Here, in Virginia, technically you need to be a master electrician and pull permits anytime wire is run. In the real world, permits are seldom pulled, and when they are, the electrician would be responsible for everything up to the unit itself. Have roughed in many houses where we run the wire to the disconnect, then come back later after the outdoor unit has been set and pull a liquid tight whip to it. Unless the Zone controller has some sort of a factory plug in cord to the pumps, it would be, or should be on the electrician to install that wiring.
HVAC guys can do electrical here because many of them have a licensed electrician working for the company. The chances though of a licensed electrician actually hooking up any Class 2 wiring or anything on the load side of the disconnect is probably close to zero.
The bad part about HVAC guys doing work like that is the many of them will just use the existing wiring and pay no attention to requirements for, say, a fused disconnect, or read the sticker for MOPD. They can make the connections well enough, but there is a lot more to doing it than just that... indicated by the number of oversized Breakers I have pulled out of panels serving HVAC units, especially ones that has been replaced with a newer unit and frequently have the need for the larger breaker of the old one
