“It sounds very fancy, but it's really the HVAC of the spacecraft — controlling humidity, temperature and the whole atmosphere onboard.” — Manuel Retana, NASA Project Manager, ECLSS Artemis II  |  University of Nevada, Reno, April 2026 A NASA engineer who spent five years building the life support system on the Artemis II spacecraft name-dropped […]

There are many appliances with compression refrigeration circuits that do not have ports installed for testing, recovery, charging, and evacuation.  These can include window units, PTACs, fountains, refrigerators, and much more. This fact presents a challenge any time you suspect or know there is a refrigerant circuit issue. How can you diagnose and repair when […]

When we say that there is “flash gas” at a particular point in the system, it can either be a bad thing or a good thing, depending on where it is occurring. Flash gas is just another term for boiling. It is perfectly normal (and required) that refrigerant “flashes” or begins boiling directly after the […]

Ryan Gorman comes on the podcast to discuss the differences between a college education and early career opportunities in the skilled trades. Many parents feel pressured to send their children to college and encourage them to get a four-year degree. Despite what society may lead us to believe, there is no shame in thinking that […]