ASHRAE®-Published Report Concludes that KoldLok Brush Grommets Save the Most Energy7 min read

by | Sep 1, 2015 | Press

Scientific test highlights grommet’s energy savings and superior sealing capability.

Albuquerque, NM – September 1, 2015 – Upsite Technologies, Inc., a leader in data center airflow management solutions, is welcoming the results of a recent ASHRAE® -published report on brush grommet effectiveness in sealing cable openings in raised-floor data centers. The 3rd party, independent testing concluded that the performance of Upsite’s KoldLok® Brush Grommets seal best and save data center operators the most energy, enabling significant cost savings.


The full report, titled Plenum-Leakage Bypass Airflow in Raised-Floor Data Centers, documents scientific test findings for five leading brush grommet brands. KoldLok’s Integral grommet was found to offer data center operators significant annual operational expense savings, approximately 50% greater than the next-closest tested competitors’ brush grommets1. Conservative projections based on the report’s findings show that data center operators can enjoy 10 year savings of approximately $960,000 if KoldLok grommets are installed in a 1MW data center.

Due to the high energy cost associated with air leakage in raised-floor data centers, engineers are taking a hard look at practical solutions to reduce bypass airflow and recover stranded cooling capacity. The long-term savings highlighted in the ASHRAE®-published report provide clear evidence to choose the grommet that yields the greatest energy savings while providing the lowest levels of leakage. Based upon the research findings and calculations summarized in the report, the KoldLok® Integral brush grommet has been identified as the best-sealing and most cost-effective option.

“The reduction of bypass airflow is still an important issue with data center operators,” said Peter Crook, President of Upsite Technologies.  “It is gratifying to see the energy and operational savings of the original Upsite KoldLok® grommet highlighted in the report.”

A condensed version of the report can be downloaded from Upsite’s website. A paid version of the full report is available in the ASHRAE library.

In addition to KoldLok® being identified as the best-sealing brush grommet, Upsite Technologies’ AisleLok® Modular Containment was named winner of the “Bright Idea” category at the 2015 Modern Infrastructure Impact Awards earlier this year. The awards recognize the top products and technologies in the essential areas of technology that Modern Infrastructure covers.


About Upsite Technologies
Upsite Technologies®, Inc. is an industry leader in data center airflow management and cooling optimization. Upsite provides a full suite of products and services designed to optimize data center cooling systems, allowing managers to maximize cooling capacity while reducing energy costs. Upsite distributes its award-winning line of services and products, including KoldLok®, HotLok®, and AisleLok®, through leading channel partners in the data center industry throughout the world.

Upsite Technologies, Inc. was founded in 2001 by Ken Brill, creator of the Uptime Institute, a think tank dedicated to understanding, improving, educating and expanding awareness of uptime and inefficiencies in data centers.


[1] Based on incremental savings over those available through use of the test grommets exhibiting the highest levels of leakage on an area-corrected basis



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