Rookies the lot of you. You don't have a winter...We haven't seen a 50°F temp outside since October and have already had 4' of snow for the season and another 38" is forecast for the next 10 days.
Depending on the rooms we are between 65-67° on the hydronic heat and 68° is the usual on the fireplace. Running a 5 zone hydronic heat system in an 8" insulated slab with an 80/20 glycol mix 9" on center. Powered by a Navien 110,000 BTU propane fired boiler. Hydronic or radiant heat is more comfortable than forced air as it produces even bottom up heat vs inconsistent forced air systems that have to constantly cycle on and off.
View attachment 729665
Living room has a Jøtul 370 DV remote thermostat fireplace that kicks on throughout the day as needed. House is passive home rated and to incorporate fresh dry air we run a Lennox Healthy Climate HRV set to 38% RH. Walls are R-38.5 and Roof is R68+. Quadruple paned windows and honeycomb cellular shades keep the nipply nights at bay.***
Seriously, if any of you ever move to a cold climate. The hydronic system with a boiler is crazy efficient. Between the heat, fireplace, stove/oven, and my Blackstone hooked up on a stub outside, I used about 400 gallons of propane ($700) last year in an extremely harsh winter climate. We got snow every month except for July, August, and September and it cost less than $50 a month to heat the place.
TLDR
67°... We like about 67°.