Am having an extension into the loft. How high should the bottom of the expansion tank be above the top of the highest rediator?
central heating
Feb 03, 2007
5 Replies
As high as you can get it - the higher, the easier to bleed. If you can manage a couple of foot (60cm), that works very well.
Any chance you could convert to a sealed system? Saves loads of hassle in this circumstance.
system, These work better and you dont need a feed and expansion tank just a small expansion vessel. pete
Provided your boiler is suitable, why not take the opportunity to convert to a sealed (non-vented) system? Then you won't need an expansion tank at all.
The expansion tank should (boiler permitting) be dispensed with altogether. See Sealed CH Faq.
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