On Feb 9, 9:37 am, "Robert11" wrote:
Hello,

Have a gas fired, hot air furnace.

Last year they put in on of these really fancy, 7 day programmable Honeywell
thermostats for it.
Works fine.

Every month or so, I replace the filter.

The thermostat has just come up with a message to change the filter.

Am I correcdt that this message is based purely on time elapsed, and that I
never "reset" it at the
time I changed the filter (don't know how to) ?

In other words, it really does Not monitor the filter's condition at all,
just elapsed time ?

Right ?

Thanks,
B.

Yep it's just a timer really.
You can go here
http://yourhome.honeywell.com/Consum...s/Thermostats/
and find a manual for your unit.

George