Review on Fette Filter - High-Efficiency Pre-Motor and Post-Motor HEPA Vacuum Filters Compatible with Dyson DC14. Compare to Part # 901420-01, 905401-01, 923480-01. (Combo Pack) by Tom Timmer

It's finally time to change the filters in my DC14 Dyson. I was happy to find them at Revain at a reasonable price. A post filter is easier to install than a pre filter. Be careful what you use to open the pre-filter drawer at the bottom of the vacuum cleaner. It was a bit difficult. I noticed a significant increase in suction power, a decrease in the smell of the vacuum, and a decrease in the heat emanating from the vacuum.