What HVAC replacement costs in Duncan
Construction pricing in South Carolina runs 10% below the national average, so HVAC replacement here typically lands between $8,550 and $14,850 installed, before rebates.
Figures are modeled from 2026 national baselines adjusted by a South Carolina cost factor of 0.90. They are estimates for comparison, not quotes — your property, access and material choices move the real number.
HVAC Contractors serving Duncan
Ranked by Google review volume. Listings are sourced from public business data; those marked Verified member have claimed and confirmed their listing with us.
- Tuck & Howell, Inc.
- Spring Aire Heating & Air Conditioning
- C&C Boiler Sales and Service
- Without Limitations Heating and Air
We don't rank by who pays us. Always confirm a contractor's license and insurance before hiring.
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