How long to set filter time on Thermostat? Does anyone how many hours I should set my filter alert thing...

Does anyone how many hours I should set my filter alert thing on my up to date electronic thermostat? It's made to give me a interest of when I should change my furnace filter. It can be set from 0 to 1950 hours surrounded by 50 hour increments. I just changed my filter very soon. Thanks for all the back. I used a normal 16" x 25 "
gas furnace filter.
Why won't my dryer warmness up?
Answers:    The thermostat is keeping up near the "run time" so the other answer is on the right track but forgot to put in a multiplier to correct for average run time. I use 60% when I set filter timers
30 days X 24 hours=720X .6 (60%) =432 hours
How does cotton wool-like substance work to insulate...
It is recommended that you changeover your filter every 30 days. There are 720 hours in a 30 daylight period, so I would set it for 700 hours.