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Just had a quick read of the regs, Im on my phone so bit difficult to take it all in. So if I'm right, you can fit heating off the circs, providing its individually controlled(which UFH and a rad would). Also basically you have to keep the existing doors between the dwelling and the conny...

Well you learn something new everyday. So what are the additional budding regs required to fit a rad? Most descent conny fitter would have fitted 100mm kingspan in the floor as a minimum. With regards to selling, if you have fitted a rad/UFH without BR approval. Nothing to stop the seller...

So you want to replace your current cylinder with a twin coil cylinder and heat it indirectly from your gas boiler and stove? What output is the stove circs rated at? I would fit a separate F&E tank in the loft which would feed the stove circs. Run the existing hot water circs to one...

Is that right with regards to fitting heating in a conservatory? Don't suppose you have a link to the reg do you? Or is that just if it's not going through building control? We usually fit UFH and a backup radiator, dependant on size.

Uponor is a very good brand. I'd also consider poly plumb

If that hexagonal nut in the meter chamber turns both houses off, then that meter is providing BOTH properties. Ask your neighbour to run a tap and check the meter to see if it's moving. If it bothers you that much then it would be cheaper to pay for an internal stop cock to be fitted at...

Simples, get your self a sheet of 9 or 12mm mdf, cut it the same height as your brackets and the full width, bracket to bracket, grip fill lines on the Back And screw to plaster board and studs in a minimum of 8 points. Fill any holes, undercoat/paint or wall paper. Hang rad as you would job done

Viessmann vitoden 100w. Hard to give a price without a survey, but I would say in the region of £1800-1950

You may also find that you get a drop in water pressure in the hot feed to the bath etc. I would recommend you change the pipework to 15mm. I cant understand why you don't want to use an immersion and tank?

spot on

Mr hailsham, if that's the case with your timed hot water, then you may swell deduct another 2kw off your boiler size then seen as it's not used when the heating is on?

And why did you edit the middle line? Were not talking whole installations here, were talking a new boiler only !!!!!!!! How many 3 bed houses have you been to with 36x18 cylinders in? 1 Bath and its gone!!! Cos ive been to loads....

I did not say i dont understand it did i? I did not say i wont accept it either.... What i am saying is that the majority of customers, still cannot fathom that its cheaper to leave the heating on and runit in set back.. Same goes for HW, its cheaper to have it trickling i agree... But what...

Which is why im suggesting he uses the 200w with weather comp... You cant go wrong. 5 bed house is gonna use more that 8kw. Also its still hard to get customers to leave the hot water trickle charging so to speak.. They still think 2 hrs on is best.. Same goes for heating

I would never only allow 2kw for HW, advice or no advice... I allow 8-10kw minimum on a 3 bed house with say 1 bathroom, kitchen etc. It all depends how many people live at the house/ life style etc. Like ive said the boilers are modulating so it will ramp down anyway. And were not...

I appreciate that, but thats more new generation housing and not current. With the new generation, thats where heat pumps with solar HW and the likes will come into play. Older houses are alot more in-efficient as we know. Also this guy is heating a cylinder too, so there could be anything...

Very amusing tho.. Im happy with him lol

My Bad its 8.8kw @50/30 & 8kw @80/60 on the 35kw 19kw comes down to 4.8 & 4.3. Never the less the 35kw would still be fine in most installations...

I disagree there mate the 35 viessmann for example will modulate right down to 5kw so as long as his output is greater than his input then he will still benefit, especially if he uses weather comp. Gareth

Read my answer again. !!!!!