Well, winter is here again. Have you inspected your furnace or boiler? It is important to keep them running efficiently. You don’t want them breaking down during a cold spell.
If you have any kind of gas furnace or boiler I highly recommend you keep a spare ignitor or thermocouple. And when you use the spare immediately order another to replace it. You can find those online.
I haven’t mentioned it before but when I was doing appliance repair, before I retired, I used to get my parts from repairclinic.com. This is not meant to be an advertisement and there are others but I just like them. If you need a maintenance manual for your heating system I have a lot of them right here: StepRightUpManuals.com Heating Service Manuals