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To Glass Ceilings And Those Who Lend Us Their Hammers
Two Tips for Tough Vacuum Jobs
Is Value Perceived?
What to Do with Your Micro-Manometer
Ventilation Strategies: ERVs, Dehumidifiers, and More
How Do Communicating Systems Work?
Manual J Field Data: Windows
Troubleshooting 90%+ Gas Furnaces
Practical Uses of Combustion Analysis
History of Gas Furnaces – Redux
Heat Exchangers and Temperature Rise – Short #227
Manufacturer Responsibility – Manifesto
Q&A – Tips for Moving to HVAC Sales – Short #226
White Shirt Techs – Manifesto
Q&A – Double Flares – Short #225
Can You Coat Fiberglass?
Redux – The Lost Art of Steam Heating w/ Dan Holohan
Q&A on Superheat – Short #223
#hvac
Tech Tips:
This tech tip was written by Jennifer Manzo, an HVAC technician and the founder of the HVA-Chicks coalition, which offers tech support and training as well as resources for women in the industry. She was one of our panelists on this year's Women's Panel at the symposium and was recently featured on a livestream and […]
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In the last year or so, I have had a couple of puzzling experiences related to pulling a vacuum. These instances have left me with questions and clues where I thought I had given up on understanding a certain vacuum situation. Typically, if I’ve had a hard time achieving a proper vacuum, I would be […]
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The other morning, I was scrolling through HVAC Facebook groups when I came across a post from a homeowner. He was requesting recommendations for a book that would teach him how to design and install a new HVAC system, complete with ductwork, in his home. Immediately, my HVAC career flashed before my eyes like a Christian reliving […]
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Imagine this: you are pulling into your driveway from a long day at work, and you see a package waiting for you on your porch. You jump out of your truck and trip over the rose bush while running to see if this is what you have been waiting for. Upon closer inspection, you realize that the […]
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This tech tip recaps the livestream by the same name, featuring HVAC School contributors Matt Bruner and Adam Mufich, as well as special guests Corbett Lunsford and John Semmelhack. You can watch that livestream on our YouTube channel HERE, and you can learn more about the great educational opportunities Corbett has to offer at https://buildingperformanceworkshop.com/. […]
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This tech tip recaps the livestream by the same name, featuring HVAC School contributors Matt Bruner and Adam Mufich, as well as special guest Steve Cook from Hisense. You can watch that livestream on our YouTube channel HERE. We also owe special thanks to Roman Baugh, who added some extra information on the topic. Communicating […]
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A manual J load calculation will require you to input the U-value for the windows or “fenestrations” on the house. Fenestration is a fancy construction word for window. Figuring out the U-value and SHGC of a window on an existing home is very difficult. But first, let’s dive into what the terms U-value and SHGC […]
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This tech tip recaps the livestream by the same name, featuring HVAC School contributors Matt Bruner and Adam Mufich and special guest Ty Branaman. You can watch that livestream on our YouTube channel HERE and visit Ty’s at https://www.youtube.com/@love2hvac. While 80% gas furnaces are relatively commonplace in the Southeastern United States, where HVAC School is […]
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This tech tip reviews the live stream by the same name aired on November 1st, 2023. You can watch the full live stream HERE. We want to give special thanks to the guests: Jim Bergmann, Jim Davis, Tony Gonzalez, Louise Kellar, Bill Spohn, and Tyler Nelson! Gas furnaces (or any combustion equipment) create a controlled […]
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Videos:
Podcasts:
Jim takes us all the way through the history of furnaces, from the Stone Age when he was a child to modern modulating condensing types. The goal of a furnace is to move heat, so a furnace uses heat exchangers to facilitate heat transfer. Furnaces have primary and secondary air. The primary air goes […]
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In this short podcast episode, Bryan talks about heat exchangers and temperature rise in gas furnaces, especially 80% open-combustion gas furnaces. Temperature rise is the difference between the return air temperature and supply air temperature; in cooling, we usually refer to this difference as a delta T or temperature split. The manufacturer sets a […]
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In this episode of the HVAC School podcast, Bryan shares his “Manufacturer Responsibility Manifesto,” a document he wrote over two years ago but held back from publishing until now. The manifesto addresses growing concerns about the burden being placed on HVAC contractors, particularly smaller businesses, due to manufacturing quality issues and warranty policies. The […]
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In this short Q&A podcast episode, Bryan answers a listener-submitted question and gives some of his tips for moving to HVAC sales from field technician/installer roles. The world of sales has a different pay structure, which makes it an appealing option to many technicians. Salespeople need to be able to have money conversations with […]
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This unique podcast episode is a commentary on the phenomenon of “white shirt techs” in the HVAC industry – a term that refers to technicians who focus heavily on sales and maintaining a pristine appearance rather than technical expertise. While there's nothing inherently wrong with having good sales skills or maintaining a professional appearance, […]
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In this short podcast episode, Bryan answers a listener-submitted question about double flares and their application in the HVAC/R industry. Flare connections are common in certain types of equipment, and they connect the copper to the appliance. As a result, when we make a flare, our goal is to make it leak-free. A regular […]
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In this episode of the HVAC School Podcast, Bryan interviews Zach about duct coatings and their applications in HVAC systems, particularly focusing on the Hardcast RE500 product. The discussion delves into the importance of proper duct coating applications and their benefits for both contractors and customers. Zach, who has extensive experience in duct cleaning […]
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In today's podcast, Bryan talks with legendary Hydronics author and trainer Dan Holohan about the history of steam heating and some practical applications of old ideas. Recently, Dan has been working on more novels, having published two of them over the past few months. Steam heating is a “lost art” nowadays; it has become […]
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In this short Q&A podcast episode, Bryan answers a listener-submitted question about superheat, including what it is and how we measure it. Superheat is the number of degrees a refrigerant is above its saturation point. The saturation point is where you will have a liquid-vapor mix, so superheat only exists when a substance is […]
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