I want a programmable thermostat that will last
I have basic forced-hot water heating (no AC, no heat pumps, etc), with two zones that have independent, battery-powered thermostats.
The battery-powered Honeywell programmable thermostats I purchased about 9 years ago worked fine until this year. This winter, one of them has been going through a set of batteries every few weeks. If I don't notice the "Replace Battery" warning, the "symptom" is a cold house. Fortunately it hasn't happened yet during a trip, so no disasters (yet).
But it seems to be time for new thermostats.
Are there some battery-powered programmable thermostats that will reliably work for more than 10 years??
Is that too much to ask? ... Is a 5 - 10 year lifespan normal?
At one point, the alkaline batteries did leak and I cleaned up the gunk until the leads were nice and shiny again. Is some residual corrosion likely what caused the current problem?
Thanks in advance!