Nobody has the right to enter your residence without a warrant unless you let them.

First off they most likely will call you and inform you that they have noticed an increase in electric consumption and ask if you have added a major appliace? you answer" yes a freezer storage that I got at a yardsale for all the deer that got hunting this year." then they may try to sell you a freezer. Then you tell them " I will think about it, but I am happy with what I have now".