I have used this humifidier now for several months, and even with the cartridge, I have a white film on all of my furniture, cupboards, glassware etc. I am disappointed in this filter cartridge.

We ordered this filter online from Bed Bath and Beyond for our model H965 Humidifier a Pure Guardian model Humidifier . We bought our Humidifier online also from Bed Bath and Beyond . This filter is the correct filter for the model H965 Pure Guardian humidifier . We have another Pure Guardian humidifier and we know that these filters work very well .It is good to have a filter because it helps to remove all the stuff in water that can effect how well your humidifier works . I recommend using a filter .

This works very well with my humidifier! It is super easy to use; just replace the stock tank cap with this one and you will find no white residue caused by your humidifier until the cap needs to be replaced. Bed, Bath and Beyond sells this for even less than the manufacturer. I only wish there were some way of knowing when the cap needs to be replaced.