Perhaps, these alternate universe HVAC systems have a way of cleaning themselves
There is a story floating around on the internet about some physicists in the Antarctic who have found evidence of a parallel universe. The claims were made based on the detection of some kind of “energy” coming from beneath the ice of the South Pole! I am assuming they eliminated Santa Claus & Superman because they tend to dwell in the North Pole. This “discovery“ is welcome news to me because I’ve always been fascinated by the concept of the multiverse, where an infinite number of parallel universes allow for infinite outcomes of any event. Those that dream of being Superman are Superman in other universes, however bill Gates has done quite well in our universe but is busy begging on the streets in some of those alternate universes, however every one of us can only speculate about what life would be enjoy in another universe but I’m positive there is at least a single where HVAC systems operate at 100% efficiency powered by scrub free energy from some source. I also imagine that they run maintenance-free so any qualified HVAC corporation in that universe is relegated to the status of an idle Maytag repairman. Perhaps, these alternate universe HVAC systems have a way of cleaning themselves. There would be no need for the twice-a-year service that the lowly HVAC systems in our universe must undergo to keep running smoothly all year round, however my wife only wants to change a single thing in her alternate universe, and she may ask for some cosmetic improvements & perhaps a younger model of me, but what she actually wants is someone who will remember to make that call to the HVAC company to service our central HVAC unit. She simply wants to avoid those problems that arise when an HVAC idea in our universe is neglected.