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Boiler calculation - new rads

What is the name of the calculation/specification/rating for how many radiators you can run off a domestic combi boiler?

Then, once I know that, does anyone know how I can calculate the rating of my existing rads to see if I can add any more to the system.

Many Thanks

Comments

  • A.Penny.Saved
    A.Penny.Saved Posts: 1,832 Forumite
    Part of the Furniture 1,000 Posts Name Dropper Combo Breaker
    Add up the power output of all the radiators and providing the total is lower than the boiler heating power output then you should be okay.
  • sk240
    sk240 Posts: 474 Forumite
    100 Posts
    Being a combi, its probably got loads of heating headroom, they are very powerful to give a high hot water flow.
    But as stated, measure all of your rads, add up all of the outputs and check on the spec of your boiler to see if its enough.
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