WebMD Symptom Checker helps you find the most common medical conditions indicated by the symptoms lump or bulge, muscle cramps or spasms (painful) (upper arm (bicep)), muscle cramps or spasms (painful) (fingers) and muscle twitching (painless) including Hypocalcemia, Muscle strain, and Low potassium (hypokalemia).
What causes condensation in AC ducts? A: Condensation in AC ducts can be caused by improperly sealed openings or a lack of proper insulation around the AC duct. Condensation occurs when the outer portion of the duct work is cooled down and comes into contact with warmer air, according to Ace Plumbing.
Unless heat is supplied to the inside of the duct, said NAIMA, condensation will continue to form and water will begin to accumulate within the duct. If the temperature of the duct surface is low enough, condensation and possibly frost and ice will form, cautioned NAIMA. Not until the unconditioned space warms up and the ice melts will the problem become evident, explained NAIMA.