We added 3 zones to our 2 floor, 1500sqft condo in December and our January electric bill doubled to over $1000.00 here in Northern NJ. How is this possible?
In December we had one thermostat on the main floor, and had a local HVAC guy zone it so there is one upstairs, one in the old location (80% of the square footage) and one for 2 the back bedrooms.
I work from home using the back bedroom as an office so 80% of the house is at 65 degrees all day and the top floor bedroom goes to 70 degrees at night with the rest of the house at 65.
At the same time we added an attic floor and filled it with storage so the insulation factor should have increased quite a bit.
The HVAC guy seems kind of young and new, so any advice to point him in the direction to fix the problem would be greatly appreciated.