Whole new heating/hot water system for my house (see pics)

getmore4less

Hoploz wrote: »

If the tank is down in the garage then I think you'd need to have one of these new systems rather than a traditional hot water cylinder with header tank - best if the copper cylinder on old fashioned system is not two storeys below

With gravity fed it is the head and pipe runs that effect the flow, a tank in the garage would have short hot runs to the kitchen and current bathroom/ensuite(possibly shorter than the current tank position.

A wider bore cold feed pipe from a header(in the loft) to the tank would probably not restrict flow any more than the current run.


If the mains is up to the job that would be the way to go anyway,
Gut the existing piping and start again.

The other alternative for a gravity fed system would be pumped for quick fill bath/showers, something like one of the Aqualisa units.

fezster

I have my megaflo in the garage, and it's worth keeping in mind that the farther it is from your hot water outlets, the longer it will take the water to reach them (so more wasted water).

I'd recommend making sure all of your hot water pipes are insulated. If the distance is quite large, you can look into a hot water return (a loop which is pumped with hot water during peak times to give you water quicker at the outlets).

With an unvented cylinder it's all mains pressure driven, so being in the garage is not a problem. But you will lose 1 bar of pressure for every 10m in height you go up, which usually equates to about 0.5 bar lost in the first floor bathrooms. Not a big deal if your incoming pressure is > 2 bar.

getmore4less

Looking at the layout I think I would go B4 to bathroom and do the ensuite thing

That would have the main beds all in the same wing

leaving B4 as spare/guest/study

if going open plan kitchen diner could capture some of the hall space

The decoration is quite unusual, the pink hall doing nothing for me.