I had a renter, well not me, my ex...
they claimed high electricity bills, must be a loss of somewhere...
easy to close main circuit and check if meter is running, no?
but, I passed the house a few times over the weeks and months and airco was on, all over, almost 24/7...
well, it is the type that makes a loud noise, the compressors, that is...
a next renter had very low electrical bills... they only used fans....