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    • IAQ & Ventilation

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

    Highlights

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    NADCA Issues Trademark Fraud ALERT

    Nov. 18, 2024
    NADCA does not certify or sell equipment and does not endorse individuals or companies.
    NCI/David Richardson
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    Create Air Upgrade™ Leads with Static Pressure Testing

    Sept. 17, 2024
    Unless you measure static pressure, Air Upgrade™ opportunities remain hidden.
    NCI/David Richardson
    choked_flex_duct

    5 Tips to Improve Flexible Duct Installations

    Sept. 3, 2024
    Share these tips with your installers, and dare to install your duct systems correctly
    David Richardson/NCI

    Two Overlooked Supply Register Traits

    May 21, 2024
    Many in our industry overlook the importance of supply registers.
    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.

    Recommended

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    Quiz: Refrigerant Recovery & Evacuation (Part 2)

    Nov. 19, 2024
    How much do you know about proper recovery and evacuation procedures?
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    BOSCH HOME COMFORT
    Rob Minnick/NCI
    Photo 169890140 © Martina Hanakova | Dreamstime.com

    eBook: Mastering Essential HVAC Procedures

    April 24, 2024
    The Best of David Richardson, Vol 1, plus Bonus article from Rob “Doc” Falke
    National Comfort Institute

    Why HVAC and Home Performance Go Together

    April 1, 2024
    The integration of Home Performance into HVAC provides a smarter approach to better serving customers.
    Pacific Northwest National Laboratory

    QUIZ: Commercial Air Systems

    Feb. 20, 2024
    The experienced commercial HVAC technician knows the differences between types of commercial air systems, their placement and pre-existing conditions.
    Contracting Business/Kelly Faloon

    AHR Expo 2024: Use IAQ Products to Lead in Your Market

    Jan. 23, 2024
    Consumers want IAQ products, so be proactive and master the selling of IAQ accessories.