The AC is keeping the temperature down but the house feels sticky and clammy. Especially in the mornings and after rain.
You probably came here because…
- Indoor humidity reads above 55% even with AC running
- Windows fog up on the inside
- Wood floors feel damp or sticky
- You crank the AC lower but it just makes the house cold AND sticky
What’s actually happening
Cooling and dehumidifying are two different jobs. An AC does both while it runs, but if the AC only runs short cycles (because it's oversized or the house cools too fast), it never has time to pull humidity out.
This is the counter-intuitive part: an AC that's too BIG for your house will short-cycle, satisfy the thermostat quickly, and shut off before it can dehumidify. The right size runs longer, gentler, and pulls more moisture.
In Tennessee summers you can hit 70%+ outdoor humidity for weeks. Even a properly sized AC struggles. The real fix is often a whole-house dehumidifier tied into your ductwork – not upgrading the AC.
What we do about it
Buy a $15 hygrometer
Get a cheap indoor humidity gauge from a hardware store. If your indoor humidity is above 55% during AC season, that's the actual problem. If it's below 50% but you still feel muggy, something else is going on.
Set the fan to AUTO not ON
If the thermostat fan is on ON, the blower runs constantly – even when the AC isn't actively cooling. During those non-cooling minutes, moisture that was on the coil evaporates back into the house. AUTO fixes this.
Consider a whole-house dehumidifier
For $2,500-3,500 installed, a dedicated dehumidifier ties into your ductwork and pulls moisture out independently of the AC. Works in shoulder seasons when the AC barely runs. Best money we install for humidity comfort.
When to just call
If you're being sold a new bigger AC for a humidity problem, get a second opinion. Bigger usually makes humidity worse, not better. Call (423) 637-1846 – we do dehumidifier installs constantly and we'll be honest about which one you need.
Ready to fix it?
Call the family that’s been doing this in the Sequatchie Valley since 1996.