Best Gas Furnace Replacement in Savannah, GA
What to look for in Gas Furnace Replacement in Savannah
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 Savannah: 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: In Georgia, HVAC contractors hold a Conditioned Air Class I or II license through the Secretary of State — verify before signing.
Top picks
Thompson & Thompson Service Group★ Best for Gas Furnace Replacement
Consistently strong customer feedback (4.9★ from 3,370+ Google reviews; 2.6★ from 20+ Yelp reviews).
Google 4.9★ (3,370+)Yelp 2.6★ (20+)
Consistently strong customer feedback (4.9★ from 3,015+ Google reviews; 3.1★ from 55+ Yelp reviews).
Google 4.9★ (3,015+)Yelp 3.1★ (55+)
Consistently strong customer feedback (4.8★ from 235+ Google reviews; 2.8★ from 5 Yelp reviews).
Google 4.8★ (235+)Yelp 2.8★ (5)
Typical Gas Furnace Replacement costs in Savannah, GA (2026)
Last updated
Estimated ranges for Savannah, GA. 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) | $2,350–$5,100 |
| Gas line / electrical / permit modification (changeout) | $120–$705 |
| Condensing-furnace venting + condensate conversion (80%->95% AFUE) | $470–$1,400 |
Why Savannah's Humid Summers Change Furnace Replacement Choices
Savannah's hot, humid summers put extra strain on combined heating and cooling systems and influence ductwork corrosion and indoor humidity control, so choosing among the best furnace replacement companies in Savannah, GA means weighing moisture-resistant installs, proper ventilation, and equipment sizing for year-round comfort and efficiency.
How long does a furnace replacement usually take in Savannah, and who handles permits?
- 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.
- Can local contractors replace a gas furnace and handle flue or vent modifications?
- Yes. Many licensed HVAC contractors in Savannah perform gas furnace replacements and associated venting work. Ensure the contractor holds the appropriate license per the Georgia Construction Industry Licensing Board and that the permit covers combustion-air and flue changes.
- Are there special licensing or disposal rules for replacing oil or older gas furnaces in Savannah?
- Yes. Replacing oil or end-of-life combustion equipment may trigger additional local disposal and permitting steps. Confirm the contractor follows state licensing rules from the Georgia Construction Industry Licensing Board and ask how they handle fuel-tank or hazardous-waste disposal.
- Are same-day furnace replacements possible in Savannah?
- Some providers offer same-day furnace replacement for simple like-for-like units, but permit and inspection requirements can delay completion. Ask a contractor whether they can complete an install and obtain inspections within the desired timeframe.
- 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 Savannah, GA listed here. They send quotes back — no obligation.