Vacant apartment high electricity bill!

[Peter Morgan]

Hello,

My apartment has been vacant last couple of months.The first vacant the electric utility bill came around $150 and I noticed that the central AC furnace was on so I turned it off immediately but to my shock the second vacant month the bill came around $250.

Barring a refrigerator nothing is on in the apartment, my apartment utility bill is

lower than that where the appliances including central ac run frequently. Any thoughts on what could be causing this spike in utility bill?appreciate your inputs.

Thanks