Posted 2/18/2017 07:52 (#5847432 - in reply to #5847408) Subject: RE: Adding water to in floor heat system
NW Iowa. / SW Arizona
I should've noted in my earlier post this is exactly how my floor system is plumbed. It is connected to a constant water supply with a check valve so the anti-freeze mixture can't come back into the water supply line. So even though I've never personally have ever had to add to it, it might've done it automatically itself.
Adding water to in floor heat system
