Is it still the same air conditioner?

Is it still the same air conditioner?

This is one of the brain teasers my dad and I used to discuss.

Let’s say you have a hatchet, and the handle breaks. You go to the store and get a new handle and get back to work. A few weeks later the blade cracks, so you go to the store and get a new blade for the handle. It’s still your hatchet, but is it the same hatchet? He and I were discussing it again recently, after some work he had done in his house. I asked him if he finally got his ancient air conditioner replaced, and he said he hadn’t, because still worked like new. So many of the parts had been replaced over the last fifteen years that even though the AC unit was that old, it had basically all new parts. The only original stuff from the HVAC system was the housing and the ductwork, all of the innards had been gradually replaced over the years. So at no point did it become a different HVAC system, but at the same time it sort of is an entirely new system. The A/C tech who had come to the house had been fascinated by the patchwork system, and asked my dad a lot of questions about it. Apparently Dad had made some upgrades and used some components that didn’t ordinarily go together, so this was a Frankenstein’s Monster of a climate control system. I think that definitely answered the brain teaser, because this started out as an HVAC system and evolved into a hybrid monstrosity… but hey, it still works!

 

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