Dune
Senior Member
Electronic type...bewildering number of units out there...from 15 bucks to $350. My jackleg HVAC guy found a leak with an electronic unit that the bubble spray didn't find.. and I wonder what he used ? (he doesn't remember, as he borrowed it ! ) I'm talking leaks so slow that take months to show up as low pressure errors on a 10K btu Cruisair unit.
