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Yellow Jacket products now available Posted by TruTech Tools, November 17th, 2023 FREE SHIPPING ON ALL ORDERS $49+ Yellow Jacket products now available at TruTech Tools! We are thrilled to share some exciting news with you—TruTech Tools is now an official distributor of Yellow Jacket HVAC tools!  Why Yellow Jacket? Yellow Jacket is a name synonymous with quality, durability, and innovation in the HVAC industry. With a rich history dating back to 1950 …

TruNews - November 2010Good seeing youOn top of regular phone contact, we have been on the road the last two months and met with many of our customers. It is exciting to hear your stories: the challenges and the successes. Keep in touch: we offer our talents, experience and skills to help you succeed!.Your Most Valuable Asset - What you knowTruTech Tools focuses on building your knowledge and skills. We can't help it. It's the way we're made.TruTech Training Live Webinars  Combustion 101: …

Benefits of proper system setup through testing Whether working on gas, oil, coal, or wood fired appliances it is imperative to perform a combustion analysis during routine service, or any time changes are made that will affect the combustion process.  This can be as simple as adjusting an air shutter, changing gas pressure or as involved as changing an oil nozzle.  A combustion analysis is performed for five primary reasons:    To verify the safety of the appliance …

Testo 550 Common Questions and Answers   Table of Contents 1.     The up and down arrows do not do anything, what am I doing wrong? 2.     Do I have to re zero the instrument every time that I use it? 3.     Why does the superheat of subcooling calculation show  ------ 4.     I only purchased one probe with my 550, how do I switch from superheat to subcooling? 5.     Why doesn't …

See what the Manufacturer's of B-Vent have to say about combustion testing.The linked letters below were pulled together in 2002 by Bob Dwyer (formerly Manager of Training at Bacharach, Inc., now with COSA.See the letters here: www.Bit.ly/B-Vent …

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  So what does the Testo 550 do better? Higher accuracy, the Testo 550 has 2-3 time the accuracy of analog gauges and does not easily go out of calibration No need for a temperature pressure chart, the Testo 550 calculates saturation temperatures for every common refrigerant Real-time superheat and sub-cooling. The 550 will calculate superheat and sub-cooling on systems when they are unstable like periods of low load. Because it tracks changes in real time it is easy to see m …

Combustion efficiency is a measurement of how well the fuel being burned is being utilized in the combustion process. This is different from the efficiency number produced on the analyzer, which is reflective of the total amount of heat available from the fuel minus the losses from the gasses going up the stack.   Stack loss is a measure of the heat carried away by dry flue gases and the moisture loss. It is a good indicator of thermal efficiency. The stack temperature is the temperatur …

FREE Combustion safety Webinar. Details are hereRESNET or BPI CEUs for a small fee after test.

In my twenties, I spent a lot of time doing service calls in some of the tallest buildings in downtown Baton Rouge.  Some of the mechanical rooms inside these buildings are a sight to see.  They are full of heavy industrial equipment from pumps to chillers and steel piping everywhere!  Have you ever been in a large commerce building that is vacant?  It can be a bit eerie and creepy quiet.  This is the same feeling I would get when walking into a basement floor mechanica …