I am thinking of changing all my cast Iron rads in the house to Stelrad rads.
It is my understanding that in doing so, the water temperature needs to also be increased, but I am unsure as to what is the correct temp.
If anyone can chime in on the topic it would be great.
Also does anyone know the formula to calculate the BTU/h of cast iron rads? In doing so it would help me figure out what size Stelrad i should be buying to get the same btu/h as the cast iron ones.
Essentially how does one calculate the correct size stelrad to purchase to replace a cast iron rad ?