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wallsushi0
@wallsushi0
https://postheaven.net/prisoncomma9/hvac-tricks-and-tips-you-should-know
https://canvas.instructure.com/eportfolios/1585412/Home/HVAC_Tricks_And_Tips_You_Must_Know
https://controlc.com/266aa6a5
If you work in the HVACR business, you have probably heard that the US Clean Air Act and the Environmental Protection Agency (EPA) are calling for the gradual elimination of all ozone-depleting refrigerants. This includes the most commonly used , HCFC R-22, which