HVAC Zoning Mistakes for Contractors Destroying Systems with Bad Design - Daniel Carrillo Part 2

In this episode of the HVAC Know It All Podcast, host Gary McCreadie talks with Daniel Carrillo, Technical Sales and Training Expert at Airzone Control, about ducted zoning systems for VRF and inverter HVAC equipment. They discuss how Airzone controls airflow using thermostats, sensors, and modulating dampers to improve comfort and efficiency in different zones of a home or building. Daniel explains how the system avoids high static pressure by adjusting fan speed and damper positions based on demand. The conversation also covers the advantages of ducted zoning over wall-mounted systems, common problems with older zoning methods, and how proper duct design helps improve HVAC performance and airflow control. Gary and Daniel Carrillo discuss how Airzone zoning systems work with VRF and inverter HVAC equipment to improve comfort and airflow control in homes and buildings. Daniel explains how thermostats, sensors, and modulating dampers help manage each zone without creating high static pressure in the duct system. The conversation covers how fan speed changes based on demand and why dampers stay open when there is no heating or cooling call. They also talk about the differences between ducted zoning and wall-mounted systems, common problems with older zoning methods, and how proper duct design helps improve HVAC efficiency, airflow balance, and system performance. Expect to Learn: How Airzone zoning systems control airflow in different rooms using thermostats and sensors. How modulating dampers and inverter fan motors help prevent high static pressure issues. How ducted zoning systems can improve comfort and efficiency compared to wall-mounted units. Why older zoning systems used bypass dampers and the problems they created for HVAC equipment. How proper duct design and airflow control help improve HVAC performance and system balance.   Episode Highlights: [00:00] - Sponsor: Factory Direct Filters ad [00:42] - Intro to Daniel Carrillo in Part 02  [02:21] - How zoning works: thermostats vs. sensors explained [03:58] - Controlling zones via Blue Face thermostat or cloud app [05:56] - What happens when one zone is set too cold [07:28] - No demand = dampers open; fan stops unless constant mode on [10:18] - Ducted zoning vs. wall mounts: regional differences [13:03] - Old zoning problems (bypass, barometric relief) solved by ECM motors [16:49] - How to get free system design (blueprint, zone layout, heat load needed)   This Episode is Kindly Sponsored by: Cintas: https://www.cintas.com/hvacknowitall Cool Air Products: https://www.coolairproducts.net/ Factory Direct Filters: https://www.factorydirectfilters.com/ SupplyHouse: https://www.supplyhouse.com/tm Use promo code HKIA5 to get 5% off your first order at Supplyhouse!   Follow the Guest Daniel Carrillo on:  LinkedIn: https://www.linkedin.com/in/daniel-carrillo-922262305/   Airzone Control - LinkedIn Profile: https://www.linkedin.com/company/airzonecontrol/   Airzone Control - Website: https://www.airzonecontrol.com/as/en/    Follow the Host on: LinkedIn: https://www.linkedin.com/in/gary-mccreadie-38217a77/  Website: https://www.hvacknowitall.com Facebook: https://www.facebook.com/people/HVAC-Know-It-All-2/61569643061429/   Instagram: https://www.instagram.com/hvacknowitall1/  Follow the Podcast on:  YouTube: https://www.youtube.com/@HVACKnowItAll   Spotify: https://open.spotify.com/show/6LCBJGw0EHG03rdWHxUMce  Apple Podcast: https://podcasts.apple.com/us/podcast/hvac-know-it-all-podcast/id1359253455