Hello, just looking for some advice as I live in an all electric home and have been having an immersion heater crisis since 2019! I have a very very old immersion heater (the ones with a square outer jacket) and what happened was the tank worked fine for the first 4 years of being in my flat and one day the immersion switch fuse blew. I assumed it was the thermostat, got that replaced, worked for a while and again blew. I then got the actual immersion element changed, again worked for a couple days and blew as I switched it off. I was due a rewiring so assumed it could be an electrical fault so have now got the whole flat rewired. It was working fine for a while and then blew again as I switched it off recently. I think it’s worth replacing the whole cylinder as it really has aged over 30 years and could be leaking heat or have a wiring fault within the actual system. It’s really causing me mental distress now lol (who knew immersion heaters could be so stressful!). My Questions to you pro’s are: 1) I was wondering if anyone knew of any alternative water heating systems besides an immersion heater? 2) Do they sell single element immersion tanks? (I think my electrician cut the economy 7 switch accidently so I only have one socket powering the top part of the element on a standard tariff) I live alone so wouldn’t mind a smaller tank to switch on only before using. 3) If I were to get the whole cylinder replaced what sort of price am I expecting to pay 4) Are there any good companies out there you would you recommend for the job? 5) I have considered a combi boiler but I don’t really get how they work, do I need to get a whole new system installed throughout the flat or can it just be used to heat my hot water? Apologies for all the questions, I’m really a rookie and don’t know anyone in the plumbing industry to ask. Thanks!