So I am an average guy (Joe ShoeMo) and after browsing GoingDuctless for a while, I decide to see who does installations in my area - Central Washington. So I put my zip code in (98953) and it shows only one installer within a 100 miles of me (because it shows only Master Installers). So then I mosey over to the right hand side of the page and select the link for "Washington Installer" - that takes me to the featured "Installer Spotlight" (who is about 180 miles from me). If you read the text on that page, there is an inconspuous link for those who don't live near the featured installer company and that link takes you... BACK where you STARTED.
After a certain amount of experimentation, you decide that what you need to do is select "Download List" which opens a spreadsheet of 1030 installers. Then if you want a list in your area, you need to go into the zip code column and unselect all the zip numbers that don't apply or (more logically) sort the 1030 companies by zip code which at least gives a logical list that can be manipulated. After messing around with it for 15 minutes or so, I came up with a list of 20 compainies located within about 40 miles. A user friendly experience - Not. How about something similar to the technician search on the PTCS site: you put in a zip code and limit the selections to those within 5, 10, 25, or whatever miles and the search gives all technicians within that peremiter - such a deal.