metal filters

[dfwdiesel]

MPHA used metal filters because there was no way anyone living the houses was going to buy or replace filters. The metal ones would get plugged up enough to trip the high limit, I would come out, clean them, then put them back in. They didn't have A/C in any of the houses and the metal didn't stop a whole lot of anything, so they only needed to be cleaned once a year or so.

I would imagine they kept you in hours

[subcooled_]

I would imagine they kept you in hours

I worked for an independent HVACR contractor for MPHA. I often worked over 40hrs. Their internal maint. staff (the guys who would jump high limits) were under strict orders to not work over 40hrs.