Thats what I was thinking too.
Does anyone have any ideas about cooling dog (or pet's) house during hot
summer days?
I know this sounds like a joke, but Im serious.
A small AC unit would probably work, but I was thinking it would work too
good, since it would be cooling a very small space. Also, pet hair would
tend to stop up the filter and evaporator fins.
Since dogs cool by evaporation from tongue, it's not clear to
me that just cooling the air will be as beneficial as it is
to humans. A dog's idea of comfort might be quiet different,
e.g. low humidity might be much more important.
Anyway, what about starting with an old but working fridge?
Take the door off and build out the front to whatever size
you need for the kennel. It would need to be very well insulated
and the entrance would need some type of draft barrier (but not
air-tight or you'll suffocate the pet). Protect the rear
condensor, compressor and electrical from rain, and make sure
you run the thing via a GFI. Thermostat will need changing to
one with a suitable range, e.g. 21C.