I wanted to give an update on buying 5 new vacuums... I looked at IVS, JE Adams and Doyle. IVS and JE Adams use the 4 vertical sock filters, while Doyle uses 2 pleated filters (like a shop vacuum). I called Doyle's customer references and they were very positive! I would rather clean 10 pleated filters than 20 vertical filters! Starting in September 2023, I worked with David VanGorder to design them (240 volts with a Dixmor LED6 timer, 2 motors, 2" air inlet and custom decal). They arrived in February 2024 and installed on March 12th.
Though more expensive compared to IVS or JE Adams, they are very heavy-duty and well-made! Customers are amazed at the suction! I used my vacuum gauge, and suction is just over 100 Inches of Water.
Cleaning vacuums is my least favorite job, so I'm always looking for ways to speed it up! I bought a set of spare filters so I can quickly swap out the dirty filters. I clean them 1x/week. The BEST way I've found to clean them is to bang the filters inside a rubber trash can (less noisy), then use a stiff scrub brush to remove most of the hair and lint, then use my Diskin Air Dryer to blow out the residual dust!
I'm VERY happy with my new vacuums and dealing with David VanGorder at Doyle Vacuums was a very positive experience!