Any combi boiler deals on ?

ahll

Looking to repalce a really old boiler and put in a combi boiler...

I am looking for recomendations and heads up about any current deals..

The best so far seems to be BnQ at £550 a Heatline Monza which I believe is made by Vaillant...so should be good

It's for a 3 bed fairly big house with 8 rads..so I was thinking a 28KW would be the best to go for...

HappyMJ

The 28kw is for the hot water. My boiler has an output of 12kw and it's fine for heating and I also have 8 radiators although my 3 bedroom house I wouldn't describe as fairly big.

ahll

HappyMJ wrote: »

The 28kw is for the hot water. My boiler has an output of 12kw and it's fine for heating and I also have 8 radiators although my 3 bedroom house I wouldn't describe as fairly big.

Oh maybe a should have mentioned I am also thinking of running a shower of the system as well. Thanks for the info though I am just sounding out things to narrow down my selection... :j

unclebulgaria

how do you know you can have a combi?

HappyMJ

ahll wrote: »

Oh maybe a should have mentioned I am also thinking of running a shower of the system as well. Thanks for the info though I am just sounding out things to narrow down my selection... :j

Showers are generally quite low flow. I have an electric shower rated at 8.5kw it's flow rate is 4 litres per minute in winter. It's very low. If you put a 24 kw output boiler in I would say the flow rate would be an acceptable 11 litres per minute at 35 degree increase in water temperature.

It's the bath fill time that is really annoying with a combi they seem to take quite a long time where as mine when filled with very hot water from the cylinder the flow rate is about 30 litres per minute. 20 litres a minute from the hot water in the cylinder and 10 litres a minute from the cold tap. It's virtually a power shower when I attach a shower to the taps.

Combi's turn the central heating off when the shower is running. It's not a problem when you only have a shower for 5 minutes or so.

ahll

unclebulgaria wrote: »

how do you know you can have a combi?

Why wouldn't I be able to have a combi boiler ?

ic

Who's going to fit it? I would expect buying on price alone will prove to be a false economy - you'll be at greater risk of break downs later (and sooner) in life. Getting a boiler fitted by an installer approved by the manufacturer will usually secure you a longer warranty period. Worcester for example are currently offering a seven year warranty on their Si and CDi models. The norm is usually one or two year warranty.

If an engineer fits a boiler they supplied, you should be able to call them back to fix it within the warranty period at their cost, whereas if you supply the boiler and then employ the engineer to fit it, if it breaks down and its not due to a problem with how it was fitted, you'll have to pay the labour to fix the replacement parts.

unclebulgaria

ahll wrote: »

Why wouldn't I be able to have a combi boiler ?

Well everyman and his dog thinks they can have a combi! Did the RGI's who have quoted check your water pressure/flow properly?
Just because someone says you can have a combi doesn't mean you can. If the incoming water pressure/flow isnt correct then you cant have one and, I may be wrong here, the manufacturer may not honour a warranty if you complain about your new boiler and the problem is incorrect incoming water pressure/flow.
You must check the standing pressure at a mains tap then turn on another mains supplied tap to see what your working pressure falls to, if it drops too low then a combi wont work properly. Then the flow at one mains tap needs checking then checking again with another mains tap running. I've lost count how many combi's have been fitted to houses without enough pressure/flow.
Just ask, it wont hurt and may save you a headache later.

lee_w

i'd have a heat only boiler with a megaflo if i had the choice

combi wise you can't go wrong with worcester or vaillant, even ideal have come along way, the ideal logic plus comes with a 5 year warrenty aswell

ahll

ic wrote: »

Who's going to fit it? I would expect buying on price alone will prove to be a false economy - you'll be at greater risk of break downs later (and sooner) in life. Getting a boiler fitted by an installer approved by the manufacturer will usually secure you a longer warranty period. Worcester for example are currently offering a seven year warranty on their Si and CDi models. The norm is usually one or two year warranty.

If an engineer fits a boiler they supplied, you should be able to call them back to fix it within the warranty period at their cost, whereas if you supply the boiler and then employ the engineer to fit it, if it breaks down and its not due to a problem with how it was fitted, you'll have to pay the labour to fix the replacement parts.

In the process of getting quotes at the moment...I wanted to have a good idea of which combi boiler I want ...as they do as you

ahll

unclebulgaria wrote: »

Well everyman and his dog thinks they can have a combi! Did the RGI's who have quoted check your water pressure/flow properly?
Just because someone says you can have a combi doesn't mean you can. If the incoming water pressure/flow isnt correct then you cant have one and, I may be wrong here, the manufacturer may not honour a warranty if you complain about your new boiler and the problem is incorrect incoming water pressure/flow.
You must check the standing pressure at a mains tap then turn on another mains supplied tap to see what your working pressure falls to, if it drops too low then a combi wont work properly. Then the flow at one mains tap needs checking then checking again with another mains tap running. I've lost count how many combi's have been fitted to houses without enough pressure/flow.
Just ask, it wont hurt and may save you a headache later.

Ok will ask it does seem as the water pressure is quite high in the house.