They do it themselves.
What you have to do is solicit businesses to change out their filters.
The ones that have 30 rooftop units on each buliding.
Some units take 2,4,and 8 filters per unit.Even more.How do you change air conditioning filters in your home?I open up the little door and pull the old one out and put a new one in.
I buy a box of a them and it lasts a few years.
If you want to start a business doing this, you'd be better off thinking about a business maintaining AC and heating systems. Manufacturers try to make it easy for these to be changed so owners change them.How do you change air conditioning filters in your home?A suggestion...combine filter changing, watering plants, take the trash out, clean the aquarium, walk the dog...you know...things we hate to do!
