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Mixed / Temperate · ~13¢/kWh · 5-month season

Air conditioning in Tennessee: sizing, costs & the right units

Tennessee summers are hot and sticky across the Nashville Basin, Memphis, and the Tennessee Valley — humid subtropical heat with mild winters. Memphis in the west feels closer to the Deep South; the eastern mountains run cooler. Cooling season is roughly May through September.

Updated June 2026

What to look for in Tennessee

Humidity is the through-line, especially in West Tennessee — lean toward inverter units that dehumidify on long cycles. TVA's low power rates keep running costs among the friendliest on this list, so optimize for comfort and quiet over squeezing out the last efficiency point.

What cooling costs in Tennessee

Estimated at Tennessee's average residential rate (~13¢/kWh, approximate) and 8 hours/day. "Per season" assumes 5 cooling months. Your utility rate and usage will vary.

UnitEfficiencyEst. / monthEst. / season
Senville LETO SENL-12CD
Mini-split
 21.2 SEER2 $20 $100
LG Dual Inverter LW1022IVSM
Window
 15 CEER $20 $100
BLACK+DECKER BPACT14WT
Portable
 6.1 CEER $71 $355
Climate-matched

Units that fit Tennessee's climate

All 49 units

Tennessee AC questions, answered

How many BTU do I need in Tennessee?

Pick the Mixed/Temperate zone for the hot, humid summers. A 300 ft2 room lands near 6,500-7,500 BTU; West Tennessee's stickier air nudges that toward the top of the range.

What type of AC works best in Tennessee?

Inverter window units and mini-splits, for the long low-speed cycles that strip out the valley humidity rather than just chilling the air.

What does AC cost to run in Tennessee?

At ~12.8 cents/kWh and 8 hours a day, an efficient 12,000 BTU unit runs about $21-29/month — TVA power keeps Tennessee cheap to cool.

Electricity rates are approximate state averages; check your utility bill for your exact rate.