If you have a furnace and Heat pump, that the Furnace is electric, the Heat strips can be stuck on all the time, also some people that have heated ceiling exhaust fans, can find them left on. Also, if you are in a area that remote meter readings are used, may want to contact PSE&G to have them verify the meter, due to some of the meter units have been found to be faulty.
Now if you want, you can do like I did, and install a Ted5000 in your main panel, to monitor electric use, to compare to your utility.
Due to Home Depot used a sub to install the Heat pump, I would say that is probably the issue, and to find another company, not call Home Depot to have who knows who come out. Most subs that work for Home Depot & Lowe's do not have the experience that you will find with either a independent contractor that has been in the hvac company, or a local company that has been around, but not one that has the biggest ad in the Yellow Pages, or splashy graphics on their trucks.
One way to find out also if the heat strips are on, get a Clamp-on meter and use it to check Amp draw for both the Heat Pump & furnace.
Now if you want, you can do like I did, and install a Ted5000 in your main panel, to monitor electric use, to compare to your utility.
Due to Home Depot used a sub to install the Heat pump, I would say that is probably the issue, and to find another company, not call Home Depot to have who knows who come out. Most subs that work for Home Depot & Lowe's do not have the experience that you will find with either a independent contractor that has been in the hvac company, or a local company that has been around, but not one that has the biggest ad in the Yellow Pages, or splashy graphics on their trucks.
One way to find out also if the heat strips are on, get a Clamp-on meter and use it to check Amp draw for both the Heat Pump & furnace.