On Dec 6, 7:31 am, Dick wrote:
I have a Triton Big Bear air filter on my heating system. I just
installed a new programable thermostat that monitors the number of
hours on the air filter. The most information I can find is to change
the filter at the beginning of each season. My question is. Can anyone
tell me what the recommended change is in hours so that I can make use
of this feature on the Thermostat?

Every house is different, in some it might last a year in some 3
months, change it when its dirty.