Will new Viessmann system save me money?

Firstly John, thank you for your reply - it's much appreciated. The read out you refer to I think is as attached?

The engineer was suggesting the Viessmann could get me a 15-20% saving over my current boiler.

Is there a typical lifespan for one a boiler? Mine is approximately 12 years old - do these things go end of life after 10-15 years or can they keep trucking for 20-30 years? I get it serviced every year or eighteen months but the service never takes too long - an hour or so (I recall reading previously that service levels can vary dramatically).

All that I received on the post service report and quote for potential work was "30kw Viessmann system boiler 5 year parts and labour warranty". There was no further information on the model of boiler.

If I don't get a new boiler the guy is suggesting I need:

- Flue seals for burner,spiggot and elbow
- Installation of external 12ltr expansion Vessel
- 1 x Boiler mag filter

Aside, I think I need a new water pump (the current one started making loud noises every time it kicked in over the last few weeks) and he is suggesting the impeller is broken (he didn't open it but based this on the sound) and is recommending a new Grundfos Scala2 pump. He also said that the current setup does not have a bypass and thus has quoted for a "auto fill valve and bypass.".

All in all, the service is looking to have thrown up a lot of items. I'm thinking I need the pump and maybe new seals - I'm not sure if I need a new boiler or not.

Any input is much appreciated. Thanks

Hi Dtp1979 - the guy described it as an "easy install". There is no pipe running -and the boiler is very assesible. I think it's a case of out with the old and in with the new. The boiler is in a utility room press. In fairness, the guy is not saying I have to go for a new boiler. He is saying that I should replace seals on the existing one as they are starting to show wear and that I should also get an expansion vessel (something to do with the pressure not releasing properly which could cause issues across the system over time).

The house is a four bed semi detached - about 2,000 square foot I guess.

I'm not sure I fully understand the talk of zoning and weather comp.

I have underfloor heating downstairs, with a manifold controlling four zones. Upstairs I have rads in bedrooms and separately controlled towel radiators.

Engineer was very enthused by Viessman - saying they were the first to stainless-steel (I nodded a lot though as much of the stuff he was saying went over my head).

Man with broke phone wrote: »

What I'd be more worried about is downtime.

It will be more efficient, and it will start costing money but the worst thing is it will start breaking down. And it wont brake down until that time of year when everybodies boilers start breaking down. I'd be more asking myself can I go a week or two in the cold because I have an old unreliable boiler.
I would get a second and maybe third quote If you can get one.

The cheapest doesnt mean the best though.

Indeed - I wouldn't fancy no hot water and I can't imagine the wife and kids would either. I'm working from home now too, so couldn't even shower in work.

I would point out that I've had no issues with the boiler. The engineer was implying saying that some seals were "starting to show wear" and should be replaced. He then suggested that there might be a cost saving long term in getting a new boiler, rather than putting money in to the existing one. The existing one has not given us any issues as of now.