction points and the planned pipe route.
- Electrical work, permit fees, and finish repairs.
- Installer credentials and any state license that applies.
- Post-installation testing, warranty terms, and follow-up work.
Regional adjustment source: U.S. Bureau of Economic Analysis regional price parities. Last reviewed September 3, 2026.