Fresh Air System Info Needed

I am not sure if you read this post of mine but it describes the fresh air system I have used for a long time. I use a full face piece mask made by Pulmosan. I don't think Pulmosan exists as a name anymore but others make similar products. I got it 25 years ago for about $180 as I recall. It is similar to this one:

The dedicated compressor I use is a Campbell-Hausfeld 1hp "Super-Pal" that is also 25 years old. It is an oil-free, tankless, 115v unit that I don't think CH offers anymore but there should be similar ones available. My biggest complaint with my system is the extremely loud noise of the compressor. It's annoying but something I put up with since I do not use it often. As I remember the compressor cost about $150 back then.

Going this route will cost about the same (if not more) than the Hobby-Air turbine type system that you can now buy commercially. These were not available back when I put my system together.

Caveat: If you look into the compressor route, do NOT go by hp rating. Current methods of hp rating for compressors under about 10hp can be extremely deceptive. For a facepiece you need to supply at least 4 cfm and for a hood, 6 cfm. Those are the numbers that are important, not the hp. Also if you have to wear glasses, go for a hood arrangement instead of a facepiece. Eyes need protection also.

Rod