How Analogue Gauges Lead to Compressor Failures and Bad Training in HVAC with John Anderson Part 1

In this episode of the HVAC Know It All Podcast, host Gary McCreadie is joined by John Anderson, Senior Regional HVAC Technical Trainer at Sila Services, Formerly Service Manager and Technician at Burns & McBride Home Comfort. John shares his insights on using analog and digital manifold gauges, discussing their pros, cons, and practical use in the field. The conversation covers the shift from analog to digital tools, the value of maintaining equipment instead of replacing it, and the importance of proper airflow diagnosis before adding refrigerant. Gary and John also talk about technician habits, training methods, and how using long hoses can lead to refrigerant loss over time.

In this conversation, John talks about the use of analog and digital manifold gauges in HVAC work. He explains how analog tools helped early in his career and why digital tools now offer faster and more accurate results. John and Gary discuss why learning airflow checks should come before using gauges and how poor airflow can lead to system freeze-ups. They share real job stories showing how small issues like dirty filters or low fan speed can cause big problems. The talk also covers how long hoses can slowly remove refrigerant and why technicians should focus more on maintenance than replacements.

Expect to Learn:

• Why learning airflow diagnosis is more important than checking refrigerant first on service calls.

• How analog and digital gauges compare in accuracy, speed, and ease of use.

• What risks come from using long manifold hoses during regular maintenance?

• How regular gasket and hose repairs can extend the life of your manifold gauges.

• When digital tools can speed up technician training and reduce callback issues.

Episode Highlights:

[00:00] - Intro to John Anderson in Part 1

[01:40] - Problems & Maintenance of Old Analogue Gauges

[05:45] - Should New Techs Learn on Analogue First?

[07:52] - The Weak "Battery Argument" for Analogue

[10:07] - Story: Unnecessary Gauging During Maintenance

[13:32] - Airflow Issues vs. Refrigerant Charge

[14:51] - Case Study: Frozen Coil & Compressor Failure

[18:58] - How Long Hoses Create "Phantom" Leaks

This Episode is Kindly Sponsored by:

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

Cool Air Products: https://www.coolairproducts.net/

SupplyHouse: https://www.supplyhouse.com/tm
Use promo code HKIA5 to get 5% off your first order at Supplyhouse!

Follow the Guest John Anderson on:

LinkedIn: https://www.linkedin.com/in/john-anderson-188093251/

Sila Services: https://www.linkedin.com/company/silaservices/

Burns & McBride Home Comfort: https://www.linkedin.com/company/burns-&-mcbride-home-comfort/

Website:

Sila Services: www.silaservices.com

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/