HVAC Failures Every Installer Must Avoid to Protect Compressors with John Davidson | Part 2

In part 2 of this episode of the HVAC Know It All Podcast, host Gary McCreadie continues his discussion with John Davidson, Regional Trainer at Fujitsu General America, Inc. They discuss inverter-driven heat pump systems, emphasizing the benefits of maintaining consistent temperatures and proper system sizing. John shares best practices for installation, including flaring techniques, pressure testing, and vacuum procedures. The conversation also covers the importance of voltage monitoring, surge protection, and using the right tools like torque wrenches and micron gauges. Together, they highlight how attention to detail helps improve system performance and reliability.

Gary and John talk about how inverter-driven heat pumps help keep homes comfortable and save energy. John explains why steady heating is better than deep setbacks and how proper sizing avoids overworking the system. They cover key installation tips like using nitrogen when brazing, getting flare connections right, and pressure testing to avoid leaks. John shares why torque wrenches and micron gauges matter and how small steps can prevent system damage. They finish by stressing the need for surge protection, voltage checks, and clear communication with homeowners about system use and comfort goals.

 

Expect to Learn:

• Why inverter heat pumps are better for steady comfort and energy savings.

• How to flare and torque refrigerant lines the right way to avoid leaks.

• The best practices for pressure testing and pulling a deep vacuum.

• Why surge protection and voltage monitoring help protect HVAC systems.

• How talking with homeowners about use and comfort leads to better installs.

 

Episode Highlights: 

[00:00] - Intro to John Davidson in Part 02

[01:33] - Inverter systems & temperature control

[03:21] - Maintaining temp vs. deep setbacks

[05:13] - Gary discusses flare seat lubrication

[07:17] - Flare lubrication debate

[10:30] - Pressure testing procedures

[13:52] - Vacuum & moisture concerns

[15:40] - Power quality & protection

[19:40] - System application & dehumidification discussion

[22:44] - Gary wraps up the conversation

 

This Episode is Kindly Sponsored by:

Master: https://www.master.ca/

Cintas: https://www.cintas.com/

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

property.com: https://mccreadie.property.com

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

Follow the Guest John Davidson on: 

LinkedIn: https://www.linkedin.com/in/johndavisonvrf/  

Fujitsu General America, Inc: https://www.linkedin.com/company/general-inc-us/  

Website: 

Fujitsu General America, Inc: https://www.fujitsugeneral.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/