Welcome! Here are the website rules, as well as some tips for using this forum.
If you've found help here, check back in to let us know how everything worked out.
It's a great way to thank those who helped you.
Hot water heating system problem
I recently replaced finned aluminum to cast iron but when I turned on the heat to test, it was not getting hot. I have a mixed finned and cast iron hot water system where the other units were getting hot but not the ones I replaced. I have one supply and one return system on boiler but don't know rest of piping as it's in the walls. House was built appx. 1950. Any ideas? Thanks.