Furnace Replacement Cost in Jacksonville, Florida
Furnace replacement in Jacksonville runs about $4,900 for a typical job. Basic installs start near $2,700. High-efficiency equipment with duct or electrical work can reach $6,700.
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Jacksonville Weather and HVAC Load
NOAA's 1991-2020 climate normals put Jacksonville at 943 heating degree days and 3,302 cooling degree days per year. Cooling carries most of the load. Heating equipment gets light use, so a furnace here often outlasts the AC it's paired with. A normal year brings 4 nights at or below freezing and 96 days over 90°F.
| Heating degree days / year | 943 |
|---|---|
| Cooling degree days / year | 3,302 |
| Nights at or below 32°F | 4 |
| Days above 90°F | 96 |
| Average low / high | 62.9°F / 79.9°F |
Jacksonville Housing Stock
The median Jacksonville home dates to 1986, according to the Census ACS. That makes the typical house about 40 years old. Plenty of houses from this period still run original 1990s or early-2000s equipment, which is past its expected service life. Owners live in 57.4% of occupied homes, roughly 221,000 households. With a median household income of $66,981 and a median home value of $266,100, local labor rates come out near the national middle in our model.
Between 2020 and 2025, NOAA's Storm Events Database logged 16 hail days and 72 days with damaging thunderstorm winds in Duval County. The largest hail reported was 2 inches across. Hail flattens the thin aluminum fins on condenser coils and cuts airflow. After a big storm, take a look at the outdoor unit; homeowners insurance often covers the damage. Duval County also had 7 tornado days in that period.
When Replacement Makes Sense
- Some rooms stay cold, the burner short-cycles, or the ignitor keeps failing
- Gas or electric bills keep climbing even though usage hasn't changed
- A repair quote runs past a third of the cost of a new unit
- A tech found a cracked heat exchanger, or the CO detector has gone off
What Moves the Price
- Single-stage, two-stage or modulating gas valve
- New PVC venting if you move to a condensing model
- BTU size, which should come from a Manual J load calculation
- AFUE rating: a basic 80% unit vs. a 96% condensing furnace
- Condition of the existing ductwork and any changes it needs
- Permit and inspection fees, which the local building department sets
We lowered the national figures about 14% for Jacksonville using local income, home values and the equipment size this climate needs. Real bids can still come in outside the range, so collect three written quotes.
What the Quote Should Cover
- The new furnace, filter rack and thermostat wiring
- Removing and hauling away the old furnace
- The permit and the manufacturer warranty registration
- Combustion and safety tests
- Gas line and vent connections
Florida Permits, Efficiency Rules and Rebates
Florida is in the DOE's Southeast region, where new split central air conditioners need at least 14.3 SEER2 (13.8 SEER2 for systems of 45,000 BTU/h and up). Expect the contractor to pull a mechanical permit for a replacement job in Jacksonville. If a bidder suggests skipping it, move on. Also ask for a Florida license or registration number and proof of insurance. The federal 25C tax credit ended for equipment installed after December 31, 2025, so incentives now come mostly from utilities and state programs. Check your electric and gas utility's rebate page before you pick equipment.
Before You Hire
- Replace it in early fall if you can. A no-heat emergency in January costs more and leaves you fewer choices.
- Look up utility rebates on 95%+ AFUE units before you buy.
- Make sure all three quotes are for the same AFUE and staging, or you can't compare them.
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Furnace Replacement Questions from Jacksonville Homeowners
How much is furnace replacement in Jacksonville?
Plan on $2,700 to $6,700, with most jobs near $4,900. Equipment efficiency, house size and the condition of the ducts and wiring decide where your quote falls.
When is the best time to schedule furnace replacement in Jacksonville?
Between late fall and early spring. With 96 days over 90°F, Jacksonville contractors are booked solid all summer, and off-season jobs are easier to schedule and negotiate.
How long does a furnace replacement take?
A straight swap is usually done in one day, somewhere between 4 and 10 hours. Moving to a condensing furnace with new PVC venting can add a few more.
Is a high-efficiency furnace worth it?
In cold climates, a 95%+ AFUE furnace usually earns back the price difference in lower gas bills. Where winters are mild, the payback can take a very long time.
Furnace Replacement Near Jacksonville
- Miami $2,900 to $7,100
- Tampa $2,900 to $7,000
- Orlando $2,800 to $6,900
- St. Petersburg $2,800 to $6,900
- Port St. Lucie $2,900 to $7,000
- Hialeah $2,700 to $6,600
- Cape Coral $2,900 to $7,000
- Tallahassee $2,700 to $6,700
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Jacksonville Nas; NOAA Storm Events Database 2020-2025, Duval County. Prices are our estimates, not contractor quotes. Updated 2026.