Cool but clammy. The AC runs, the thermostat reads fine, and the house still feels sticky. Here's the honest, building-science answer — and why it's usually a sizing or building problem, not a broken AC.
Updated June 2026 • Written by the team at Anderson Heating, Air & Insulation, serving Calhoun since 1978 🐾
An AC removes humidity only while it runs, because moisture condenses on the cold coil over time. A house that's cool but clammy almost always has an oversized AC that cools fast and shuts off before it can wring moisture out — short cycles that never dehumidify. Other causes: humid outside air leaking in, ducts pulling moisture from a crawlspace or attic, or the thermostat set so high the unit barely runs. In humid Gordon County this is a sizing or building problem far more often than a broken AC — and Anderson can measure which it is.
Your air conditioner doesn't just cool the air — it dries it. As warm, humid indoor air passes over the cold evaporator coil, water condenses out of it and drains away. But that only happens while the system is running, and it takes time for meaningful moisture to condense. Cooling is fast; dehumidifying is slow. That single fact explains most 'cool but clammy' houses in Calhoun.
This is the most common cause, and it's counterintuitive. An oversized air conditioner has so much capacity that it cools the air to the thermostat setpoint in just a few minutes — and then shuts off, before the coil has had time to pull much humidity out. The thermostat is satisfied, so the unit rests, the humidity creeps back up, and you're left cool and damp. A correctly sized unit runs longer, steadier cycles that actually dehumidify. This is exactly why bigger is not better — the right-sized system feels better because it runs longer.
Most people are comfortable around 40-50% relative humidity in summer. Above roughly 55-60% the air feels sticky, sleep suffers, and you start risking mold and dust mites. The goal isn't a bone-dry house — it's keeping humidity in that comfortable band while staying cool.
Most shops can only sell you a dehumidifier. Anderson is a building-science company with six blower doors and six duct blasters, so we can actually find why your house is humid — oversized equipment, a leaky envelope, or ductwork pulling moisture in — and treat the real cause. The fix might be air sealing, sealing ducts, right-sizing the equipment, adding dehumidification, or a combination. We measure first, then prescribe.
We'll measure why — sizing, air leakage, ducts — and fix the real cause instead of masking it.
Call (706) 629-0749An AC removes humidity only while it runs. A cool-but-clammy house usually has an oversized AC that cools fast and shuts off before wringing moisture out. Other causes: humid air leaking in, ducts pulling moisture from a crawlspace or attic, or a thermostat set so high the unit barely runs. In humid Gordon County it's usually a sizing or building problem, not a broken AC.
Yes — the single most common cause. An oversized AC satisfies the thermostat in minutes and shuts off before much moisture condenses on the coil, leaving the air cool but damp. A correctly sized unit runs longer, steadier cycles that actually dehumidify. This is why bigger is not better.
Most people are comfortable around 40-50% relative humidity in summer. Above 55-60% the air feels sticky and you risk mold and dust mites. The goal is keeping humidity in that band while staying cool — not a bone-dry house. We measure the home to find why humidity is high and fix the cause.
We diagnose the cause first — a blower door for envelope leakage, a duct blaster for ducts pulling moisture, and a check for oversizing and short-cycling. The fix might be air sealing, sealing ducts, right-sizing, or adding dehumidification — often a combination. Most shops can only sell a dehumidifier; we measure and treat the real cause.