We're about to start an extension & other work on the house and will be adding 4 new radiators. I need to find out if our boiler has enough spare capacity to cope with these extra rads. Can anyone tell me how to work out the capacity required and how to figure out te existing capacity of the boiler.
I have looked through other threads but could not find anything along the lines of a formula for working this out.
Thanks
I have looked through other threads but could not find anything along the lines of a formula for working this out.
Thanks