I pretty much run the t-stats in the mid 50s all the time and use wood when we want warmer. My wife hates it but it's one way to keep from having huge propane bills. The woodburner is pretty much always warm so that zone never kicks the boiler on. In reality, if we keep the fire fed, the majority of the house is in the mid to upper 60s. The room with the fire gets in the mid 70s at times. We use electric space heat in places like the bathroom when taking showers and other places where the wood heat doesn't get as well(Like my daughter's bedroom). In the winter I regret having such a big house
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