Suggest gas combi boiler

[Depo]

Very interesting publication on aluminum vs stainless steel in boilers:
[DLMURL]http://www.weil-mclain.com/en/assets/pdf/WhitePaper_CompALSS_Final.pdf[/DLMURL]

But plumbers on forums are saying to steer clear from aluminum.

 

[Masood]

Very interesting publication on aluminum vs stainless steel in boilers:
[DLMURL]http://www.weil-mclain.com/en/assets/pdf/WhitePaper_CompALSS_Final.pdf[/DLMURL]

But plumbers on forums are saying to steer clear from aluminum.

Which plumbers on which forums? Nobody on here has made such a strong statement. There are marginal differences between the two metals in terms of performance, longevity, efficiency, etc.

It's pretty rare for the main heat exchanger to be the part that ends boiler life. Ignore what the heat exchanger is made of, focus on the quality and reliability of the other components, as they are far more likely to fail.

You've had sterling advice so far from people with real life experience, who actually install, service and repair boilers in the field, yet you seem far keener to trust a pseudo-academic paper based on research carried out in lab conditions by a boiler manufacturer!

Hardly the most unbiased of researchers, or the most statistically rigorous study!

 

[Masood]

As for the dB levels - you are seriously wasting your time even giving this any thought. As already stated, a washing machine or kettle will be much noisier.

How much time do you actually spend in your kitchen with no other appliances running? You're more likely to be in another room, shower, or watching telly, listening to music etc.

 

[Dotty]

Confirmation bias, Mas.

 

[stussy]

This is a ridiculous post. It's like saying I want to go on a 35 degree celsius beach holiday to the north pole.

However, that said, In my opinion, the boiler that comes closest to your original brief is the Viessmann 200W 30kw combi. Its bullet proof too.

 

[Depo]

That white paper doesnt say "dont buy aluminum". It provides quite in depth view on each metal and how it will affect boilers life.

Plenty of people are saying corrosion, grey goo, blocked lines.

https://www.google.co.uk/#q=stainless+steel+aluminum+heat+exchanger

Yes, aluminum does have 4.5x better thermal conductivity, but tube walls are much thicker due to fact that is not as strong as stainless steel - will crack and leak over time. On that fact, thermal cond. is equal.

 

[Depo]

As for the dB levels - you are seriously wasting your time even giving this any thought. As already stated, a washing machine or kettle will be much noisier.

House currently live in has Ideal combi. When I`m in bed upstairs I can hear it running and it drives me nuts. Noise seems to come up through pipes.

How much time do you actually spend in your kitchen with no other appliances running?

Its not about noise in kitchen, but living room & bedroom.

 

[Masood]

House currently live in has Ideal combi. When I`m in bed upstairs I can hear it running and it drives me nuts. Noise seems to come up through pipes.



Its not about noise in kitchen, but living room & bedroom.

That's not the boiler, it's badly installed and possibly badly designed pipework.

 

[Masood]

That white paper doesnt say "dont buy aluminum". It provides quite in depth view on each metal and how it will affect boilers life.

Plenty of people are saying corrosion, grey goo, blocked lines.

https://www.google.co.uk/#q=stainless+steel+aluminum+heat+exchanger

Yes, aluminum does have 4.5x better thermal conductivity, but tube walls are much thicker due to fact that is not as strong as stainless steel - will crack and leak over time. On that fact, thermal cond. is equal.

Corrosion - can be mitigated by a through powerflush on installation and proper dosing with inhibitor chemicals.
Grey goo - dealt with during thorough servicing
Will crack and leak over time - the rest of the boiler will have shuffled off its mortal coil long before this will happen (in normal circumstances). You may be unlucky and have a heat exchanger crack due to manufacturing defect, but I have replaced more SS heat exchangers than ally ones. The thinner walls make any weakness or manufacturing stress in the metal far more critical.

Seriously, you are worrying about things that are so unlikely to happen that you're not seeing the wood for the trees. Stop sweating the petty stuff!

 

[bert large]

When condensing boilers became the norm after 2005 Part L building regs. came into being, all the talk was of how aluminium heat exchangers wouldn't last the course & how stainless would be so much better.
In fairness I have not heard of any prematurely failed heat exchangers, ally or S/S so probably all just mythical nonsense, just like the year 2K bug !

 

[quality]

Very interesting publication on aluminum vs stainless steel in boilers:
[DLMURL]http://www.weil-mclain.com/en/assets/pdf/WhitePaper_CompALSS_Final.pdf[/DLMURL]

But plumbers on forums are saying to steer clear from aluminum.

