Commercial Indoor Air Quality - Articles - Page 13

Four Ways You Might Be Using an Air Duct Calculator Incorrectly

For contractors, it’s better to light one candle than to curse the darkness

March 12, 2018

The air duct calculator, or “ductulator,” is a commonly used tool for designing and installing duct systems. Unfortunately, many designers and technicians receive limited instructions on its correct use.

GOLD WINNER Global Plasma Solutions GPS-iClean www.gpshvac.com

Global Plasma Solutions’ Self-cleaning Apparatus Wins IAQ Gold

The award-winning GPS-iClean creates ions without ozone

Jen Anesi

July 18, 2016

No Comments

The GPS-iClean's ease of installation as well as its nearly nonexistent maintenance requirements have earned it gold in the Indoor Air Quality category.

Chris Willette, president of Fresh-Aire UV, said that while many building owners turn to UV for economic advantages, they stay with the technology because of its IAQ benefits.

ASHRAE Validates Effectiveness of UV-C

Study reports UV-C inactivates microorganisms with a kill ratio of 90 percent or higher

Nick Kostora

February 29, 2016

No Comments

Ultraviolet (UV) light has been growing as part of the HVAC landscape for years, specifically within the IAQ arena. ASHRAE's validation is certainly a huge step forward for UV, but many manufacturers believe this technology has already proven its value, as its growth and expansion began years ago.

GOLD WINNER RGFÃ?Â® Environmental Group Inc. REME HaloÃ¢?Â¢ www.rgfairpurification.com

Support, Ease of Installation Put RGF’s REME Halo on Top

The REME Halo™ gets points from contractors for its product support

Jen Anesi

July 20, 2015

No Comments

The REME Halo™ whole-home air purifier from RGF^® Environmental Group Inc. has earned a reputation among contractors not only for its ability to improve IAQ, but also for its ease of installation and stellar customer support.

This graphs illustrates the irradiance levels in the UV-C wavelength (254nm) that result from a 1-meter-long UV-C lamp positioned 12 inches from the surface of a HVAC cooling coil.

UV-C Systems for Commercial HVAC

Technology Provides Continuous Surface Cleaning of Cooling Coils and Drain Pans

Forrest Fencl

July 14, 2014

No Comments

Although UV-C is simple, many contractors are mystified about how UV-C works and how to apply it cost-effectively. These aspects and other misunderstood issues are addressed here .

Top Product Innovations: Cold Plasma Generator

February 24, 2014

No Comments

Designed for use in both residential and commercial HVAC systems, The Phenomenal Aire Cold Plasma Generator (CPG) is an air-purification technology that produces an electric field filled with highly charged ions.

Questions Answered on High-MERV Filters

David Springer

October 11, 2010

2 Comments

Could the shift to better filters mean that they could cause problems with inadequate airflow or greater fan energy use? Are all high-MERV filters equal, or do some have less pressure drop than others? How much better are 2- and 4-inch-thick pleated filters than 1-inch filters? Some tests were run to answer these questions.

How to Measure Duct Static Pressure

Brendan Reid

June 11, 2007

No Comments

Measuring duct static pressure is a fundamental part of diagnosing how a duct system is performing. It’s kind of like getting your blood pressure tested when you go to the doctor.

The Case Of The Water-Filled Ducts

Mark Skaer

October 6, 2005

No Comments

John Logue was stumped. The contractor designs and installs 55 to 80 HVAC systems a year, but he had never run into this situation - a customer complaining that water was coming out of the homeowner's supply grilles.

Sweating Ducts In Crawl Spaces And Attics

Barbara A. Checket-Hanks

December 12, 2003

One Comment

Many building codes in the southeastern United States call for increased attic and crawl space ventilation to fight moisture and related IAQ problems. Craig DeWitt, Ph.D., P.E., challenged that notion at the South Carolina Association of Heating and Air Conditioning Contractors' (SCAHACC's) 2003 Indoor Comfort Science Conference.