Dew point is a critical measurement in moisture control because it tells you when condensation will occur. When surfaces cool below the dew point temperature, moisture from the air condenses into water droplets—leading to mold, wood rot, corrosion, and musty odors. Unlike humidity or temperature alone, dew point provides a more accurate picture of the risk for condensation. That’s why ATMOX systems use dew point calculations to guide fan and dehumidifier operation. With sensors inside and outside the crawl space or attic, the system compares dew point values to determine when ventilation will dry the space—or when it could actually make things worse. This smart use of dew point ensures energy-efficient operation while protecting the structure and indoor air quality. Understanding and monitoring dew point is the foundation of intelligent moisture control and helps homeowners and installers make informed decisions.
When it comes to household spaces, attics often remain overlooked. Out of sight and out of mind, it's easy to dismiss the significance of attic heat. However, just because you rarely venture into this area doesn't mean it should be ignored. The consequences of...
Understanding the relationship between changes in season, geography, and dew point is crucial for maintaining a healthy crawl space environment. Managing moisture levels in your crawl space is important for maintaining the structural integrity and indoor air...
What is dew point and how does it affect your home? Dew point is the temperature at which air becomes saturated with water vapor and condenses into visible water droplets. This moisture can lead to issues such as mold, mildew, and poor indoor air quality in your...
Why Now? My crawl space was always fine, so why am I having issues with my crawl space after all these years? You may have lived in your home for 20 or 30 years and never had a moisture problem in the crawl space until now. Why is there a problem if nothing has...
Crawl spaces have evolved into two main categories: Vented and Unvented (also referred to as Closed). The International Residential Code (IRC) has specific regulations for moisture control for both vented and unvented crawl spaces. For the purposes of this blog, we...
How effective is your dehumidifier in winter? The answer probably depends on when and where you are using it. Dehumidifiers used in a crawl space are an effective tool in combatting moisture. They are often an integral part of your crawl space moisture control...
A dehumidifier is a great moisture reduction tool for the crawl space. However, the cost to run a dehumidifier can greatly impact your energy cost. How does a dehumidifier work? The dehumidifier’s internal fan pulls warm moist air in and then cools the air. Cold...
What should my crawl space humidity be? Sounds like an easy question, but humidity is actually a little tricky and sometimes misleading. Why is that? Most people in the crawl space industry often forget that humidity is rH and that “r” is important to remember. It...
ATMOX focuses on a dew point comparison - not relative humidity. How do you explain dew point vs humidity?
Crawl space ventilation fans work as an excellent tool to dry a crawl space, BUT it is critically important to use them at the right time. If you’ve been researching crawl spaces before landing on this blog, your head is probably spinning. There are so many, many...
Let's bust this myth: ATMOX fans are just fans on a humidistat. ATMOX fans are generally connected to a controller. That controller is much more sophisticated than a simple humidistat. Let's explore what makes a crawl space setup or "ATMOXsphere" different. ATMOX...