STEELflow 300ltr Un-Vented Cylinder - no guarantee with a bore hole water source...Should I care

[jimseng]

Hello.

I have just been told that due to my new build having a bore hole for the water supply Steelflow won't provide a guarantee for the cylinder. I have been told I need to spend an extra £1200 to get one with a guarantee and it requires anodes changing once a year. Now I am fine with changing anodes, I have a boat which requires 3 of them each year, but this has just been sprung on me and I am new to this. Given that the cylinder has a 25 year warranty it suggests that they are not likely to fail and maybe the  £1200 is kind of unnecessary. My installer suggested that he would be comfortable just forgoing the warranty and saving the money. I haven't had all the tests done but the initial water chemical test has come back as very clean, a ph of 7.23 and no nasty chemicals. The water is a bit hard but nothing off the charts. Anyone got any thoughts?

 

[Iceverge]

I installed a non borehole non anode stainless steel one and am taking the savings as my own guarantee. 

 

4.5 years so far so good. 

 

Copper Industries do some nice guaranteed products. Maybe worth a call if you haven't purchased yet .

[Nickfromwales]

Stainless from Telford, ditch the hideous suggestion of sacrificial anodes (🤢🤮) and enjoy a long happy life, you and your UVC. 

 

I’ve only ever seen one stainless UVC ‘pop’ catastrophically, and that was installer error.

 

Your installer is a wise man, reward him with hot bacon and cold beer.

[JohnMo]

I have a normal cylinder, no-one even asked if I had a borehole.  25 year guarantee means nothing - they may not be trading. 

 

Not sure of your grade of stainless steel but, Stainless steel 316 can be used for the entire pH range from 0 to 14 (provided the chloride content <500 ppm).

 

Edit just looked, SteelFlow is made from Duplex so even more corrosion resistant

Edited Tuesday at 21:23 by JohnMo

[sharpener]

2 hours ago, jimseng said:

My installer suggested that he would be comfortable just forgoing the warranty and saving the money. I haven't had all the tests done but the initial water chemical test has come back as very clean, a ph of 7.23 and no nasty chemicals. The water is a bit hard but nothing off the charts. Anyone got any thoughts?

 

He is probably right. 7.23 is on the right side of neutral. A bit of hardness is fine. Duplex stainless should be good for many years.

[HughF]

My eahp has anodes (it’s a glass lined/enamelled steel thing)….. I should check the service schedule on them as I’m on acidic water (it eats non dzr resistant fittings)….

[jimseng]

Thanks for all the replies. I figured that the 25 year guarantee meant that these things don't go wrong, and £1200 extra is more than the cost of a replacement. It's good to get overwhelming backup on these decisions.