The Dual Fuel Systems for HVAC Pros to Stop Coil Damage and Rusted Furnaces with Jim Fultz Part 2

In part 2 of this episode of the HVAC Know It All Podcast, host Gary McCreadie is joined again by Jim Fultz, National Technical Training Manager at Copeland and a former Emerson trainer, to explore dual fuel systems and the importance of proper equipment placement. They talk about the difference between thermal and economic balance points, and why running a heat pump and furnace at the same time can cause serious issues. Jim explains how incorrect coil placement can lead to rusted heat exchangers and how technology like the Sensi Touch 2 thermostat helps manage switchover points more accurately. This episode offers helpful tips for HVAC techs working with hybrid heating systems.

Gary and Jim talk about how dual fuel systems work and why the placement of coils and furnaces matters for system life and safety. Jim explains the problems that happen when coils are placed before furnaces, like rust inside heat exchangers from trapped moisture. They cover why heat pumps and gas furnaces should not run at the same time and how electric resistance heat is different. Jim also shares how the Sensi Touch 2 thermostat and its outdoor sensors help manage switchover points better. They end by talking about wireless tools that save time and avoid hard-wiring jobs.

Expect to Learn:

• What do thermal and economic balance points mean in HVAC?

• Why heat pumps and gas furnaces should not run at the same time.

• How coil placement can damage heat exchangers over time.

• Ways the Sensi Touch 2 helps manage backup heat more accurately.

• How wireless sensors can solve wiring problems in retrofit jobs.

Episode Highlights:

[00:00] - Intro to Jim Fultz in Part 02

[01:56] - Why Furnace & Heat Pump Can't Run Together

[06:28] - The Risks of Incorrect Coil Placement

[11:35] - Sensi Touch 2 Thermostat & Wireless Solutions

[14:50] - Cost Analysis & "Stealth" Thermostat Feature

[16:35] - Final Recap on Balance Points

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 Jim Fultz on:

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

Copeland: https://www.linkedin.com/company/copeland/

Emerson: https://www.linkedin.com/company/emerson/

Website:

Copeland: https://www.copeland.com/global

Emerson: https://www.emerson.com/global

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/