When things aren't working like the should do, it's so easy to get frustrated and annoyed. Maybe your boiler isn't firing up properly, maybe your heating has gone off. The question is "do i need an engineer?". But how do you know when to call an engineer, or can you fix it yourself? There’s a good reason to run through a few checks yourself before you call an engineer. This will ensure that you get the right help if you discover you do in fact need the help of a professional.