Will moving my hot water cylinder affect the water pressure

[Little Clanger]

I have a vented domestic hot water cylinder on the ground floor of a two-storey house. Cold feed is from a storage tank in the loft. Bathroom and kitchen are on the ground floor. I want to move the cylinder to the first floor. Am I correct in thinking that the head is measured from the tank in the loft to the taps, not to the cylinder, and so moving the cylinder upstairs won't decrease the water pressure at the ground floor taps?

 

Thanks in anticipation

[ProDave]

That is correct.  But as you are going to the expense of moving the cylinder, give serious consideration to upgrading to an unvented cylinder that basically gives you mains water pressure hot water, and enables you to remove the header tank in the loft.  Once you have had mains pressure hot water you will not want to go back to the old gravity feed system.

[Little Clanger]

4 hours ago, ProDave said:

That is correct.  But as you are going to the expense of moving the cylinder, give serious consideration to upgrading to an unvented cylinder that basically gives you mains water pressure hot water, and enables you to remove the header tank in the loft.  Once you have had mains pressure hot water you will not want to go back to the old gravity feed system.

Thanks for the advice

[G and J]

4 hours ago, ProDave said:

That is correct.  But as you are going to the expense of moving the cylinder, give serious consideration to upgrading to an unvented cylinder that basically gives you mains water pressure hot water, and enables you to remove the header tank in the loft.  Once you have had mains pressure hot water you will not want to go back to the old gravity feed system.

I’m struggling with that. We’ve a gravity system in our ‘91 build that’s always been good.   We’ve had pressurised systems in other properties and they’ve worked fine too, but no better.  
 

I have replaced the ball valve in the loft once in 33 years whereas the pressurised systems have needed much more regular attention.  
 

If one was comparing a poorly designed/functioning gravity system with a modern system I can understand the conclusion, but not otherwise.   (Yes ok, in some areas I’m a Luddite!)

[marshian]

31 minutes ago, G and J said:

I’m struggling with that. We’ve a gravity system in our ‘91 build that’s always been good.   We’ve had pressurised systems in other properties and they’ve worked fine too, but no better.  
 

I have replaced the ball valve in the loft once in 33 years whereas the pressurised systems have needed much more regular attention.  
 

If one was comparing a poorly designed/functioning gravity system with a modern system I can understand the conclusion, but not otherwise.   (Yes ok, in some areas I’m a Luddite!)

 

We had friends stay a couple of weekends back (they have a mains pressurised system - we have gravity and a pump on the shower) they commented how good the shower was 😉

 

I did raise the cold water tank a year or so back because we were borderline negative head and needing a more expensive pump that can cope

[SteamyTea]

42 minutes ago, marshian said:

they commented how good the shower was

I use a small, cheap shower pump on my gravity fed system.

Most people comment how good the shower is. Think I have about 1.5 m of head.

 

Two things to be wary of us running the F&E dry, causing an airlock, and the more serious one if causing negative pressure in a cheap copper cylinder, causing it to buckle.