Durafil ES Low Pressure Drop Filter
Camfil Farr, world leader in air filtration and clean air solutions, recently sought to develop a V-style
(commercial and industrial) air filter with industry’s lowest life cycle cost. A second goal was to reduce
the energy used by an HVAC system by 20% or more compared with any competitive product by engineering a very low pressure drop filter.
It is the lowest life cycle cost filter available. Designed by a team that included customers, scientists and filter specialists, it also has a very low
pressure drop, and can reduce the total energy required by the HVAC unit by at least 20%, and often as much as 35%.
The implications for industry is huge: this low pressure drop filter technology may prove to be the most significant energy-saving strategy available to US business.
Low Pressure Drop Filter also
has Lowest Life Cycle Costs
The Durafil ES filter radically changes how air is cleaned in a commercial or institutional setting.
The product has significant advantages in terms of immediate reductions in facility fixed costs.
Durafil ES is a drop-in replacement for any standard V-shaped filter. But the similarities end there.
Four characteristics distinguish Durafil ES filters.
First, this filter technology reduces the total energy consumed by the HVAC system by 20-35% compared
to any competitive (V-style) product. This savings is produced by a patented radial inlet and outlet, which
generates a much lower pressure drop profile.
The significance of very low pressure drop is considerable: there is 30% more open area on the
filter inlet of the Durafil ES, and 60% more on the outlet, compared to conventional V-style filters.
This greater open area is key to the lower pressure drop condition.
Camfil Farr has also developed a new height-to-pleat spacing configuration. Using the same amount of
media, with more pleats per inch, the result is greater active filter area.
Durafil ES uses a wet-laid, microfine fiber “Energy Star” media. This media maintains its high efficiency
performance throughout its service life, and is in marked contrast to electrostatically charged, synthetic
media, whose efficiency drops quickly in use.
Finally, Durafil ES is rated “five star” by the Energy Cost Index (ECI) Program. A top 5-star
rating indicates the filter is the most energy-efficient, and longest-lasting, available.
One of the construction features unique to the Durafil ES is a built-in prefilter spacer section.
This feature benefits installations where a prefilter is mounted directly to the face of the filter. In these
instances, the spacer eliminates airflow blockage, and the high pressure drop that results.
This problem is universal with traditional V-style filters, and produces an energy penalty of $50 per filter per
year. The advanced engineering of the Durafil ES eliminates this issue, and this expense,
immediately reducing energy costs by $50 per filter, per year for installations where a prefilter
mounts to the filter face.
The Durafil ES was engineered for facilities with large AHUs (air handling units), including hospitals,
food and beverage processors, pharmaceutical plants, colleges and universities, offices, and many
industrial environments. It is the “greenest” filter available, producing substantial, recurring energy
savings. It also lasts longer than any final filter and has less total environmental impact.
Recently, the cost of oil rose to an all-time high of $120.19 per barrel. Companies seeking to
reduce energy expense will find the energy advantages of Durafil ES filters are both
immediate and significant.
Durafil ES can be a valuable tool for meeting the requirements of the US Green Building Council (“LEED”)
for efficiency, energy savings and reduced disposal impact. Standard and enclosed box versions of the
filter are available in four sizes. They are manufactured in MERV 11, 13, 14 and 16 ratings. Durafil ES is
guaranteed up to 10” w.g and is UL Class 2. It is backed by Camfil Farr’s Performance Guarantee for
the life of the filter.
Detailed test data regarding this low pressure drop filter
technology can be made available to qualified inquirers.
Commercial Air Filters