It is cold here in Berkeley this morning. Not cold like it is in the rest of the United States. The sun will rise, it will bask into our front room and warm our poorly insulated home. By 9:30 am it will be very comfortable. Right now at 5:50 am I am cold. We don't have a real heating source. We could plug in some electric oil filled heaters.
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Last time we did that it cost us a fortune on the next electricity bill--worst of all it wasn't really that much warmer.
We have an awesome woodstove
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but I'd need to reline the chimney. I have done it before when we lived in Missouri. The main obstacle is there is no place to efficiently get wood. Plus the lining materials to do the job are about $700.
My Berkeley solution will be solar/radiant heat. I just acquired the final expensive part for our solar thermal system. I needed the pump, it had to be strong enough to lift my solar storage water to the peak of our roof. I couldn't afford to buy one since they are about $700. I was gifted two of them, one as back-up. They were from a commercial radiant heat removal. The plumber was going to throw them away.
Now I just need to finish the kitchen so I can install our solar heating system.