New boiler - changing gravity fed to pressurised system

[NorthernLurker]

Our boiler's time is up. Not bad given it's 16 yrs old and is the notorious Potterton Suprima put in by the builders.

So the plumber is keen to put in a pressurised system or we could stick with heat only. I can't afford to replace radiators so any pitfalls in going pressurised?

Anybody?

I had a pressurised system out in when I had a loft conversion. It was the hot water cylinder that needed changing. The boiler was strong enough to cope. That was all that was changed. New one takes up most of airing cupboard so lost some storage space. No new radiators or pipes required

We had to change the pipe from the supply to the boiler. Was the most difficult part as it was under all the floors and walls on its journey

We got a pressurised cylinder last year; wanted to get rid of electric shower and have one mains-fed (although not done yet) and it was nice to get rid of manky tank in loft. Also enabled changing to a bigger tank (we heat water by solar so didn't want a combi).
We had to have a new gas supply pipe put in (although relatively simple under floorboards) with the new boiler. Water pressure incoming was good although some plumbers were worried about the water pipes as some in concrete.

We've had no issues and we changed no radiators (but had them flushed).

I think the system boiler has a lot of advantages though I am worried about pipes bursting etc. They really shouldn't, the house is only 16 yrs old but still...

Improbable that pipes will burst.

But more likely old taps and valves will leak a bit.

And any bad joints might.

Are you talking about an unvented cylinder? or a combi?

A modern heat only boiler can run a new unvented cylinder, or it can run your old cylinder. It doesn't care.