It looks like my McDonnell No. 67 low-water cutoff is trying to give up the ghost. (My system overfills with water, I adjusted the pressure downward to see if that helps. ) Any suggestions where to go (I’m in Chicago) for a good installed price from someone who knows what they’re doing? My boiler is a HBSmith G300S, if that helps. Also, any recommendations for replacement vents – most of the ones I have are Dole but I’ve heard that VentRite and others are good. Thoughts?
Thanks for any and all help.