Obviously You have got some knowledge or information from somewhere. What your desire and opinion suggest is that its not the norm. You can have exactly what you want flow, temp rise, duty etc. The only factor which limits this is how much you are prepared to spend

 

[jonnyswamp]

Ring Biasi, Ferroli or any other quality manufacturers and ask for their sales dept
They will be happy to answer any query you may have, in fact I'd go as far as to say they will be delighted to actually speak to a real person who wants to know more about their products
You may be even more luckier and get a good discount over the phone from them

 

[ShaunCorbs]

When condensing boilers became the norm after 2005 Part L building regs. came into being, all the talk was of how aluminium heat exchangers wouldn't last the course & how stainless would be so much better.
In fairness I have not heard of any prematurely failed heat exchangers, ally or S/S so probably all just mythical nonsense, just like the year 2K bug !

ooo missed a few posts, surves me right for sleep in and worcester/ others have a 10 year warranty on heat exchangers

 

[wattsie1987]

Hold your breath just had an email that Vaillant are bringing out a new boiler expected to be called underfloor tec and the energy consumption Is unreal they've also developed a new way of fans operating and are almost silent watch this space.

 

[Dotty]

Hold your breath just had an email that Vaillant are bringing out a new boiler expected to be called underfloor tec and the energy consumption Is unreal they've also developed a new way of fans operating and are almost silent watch this space.

Is that the one where they insist on you using Dihydrogen Monoxide as the heating medium?

 

[wattsie1987]

Is that the one where they insist on you using Dihydrogen Monoxide as the heating medium?

Yep it is I wasn't going to say but you've let the cat out the bag now! The way it fractionally distalisees dihydrogen monoxide and sells the unused products back to the energy supplier turning a profit for the user is unreal! Heating and ho****er and they pay you an average of £648 a year is mind boggling. I just can't believe it will only produce a max of 23db doing all of that I have one pre order.

 

[lame plumber]

I am waiting for Williams to launch the Intergas rapide, that he mentioned in his thread a minute back, I'll be popping one in for an old customer as soon as they appear, think they use the stuff croppie mentioned.

 

[Masood]

Yep it is I wasn't going to say but you've let the cat out the bag now! The way it fractionally distalisees dihydrogen monoxide and sells the unused products back to the energy supplier turning a profit for the user is unreal! Heating and ho****er and they pay you an average of £648 a year is mind boggling. I just can't believe it will only produce a max of 23db doing all of that I have one pre order.

Lucky sod! I hassled my rep to get me on the pre-order list but he said they had none left.

 

[Chalked]

Yep it is I wasn't going to say but you've let the cat out the bag now! The way it fractionally distalisees dihydrogen monoxide and sells the unused products back to the energy supplier turning a profit for the user is unreal! Heating and ho****er and they pay you an average of £648 a year is mind boggling. I just can't believe it will only produce a max of 23db doing all of that I have one pre order.

Dihydrogen monoxide. Its the future!

 

[Whyme]

Dihydrogen monoxide defiantly is the way forward, incorporate the new ceramic heat exchanger being developed and i reckon boilers will easily push the A+++ on that new ERP thing in September.

 

[kris]

Dihydrogen monoxide defiantly is the way forward, incorporate the new ceramic heat exchanger being developed and i reckon boilers will easily push the A+++ on that new ERP thing in September.

We have to do the 7 day CPD course to work on theses though, and Yeh they are all ERP pumps ,,,, also worth mentioning you can use WIFI to adjust the Dihydrogen output, just means we need the new combustion analysers that incorporate the Dihydrogen sensor, I do hope they have a 5 year life span,

 

[ShaunCorbs]

We have to do the 7 day CPD course to work on theses though, and Yeh they are all ERP pumps ,,,, also worth mentioning you can use WIFI to adjust the Dihydrogen output, just means we need the new combustion analysers that incorporate the Dihydrogen sensor, I do hope they have a 5 year life span,

does that mean if you have an i phone no more stupid little button clocks/timers to set ? you can just dl the app and set your times like a nest or wave

 

[Whyme]

I hear the new Abel analyzers will incorporate the Dihydrogen cell.

 

[kris]

does that mean if you have an i phone no more stupid little button clocks/timers to set ? you can just dl the app and set your times like a nest or wave

Yeh that's right,

 

[Riley]

This is really informative. Glad we can talk about these new concepts. Hopefully it helps the OP