Mike PleziaInside service technician, Clark Associates · Commercial Equipment, HVAC, and Refrigeration professional

Don't Jump to Conclusions

21 Apr 2026 · 1 min

Watch on YouTube

1:05

In this short YouTube video, a tradesperson warns newcomers to the trade against making snap judgments when diagnosing equipment problems. He recounts a recent service call on a commercial gas range that was overshooting temperature. Initially convinced the thermostat was faulty, he prepared a replacement part, but before swapping anything he cleaned the burner and cleared a clogged orifice that was restricting airflow. The lack of oxygen caused the temperature overshoot, not a bad thermostat or burner. The speaker uses this anecdote to illustrate the importance of verifying the actual cause before replacing components, encouraging viewers to adopt a methodical troubleshooting approach and share the lesson with others.

Chapters

If you're new to the trades, it's easy to jump to a conclusion. I mean, think about it. You see a symptom, you recognize the pattern, you think you know exactly what part has failed. You know, earlier today I went on a service call on a gas commercial range. It was overshooting temperature, and I was certain that it had a bad thermostat. I even Found the part number, had it ready to go. But before I changed anything, I cleaned the burner and cleared the clogged orifice. The burner ports were just restricted. It wasn't getting enough oxygen, and that's all the problem was. The thermostat wasn't bad. The burner wasn't bad. The system was just dirty. It's a good case in point to remember. Always verify before you replace and pause before you change that part. Now that you know, you can help someone else know.