Although it's not the off season yet, I have a natural gas, two zone, hot water boiler that is used for winter time only. No pilot light, all electronic ignition. I have a seperate hot water tank for hot water.
Can I safely turn off all power to furnace/zone control switch (emergency red switch/kill switch at top of stairs) or just turn off the t/stat, or both? or just leave everything on during the off season?
Basement is dry and has a dehumidifier in case of humidity over 60%.
I have googled this question and there are a lot of different theroies out there.
Would like to throw this question out to the hvac diy community to see what some of you think about this.