I have a Potterton Netaheat Electronic 10/16 (the 'Widowmaker'!). It is now 23 years old, but save for two fan replacements seems to be fine. I am aware the gas valve is now obsolete and unobtainable new. However secondhand ones regularly come up on eBay and sell for about £120.
Should I buy one as an insurance, it seems rather a lot of money for something I may never need? ie in your experience how reliable are they, how many boilers have you replaced as a result of the valve failing versus the client just wanting a fancy new condensing combi? The fact there are so many working S/H valves on eBay implies to me they don't fail very often.
Should I buy one as an insurance, it seems rather a lot of money for something I may never need? ie in your experience how reliable are they, how many boilers have you replaced as a result of the valve failing versus the client just wanting a fancy new condensing combi? The fact there are so many working S/H valves on eBay implies to me they don't fail very often.