In general, we don’t recommend that you attempt to troubleshoot a boiler on your own, and certainly don’t believe the average homeowner should attempt to make repairs to a hot water boiler. This could be dangerous, and time-consuming when you don’t know what to look for. Technicians with the proper training can come to your home and make a quick assessment with all the tools they need to do so.
Still, it’s useful to know what can go wrong. That way, you know why it’s so important to take care of issues quickly and have a better idea of what to expect.