Author: Patrick Peterson
Patrick is Zen HVAC’s diagnostic and training guy. Patrick started in the trade the day he left technical school and never looked back. He's served in various technical and training roles in the HVAC industry but specializes in system troubleshooting and diagnostics, retro commissioning, and technical training. His moto: If I can understand it, anybody can. Patrick uses the Zen common sense approach to teach Patrick’s Likes- His Wife, kids and dog. Old pickup trucks. Hiking. The industrial Revolution. Patrick’s Dislikes- Taking work too seriously. Anything unintuitive. Emoticons :( Patrick’s Favorite famous person- Theodore Roosevelt “I am only an average man, But I work harder at it than the average man" Famous Patrick Quote- “Well, that was stupid of me”

Less Than Credible Online Buffoons

Warn your customers not to blindly follow advice found on the internet; you’ll be doing them a favor, and possibly saving their life.

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Top Causes of Propane Sooting

What causes sooting? Why are some units’ chronic sooters? More importantly, how do you stop the @#$%&* sooting?

The root cause is one (or more) of the three problems below, and the root-cause/s of each described in the second list.

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Optimists Need Not Apply; Embracing Your Negative Side.

If you’ve been in the HVAC service industry for more than 5 minutes you’ve probably noticed the really good technicians are some of the most miserable, grumpy SOB’s you’ve ever met.

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Heat Exchanger Failure # 4 – Firing Rate.

How can firing rate affect heat exchanger longevity? If the firing rate is too low, its that same as having low return air temperatures (RAT). Condensation will form, mix with the flue gas and cause corrosion. A high firing rate

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Heat Exchanger Failure #3 – Air Flow.

How can air flow cause a heat exchanger to fail? Too much airflow causes the heat exchanger to run cool causing condensation to form inside, and if you read the previous articles you know what that means.   (If you

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Nothing says winter has arrived like a failed heat exchanger…- Part 2; the RAT.

How does low RAT kill a heat exchanger? It cools the heat exchanger, in-turn causing the flue gas temperature to drop below its dew point.

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98 degrees and 100% Stupidity

Commit these two truths to memory-

“Confidence without knowledge is dangerous”
and
“Knowing what you don’t know is power”

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Nothing says winter has arrived like a failed heat exchanger…

Unfortunately heat exchangers are like everything else in our industry; few die of natural cause, most are murdered.

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TECHNICAL LANGUAGE TRANSLATOR

There is a significant language barrier that has been frustrating attempts at developing a unified team atmosphere between technical and sales / marketing people. This translator was developed to help overcome this communication barrier. Please read and familiarize yourself with this robust document.

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Zen’s take on the Fluke T6-1000: It’s the Shiznick

A non-contact fork style meter that measures voltage and amperage at the same time. WHAAAT? Check it out and tell ’em the folks at ZenHVAC sent you. (Note: this and two-fifty may get you a coffee…not a latte, grande, crappy,

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