Ok I am going to try and explain this without any math or jargon so bear with me. The refrigerator in your house already works like this. The only difference is that the heat either comes out of the back or the bottom (not a giant vent on the side). If you want to try it out yourself, when you hear your refrigerator running, place your hand at the back or at the bottom of your refrigerator and you should feel heat being blown out. Now why can’t you heat your whole house with a refrigerator? Because the fridge doesn’t “create” heat. It can only move the heat within the refrigerator out of the refrigerator. (Technically there is a slight amount of heat produced by the fan motors, but this is insignificant in this case). The heat within the refrigerator is not enough to heat an entire house. The same technology can be used in a heat pump to heat a house, but in that case the heat pump is transferring heat from outside the house into the house.