Joe filter came out and did my monthly service. I was totally impressed with their attention to detail and their knowledge about the products in my home. How wonderful to have the batteries replaced in all 9 of my smoke alarms, 5 bags of salt added to my water softener. Vacuum cleaned out and shined up to look like new. That includes being able to see the white on the filter. 4 ac/heat filters replaced with the filter of my liking. The best part was I had a question wether they could tell if my RO system was working correctly. They had a tester with them and I had the answer in 20 seconds.
My suggestion is that you call for your introduction appointment and experience what I did with Joe Filters team.