sava plugs

I think John (site owner) says they do - not sure where on the main site you'd locate his diary article about it unless you use the search facility though

But they're not cheap so cost-benefit analysis might depend on how many fridges / freezers you have, their age, and energy rating.  Also how full you keep them.

We use Sava plugs and I think they do make a bit of difference.  These days fridges and freezers are as economical as possible and don't use much electric anyway but, every penny counts.

Having the scientific mind of a goldfish (me) it would be interesting if one of the boffins on here could explain how Sava plugs work.  It would add to my knowledge of the world.

Seems to me that site is for verbal punchups, because unless I missed something it still doesn't explain how the plugs are supposed to work, also if they were a scam surely by now the OFT would have caught up with them.