A central heating system that transfers heat from a boiler to each room through a fluid filled plumbing system.

learn more… | top users | synonyms

3
votes
1answer
3k views

What does C, W, Y and S Plans mean when talking about central heating controller?

I have seen control systems sold as C, W, Y, or S plan, what the difference? Are there any other common setups (These are water based CH systems, so are unlikely to be used in the USA)