Across 1,092 permits filed since 2025-03-03, the median is $13,300; half of projects fall between $7,900 and $20,000. 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 Hartford County, CT actually reported when they pulled permits.
Recent filings
- -- HVAC Replacements -- AC replacement: - Remove and replace existing a/c system with new a/c equipment and related attic ductwork. New single zone mini split for in-law addition - Main House: (American Standard) Indoor Air Handler - 5Simsbury · 2026-08-31$53,800
- Panel swap to bigger electrical panel and installation of new 40 amp circuit for HVAC unit outsideTown of Granby · 2026-08-31$5,000
- ***DAVE IS ASSIGNED TO THIS**** Installation of a new high efficient Mitsubishi ductless system. There will be 2 indoor wall mounted units with 1 outdoor unit. There will be a 18K BTU unit installed for the family room area and a 12K BTUTown of Southington · 2026-08-27$10,200
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 Hartford County, CT came in between $7,900 and $20,000. 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