New Build Mains Water - Pressure Tank Advice

Spawky

Hi all,

I'm having construction drawings done for a new build, which will connect to mains water. We have been advised by some people not to put a gravity fed water tank in the attic (due to risks of it ever leaking), and instead fit a pressure tank in the garage, with our planned Ecowater water filter.

Can anyone in the know help us with a few questions we have on the use of a pressure tank as opposed to a gravity fed water tank in the attic.

1) Does anyone know where to find appropriate pressure tanks for this setup.
2) Do we need a pump to fill a pressure tank? All videos I search about them mention needing pumps to pump water from a well. In our case if we have mains water filling this pressure tank (first passing through the water filter I assume), do we need a pump at all?
3) Do they have enough pressure to actually "push" from an external garage, to say an upstairs cold tap without a pump?

Any advice would be great to help us decide what type of water tank to go with here and what pumps if any.

gctest50

You need to search for :

break tanks


https://www.google.ie/search?&q=break+tank


You'll need a pump to get the water from the tank to the house - nice variable speed one

Spawky

OK great I'll look into those. Had never heard of them to be honest and last few houses I saw, had a big blue pressure tank. Why would one choose a break tank with a pump over a pressure tank in this case do you know?

gctest50

Pumped, you could have a Combi boiler - you wouldn't need a hot water tank

And mixer showers would be fine since the pressure is balanced and plentiful

Gravity fed plumbing works perfectly well when you have a good bit of gravity also a correctly fitted water tank is less likely to cause any leak mayhem.

Given a choice I’d go for a break tank(which is just a tank with stored cold water) and a good pump, I’d use a unvented cylinder which would be positioned in the house for most practical hot water delivery, I would also consider a decent combi but I’d want a electric shower as a secondary source of hot water.

Spawky

gary71 wrote: »

Gravity fed plumbing works perfectly well when you have a good bit of gravity also a correctly fitted water tank is less likely to cause any leak mayhem.

Given a choice I’d go for a break tank(which is just a tank with stored cold water) and a good pump, I’d use a unvented cylinder which would be positioned in the house for most practical hot water delivery, I would also consider a decent combi but I’d want a electric shower as a secondary source of hot water.

Great thanks for those inputs guys. I had the impression that pumps use alot of power and wear out if constantly turned on / off for short periods, hence the pressure tank idea.

We plan to use a Nolan Compact P for DHW and mechanical ventilation so I'll need to check how this will work best with any cold water storage I choose I guess. Yes I had hoped to have one mixer shower and one electric as backup.