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Does Air or Nitrogen Absorb Water?

There are many examples of teaching using metaphors to help someone grasp how something works without being EXACTLY corr

Using Heat & Nitrogen In Vacuum

In these tips and on the podcast, we talk a lot about the importance of deep vacuum. Pulling a deep vacuum using proper

Start Flowing Nitrogen Sooner

My technician (and brother-in-law), Bert, made a good point. (It's hard for me to admit it, but it's true.) When he need

Sweeping with Nitrogen

Two days prior to this article being published, I sent one out about the popular fallacy that nitrogen “absorbs

How (and Why) to Flow Nitrogen While Brazing

When I started in the trade, the idea of flowing nitrogen while brazing was nothing more than the punchline of a joke. L

Non-Bleed TXV & Trapped Nitrogen

The following is based on a true story. No product was harmed in the making of this tech tip, and some facts may have ch

Triple Evacuation and Nitrogen FACTS

This article was written by longtime contributor and RSES CM Jeremy Smith. Thanks, Jeremy! Nitrogen doesn’t absorb moist

Does Nitrogen Pressure Change with Temperature – Practical Application of Gas Laws

The gas laws. We all learned about them in school and promptly forgot all about them. I really think that we need to dig

Best Practices to Conserve A2L Refrigerants in a Shortage

If you own your HVAC company or are involved in management, you may have realized that our industry is currently facing

Living in a World of Acids (and why HVAC coils are secretly crying for help)

Imagine a small IT room packed with servers, monitors, and humans. CO₂ levels easily spike to over 3000 PPM since the ro

HVAC/R Refrigerant Cycle Basics

This is a basic overview of the refrigeration circuit and how it works. It isn't a COMPLETE description by any means, bu

What is a HSO (Non-Bleed) TXV/TEV?

There is a lot of misunderstanding about the HSO (hard shut-off) or “non-bleed” TXV (thermostat expansion va