Megaflow recharge interval.

26 Nov 2003
Reaction score
United Kingdom
I've had a Megaflow unvented system for just over 10 years. It's been fine, I normally recharge the air gap every six months. However, just recently the interval has been getting shorter and now it needs recharging every six weeks. Something is obviously not right. Any suggestions?
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What made you re-charge it every 6 months? I certainly would not call this normal.

I've fitted many of these over the past few years and as yet none, to my knowledge have ever had to have the air gap 're-charged.

Have you called Heatrae tech help?
Well that's an interesting piece of news!

I remember reading on their website that the air gap needed regenerating at intervals hence I've never given it a second thought. I'll give them a call and see what they suggest.


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