Across 292 permits filed since 2025-01-25, the median is $15,620; half of projects fall between $11,990 and $22,504. 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 Putnam County, NY actually reported when they pulled permits.
Recent filings
- Installation of full HVAC system for new single-family dwelling - inclusive of furnace, coil, condensing unit, and duct workSoutheastTownNY · 2026-07-24$24,900
- NEW DUCTLESS HEAT PUMP, AS APPLIEDTown of Putnam Valley · 2026-07-24$17,500
- Installation of mini split system in Apts. 1, 3 and 4Town of Patterson · 2026-07-23$12,875
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 Putnam County, NY came in between $11,990 and $22,504. 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