water heaters

Good morning everyone. Does someone know is my INSUATHERM 150 L unit operating under pressure or without pressure? This is my unit after 11 years of operation (without maintenance - I wasn't aware). It's leaking rusty water in drops. Is something missing or incorrectly installed? Could one...

Hi, hoping for some advice… We have an economy 7 system that heats the water off peak. The water heater is ‘on’ for 7 hours but we don’t need it on that long. Is it possible to replace the wall switch to the economy 7 immersion with a digital timer switch? I realise the there is no power to the...