When I started out (Washer on Noah's Ark)
HVAC/R and Appliance Repair were in the same shop. Even when I worked for RCA servicing Whirlpool, we took care of Central A/C, Heating, Ice Machines as well as Appliances.
When teaching refrigeration I had students say "I don't want to do domestic". I reminded them that everyone who buys milk from one commercial reach in has a domestic refrigerator that eventually will need repair.