My property has an electric heater that I have always made sure is well-maintained by the local Heating & A/C professional! I did not do it to ensure the heater reMained functional. That was just a plus of involving the Heating & A/C repairman, but the real reason is that I feared a malfunction would either shock me or burn me to death. I avoided houses with any other type of Heating & A/C unit that I felt would threaten my safety. Boilers, for example, are in a style of heating technology that I would want to avoid living with. I thought about possible carbon monoxide poisoning, & that was enough to induce a panic attack. My parents property used a heater for heating, & my dad was once a heating & cooling provider, so every heater/heater tune-up & heater filter cleaning & upgradement was done on a routine, & my nice friend and I never had to worry. I’d live in a property with a central heater too, but all the houses in my part have installed other openings for a current heating & cooling system. I had work away from my hometown & was hosted by a entirely kind family my parents knew from school. It was just before winter heat, so the afternoons kept getting colder, & their boiler was on for a lot longer than on warmer afternoons. I remember my nice friend and I were eating brunch when the smoke alarm went off. I have never panicked as much as I did then. The heating contractor was called to diagnose & service the complication since the fire response team had also found that to be the smoke alarm trigger. It was something to do with excessive oil in the combustion chamber, & for me, those sound like fire hazards I’d rather avoid.