Well, some things can be done by anyone, some can't. Maybe you can fix the heating system yourself in Argentina, but you can't here. You need a certified technician, otherwise you don't get the approval of the gas company. That's the law and it is ok like this as there are so many homemade installations that blow up the house one after the other. Electricity again, it's not wise to handle it without proper training.

Yes, now these problems are solved, let's hope there won't be more as I'd like to focus on work 😬