New boiler - electric shower question

[Chuckles1066]

We're about to replace our ten year old Vaillant EcoTech Pro 28 boiler with a Worcester Bosch 32CDI.

Sorry Vaillant, you aren't fit to lick the boots of our old 40 year old Baxi Bermuda back boiler (which didn't miss a beat and we only replaced because we were told modern boilers are so much more efficient). Yeah, I've got a bridge to sell any of you who bought into that rubbish.

At least the Worcester Bosch comes with a ten year warranty so I can suckle on their golden teat until 2034.......

The guy who quoted us said if we had the 32CDI as opposed to the 28CDI then we could have a power shower installed when our electric shower finally dies (due to the increase flow rate?).

The shower runs directly off of the mains supply so surely the boiler size/power is irrelevant?

 

[Stuckinarut]

I don't think you can have a power shower installed with a combi boiler (if this is what you have?). You could just have a mixer shower that fed from the mains hot and cold.

 

[Madrab]

You're fitting a WB for a Vaillant and think that the WB is going to do a better job, lol good luck with that

If you have a Hot Water cylinder then you can install a power shower, if not and it's a combi going in then you'll have mains hot water and a power shower would not be an option, if the mains water supply is good enough of course.

 

[Johntheo5]

We're about to replace our ten year old Vaillant EcoTech Pro 28 boiler with a Worcester Bosch 32CDI.

Sorry Vaillant, you aren't fit to lick the boots of our old 40 year old Baxi Bermuda back boiler (which didn't miss a beat and we only replaced because we were told modern boilers are so much more efficient). Yeah, I've got a bridge to sell any of you who bought into that rubbish.

At least the Worcester Bosch comes with a ten year warranty so I can suckle on their golden teat until 2034.......

The guy who quoted us said if we had the 32CDI as opposed to the 28CDI then we could have a power shower installed when our electric shower finally dies (due to the increase flow rate?).

The shower runs directly off of the mains supply so surely the boiler size/power is irrelevant?

It depends on what one's definition of a power shower is. I thought a flowrate of anything over say 10LPM is considered a power shower. If so then a 28kw combi boiler will give a flowrate of 13.38LPM to give a showering temp of 40C from mains at 10C, a 32kw will give 15.29 for the same conditions, both power showers?.
A 10kw electric shower will give a flowrate of 4.78LPM for the same conditions so the boiler size/power is very relevant regarding the mains ability to supply those flowrates.

 

[Koolpc]

10 years is nowt when it comes to the life of a boiler. Does it really need replacing?

 

[kidgreen61]

I define a power shower as one fed from separate, gravity fed H&C supplies, the unit contains its own pump which provides the desired flow.

 

[Johntheo5]

Thats fine then. So why do you require a 28/32kw boiler?, are the CH requirements dictating it?

 

[Madrab]

I define a power shower as one fed from separate, gravity fed H&C supplies, the unit contains its own pump which provides the desired flow.

+1 - I've always known a power shower to be something that looks like an electric shower and, as suggested, is gravity fed and has an integral pump. Can't be used with a mains supply.

AS2000SR Silent Running Thermostatic Power Shower

Featuring our Quiet Mark approved, quiet pump technology for a relaxing shower experience, the Triton AS2000SR silent running power shower is the perfect solution for those with low pressure systems.

www.tritonshowers.co.uk

 

[Chuckles1066]

Thats fine then. So why do you require a 28/32kw boiler?, are the CH requirements dictating it?

Our existing boiler is 28kw. TBH we've lost confidence with the Vaillant (if you view my posting history here you'll see many posts about random boiler behaviour).

It's a bit like a car that starts playing up, whenever you get into it you wonder if it's going to get you from A to B.

Just as an aside - why is the industry so keen to (as in my case) move us from reliable back boilers that didn't miss a beat in 30+ years to these Mickey Mouse units that (in my case) have just about got to ten years with multiple issues?

 

[Madrab]

Just as an aside - why is the industry so keen to (as in my case) move us from reliable back boilers that didn't miss a beat in 30+ years to these Mickey Mouse units that (in my case) have just about got to ten years with multiple issues?

It's not the industry really, it governments, as far as efficiencies are concerned. That and customer driven requirements for smaller lighter smarter packages with more technology to make their lives easier

Older cast iron back boilers like the Bermuda 552 was only ~65% efficient. They were just about bomb proof with very little to go wrong for sure but the tech and market requirements have moved on massively since then and a huge lump of cast iron or anything else large and lumpy for that matter, no longer sells.

 

[Chuckles1066]

I'll take a bomb-proof unit from the 1980s that's 65% efficient in terms of energy usage against a Mickey Mouse "modern" boiler that's going to play up repeatedly (see my posting history) in 2024.

Where do I sign up?

I imagine you're all very proud of yourselves?

 

[Stuckinarut]

I imagine you're all very proud of yourselves?

Who is that aimed at?