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Key Takeaways From the 7th Annual HVACR Training Symposium
How Attic Designs Need to Account for Heat and Moisture
I’ve Done It This Way for 20 Years – And That’s the Problem
It’s All Relative… Humidity
Vacuum: Moisture vs. System Leak
Sight Glass / Moisture Indicator
Condensation – It Isn’t Where Hot Meets Cold
Symposium – What is the House Trying to Tell Me?
Vapor Diffusion Ports, Hygric Buoyancy, and Fruit – Short #277
#moisture
Tech Tips:
This is a recap of the 7th Annual HVACR Training Symposium session, with a few key themes and takeaways. If you missed the symposium but find some topics of interest in this tech tip, you can still purchase a virtual ticket at hvacrschool.com/symposium. You must be logged in to your account with a ticket to […]
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This tech tip was heavily inspired by one aspect of Rick Sims’s 2021 HVACR Training Symposium session titled “Conductsation.” The entire presentation is worth a watch, but the advice in “Conductsation” and this tech tip are tailored to hot, humid climates. The contents of this tech tip may NOT work for colder climates. Dr. Allison […]
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Every trade has its favorite phrases. One of the most common in HVAC goes something like: “I’ve been doing it this way for 20 years and never had a problem.” When you hear that—or when you catch yourself saying it—it’s worth stopping to think. Usually, what that sentence really means is: “I’ve been doing it […]
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Florida’s got a lot of great qualities: some pretty neat wildlife, beaches all around, and theme parks. On the flip side, Florida also has hurricanes and a lot of humidity. As much of a pain as it might be for residents and contractors alike, humidity is one of my favorite topics. We see relative humidity (RH) […]
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This tech tip was written by Don Gillis with Chemours. Thanks, Don! Evacuation helps remove contaminants, like moisture and non-condensable gases, from HVAC/R systems, especially ones that are put into service for the first time or put back into service after a repair. Even though pulling a deep vacuum has always been a best practice, […]
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Often in commercial HVAC and refrigeration, you'll come across a sight glass/moisture indicator on the liquid line. (Oil sight glasses also exist, but those are different from what I'm talking about today.) Sight Glass The sight glass portion is simple; it's just there to show if the liquid line has a full line of liquid […]
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Photo by Stephen Rardon I hear it all the time. Someone will talk about undesired condensation on an air handler cabinet, on a supply air duct, in a ventilation duct, or on a vent like the one above. In reply, someone will inevitably say, “Condensation occurs where hot meets cold.” Early on in my career, […]
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Videos:
Podcasts:
Join Chris Hughes and Adam Mufich at the 7th Annual HVAC/R Training Symposium as they interview building scientist Tessa Murray. In this eye-opening conversation about what your house is really trying to tell you. Discover why HVAC techs need to understand building science fundamentals to truly master their craft. What You'll Learn: The critical […]
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In this short podcast episode, Bryan talks about some building science concepts, including vapor diffusion ports, hygric buoyancy, and… fruit packaging? Much of building science wisdom over the past couple of decades has dealt with air sealing (just seal it tighter!). However, building tightness has a darker side: more difficulty drying. When buildings can't […]
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