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HVAC Know It All Podcast

HVAC Know It All Podcast

Di: Gary McCreadie - Licensed Refrigeration/HVAC Technician
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 The HVAC Know It All Podcast, hosted by HVAC and Refrigeration tech Gary McCreadie, is an industry leading show that focuses on education within the HVAC and Refrigeration Trade - Such as HVAC Maintenance Tips.2025 Economia Ricerca del lavoro Successo personale
Episodi
  • How Airflow vs Static Pressure Mistakes & Bad Filters Are Killing HVAC Systems - Eric Ruggles Part 1

    How Airflow vs Static Pressure Mistakes & Bad Filters Are Killing HVAC Systems - Eric Ruggles Part 1
    Apr 24 2026
    In this episode of the HVAC Know It All Podcast, host Gary McCreadie is joined by Eric Ruggles, Director of Engineering at Ritchie Engineering Co., Inc. (YELLOW JACKET), to discuss the key differences between airflow and static pressure and how to measure both correctly. Eric explains how airflow is calculated using air velocity and duct size, while static pressure is measured across system components to understand system performance. The conversation covers tools like hot wire anemometers and manometers, along with proper testing methods such as duct traversing and pressure tip placement. Gary and Eric also explore common issues like high static pressure caused by poor duct design, dirty filters, or oversized equipment, and how these problems can impact overall system efficiency. In this conversation, Eric explains the differences between airflow and static pressure in HVAC systems and how each one is measured. He describes how airflow is based on air speed and duct size, while static pressure shows how much resistance the system has. Eric and Gary discuss tools like hot wire anemometers and manometers, along with proper testing methods such as duct traversing and pressure tip placement. They also cover how issues like dirty filters, poor duct design, and system restrictions can raise static pressure and reduce overall system performance and airflow. Expect to Learn: How airflow and static pressure differ and why both matter in HVAC systems. How to use tools like hot wire anemometers and manometers for proper testing. How duct traversing helps get accurate airflow measurements. How static pressure testing can identify restrictions in filters and ductwork. How issues like dirty filters, poor duct design, and closed vents affect system performance. Episode Highlights: [00:00] - Sponsor Ad: Factory Direct Filters [00:42] - Intro to Eric Ruggles in Part 1 [02:34] - Static pressure and airflow are different, and need different tools [04:18] - Eric: Air speed units (ft/min, m/s) & calculating volume [07:15] - Hot wire anemometer: traverse duct, app calculates CFM [10:56] - Static pressure: positive on supply, negative on return [16:48] - Total external static: check return & supply sides separately [19:42] - Remove filter to test restriction; 1" high-MERV vs. 5" filter [23:61] - Plugging vents raises static, harms the system 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 Eric Ruggles on: LinkedIn: https://www.linkedin.com/in/eric-ruggles-28a84424/ Ritchie Engineering Co., Inc. (YELLOW JACKET): https://www.linkedin.com/company/ritchie-engineering-co-yellow-jacket-/ Ritchie Engineering Co., Inc. (YELLOW JACKET) - Website: https://yellowjacket.com/ 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
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    25 min
  • HVAC Business Growth for Married Entrepreneurs to Build Legacy Over Safe Careers with Cody Brasseal & Emily Brasseal

    HVAC Business Growth for Married Entrepreneurs to Build Legacy Over Safe Careers with Cody Brasseal & Emily Brasseal
    Apr 22 2026

    In this episode of the HVAC Know It All Business Edition Podcast, co-hosts Gary McCreadie and Furman Haynes from WorkHero sit down with Cody Brasseal, President of Acadiana Comfort Systems and Emily Brasseal from Acadiana Comfort Systems. As a husband-and-wife team, they share their experiences of building a successful HVAC business while navigating the challenges of balancing work and family life. The conversation dives into their journey, offering valuable insights into overcoming obstacles such as office and field friction, understanding the importance of family support, and creating a positive company culture.

    Cody has extensive experience in the field, while Emily joined the business after working as an occupational therapist. Together, they've built a thriving business and share their personal and professional journey of working together as a married couple, raising a family, and managing the challenges of owning a small business.

