Replace boiler when replacing the rest of the central heating system?

[teaboyjim]

Is it recommended to get a new combi boiler when replacing and installing a new central heating system with new rads and piping?
The boiler is a Baxi 105e combi boiler which is between 12 - 20 years old.

 

[bernardgreen]

Is it recommended to get a new combi boiler

Not if a heat only boiler is a better option, but some plumbers believe that a combi is always the best option.

 

[teaboyjim]

This would be replaced with a combi boiler. Is there anything that the older boiler could contaminate the new system with and damage it or reduce is longevity?

 

[Bodd]

How big is your house Jim

 

[teaboyjim]

How big is your house Jim

It's a 4 bedroomed mid terraced with two living rooms and a 200 ft2 kitchen with 4 various WC's - I've made the decision to go for new central heating system I just couldn't quite get a clear understanding if there's a risk to marrying it up with an older boiler.

 

[Bodd]

Where is the boiler how far are the outlets from the boiler

 

[teaboyjim]

The combi boiler is on the landing in a wooden cupboard - am not sure what is meant by "outlets"

 

[Bodd]

Taps
Bathroom
Kitchen
Wc's

 

[Bodd]

Shower rooms

 

[teaboyjim]

Shower rooms

Ah so there's two showers in the house - one is going to be upstairs within about 5 x feet of the location of the combi and the other is downstairs at the back of the house behind the kitchen

 

[Bodd]

If you stick with a combi I would have one Electric shower, as back up hot water if the boiler one day packs up.

On the other hand I wouldn't put a combi in a 4 bed house with two showers. Is there a bathroom?

 

[oldbuffer]

The old boiler will not sludge up the new system, although it would be wise to wash out the heat exchanger with clean water once it is disconnected.

 

[teaboyjim]

If you stick with a combi I would have one Electric shower, as back up hot water if the boiler one day packs up. On the other hand I wouldn't put a combi in a 4 bed house with two showers. Is there a bathroom?

So there's one shower room and loo upstairs and just the shower downstairs so no bathroom

 

[Bodd]

I like Combination boilers. Bit if you have lots of room I'd have a system boiler and unvented cylinder with Secondary return hot water

 

[sxturbo]

As others have said, you don't need to replace the boiler just wash it out.