Your AC Is Probably the Mold Source: A Arvada Guide

Arvada's system story is altitude and appliance rather than ocean air: furnaces and air conditioners share duct systems that sit idle in their opposite season, humidifiers load winter air, and any run through a damp crawl space carries that space's moisture into the house's breathing. The inspection reads the system as a moisture path, coil, pan, humidifier, and crawl runs, before any cleaning is priced.

Arvada's system chapter is the humidifier. Against dry Front Range winters, whole house humidifiers run for months, and a unit set by comfort rather than by outdoor temperature loads the house past what its windows and ducts can carry, growing growth at the coil, in the pan, and on the cold surfaces of north rooms. The guide's read is settings before parts: humidity targets that step down as the temperature falls, a pan and coil inspection each cooling season, and duct runs in damp crawl spaces treated as the moisture path they are.

Second, the oversized unit. AC sized by tonnage bravado cools the house in short bursts and never runs long enough to dehumidify. The house reads 74 and feels wet, because it is: indoor humidity stays above the roughly 60 percent where surfaces grow things. In a climate where the AC is also the dehumidifier, short cycling is a mold program.

Third, duct sweat: cold ducts in a hot humid attic condense on their outer surface and drip onto ceiling drywall. The stain looks like a roof leak and gets fixed as one, sometimes twice, before anyone looks in the attic with the AC running.

The system rule for Arvada is seasonal: coil and pan read each cooling season, humidifier settings married to the outdoor thermometer all winter, and any duct run through a damp crawl space treated as part of the moisture system rather than as plumbing's neighbor. Systems distribute whatever they are fed, moisture included, and in this city they are fed by appliances and events, both of which can be governed.