HVAC System Replacement Cost in Memphis, Tennessee
Full HVAC system replacement in Memphis runs about $12,900 for a typical job. Basic installs start near $7,800. High-efficiency equipment with duct or electrical work can reach $17,000.
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Memphis Weather and HVAC Load
NOAA's 1991-2020 climate normals put Memphis at 2,874 heating degree days and 2,313 cooling degree days per year. Neither season dominates in Memphis. That balance is a big reason heat pumps and dual-fuel systems sell well in Tennessee. Count on roughly 44 nights below 32°F and 72 afternoons past 90°F in a typical year. Snowfall averages about 3 inches. For a 2,000 sq ft house, this climate points to a heating load somewhere near 45,000 BTU/h. Treat that as a starting number. A Manual J calculation will move it up or down based on insulation and windows.
| Heating degree days / year | 2,874 |
|---|---|
| Cooling degree days / year | 2,313 |
| Nights at or below 32°F | 44 |
| Days above 90°F | 72 |
| Average low / high | 53.8°F / 73°F |
Memphis Housing Stock
The median Memphis home dates to 1970, according to the Census ACS. That makes the typical house about 56 years old. A lot of these homes are on their second or third system by now. The ductwork is usually original, and leaky joints are common. Memphis has roughly 117,000 owner-occupied homes, or 46% of households. The median home value is $157,100, and median household income is $51,211. We use both figures to adjust labor and pricing for this page.
Between 2020 and 2025, NOAA's Storm Events Database logged 20 hail days and 47 days with damaging thunderstorm winds in Shelby 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.
When Replacement Makes Sense
- Both units keep needing repairs
- Both the heating and cooling equipment are 15 years old or more
- Some rooms are uncomfortable, and the energy bills are high
What Moves the Price
- Efficiency ratings: SEER2, AFUE and HSPF2
- Duct repair or replacement
- Equipment sized to the house and climate
- Permits and electrical work
- Furnace plus AC, or heat pump plus air handler
- Thermostat and zoning upgrades
We lowered the national figures about 8% for Memphis 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
- Duct connections and sealing
- A load calculation and system design
- Removing the old equipment
- Startup, testing and warranty registration
- New, matched heating and cooling equipment
Tennessee Permits, Efficiency Rules and Rebates
Tennessee 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 Memphis. If a bidder suggests skipping it, move on. Also ask for a Tennessee 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
- Get one quote for a heat pump system and one for a furnace plus AC.
- Make every bidder quote the same efficiency ratings, or the prices won't compare.
- 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 Memphis Homeowners
How much is full HVAC system replacement in Memphis?
Plan on $7,800 to $17,000, with most jobs near $12,900. Equipment efficiency, house size and the condition of the ducts and wiring decide where your quote falls.
When is the best time to schedule full HVAC system replacement in Memphis?
In spring or fall. Those are the slow months between heating and cooling season in Memphis.
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 Memphis
- Nashville $9,100 to $19,900
- Knoxville $7,800 to $17,000
- Chattanooga $8,300 to $18,000
- Clarksville $8,300 to $18,100
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Memphis International Airport; NOAA Storm Events Database 2020-2025, Shelby County. Prices are our estimates, not contractor quotes. Updated 2026.