I suspect the engineer is pushing the Powerflush as he is under pressure to sell upgrades. This sort of sales pressure is why many very good BG engineers leave. We do get a commission of sorts for selling things which is fine so long as the selling is right.
As previously advised they don't cover sludge etc.
As for saying that your cover is pretty much null & void that's BS.
Call back BG get them to sort out the noise (request a different engineer if you wish)
Ask them to take a water sample and get it tested and then you can act upon the info. Make sure the don't just drain a small amount off a rad. Let the water drain for a while before the sample is taken.
The Magna Booster product we promote is probably a good idea and probably all you need (if anything)
If you had rads pin-holing I would change that one and explain that further rads would not be covered unless the sys was flushed. But not just because the water that I drained off was black.
The pot with a magnet sounds like the Magnaclean demonstrator that we have. I use it to show how the thing works. I don't sneek it in and then claim that its your water.
Hope this helps
As previously advised they don't cover sludge etc.
As for saying that your cover is pretty much null & void that's BS.
Call back BG get them to sort out the noise (request a different engineer if you wish)
Ask them to take a water sample and get it tested and then you can act upon the info. Make sure the don't just drain a small amount off a rad. Let the water drain for a while before the sample is taken.
The Magna Booster product we promote is probably a good idea and probably all you need (if anything)
If you had rads pin-holing I would change that one and explain that further rads would not be covered unless the sys was flushed. But not just because the water that I drained off was black.
The pot with a magnet sounds like the Magnaclean demonstrator that we have. I use it to show how the thing works. I don't sneek it in and then claim that its your water.
Hope this helps