the problem is in 5 stories 50 unit condo. basically the zoning valve is leaking from underneath the piston and I am unable to turn on heating (water). I suspect the part needs to be replaced. anybody knows approximate cost for parts and labour ? Chicago, IL
https://picasaweb.google.com/107560...hkey=Gv1sRgCJTA7tj3yY-VXw#5692793676223692914
https://picasaweb.google.com/107560...hkey=Gv1sRgCJTA7tj3yY-VXw#5692793676223692914