• Home

    • IAQ & Ventilation

    Management of airflow and reduction of impurities from air circulating in homes and buildings.

    Recent

    National Comfort Institute
    Pacific Northwest National Laboratory
    Contracting Business/Kelly Faloon
    Wsa 2023 Baseindeximage
    Photo 280436684 © Cameron Hughes | Dreamstime.com
    Manhattan darkened by smoke from Canadian wildfires.
    Ashrae Title Page 241

    Highlights

    David Richardson/NCI

    A New System Measurement Procedure – 20 Years Later

    April 16, 2024
    David Richardson shares the origins of NCI's System Efficiency Ratio™ testing, and other NCI advancements in HVAC system performance testing.
    265710140 © Ibrester | Dreamstime.com
    Los Angeles Dreamstime L 265710140

    Maximize Your Commercial HVAC Business with Indoor Air Quality Services

    Sept. 26, 2023
    Awareness of commercial building IAQ is higher than it's ever been. Position your commercial HVAC business as a provider of indoor air quality solutions.
    Ashrae Title Page 241

    ASHRAE Standard 241 Ushers in New Era of Air Filtration for Buildings

    July 21, 2023
    Far-reaching standard establishes stronger airborne infection risk mitigation standards for buildings.
    NCI
    You can use a scoop takeoff on branch ducts that want to act like returns and guide airflow into the duct.

    Why Some Supply Registers Act Like Return Grilles

    July 3, 2023
    Let’s look at the field conditions necessary for this problem, why it happens, and a simple solution.
    Armstrong
    A classroom following installation.

    School Improves Indoor Air Quality and Lighting

    March 28, 2023
    Allergy and asthma triggers were reduced and light levels in the spaces more than doubled from 116 to 253 lux.

    Recommended

    Download "Refrigerants Revolution 2024"

    Dec. 18, 2023
    Our industry's accelerated transition to low-GWP refrigerants is kicking into high gear. Get the latest guidance for staying in compliance.

    Down to Business

    July 22, 2022
    C Be Book Web Ads Ps Ds Vert 1200x628

    Down to Business

    July 22, 2022
    A business management guide from Contracting Business.
    SKLafoca/iStock/GettyImagesPlus
    Interstate Traffic

    Visualizing the 'Traffic' of Airflow

    June 17, 2022
    Vehicle traffic on a busy road is a perfect analogy to aid understanding of the way airflow behaves inside a duct system.
    AprilAire
    Model 1830 Dehumidifier

    New HVACR Products: Week of May 16

    May 20, 2022
    This week's gallery highlights humidifiers/dehumidifiers, air handlers/blowers, and louvers/dampers.
    May 4 Gallery Collage

    New HVACR Products: Week of May 2, 2022

    May 4, 2022
    This week's gallery spotlights residential ERVs, a carbon dioxide controller, a smart thermostat for air quality, a HEPA/carbon filtration module, a spot cooler and digital scroll...