We've been running the logs for a while, then turn them off when the thermostat reaches 70°F. When it gets to 65°F we turn them back on. I'm running the ceiling fan in when the logs are on. Note to self: clean the blades BEFORE reversing the rotation direction. Or, maybe, note that a real quick way to clean the blades is to reverse the rotation. But the rest of the room has mats of cat fluff spread everywhere.
I do feel thrifty in that i figured out that the HVAC system has a "circulate" function. By turning that on we could circulate the heated air throughout more of the home. I'm not sure what to do tonight. We let the temps drop down to 60°F at night, but the heater is going to need to run frequently to make up the 50°F to 60°F difference with outside.
I haven't had a heat pump as a heater since becoming an adult. The heat in Philly was unstoppable steam heat. It ran, and you managed the temperature by opening windows. In San Francisco we had gas heat. In Mountain View there were several electric base boards. I grew to distrust all of them, and we just used a space heater.