Y or S Plan - Performance Issues

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Does anyone have any details on performance with regard to Y and S plan systems?

I don't know why, it just looks like an S plan will be the better performer - this is of course without the benefit of a degree in thermodynamics.

I know that there are some real brain boxes on this forum - so, please don't be shy :)
 
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Depends on the size of the property, but generally an S plan is the best bet.

With an S plan you can have multiple zones that are individually controlled, by their own stats, an obvious saving for areas that are not used or at a lower temperature, e.g. bedrooms and guest rooms.

Another advantage is, it meets the new energy regs, and the VAT is only 5% on all controls, so now is a good time to grab some of Browns money, before he changes his mind :LOL:
 
If you look at the Kv's for different types you might be surprised. In other words the resistance of a 3 port can be the same as a 2 port. Varies with maufacturer.
COmparing figs for 22 vs 28mm sizes is similarly disappointing. But not surprising when you see they use the same balls and apertures inside some of them.
 

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