Hot water tank choice

[andrew5235]

Hello,

I have had a search of the forum but no success and so here is my dilemma. I want to replace my current vented indirect hot water cylinder (fully pumped on Y plan) as it does not provide enough water for a decent bath and 2 showers in a row is about its limit even with the immerser on, I think that it is a 950 * 450 tank.

The dilemma is should I go for an unvented albion superduty 120l tank or a similar sized unvented tank. What are the pros and cons including time to fit? Pressure for a shower is not bad but would probably be nicer with the higher pressure, but is it worth double to cost?

What about relative reliability?

Thanks
Andrew

 

[ninjaboy]

sorry dont know about cylinder but water pressure will be same surely, as that determined by tank in loft or wherever it is.

 

[kevplumb]

if the water pressure is ok stick with it
are you sure the boiler is up to the recovery rate

 

[ChrisR]

Your boiler will be 15 kW or more, probably, so the 3kW immersion will make begger all difference. Your "36 x 18" probably has the pipes from the boiler coming in/out very close together, so the coil in there is weedy giving you a slow reheat. Modern cylinders are much better on that.

Unvented is (assuming various things) also quick to reheat, and yes gives lots more pressure. Think more like 5 - 10 times the price though, and it isn't something you'd fit yourself. If you messed up and enough went wrong it would blow the house apart.

 

[andrew5235]

Hello,

Thanks for your advice, boiler should be up to it, I hope. I think I will stick to vented, just couldn't quite decide if the extra water pressure was worth it, probably not, if it distresses me that much then I will fit a pump.

Ninjaboy, the difference with an unvented water tank is that it works under pressure and therefore you get mains pressure hot water, this also enables you to place the tank anywhere in the house.

I was not going to tackle the unvented myself but I will fit the vented, I have a healthy fear of those things which are likely to blow-up

Andrew