Best Gas Furnace Replacement in Columbia, SC
What to look for in Gas Furnace Replacement in Columbia
A gas changeout is permitted, combustion-safety work — not a like-for-like swap a handyman can do. We weight installers who pull the permit, size with an ACCA Manual J load calc, and commission the combustion with instruments over those quoting a tonnage rounded off the old unit.
- Combustion-safe install method. Provider names measured combustion (CO, draft, gas pressure) at commissioning and correct venting — the safety core of a gas changeout.
- Manufacturer authorization. Factory-authorized status preserves the furnace warranty and reflects factory training on the equipment.
- Manual J sizing. An ACCA Manual J load calculation right-sizes the furnace instead of copying the old (often oversized) equipment.
Verify before you book
- Whether a permit was actually pulled and the install inspected — confirm both before final payment.
- Whether combustion was measured at commissioning — ask to see the CO / draft / gas-pressure readings.
- License status with your state board — verify TDLR (TX), ROC (AZ), DBPR (FL), or your local equivalent before paying.
Gas Furnace Replacement in Columbia: licensing + combustion
A gas changeout is judged on the permit and inspection, an ACCA Manual J load calc, and measured combustion at commissioning — not a tonnage rounded off the old unit. Here is what each of the 3 installers below publishes: Verify your state's HVAC contractor license through the state licensing board before paying a deposit.
Top picks
2nd Wind Heating & Air Conditioning★ Best for Gas Furnace Replacement
Consistently strong customer feedback (4.8★ from 1,740+ Google reviews; 2.9★ from 10+ Yelp reviews).
Google 4.8★ (1,740+)Yelp 2.9★ (10+)
Consistently strong customer feedback (4.8★ from 1,035+ Google reviews; 2.9★ from 10+ Yelp reviews).
Google 4.8★ (1,035+)Yelp 2.9★ (10+)
Consistently strong customer feedback (4.7★ from 700+ Google reviews; 2.4★ from 25+ Yelp reviews).
Google 4.7★ (700+)Yelp 2.4★ (25+)
Typical Gas Furnace Replacement costs in Columbia, SC (2026)
Last updated
Estimated ranges for Columbia, SC. Actual cost varies with home size, equipment, and scope — always request a written quote for your job.
| Service | Typical range |
|---|---|
| Full gas furnace replacement (80% AFUE, installed) | $2,450–$5,300 |
| Gas line / electrical / permit modification (changeout) | $125–$735 |
| Condensing-furnace venting + condensate conversion (80%->95% AFUE) | $490–$1,450 |
How long should a Furnace Replacement in Columbia, SC actually take — and what affects the timeline?
- Does a gas furnace changeout need a permit?
- Almost always. Unlike a repair, replacing a gas furnace is permitted work in our launch states — the installer pulls a mechanical (and often gas) permit and a building inspector signs off the venting, gas connection, and combustion safety before the system goes into service. A quote that skips the permit to save money is skipping the inspection that protects you.
- Can a handyman replace my gas furnace?
- No. Connecting gas and venting combustion is licensed mechanical work, and an unlicensed 'handyman furnace install' is the single biggest red flag. Verify the contractor's state license (TDLR in TX, DBPR in FL, ROC in AZ) plus general liability insurance, and confirm they measure combustion (CO, draft, gas pressure) at commissioning rather than just lighting it and leaving.
- Do gas furnace replacements in Columbia require more time because of gas-line work and inspections?
- Yes. Gas furnace replacements commonly require shutoff, new fittings, pressure testing, and municipal or county inspection when applicable. Licensed technicians must complete leak and pressure tests and document results. Scheduling an inspection slot and coordinating a certified gas-safety sign-off can extend the timeline beyond mechanical install time.
- Can a furnace be replaced the same day in Columbia, and what enables same-day service?
- Some providers offer same-day furnace replacement when they have the correct unit and parts in stock and the home has accessible duct and gas connections. Same-day success depends on inventory, crew availability, and permit needs. For a faster same-day install, request a pre-site survey and have the paperwork and access cleared before arrival.
- How do commercial furnace replacements differ in timeline from residential projects in Columbia?
- Commercial furnace replacements typically take longer due to larger equipment, phased shutdown requirements, and on-site safety planning. Projects often require multi-day staging, crane or rigging permits, and coordination with building management. Allow extra time for load calculations, custom duct transitions, and any workplace safety briefings that reduce disruption to occupants.
- How do I get a quote from these furnace replacement companies?
- Submit one request on this page and we send it to the vetted furnace replacement pros in Columbia, SC listed here. They send quotes back — no obligation.