What HVAC replacement costs in Portsmouth
Construction pricing in New Hampshire runs 4% above the national average, so HVAC replacement here typically lands between $9,880 and $17,160 installed, before rebates.
Figures are modeled from 2026 national baselines adjusted by a New Hampshire cost factor of 1.04. They are estimates for comparison, not quotes — your property, access and material choices move the real number.
HVAC Contractors serving Portsmouth
Ranked by Google review volume. Listings are sourced from public business data; those marked Verified member have claimed and confirmed their listing with us.
- S. G. Torrice Company
- Capstone Mechanical
- Berry & Jones Plumbing and Heating, Inc.
- CMC Mechanical Services LLC
- Petro Home Services
- Townsend Energy
- Heritage Home Service
We don't rank by who pays us. Always confirm a contractor's license and insurance before hiring.
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