Fischer aquaefficient vs cylinder

waqasahmed

I've seen this 

https://fischerfutureheat.com/product/aquafficient/

Unlike sunamp, it looks like they're backed by a 10 year warranty. They're rated for 40,000 cycles too

Would there be any real disadvantages if you have this instead of a hot water cylinder? The advantage ofc is space saving which is decent for smaller houses 

tacpot12

Only disadvantage is likely to be reliability. Sunamp are struggling with this aspect, and I suspect that Fischer also have a fair few failures. If you have to wait a week for Fischer to come out to repair your aquaefficient unit every year, would you still be pleased with the product? I'm not suggesting that the reliability would be that bad, but you need to look into the reliability and understand what happens when the 10 year warranty ends. 

You can get small cylinders. You have even get them in the same shape as the Sunamp and Fischer units if you have a small space. A small cylinder might be ok if you only need to provide hot water to taps, but for a bath or shower, it's not going to be sufficient.  

Reed_Richards

You have posted this in the heat pumps section.  You need to check the phase change temperature is compatible with what a heat pump can provide efficiently.  It's too high in the standard Sunamp product.

matelodave

IMO anything made or sold by Fischer is suspect and I wouldn't touch it with a barge pole. They are renowned for their dodgy descriptions and false claims of economy ect

DougMLancs

Heat Geek announced this new ‘combi’ cylinder today- could be a game changer https://youtu.be/3QAX6ygW9HM?si=PwaGJcD8w__ES_aT

Reed_Richards

Unfortunately you have to find and watch another video to find out how this Heat Geek 'combi' cylinder actually works.  However I'm glad to see that they agree with my previous statement.

matelodave

waqasahmed said:

I've seen this 

https://fischerfutureheat.com/product/aquafficient/

Unlike sunamp, it looks like they're backed by a 10 year warranty. They're rated for 40,000 cycles too

Would there be any real disadvantages if you have this instead of a hot water cylinder? The advantage ofc is space saving which is decent for smaller houses 

not quite ten years if you read the T&C's

***10 Year Warranty (Aquafficient)
Aquafficient warranty terms: Storage core leaks = 10-year warranty. Element failure = 5-year warranty (products with replaceable elements only). Overheat thermostat failure = 2-year warranty. Hydraulic assembly failure = 2-year warranty (if not resulting from scaling/foreign objects). Control board failure = 2-year warranty. Failure of thermostatic mixing valves & expansion vessels = 2-year warranty.
10-year warranty on the Aquafficient (if installed by Fischer under the ‘Warm Home Service Contract’). Otherwise, 2 years warranty

Probably a good idea to read all the T&C's on the Fischer website to see what other caveats they've bunged in as well

koru

Reed_Richards said:

Unfortunately you have to find and watch another video to find out how this Heat Geek 'combi' cylinder actually works.  However I'm glad to see that they agree with my previous statement.

Coming tomorrow: https://youtu.be/a1XGBmBLUnA

Netexporter

A brilliant bit of lateral thinking. Literally turning a hot water cylinder inside out/upside down (sort of).

File under game-changer, I reckon.

Reed_Richards

Well the new Heat Geek thing is basically a thermal store, something that has been around for years.  But instead of heating the water in the thermal store with a coil, as you normally would, you heat the contents directly.    And, apparently, because of its small size you don't have to comply with some of the normal regulations.  It seems like a very neat idea.

When I had an oil combi boiler it worked terribly for hot water because the pipe runs to any hot tap were too long.  If I had one of these it would still end up in my airing cupboard because that is central to all the hot taps - but it would win me back a bit of storage space.       

FreeBear

A compact and neat solution, although I do wonder just how much they cost.