The old fan heater (when it last worked) was used in my mother's caravan because it was exceptionally quiet. My brother then bought the van from her and insisted on using a noisy old fan heater in its place. I've never established why this was a logical choice. I'm the only family member who's inherited Dad's electrical tinkering skills. The rest of the family are electrical idiots.
Example: two of them couldn't get Mum's favourite reading lamp to work so they threw it out, claiming the switch or the bulb base was crook.
Not so, turns out the halogen bulb they took out of its little box was blown. Fortunately the rubbish hadn't been collected when I arrived and I rebuilt it.