HVAC System Replacement Cost in Jacksonville, Florida
Full HVAC system replacement in Jacksonville runs about $15,800 for a typical job. Basic installs start near $9,600. High-efficiency equipment with duct or electrical work can reach $20,900.
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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, which is why compressors and condenser fan motors wear out faster here than in northern cities. 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
- Both units keep needing repairs
- Some rooms are uncomfortable, and the energy bills are high
- Both the heating and cooling equipment are 15 years old or more
What Moves the Price
- Equipment sized to the house and climate
- Duct repair or replacement
- Efficiency ratings: SEER2, AFUE and HSPF2
- Furnace plus AC, or heat pump plus air handler
- Permits and electrical work
- Thermostat and zoning upgrades
We raised the national figures about 13% 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
- Removing the old equipment
- A load calculation and system design
- Startup, testing and warranty registration
- Duct connections and sealing
- New, matched heating and cooling equipment
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
- Make every bidder quote the same efficiency ratings, or the prices won't compare.
- Get one quote for a heat pump system and one for a furnace plus AC.
- Ask for a duct leakage test. Leaky ducts can lose 20 to 30% of what the system puts out.
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HVAC System Replacement Questions from Jacksonville Homeowners
How much is full HVAC system replacement in Jacksonville?
Plan on $9,600 to $20,900, with most jobs near $15,800. Equipment efficiency, house size and the condition of the ducts and wiring decide where your quote falls.
When is the best time to schedule full HVAC system 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 often should an HVAC system be replaced?
Most systems get replaced every 15 to 20 years. AC units and heat pumps usually wear out before gas furnaces do.
Can I replace only the AC and keep my furnace?
Yes, as long as the indoor coil and blower work with the new AC. A mismatched system loses efficiency and can void the warranty.
HVAC System Replacement Near Jacksonville
- Miami $10,700 to $23,400
- Tampa $10,600 to $23,100
- Orlando $10,300 to $22,300
- St. Petersburg $10,500 to $22,800
- Port St. Lucie $10,600 to $23,100
- Hialeah $9,900 to $21,600
- Cape Coral $10,600 to $23,100
- Tallahassee $8,800 to $19,300
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.