Across 465 permits filed since 2025-05-02, the median is $54,000; half of projects fall between $17,000 and $400,000. Figures are permit valuations reported to building departments. National cost guides answer this question with averages from other markets; these numbers are what homeowners in Greenwich, CT actually reported when they pulled permits.
Recent filings
- direct replacement 1st and 2nd flr. a/cTown of Greenwich · 2026-10-26$32,400
- Expansion of second floor habitable space by enlarging an existing bedroom and adding a new full bathroom. Work to include associated structural, plumbing, electrical and HVAC modifications as required.Town of Greenwich · 2026-10-26$75,000
- replacement of Bosch 1.5-2 ton A/R Handler and Bosch 15 Seer 1.5 - 2 ton condenser and Bosch 3 ton A/R Handler and Bosch 1.5-3 ton 20 Seer heat pump.Town of Greenwich · 2026-10-22$22,066
How to read these numbers
Permit valuations are the project cost the applicant reports to the building department. They skew slightly low — nobody rounds up for the permit fee — and scope varies, so the middle-half range is the honest picture: half of all hvac / central air permits in Greenwich, CT came in between $17,000 and $400,000. We exclude permits under $1,000, jobs filed as whole-house construction, and counties whose building departments don't reliably report valuations.
Same project, other places
HVAC / central air in New JerseyHVAC / central air in New YorkHVAC / central air in ConnecticutHVAC / central air on Long Island