Across 2,989 permits filed since 2025-01-25, the median is $14,000; half of projects fall between $8,000 and $25,000. 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 Connecticut actually reported when they pulled permits.
Recent filings
- Ductless heat pump installation.City of Milford · 2026-07-24$10,400
- replace existing hvac equipment; indoor 3 ton a/c handler and exterior 3 ton condenser in same locationsTown of Greenwich · 2026-07-24$9,950
- Install (1) Fujitsu 1-ton indoor unit for second flooor; 1 2-ton indoor unit for kitchen; 1: 3 ton heat pump on composite pad to serve indoor unitsTown of Greenwich · 2026-07-24$21,487
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 Connecticut came in between $8,000 and $25,000. 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 on Long Island