Across 246 permits filed since 2025-01-25, the median is $15,854; half of projects fall between $7,500 and $30,000. 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 Norwalk, CT actually reported when they pulled permits.
Recent filings
- INSTALLATION OF 5 JUJITSU MINI SPLITSCity of Norwalk · 2026-07-22$18,000
- PROVIDE WIRING FOR ONE REPLACEMENT HEAT PUMP CONDENSER AND GAS FURNACECity of Norwalk · 2026-07-22$1,900
- REPLACE EXISTING HEAT PUMP SYSTEM WITH ONE LENNOX ELITE SERIES 2- TON SIDE DISCHARGE HEAT PUMP MODEL EL18KS AND ONE LENOX 2-TON VARIABLE SPEED AIR HANDLER MODEL CBK45City of Norwalk · 2026-07-21$15,707
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 Norwalk, CT came in between $7,500 and $30,000. 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