I noticed a little condensation happening in my heater a few days ago. I left it because I have had the problem before without any major issue. Tonight I heard my heater blow up. It did with such a force that it wacked the side of my tank and that got my attention. it then proceeded to blow up another 2 times (over about a 3 second period) with bright blue flashes and bangs against the side of the tank before the fuse on the meterbox tripped. Makes me wonder how reliable my fusebox is as the sparky told me that the fuse should trip in mil iseconds.

Heres a short clip showing a crack from top to bottom. Sorry about the quality but I had to compress the crap out of it for the forum. It still gives you an idea and I dread to think if I had my hand in the tank what sort of kick I would have got.

I’d just like to remind people that if they see condensation inside the heater to either replace the heater or return the product to place of purchase for either a refund or exchange of some sort. The force with which this blew up is an indication of what you may have to endure if you have a body part in the tank, come failure.