What You Need to Know About Future A2Ls with Don Gillis & Christian Pyles 

You had me at Don Gillis! Great trainer

This information is invaluable!!!

Don! You are awesome Brother! Let’s get a beer! This was my 2nd Seminar this week. The last was from Bobby Dean!

Thanks for the information and video

R-32 or 454B... as a homeowner given the choice which one should I choose and why assuming all other specs on both units are identical?

@bdfsystem it has to do with ignition source. Your old vacuumpump might not have good enough isolation against sparks in its electrical system.

Michigan watching still.. @HVAC School whats up with Brian Orr ?

Does anyone know the orifice sizes of A2L?

So the question here is... Can I use my existing vacuum pump on A2L's? If no,why would I need to get special rated equipment when operating pressures are close to 410a ,and all my equipment its 410 rated so why would I need to change my equipment?