Unvented cylinder size

[Notagainpike]

200/210 or 250l indirect unvented cylinder...

Pros and cons of both please guys, whats the thinking??
Better to go bigger, or are there other considerations to be thought of....?

 

[king of pipes]

Depends on your usage really and how many adults and children in the property usually 45 litres per person.

 

[Timmy D]

You also might want to consider ACV tank in tank cylinders. You can get away with smaller because of their rapid reheat ability.

 

[Notagainpike]

Depends on your usage really and how many adults and children in the property usually 45 litres per person.

Only 2 adults atm!....but we seem to run out of hot water regular....

 

[king of pipes]

Oso cylinders are also a good choice recently fitted this one I'd of thought 210 litres would be enough for 2 people but if your taking long showers and baths stagger the heating and primary heat times or get your system wired for priority hot water . Kop

 

[Last Plumber]

How many bedrooms (how many people could comfortably live there)
Is it likely to increase from the two of you?
Do you both shower or use the bath? If you use the bath is it daily?
Would you shower one after the other?
Average shower time in UK is apparently 7 minutes although personally I can't see how you can be in there that long.
Would you say that's correct?
What boiler is heating this cylinder? Is it a modern condensing boiler?

 

[Enthalpy]

There is a sizing guide on page 12 of the Gledhill STAINLESSLITE PLUS UNVENTED INSTRUCTION MANUAL - DESIGN, INSTALLATION & SERVICING:

https://www.gledhill.net/uploads/StainlessLite-Plus-Manual.pdf

 

[Notagainpike]

Oso cylinders are also a good choice recently fitted this one I'd of thought 210 litres would be enough for 2 people but if your taking long showers and baths stagger the heating and primary heat times or get your system wired for priority hot water . Kop

Looks nice and compact, id not seen these....wired for priority hot water...is this just a change in the control box wiring??

 

[Notagainpike]

How many bedrooms (how many people could comfortably live there)
Is it likely to increase from the two of you?
Do you both shower or use the bath? If you use the bath is it daily?
Would you shower one after the other?
Average shower time in UK is apparently 7 minutes although personally I can't see how you can be in there that long.
Would you say that's correct?
What boiler is heating this cylinder? Is it a modern condensing boiler?

4 bedroom, maybe will at somepoint, yes, both shower, and usually after each other, probably spend way more than 7 mins at a time tbh!
Boiler is a 330i...i think....badged as a british gas...

 

[Notagainpike]

Is the genaral oppinion, that it is better to go for a smaller unit and rely on the fact that they heat recovery is quicker or go for a larger unit and heat more than maybe required, on the basis that heat loss is better than it use to be....