Howdy, I have a year old Whirlpool fridge. Water filter change light did its green-yellow-red routine right at six months, and again at one year. I am strongly suspecting now that this is a timer, and their is no H2O quality being measured. It would be surprising if their was a conductivity meter in an $1100 fridge. And the filter was around $50 at Lowes. Just wondering (yes, I live alone! Too much time on my hands!) Carl
- posted
15 years ago