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Humidity Too High Indoors

Sticky, clammy air even with the A/C running — your system isn't dehumidifying right.

Call (209) 216-7240

Symptoms you're seeing

  • Indoor air feels humid even at 72°F
  • Window condensation in summer
  • Musty smell, mold near vents
  • A/C short-cycles, never runs long enough to dry the air

What's actually causing it

Most likelyOversized A/C — short-cycles before dehumidifying
CommonClogged condensate drain (water staying in pan)
CommonSingle-stage system at very low cooling load
PossibleDuct leakage pulling humid attic air into return
PossibleNo whole-home dehumidifier (high humidity climates)

What to do right now

  1. 1Set thermostat fan to AUTO, not ON (ON re-evaporates moisture off the coil)
  2. 2Verify drain line is flowing freely
  3. 3Replace air filter and check return duct seal
  4. 4Consider a variable-speed system or whole-home dehumidifier upgrade

When to call us

Schedule when convenient. Humidity issues rarely need same-day fixes but persistent humidity grows mold — don't let it ride for months.

Estimated cost
$185 diagnostic. Fan setting fix: free. Whole-home dehumidifier install: $2,800–$4,500.
Call (209) 216-7240 Now

FAQs

What humidity is comfortable?

40–55% indoor humidity. Below 30% is too dry (winter), above 60% feels muggy and grows mold.

Will a bigger A/C help with humidity?

Opposite — bigger systems short-cycle and remove LESS humidity. Right-sizing is everything.