One interesting thing to consider (I have, sadly for power efficiency[1], a single-stage compressor) is a soft-start setup. Especially if planning to power HVAC

One interesting thing to consider (I have, sadly for power efficiency[1], a single-stage compressor) is a soft-start setup. Especially if planning to power HVAC from a generator for disaster recovery and not wanting to get a hugely sized genset just for HVAC startup current draw (mine has an LRA rating of 73A@240vAC, which is... non-trivial). [1] One benefit, though, is compatibility with smart thermostats. Multi-stage/VFD setups tend to use proprietary signaling which makes using Ecobee or Nest a challenge.