Suitable combi boiler or unvented?

[macka09]

Hi all. A 4 bed house with one main bathroom and one ensuite. Would you always try to install an unvented HW cylinder or a decent sized combi?

Also, going from a low pressure system to a sealed system do you advise customer on the risks of possible leaks or what?

Thanks.

 

[ShaunCorbs]

3 options

Unvented
Storage combi
Or 42kw combi

I know which two I would go for

But all depends on your incoming water supply

And also even get them to sign a disclaimer

 

[townfanjon]

Potentially a big demand on HW , IMO its defo stored hot water i.e unvented , you wouldnt really install gravity HW anymore especially if theres plenty baths . But storage combis are gaining in popularity.

 

[Scott_D]

A combi will work if they know the limitations.
Storage combi better
Unvented is the rolls Royce if they have flow and pressure

 

[king of pipes]

A Family home i always advise a boiler with unvented if the supply is up to it , combis are good but have their limitations and yes make it 100 percent clear if upgrading there is a possibility of problems with old pipes in floors ect all the best . kop