No personal experience with 'em, but Motivair builds a heat recovery chiller that looks pretty good. Looks can be deceiving. I started a HR centrifugal that York built a few years ago that took the place of a Trane HR machine that never worked. The York didn't work, either.
Do you mean heat recovery or a pressurizer for leak checking?
Low Pressure Forever!
If you know heavy metal, you can work anywhere-Dave Andreson
Anchors Aweigh my boys, Anchors Aweigh!
Farewell to foreign shores, We sail at break of day. Through our last night on shore, Drink to the foam. Until we meet once more. Here's wishing you a happy voyage home!