When you pick a ceiling or sidewall diffuser, the throw in heating and cooling mode changes due to buoyancy. You have to pull out the book, look at the flow, and look at the throw, to get the right neck size. Get that wrong, a draft is created, as is a call back for...
If you’ve been reading this blog for a while, you know that DV has been trumpeted by me for 15 years. Still, many of you are not believers. Oh, I do love a challenge. Yes, I’m talking to you, Mr. ‘I haven’t had anyone ask for it’. and Ms. ‘I haven’t run into the...
Back in 2011, when Edition 1 came out, Price gave me a collapsible dolly to help deliver them. You know, those Canadians have universal healthcare, so they didn’t concern themselves much about the handful of trips I made to the chiropractor after physically...
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...
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. ...
That’s a dandy of a question. It depends on the problem you are trying to solve. LINT: Price can accommodate a standard VAV box with an orifice ring instead of a cross flow sensor. Take the static pressure on both sides of the ring, know the opening size of the...
Just a few weeks ago, I posted that it had been 25 years since I became the ‘new’ owner of Air Flow Inc. If you’ve followed any of our social posts and videos, you know that founder Al Gelin passed away in a plane crash in 1995, and founder Neil Drees from cancer in...
I thought I was alone on the quest to research and teach folks about duct and system leakage. Turns out I’m not alone. Meet Mark Mahon, Business Development Manager for Price Industries and all-around great guy. (Nerdiness never prevented likeability, did it?) A...
“I have an $800 diffuser to sell you.” “Hello?” Some discussions end before they begin. On the subject of designing around electronic VAV diffusers, the discussion is usually over before it starts. No problem. 15X the cost of something that works is a challenge for...
Our next training session is about room comfort. Upcoming posts will more directly address that topic. Meanwhile, I notice that 60 Minutes has a piece on HVAC and air quality. The piece aired Sunday, October 29th and was called ‘The Air We Breathe’. Oh my gosh, our...
