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Micaiah HVAC/R Evacuation Quiz June 13, 2021, 7:00 am
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Does Refrigerant Get Old or Wear Out?
Over the years, I have heard technicians say that refrigerant can wear out or “lose its blend” by sitting in a tank. Refrigerant does not wear out or “lose its blend”… at least not like that. What can and does happen is called “fractionation.” Refrigerant blends are composed of a mix of refrigerants with different […]Read more
Properly Deburring (Reaming)
Deburring copper tubing (often called reaming) is the practice of running a blade around the inside of tubing after you cut it to remove the burr edge from the inside. It's an important practice and should be performed whenever possible. Deburring reduces turbulence inside the lines, as burrs can cause turbulence. HOWEVER… YOU MUST MAKE […]Read more
Take a Deep Breath: Respiratory Hazards in HVAC
DISCLAIMER: HVAC School is NOT an official OSHA safety training resource! Although we provide safety tips in good faith, our website is not a substitute for safety training from an authorized OSHA training source. When most people think about respiratory devices, their minds probably jump to soldiers wearing gas masks in warfare, hazardous waste […]Read more