hot water boiler

I have a hot water cast iron radiator system. It has separate supply and return pipes. My kitchen had slant fins that never got warm. I do not want to rehash that issue. The kitchen had not seen heat since at least before 1998 I recently learned. In a desperation to troubleshoot I cut the 3/4...

A bit of a theoretical question as our SEER 16 a/c system is ok. Big old 3 story + basement 3800 sf house. Western PA. Heat is new Weil-McLain EVG-220 hot water system with big old rads all over the house. 2 central A/C systems - first floor system & 2nd/3rd floor system When the 2nd floor...

I have an original 1914 coal fired (converted to gas) boiler that runs my gravity hot water heating via cast iron radiators. I have a pantry, and and a small breakfast room off of the kitchen that are currently unheated by the main boiler. The pantry is roughly 4’x9’, and the breakfast room is...

We have a Navien NB-240 with the Heating set at 82C and DHW set at 45C. When we run the hot water, the first minute or two comes out scalding hot. After that, it goes to the set temperature. Even when we lower the DHW temp the first minute is still the same. Any ideas? Thanks!

My brain teaser is this: a 60 year old boiler heats 4 one-bedroom apartments and does a fine if inefficient job. However one bathroom has always been cold, so I added two 1/2 inch copper lines, supply line is about 15', to feed a new hydronic kickspace heater. All existing lines from manifolds...