I’m not generally a person who uses ‘told you so.’ If you miss this class, something comes up that got covered, and it bites you in the butt, it will be tempting to reach into that bag. Alternatively, attend the class (remote is fine for this one) and you can...
We’ve all heard the expression ‘Do the right thing, even when no one is looking.’ The Detroit Radiant/Re-Verber-Ray gang lives up to it. THE CHEAP WAY Consider…every infrared company lists the length of their heater and the BTU capacity of the heater. So, if you are...
Air Flow’s upcoming class Industry Testing Standards of HVAC Equipment (AMCA, AHRI, AMCA Sound) is going to spend some time on silencers. Why? The numbers insertion loss and pressure drop data is important. But more important is how the numbers were arrived upon. ...
“Tom, your VAV boxes are loud.” says contractor, speaking in a raised voice, pointing at the terminal box as it makes lots of noise. “I’m writing your brand out of the specs!” says engineer, fists on hips. “You can both go to he**.” I don’t say, because they might...
I know you guys love my pop quizzes. In your duct system, what leaks most? AHU/RTU High pressure ductwork Low pressure ductwork Terminal box Life safety damper Access Door Diffusers Of course, the devil is in the details. Question is, how much of this information is...
There is no HVAC board room like the image above where the owner is looking for leaks. OF COURSE no one wants a leaky system. But duct leakage doesn’t exactly rear up its head and bite you in the butt, does it? It’s difficult to measure, expensive to test, and...
