However, there are some indicators that interest in backpacks is increasing, such as:
- The technology has been refined and significantly improved over the years
- Today’s systems are much more ergonomic and comfortable to wear and use compared to earlier models
- The enhanced worker productivity that results from using a backpack is now undisputed.
As to the last point, ISSA published the first worker productivity studies in 1999 (now known as the 540 Cleaning Times) comparing a backpack vacuum cleaner to an upright machine. Those studies compared a 14-inch, two-motor upright vacuum cleaner with a 14-inch (floor tool) backpack vacuum. These were the results:
- The upright machine was able to clean 3,240 square feet per hour
- The backpack was able to clean 7,407 square feet per hour.
Check back next week to learn whether or not backpack vacuums are more thorough than alternative cleaning methods.