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HVAC Know It All Podcast

HVAC Know It All Podcast

By: 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 Career Success Economics
Episodes
  • Why a Thicker HVAC Filter Can Have Less Pressure Drop Than a One-Inch Filter - Part 1
    8 Oct 2026
    In this episode of HVAC Know It All, host Gary McCreadie talks with Chris Howells, Senior Training & Development Manager at AprilAire, about applying indoor air quality solutions during shoulder seasons and making filtration part of a complete HVAC approach. They cover humidity concerns, filter selection, MERV ratings, pressure drop, airflow, and ways technicians can explain system performance to homeowners. Chris draws on his work educating contractors about filtration and indoor air quality. He explains why increasingly sealed homes and modern variable-speed equipment require technicians to assess the full system, including duct design, filter surface area, and delivered airflow, before recommending higher-efficiency filtration. Key Takeaways How to use shoulder-season humidity and comfort concerns to start an ethical indoor air quality conversation. Why indoor air quality solutions should address human health and comfort rather than focus on selling products. The relationship between filter MERV rating, pressure drop, surface area, and delivered airflow. How deeper media filters can provide more filtration surface area without equating filter depth with restriction. Why variable-speed ECM motors can be more affected by restrictive filters than older single-stage PSC motors. How static-pressure measurements and visual evidence can help homeowners understand filtration-related system issues. Key Timestamps 00:00 – Factory Direct Filters Ad 00:42 – Episode overview and Guest introduction 04:14 – Providing indoor air quality solutions during shoulder season 06:25 – Dehumidification as the first stage of cooling and its role in comfort 10:00 - AprilAire and their filtration 11:57 – One-inch filters, equipment protection, and the impact of pressure drop 13:32 – How modern variable-speed motors respond to restrictive filters 17:59 – Filter surface area, depth loading, and comparing one-inch and three-inch media 21:31 – Showing homeowners static-pressure readings and using a practitioner mindset 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 and His Company on: Chris Howells - LinkedIn: https://www.linkedin.com/in/chris-howells-5aa32b64/ AprilAire - LinkedIn: https://www.linkedin.com/company/aprilaire/ AprilAire - Company Website: https://www.aprilaire.com/ Follow the Host on: LinkedIn Profile: https://www.linkedin.com/in/gary-mccreadie-38217a77/ LinkedIn - HVAC Know It All: https://www.linkedin.com/company/hvac-know-it-all-inc 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 Podcasts: https://podcasts.apple.com/us/podcast/hvac-know-it-all-podcast/id1359253455
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    27 mins
  • How an AI Phone Agent Created $200K in New Business for Plumbing Companies | Vern Crawford
    7 Oct 2026

    In this episode of the HVAC Know It All Business Edition Podcast, co-hosts Gary McCreadie and Furman Haynes from WorkHero speak with Vern Crawford, founder of Flow Logic Automation, about practical uses of AI and automation in HVAC and plumbing businesses. They examine an after-hours AI phone agent for plumbing emergencies, the difference between deterministic automations and AI agents, and how APIs, webhooks, and MCPs connect business systems. The conversation also covers starting with simple workflows, using field service management data effectively, and preparing clean data before implementing AI.

    Vern has experience working with Housecall Pro automations and building AI-enabled workflows. He discusses creating an MCP connection for Housecall Pro, using Make.com to process plumbing work orders, and helping businesses implement these systems.

    Expect To Learn:
    • How an after-hours AI phone agent can handle emergency calls and referrals.

    • Why voice, tone, and local context matter when designing AI phone agents.

    • The difference between deterministic automations and AI agents.

    • How a completed-job trigger can improve office visibility in Housecall Pro.

    • Why technician habits and workflow design affect automation success.

    • How AI agents can help interpret technician notes and complete administrative tasks.

    • What APIs, webhooks, and Model Context Protocols do in an AI workflow.

    Timestamps:

    00:00 – Introduction to Vern Crawford and Flow Logic Automation

    01:05 – A practical AI phone agent workflow

    03:57 – AI voice options, tone, and customer reactions

    04:52 – Testing accents and using human reception during business hours

    06:41 – Automation versus AI agents

    10:14 – A starting automation for completed jobs

    11:55 – Technician use of the finish button

    15:19 – Managing variation in HVAC service jobs

    18:03 – APIs, webhooks, and MCPs explained

    19:36 – Model Context Protocols and AI system connections

    21:28 – Webhooks as machine-to-machine messages

    Follow our Guest Vern Crawford & His Company:

    • Instagram: https://www.instagram.com/vern_crawford/

    • Company Website: https://www.flowlogicautomation.com/

    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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    22 mins
  • Hidden Video Game Addiction Nearly Cost Matt Showers His Family After Years of Secrecy - Part 2
    5 Oct 2026

    In this episode of HVAC Know It All, host Gary McCreadie speaks with Matt Showers, a commercial-industrial HVAC professional and the host of Trade Therapy Podcast, about the effects of compulsive screen time, gaming, and other obsessive behaviors on family life. They discuss recognizing a problem, confronting the consequences of addiction, setting boundaries, and taking the first step toward getting help.

    Matt shares how gaming became an ongoing problem during his marriage and why an ultimatum from his wife became his turning point. Drawing on his experience of rebuilding trust and changing his habits, he explains how honesty, visible boundaries, and a long-term focus on the kind of parent and partner he wants to be have shaped his approach.

    Key Takeaways
    • How recognizing the impact of compulsive behavior on family life can become the first step toward change.

    • Why knowledge and sound measurement practices matter more than owning expensive tools.

    • The importance of creating boundaries that reduce easy access to habits that can become compulsive.

    • How honesty about setbacks can help rebuild trust and keep recovery efforts accountable.

    • Why obsessive behavior can become harmful when it displaces sleep, food, work, or family responsibilities.

    • How reaching out to a trusted person can start the process of finding appropriate support.

    Key Timestamps

    00:00 – Cintas Ad

    02:45 – Community, social media, and calling out poor HVAC practices

    05:21 – Matt's breaking point with compulsive gaming and screen time

    08:23 – How addiction can take many forms, including work and learning

    11:16 – The effects of obsessive behavior on basic needs and family responsibilities

    17:05 – Why bottling up emotions can lead to a breaking point

    20:04 – Matt's advice to reach out to a trusted person for help

    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 and His Podcast on:

    Instagram: https://www.instagram.com/hvac_grammarian/

    Guest Linktree: https://linktr.ee/Hvac.grammarian

    Podcast Spotify: https://creators.spotify.com/pod/profile/trade-therapy/

    Follow the Host on:

    LinkedIn Profile: https://www.linkedin.com/in/gary-mccreadie-38217a77/

    LinkedIn - HVAC Know It All: https://www.linkedin.com/company/hvac-know-it-all-inc

    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 Podcasts: https://podcasts.apple.com/us/podcast/hvac-know-it-all-podcast/id1359253455

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    21 mins
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