We live in a house that has a heat pump system, for AC and heat, with a second-stage heating coil for aux/emergency heat. It frequently gets down to below 30 degrees in our climate, at which point the heat pump is essentially ineffective and the electric coils switch on.
That being the case, I'd like to set up space heaters in one or more rooms in our 2-story house, possibly a quartz infrared heater like you see on the market nowadays, to supplement our central heat and to get the heat where it needs to be. I hear a lot about how space heaters are a waste and don't save you any money/energy, but that seems to be a generalization, and I'd like to hear from someone who HAS used supplemental heat such as space heaters to keep their home warm without over-taxing the heat pump or using a huge amount of electricity.
Would a space heater help us in the winter months, or would it be wasteful?