AC Installation Cost in Tennessee

New AC installation in Tennessee costs $4,200 to $9,500 in 2026, though city-to-city prices vary quite a bit. Both heating and cooling get heavy use in Tennessee: its larger communities average 3,590 heating and 1,666 cooling degree days a year.

AC Installation Prices in Tennessee Cities

City	Estimate	Heating / cooling degree days
Nashville	$4,400 to $10,000	3,648 / 1,586
Memphis	$3,900 to $8,700	2,874 / 2,313
Knoxville	$3,600 to $8,200	3,911 / 1,363
Chattanooga	$4,100 to $9,200	3,029 / 1,920
Clarksville	$4,000 to $9,100	3,756 / 1,661

From 2020 through 2025, NOAA recorded 704 winter storm and ice events, 1,503 heat events, 170 extreme cold events and 1,063 hail reports in Tennessee. Those are the days when emergency HVAC calls pile up.

When It Makes Sense

The AC is 12 to 15 years old or more
It still runs on R-22 refrigerant
It has had more than one refrigerant leak
The house can't reach the thermostat setting on hot afternoons
Summer electric bills keep going up

What Moves the Price

Tonnage, based on house size and local climate
SEER2 rating and whether the compressor is single-stage or variable-speed
Whether the coil and line set also need replacing
Electrical work such as a new disconnect, breaker or wiring
The pad, permit and refrigerant (R-410A or the newer R-454B)

Common Questions

What size AC do I need?

It depends on square footage, insulation, windows and climate. The rough rule is a ton for every 450 to 650 sq ft, but only a Manual J calculation gives you a real number.

How long does a new AC last?

With yearly maintenance, 12 to 17 years. Salt air and extreme heat shorten that.

Other HVAC Prices in Tennessee

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