Is it easy to control the temperature on the Hot Water Cylinder? I believe mine is set to hotter than required and might be causing slightly higher than usual electricity usage. Water coming out of the shower and taps is very hot on the hottest setting. It's a fairly modern Rheem mains pressure cylinder. I can see a red valve but it seems to be locked. Can put some pictures later on. Thanks
The minimum the HWC can be set to is 60deg, and the hottest it can be coming out the tap is 55, so be aware of those temperatures. Your cylinder will have a tempering valve that controls the temperature to the hot tap, this should be able to be adjusted to lower your temp.