Where I live, automobile aircons are usually rated in tons (of ice).
Whereas house aircons are rated in BTU/h, kW or HP.
Now I know that one ton is pretty close to 12000 BTU/h and 3500 W,
but how is the HP rating defined? For example, the system in my
home office has specs: 12000 BTU [sic], 1.5 HP and 3200 W cooling.
Now 1.5 HP is not 3200 W, nor is the electrical input (1 kW).
Is it some compressor power, pulled out of a wooly hat or what?