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Humidity & Moisture Guides
19 guidesHumidity is one of the biggest comfort and air quality issues in Austin homes. Too much moisture makes rooms feel clammy, lets mold and dust mites thrive, and can damage building materials. These guides explain where indoor moisture comes from and how to keep it in a healthy range.
New to the topic? Read What Relative Humidity Really Means first, then How Indoor Moisture Affects Your Home's Air and Why Your Vents and Ducts Sweat.
When an AC alone can't keep humidity down, a whole-home dehumidifier can help, and our whole home dehumidifier page explains how these systems work with your HVAC.
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Humidity & Moisture ControlWhat Should You Set Your Thermostat to When You’re Away?What to set your thermostat to for a workday, a summer vacation or a winter trip in Central Texas, balancing energy savings, humidity and…
Humidity & Moisture ControlWhy Do Your Windows Sweat, and Is It a Problem?Why windows fog up inside or outside in Central Texas, when condensation is harmless, and when it points to a humidity problem.
Humidity & Moisture ControlDo You Need a Dehumidifier If You Have Central AC?When central AC is enough to control humidity in an Austin home, the signs you need a dehumidifier, and portable versus whole-home options.
Humidity & Moisture ControlWhy Is My House Humid Even With the AC Running?The common reasons a house stays humid with the AC running in Central Texas, how to narrow down which one you have, and what…
Humidity & Moisture ControlWhat Indoor Humidity Level Should You Keep in an Austin Home?The indoor humidity range to aim for in an Austin home by season, how to measure it, and what to check when it runs…- Humidity & Moisture ControlDoes a Bathroom Exhaust Fan Need to Vent Outside?Why a bathroom exhaust fan must be ducted all the way outdoors, what happens when it dumps into the attic, and how to check…
Humidity & Moisture ControlShould You Run Your HVAC Fan on ON or AUTO?Why AUTO is usually the better fan setting in an Austin summer, and when running the fan ON or on circulate makes sense.- Humidity & Moisture ControlShould You Run Your AC After Water Damage?Usually yes, if the HVAC system stayed dry, because the AC pulls moisture out of the house; hold off if water or mold reached…
Humidity & Moisture ControlMoisture From Below: Slab and Pier-and-Beam Homes in Central TexasGround moisture reaches Austin homes as vapor through concrete slabs and as humid air in vented crawlspaces. Drainage handles liquid water; sealing, vapor barriers,…
Humidity & Moisture ControlFresh Air in a Tight House: Ventilation Options for Newer Austin HomesNewer Austin homes are built tight, so stale air, cooking odors and moisture no longer leak out by accident. The fix is planned ventilation:…
Humidity & Moisture ControlWhy Your Vents and Ducts Sweat: Dew Point and Condensation ExplainedVents and ducts sweat when a cold surface meets air whose dew point is higher than that surface's temperature. AC supply air leaves the…
Humidity & Moisture ControlWhy a Bigger AC Isn’t Better in Texas HeatAn oversized AC hits the thermostat setting so fast it shuts off before the coil pulls much moisture out. That short cycling leaves a…
