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Reviewed by Marcus AldridgeSenior Editorial Reviewer — Plumbing, HVAC & Wet Trades
Who to call · Long Beach

Ductwork condensation and sweatingLong Beach, California

Sweating ductwork occurs when warm, humid air contacts cold duct surfaces, creating moisture that can drip onto ceilings, insulation, and framing. Left unchecked, duct condensation leads to water stains, mold growth, and damaged insulation. An HVAC technician can insulate ducts, seal leaks, and adjust humidity levels to eliminate the problem.

Who to call

For this problem in Long Beach, call a: HVAC Technician

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Symptoms to look for

  • Water droplets or wet spots on ductwork surfaces
  • Ceiling stains directly below duct runs in attic or basement
  • Mold or musty smell near supply or return vents
  • Insulation around ducts is wet, sagging, or falling off
  • Higher than normal indoor humidity despite AC running

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