    Expect to Learn

    - How to balance family life and running a business together.

    - The importance of empathy and clear communication in a family-owned business.

    - Strategies for overcoming friction between office and field teams.

    - Tips for ensuring the success of a family-run HVAC business.

    Timestamps:

    [00:00:00] – Introduction

    [00:01:35] – Early Business Challenges

    [00:03:11] – The Fluid Nature of Business and Family Life

    [00:05:18] – The Importance of Family Support

    [00:07:06] – Leadership and the Decision to Bring Emily into the Business

    [00:10:23] – Transitioning from a Job to Full-Time Business Owner

    [00:13:58] – Overcoming Field vs. Office Tension

    [00:16:24] – Managing Tension Between Office and Field Staff

    This Episode is Kindly Sponsored by:
    PartsTown: https://www.partstown.com/hvac-parts

    Follow our Guests Cody Brasseal & Emily Brasseal and their Company:

    • LinkedIn: https://www.linkedin.com/in/cody-brasseal-0355421ba

    • Facebook: https://www.facebook.com/cody.j.brasseal/

    • Company Website: https://acadianacomfort.com/

    • Company Facebook: https://www.facebook.com/AcadianaComfort/

    • Company Instagram: https://www.instagram.com/acadiana_comfort/

    Follow Gary McCreadie:

    • 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 Furman Haynes:

    • LinkedIn: https://www.linkedin.com/in/furmanhaynes/

    • WorkHero: https://www.linkedin.com/company/workherohvac/

    • Instagram: https://www.instagram.com/workhero__/
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    19 min
  • HVAC Compressor Failures Caused by Airflow, Charging, and Installation Errors - Matthew Waxer Part 3

    HVAC Compressor Failures Caused by Airflow, Charging, and Installation Errors - Matthew Waxer Part 3
    Apr 20 2026
    In this episode of the HVAC Know It All Podcast, host Gary McCreadie talks with Matthew Waxer, HVAC/R Mechanic at Kilmer HVACR Services Inc, about the key factors that impact system performance and compressor life. In Part 3, they focus on the importance of proper maintenance, airflow, and system setup from installation through operation. Matthew explains how correct airflow, refrigerant charge, and fluid mixtures like glycol all play a role in system efficiency and reliability. They also discuss common field mistakes such as poor airflow around equipment, incorrect glycol ratios, and refrigerant loss during servicing. The conversation wraps up with practical tips on maintenance practices, using probes instead of gauges, and avoiding contamination to keep systems running properly over time. Gary and Matthew discuss the key steps needed to keep HVAC systems running properly, focusing on maintenance, airflow, and correct setup. They explain how proper airflow across indoor and outdoor units is critical for system performance and how poor installation choices can lead to long-term issues. Matthew highlights the importance of correct refrigerant charge, coil sizing, and fluid flow in systems using glycol, including how improper mixtures can reduce efficiency or cause freezing problems. They also cover common service mistakes like refrigerant loss and contamination when using gauges. They finish by sharing practical tips such as using probes, checking airflow, and following proper maintenance practices to protect system life. Expect to Learn: How proper maintenance helps extend the life of HVAC systems and prevent costly breakdowns. How correct airflow across indoor and outdoor units affects system performance and reliability. Why proper refrigerant charge and coil sizing are important for efficient operation. How glycol mixtures impact heat transfer, flow, and freezing protection in fluid systems. How using probes and careful service methods can reduce refrigerant loss and system contamination. Episode Highlights: [00:00] - Sponsor: Factory Direct Filters ad [00:42] - Intro to Matthew Waxer in Part 03 [02:13] - Why maintenance matters for compressor life [03:30] - Airflow setup: Indoor coil sizing & outdoor obstructions [05:32] - Glycol systems: Mixture %, freezing point, refractometer use [10:07] - Manifold vs. probes: Refrigerant loss & contamination risks [15:33] - Outro & next episode 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 Matthew Waxer: LinkedIn: https://www.linkedin.com/in/matthew-waxer-b4a62360/ Kilmer HVACR Service Inc - Website: https://kilmerservice.com/ 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
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    16 min
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