I’d given up on the old boiler I used to use for brewing when the thermostat died. When I initially checked, to replace it was going to cost almost as much as a new boiler. Some time after it failed however I came across replacement thermostats on the website of The Brew Shop for a far more reasonable amount and bought one. I also bought a stainless backnut for the heating element which is far easier to work with than the original plastic one.
Having this 25l boiler back in service means I can work with smaller experimental batches more easily than I would be able to in my new boiler. I’ll probably convert to a small stainless version at some point, but for now it will do the job.