Combi Boiler Required for a 4 bed house?

chris1012

We currently have a hot water boiler only and now we are changing the boiler for a combi to provide central heating as well.

We have a 4 bedroom house, with 2 receptions, one large kitchen/diner and 2 bathrooms.

In total there will be 11-12 radiators in the house.

What would be the best boiler required for the above that has a good gurantee package and known for their reliability?

Many Thanks

penrhyn

I would not have thought a combi would be suitable for a large property. It would not be able to supply enough hot water to several bathrooms at once.
Better to have a system or open vent boiler maybe?

missesther

I got a Worcestor Bosch with a 7 year guarantee. Excellent boiler and good warranty. If you find someone who is Worcestor endorsed then you can get the long warranty.

chris1012

A system or vent require a tank and are more expensive?

Missesther - How many KW is the boiler?

missesther

34. We were told it could easily run 30-odd radiators (we only have about 6) but we got it to have a highly powered shower.

southcoastrgi

see my advice on a thread here

i agree with penrhyn, you won't be happy to spend money & find you can only have one hot tap in operation at one time

have you had your pressure & flow tested ?

chris1012

Generally spesking we have all been used to a single flow of water rather simultaneously so it wouldn't impact us as much.

We dont have the room for a storage tank so I guess this would be the only option ?

We havnt had any tests done but a local boiler expert from within the locslity has said a 30kw+ would work nicely.

macman

missesther wrote: »

We were told it could easily run 30-odd radiators (we only have about 6) but we got it to have a highly powered shower.

It may well do, but that isn't the issue here. Any combi will run the CH with something in reserve, but it won't supply 2 bathrooms simultaneously. Flow and pressure are fundamental before even considering a combi. OP: any 'expert' who claims something will 'work nicely' without dong a site survey and flow test is simply not competent.

keystone

chris1012 wrote: »

We currently have a hot water boiler only

How does that work then if you don't have room for a cylinder? Also I find that very difficult to believe in a 4 bed 2 bath house tbh.

Cheers

Mr_Ted

missesther wrote: »

34. We were told it could easily run 30-odd radiators (we only have about 6) but we got it to have a highly powered shower.

:mad:Then someone is living in dreamland, dont believe everything your told:(

Mr_Ted

chris1012 wrote: »

A system or vent require a tank and are more expensive?
Missesther - How many KW is the boiler?

Its not about cost its about what will work effectively, efficiently and to suit the needs of the occupants and the property, and to determine that a WHOLE OF HOUSE assessment is needed as is required by LAW under Part L!!!

Personally IMHO a system boiler and unvented HW tank would be the best option for the size of property:) size determined by calculation, NOT QUESSWORK;)