The vanes (blades) are actually airfoils so any ice buildup on the leading edges cause the airfoil to stall like an aircraft would do.
Guess they'd need to install leading edge deicer boots like on aircraft, electrically heated naturally.
Add to that the viscosity of any lubricants used.
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Insulating a home to the same specs as the norms for much colder climates (like Canada) would pay off big time.
eg: R40 attics,R20 walls and double window panes.
Adopting those specs would greatly reduce power drain during hot weather and at a minimal additional cost.
Many, if not most, insulation products are made from recycled glass so that would be a major win/win.