Filtes: What is the difference between an HMC filter and one that is not HMC?
151670
Hoya Standard filters have one layer of anti-reflectant coating to each surface of the glass to suppress reflection and increase light transmission. HMC (Hoya Multi-Coated) have 3 layers of anti-reflectant coatings on each surface to reduce average reflection down to 3.0% or less. Hoya S-HMC (Super HMC) also have 6 layers of anti-reflectant coatings. Finally, the Super HMC PRO 1 is made of thinner glass (only 1mm thick), also with 6 layers of anti-reflectant coatings bonded to each surface of the glass.
291019
I used to use the FQSLF filters when I couldn't find the FQSVF locally, and they were interchangeable as far as fit. But the last set of FQSLF I bought (on Amazon) did not fit because the center hole was noticeably smaller in diameter.
1229415
Sorry can't really answer this accurately because they sent me the wrong filter.
785382
One has a cotton filtration underneath the other does not. Buy the cheaper of the two.
2099960
Yes, KDF identifies a filtration media within the filter. You can look up KDF on the web for further information.
967636
John I would also like to know what it is. However, most of these types of filters I have seen generally have a rating of 3. It's about equivalent to the old fiber glass filters, low dust pickup but high flow. I have a 10x6x1 box (in addition to the others) in my house and it is IMPOSSIBLE to find an actual filter for it. Even the builder put in one of these types of filters. I've been here for 10 years now and haven't had any issues with my system or this type of filter for just this one.
1429865
The Filtron system is sturdier. Our Toddy cracked after about six months of regular use. Both made delicious cold brew.
1118236
The manual doesn't show different type of filters, just the supplied one. Replacement filters are available. Cleaning the filter is easy. I don't have that type of dust.
413297
Look for same MERV (Minimum Efficiency Rating Value) ratings. Regardless of capacity claims, this is an industry standard rating system that allows you to compare filters made by different manufacturers.
1394989
The filters (2) are proprietary and only available from Trend. They are high quality foam type filters but I don't think they are hepa rated.I use the Airshield for woodturning and find it to be very effective for air filtration and face protection.
1719737
The filter requirements is a bit confusing. Three HEPA filters and three carbon filters are required for the larger room model # HAP756-U which I recently purchased and currently using. (Two of both the HEPA and carbon filters are required for the smaller room unit HAP726) Three true HEPA filters were included with the my unit and already installed (there are no discernible marking on the installed filters I can detect indicating a filter model number). However, there were no carbon filters installed or included with my purchased unit but I did purchase a pack of 4 which I installed when I set up my unit. I purchased a package of 2 Holmes make HEPA replacement filters (HAPF600D - B Filters) at the same time. Had I researched this better, I would have purchased the same box of 2 filters, plus 1 lone filter (same model #) since the unit requires that all three filter be changed when the red light indicates the filters be replaced. I am not aware of any distinction between an HAPF600 and an HAPF600D filter and I couldn't find this out on the Holmes website, either. Perhaps (but not sure) the "D" version removes either different allergens or more allergens from the air. As far as the "B" designation, I believe this identifies these as HEPA filters versus the "C" designation applied to the carbon filters.
277556
Yes, they are the same filters. The individual filters do not have a letter at the end. The ones that have a P at the end come in sets of two and the ones with a T come in a set of three. I hope this helps.
2208611
check out Ekobrew single serve paper filter. I ordered this item. Will let you know results later when order arrives.
199842
These are not true HEPA filters; they are HEPA-type filters. True HEPA filters are available at http://www.amazon.com/Holmes-HAPF30D-Replacement-HEPA-Filter/dp/B0045LQCIO.
1593350
No, both go through the same hole. There is a handle that you turn on the unit that switches it to filtered/unfiltered.
827568
According to the user manual, you can use either as they are shaped the same & will install the same way. You just don't get the benefit of the hepa super filtering.
119525
I've only ever had the "ceramic" filters. When I ordered my filters they came with the pf-4 fluoride filters. The ceramic filters are NOT the fluoride filtration system, which is an aluminum-type filtration that attaches to the ceramic ones. There is a very good review about the aluminium filters.