When you have an overly cold home there is no need to turn your heating unit all of the way.
There is one thing you can use to keep those electric bills down and get your home nice and warm. That is to buy a portable heating system and run it on the lowest setting while running your central heating plan how you normally would. You won’t have to crank that heating unit anymore! The heat from the portable area heater on the low setting will make it so that it evens out the offset of the hot and cold temperatures in your home. Another plan would be to invest in HVAC zone control! But to do that and buy a HVAC zone control, expect to pay a lot of money. Because zoned heating and air conditioning systems are far from cheap! They are nearly double the price of what a normal residential heating and a/c plan is. My advice to you is to do what I am saying and get yourself a portable area heater to help heat your overly cold home with the uneven hot and cold temperatures. The reason for overly frosty homes most of the time is because there is something off with the build of the home or the general air flow of the central heating and air conditioning system. But a portable area heating system can assist in making it so you do not have to go crazy to get the perfect temperature in your home.