In this episode of the HVAC Know It All Podcast, host Gary McCreadie talks with Christopher Rystedt, Technical Sales and Trainer at Airzone Control, about air distribution and zoning with VRF and inverter systems. In Part 2, they discuss common applications such as hotels and residential homes, and how zoning can work with multiple brands and system types. Christopher explains how modern zoning avoids bypass dampers by adjusting fan speed and system capacity based on demand. They also cover ventilation modes, zone weighting, and how airflow is balanced across different spaces. The conversation wraps up with setup tips, training options, and how zoning can help manage refrigerant limits and reduce system size and cost.

Gary and Christopher discuss how modern HVAC zoning systems work with VRF and inverter equipment in both commercial and residential applications. They explain how systems can control multiple zones or units from one platform, even across different brands. Christopher describes how proper duct design and variable fan speed help avoid the need for bypass dampers while maintaining correct airflow. They also cover ventilation settings, including local and system-wide fan operation, and how zone weighting helps balance airflow based on duct size. They finish by talking about system setup, training resources, and how zoning can help reduce refrigerant use and overall system costs.

Expect to Learn:

• How HVAC zoning systems can control multiple rooms using VRF and inverter equipment.

• How one platform can manage different brands and types of HVAC units together.

• Why proper duct design and variable fan speed help eliminate the need for bypass dampers.

• How ventilation modes work at both the zone level and system level to move air.

• How zone weighting and system setup help balance airflow and improve overall performance.

Episode Highlights:

[00:00] - Sponsor: Factory Direct Filters ad

[01:08] - Intro to Chris Rystedt in Part 02

[02:10] - Main applications: Hotels, villas, and residential

[04:34] - Airzone history: Spain (1997), North America (2021)

[06:57] - Inverter systems vs. traditional bypass dampers

[09:21] - Ventilation modes: Local and global settings

[13:29] - Christopher's role: Technical sales and trainer

[18:33] - Training resources and A2L refrigerant benefits

This Episode is Kindly Sponsored by:

Cintas: https://www.cintas.com/

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 Christopher Rystedt:

LinkedIn: https://www.linkedin.com/in/christopher-rystedt-62258597/

Airzone Control - LinkedIn: https://www.linkedin.com/company/airzonecontrol/

Airzone Control - Website: https://www.airzonecontrol.com/as/en/

Follow the Host:

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:

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