Central Heating systems

marcosmantula

I have been reading this forum for quite a while as it has had the best info on gas boilers I've found but now that I need to make a decision I just wanted to gather opinions.

Basically, I am putting in a new kitchen and rather than boxing in a 30 year old conventional boiler I have decided to replace it, and ideally, move it out of the kitchen. I need good pressure for the intended kitchen tap and I am desperate for a decent shower so a simple boiler replacement really isn't an option.

I have had 6 quotes and pretty much every plumber has had their own ideas about what is the best system, i.e combi, storage combi or unvented system.

I have no experience of any of these systems as any property I have been in has had a conventional vented system.

The house is a smallish 3 bed detached with 1 bathroom and 1 en-suite shower room, 11 radiators and the mains water pressure is about 2bar with approx 20l/min flow at the kitchen tap.

I'm currently on my own so I'm sure a combi would be perfectly adequate but I want to make sure I make the best choice based on the property to make it future proof.

Any thoughts/experiences of the different systems, and whether the additional costs of an unvented system are worth it, would be appreciated.

Thanks,
Neal

southcoastrgi

marcosmantula wrote: »

whether the additional costs of an unvented system are worth it

yes

just bear in mind with either combi or unvented your 2 bar & 20 ltrs/min will have to supply all the water outlets in your home, meaning you may find reduced pressure/flow if more than one outlet is used at the same time

BristolS

It depends on your budget really.
I would suggest a high output combi or a system boiler and unvented if fund allow.

Mgman

Get a combi with the the highest LPM of hot water you can afford. In my previous house I had a combi fitted that was reccomended by the plumber as correct output for the size of house (BTU's for the heating) but the HW was a pathetic 9LPM.

In my next house I ignored the plumbers advice and told him to ignore the heating BTU's and get a boiler with the highest hot water LPM which I believe is 14LPM and is more than adequate.

lstar337

southcoastrgi wrote: »

yes

just bear in mind with either combi or unvented your 2 bar & 20 ltrs/min will have to supply all the water outlets in your home, meaning you may find reduced pressure/flow if more than one outlet is used at the same time

Not much of a problem when you are on your own.

bridgedino

In my 3 bed semi with the same flow rate as yours, I have a Worcester Bosch Greenstar Junior 28i condensing combi boiler. It gives me fantastic shower pressure from my standard non-pumped mixer shower. It also feeds 13 radiators and has never missed a beat.

Mind you if someone else runs another tap in the house while the showers in use then the shower looses heat during that time.

Not a big issue for us as we have learnt to work around it

Plumber90

I have sent you a pm

captainhindsight_2

What ever you choose make sure you take advantage of the min £1000 cashback for fitting the right spec boiler.