3 family home - PECO Public Light bill crazy high!

[Pat Hamilton]

I have a 3 family building which I started renting out in the summer. My PECO bill for the public light account has been crazy high for the past few month (this month being $650, during the summer it was $100).  The only thing I can think of is that the wiring was not done correctly and I'm paying for the tenants heat.  I'm not sure if there is a heating unit in the hallways, I need to check it out.  I know I provide light and the fire alarm system.  Once I make it out there and walk through the building, I will check to see if there are heating units in the hallways.  If so, I want to turn them off.  Is this okay?  Do I have to heat the hallways?  Maybe it's the hot water heater????