Equipment Sizing and Airflow in Different Markets
This tech tip was heavily informed by Ed Janowiak’s past symposium presentations. You can watch his presentation about setting proper airflow HERE. You can also now purchase your tickets for the 6th Annual HVACR Training Symposium HERE. HVAC School was founded by a Floridian—representing Climate Zone 2, to be exact. So, it’s no surprise that […]
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Universal Condenser Fan Wiring Options
By:JD Kelly Assessing the Situation It is fairly common for a service technician to come across a failed condenser fan motor in the field. It doesn’t matter if we are talking about really old or fairly new equipment—condenser fan motors sometimes fail. The issue is deciding whether to use an OEM (Original Equipment Manufacturer) or […]
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New A2L Refrigerants – “Easy as ABC”
By:Dr. Chuck AllgoodThis tech tip was written by Dr. Chuck Allgood with Chemours. Thanks, Dr. Chuck! While the ever-evolving world of refrigerants can often seem overwhelming with what seems like a never-ending parade of new gases being developed, taking a simplified approach may help clear the clutter. It can be as easy as A, B, […]
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Combustion Testing Doesn’t Stop in the Summer
By:Casey ContrerasThis tech tip was written by Casey Contreras. Casey is a field coach and instructor for the National Comfort Institute (NCI). Thanks, Casey! As HVAC technicians, our careers often focus on either cooling or heating. Because of this split view, we typically ignore gas-fired appliances during the cooling season. There are dangers lurking in […]
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Reviving History: Upgrading an 80-Year-Old Steam Boiler in Portland, Maine
By:Jennifer Manzo This tech tip was written by Jennifer Manzo. Thanks, Jennifer! As an HVAC technician in Maine, I've seen my fair share of aging systems, but nothing quite prepared me for the sight that greeted me while responding to a “no heat” call in a multi-family apartment building this winter. Stepping into the boiler […]
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The HVAC Technician’s Guide to Ensuring Comfort: Lessons from a Real-World Experience
By:Luke PetersonThis tech tip was written by Luke Peterson, the president of The Maintenance Department in Louisville, KY. Luke was a speaker at the 5th Annual HVAC Training Symposium in 2024 and has been on HVAC business panels at the symposium in 2023 and 2024. Thanks, Luke! As an HVAC technician, your primary goal is […]
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Which Hose Do I Use?
By:Bryan OrrThis tech tip is a companion piece to a recent short podcast episode about the same topic. It contains links to the specific products mentioned in that podcast. You can also learn more about NAVAC products as a whole at Our trade has a lot of cool tools. But while we’re thinking about […]
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Realistic Summer Triage Strategies
By:Bryan OrrThis tech tip is a companion piece to a recent podcast with Kevin Hart from HAVEN. We’ve already had some record-breaking heat here in Florida, and that’s translated to an overwhelming number of calls. We know our HVAC brethren in other areas have been working their tails off all the same.  Going without air […]
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Mounting the TXV Bulb
By:Bryan OrrThis is a quick tip from the “Expansion Valves – What Does and Doesn't Matter?” livestream on our YouTube channel featuring Joe Shearer, Matthew Taylor, and Corey Cruz. Thermostatic expansion valves (also known as TXVs or TEVs) don’t have little brains that tell them when to open or close to maintain a specific superheat. […]
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