07-29-2013, 05:16 PM
Carpets act as a filter and every once in a while it is advisable to empty the filter. HWE is the best method to empty the filter. Once done we can start over with our low moisture maintenance program. How often we need to HWE depends on the traffic and soiling conditions. We have accounts that can go for ever without HWE and others that we need to extract every 6 months.