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”

Heat Pump Reversing Valve 101

  The reversing valve; the second most confusing part of a heat pump (Yes, the defrost board still holds first place for the most confusing part) So, what’s the confusion about heat pump reversing valves? The confusion is understandable; a

Posted in Heating, It's Technical Tagged with: , , ,

Good news! Skilled trades are in demand! Question: does anyone care?

In Emily Prieffer’s article, The construction industry’s top workforce challenge — and 3 potential solutions, she found that 69% of general contractors are having a tough time filling craft positions. While the article is based on the construction industry its close relative, the

Posted in Business Operations, It's Business, Uncategorized Tagged with: , , , ,

Ammonia a 19th Century Solution to a 21st Century Problem ?

sometimes, the answers to the questions aren’t necessarily new. This week Kathy Jackson brought us her thoughts on a new / old solution to an relatively recent issue.

Posted in Cooling, Uncategorized Tagged with: , , ,

The Future of Your Business is Directly Related To Your Workforce

…no matter how well you run your business, no matter how well you project the next quarter’s sales, no matter how well you train your technicians, it’s over in 10 or 20 years.

Posted in Business Operations, It's Business, Why Didn't I Think of That Tagged with: ,

Twenty Years of Experience…One Year at a Time

There are 1st year HVAC technicians with 20 years of experience under their belt….and there are 20-year HVAC technicians who have 1 year’s experience under their belt….20 years in a row…don’t be that guy. Your time in the trade doesn’t mean

Posted in It's Humor, It's Learning Tagged with:

Cooling Towers Part 2: Measuring Performance with Range and Approach

There are two terms you need to understand if you want to sound somewhat competent when describing a tower’s performance: Approach and Range. Range is the temperature difference between the inlet water and the outlet water. The formula is EWT

Posted in Cooling, It's Technical Tagged with: , ,

Cooling Towers Part 1: Basic Concept

One of our devout readers suggested we toss together some posts about cooling tower basics, maintenance, and troubleshooting. My first thought was- Good idea! My second thought was, why didn’t I think of that? Cooling towers are like air handlers

Posted in Cooling, It's Technical Tagged with:

Control Board Troubleshooting- The Ins ‘n’ Outs

Electronics work just like you do; they determine what’s happening by looking at inputs like temperature and pressure, and decide what to do based on what they “see”. The only difference between your brain and electronics is you use your

Posted in Controls, It's Technical, Tricks & Tips Tagged with: , ,

Control Board Fails

Control Boards rarely fail, they’re usually misdiagnosed or murdered. When control boards do fail it’s normally an output contact failure caused by age or an electrical surge like lightning or a technician shuffling across carpet before touching it. It’s a

Posted in Controls, It's Technical, Uncategorized Tagged with: , ,

The In (puts) and Out (puts) of Control Boards

A Control board looks at inputs and generates outputs based on the inputs it sees. That’s it. Let’s put this in perspective- Input= you hit your thumb with a hammer. Output= you swear. If the input doesn’t happen (hammer hitting

Posted in Controls, It's Technical Tagged with: , ,
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