While few people question that backpacks can speed up vacuuming, many cleaning contractors wonder if this advancement comes at the expense of effectiveness. This issue was evaluated several years ago in an older study that is still considered credible and of value today. In fact, because so many backpack systems have been improved since the study was conducted in 1997, it is possible the results today might even be better.*
The researchers at QUEST (Quality Environmental Services & Technologies) sprinkled 100 grams of soil onto a 36-square-foot commercial-grade carpet. The soil was worked into the carpet using a carpet rake. The areas were then vacuumed using a two-motor upright and a backpack. After vacuuming, QUEST researchers calculated the percentage of soil removed from the carpets by weighing the filter bags. The results were:
- The upright removed between 87.9 and 94.9 percent
- The backpack removed between 91.3 and 96.1 percent.
Check back next week to learn how to select the ideal backpack vacuum for your application.