Libsyn Directory

HVAC Design Mistakes for HVAC Pros to Stop Oversizing and Switch to Heat Pumps with Drew Tozer Part 1

Release Date: 07/09/2025

HVAC Service Tips to Find Hidden Failures, Prevent CO Risks & Win Clients with Tyler Nelson Part 2

HVAC Know It All Podcast

In this episode of the HVAC Know It All Podcast, host wraps up his chat with from . In Part 02 of their discussion on refrigerant leaks, sealants, and best practices in HVAC diagnostics. Diving deeper into controversial yet evolving topics, Gary and Tyler examine both the theory and field-tested realities of leak detection and system maintenance, shedding light on how technicians can balance practicality, ethics, and innovation in their everyday work. Tyler and Gary talk about how leak sealants in HVAC systems are seen differently now, with some techs testing them and finding they work well...

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In this episode of the HVAC Know It All Podcast, host talks with from about the importance of early maintenance for heating systems. Tyler explains how doing checks before the cold weather hits can help prevent issues like cracked heat exchangers, saving time and stress later. They discuss how tackling maintenance during the shoulder season lets you handle repairs in better conditions, avoiding rushed work in the winter. Tyler also emphasizes the need for combustion analysis and safety checks to protect both technicians and customers from carbon monoxide risks. Tyler talks about the...

How HVAC Techs Can Use Deep Vacuum, Nitrogen & AI Tools to Reduce Callbacks with Jim Bergmann Part 2

HVAC Know It All Podcast

In part 2 of this episode of the HVAC Know It All Podcast, host continues his conversation with , President of and Director of New Product Development at . In Part 2, they discuss topics like the evolution of vacuuming techniques, moving away from triple evacuation, and why modern two-stage pumps are more efficient. Jim explains how to detect leaks using the decay vacuum method, the importance of nitrogen purging, and how refrigerant and oil behavior affects evacuation times. They also discuss the role of Measure Quick in helping technicians diagnose system issues and communicate better with...

How Hose Size Beats Pump Size for HVAC Pros to Get Faster & Deeper Evacuation - Jim Bergmann Part 1

HVAC Know It All Podcast

In this episode of the HVAC Know It All Podcast, host welcomes , President of and Director of New Product Development at . They talk about the science behind evacuation, the impact of hose size on evacuation speed, and the common misconceptions around pulling a vacuum. Jim explains how using larger hoses and understanding conductant speed can improve evacuation time and performance. They also discuss the effects of temperature on evacuation, particularly in cold climates, and how to prevent moisture buildup in systems. This conversation provides clear insights for HVAC professionals to...

HVAC Evacuation Myths, Real-World Hacks, and Customer Lessons Technicians Must Learn

HVAC Know It All Podcast

In this solo episode of the HVAC Know It All Podcast, host , Director of Player Development and Head Coach at Shelburne Soccer Club and President of and , shares real-world lessons from the field, focusing on pulling vacuums and handling customer repairs. He explains why larger hoses improve vacuum speed, clears up common HVAC myths, and stresses the value of testing and thinking critically. Gary also talks about fixing equipment with limited budgets, using a coil-combing tool, and keeping customers running while maintaining safety and trust. It's a helpful, honest episode full of tips for...

HVAC-as-a-Service Approach for Cannabis Retrofits to Solve Capital Barriers - John Zimmerman Part 2

HVAC Know It All Podcast

In this episode of the HVAC Know It All Podcast, host continues his conversation with , Founder & CEO of , about HVAC solutions for the cannabis industry. John explains how his company approaches retrofit applications by offering full solutions, including ductwork, electrical services, and equipment installation. He emphasizes the importance of designing scalable, efficient systems without burdening growers with unnecessary upfront costs, providing them with long-term solutions for their HVAC needs. The discussion also focuses on the best types of equipment for grow operations. John...

How HVAC Design & Redundancy Protect Cannabis Grow Rooms & Boost Yields with John Zimmerman Part 1

HVAC Know It All Podcast

In this episode of the HVAC Know It All Podcast, host chats with , Founder & CEO of , to kick off a two-part conversation about the unique challenges of HVAC systems in the cannabis industry. John, who has a strong background in data center cooling, brings valuable expertise to the table, now applied to creating optimal environments for indoor grow operations. At Harvest Integrated, John and his team provide “climate as a service,” helping cannabis growers with reliable and efficient HVAC systems, tailored to their specific needs. The discussion in part one focuses on the complexities...

HVAC Rental Trap for Homeowners to Avoid Long-Term Losses and Bad Installs with Scott Pierson Part 2

HVAC Know It All Podcast

In part 2 of this episode of the HVAC Know It All Podcast, host , Director of Player Development and Head Coach at , and President of , switches roles again to be interviewed by , Vice President of HVAC & Market Strategy at . They talk about how much today’s customers really know about HVAC, why correct load calculations matter, and the risks of oversizing or undersizing systems. Gary shares tips for new business owners on choosing the right CRM tools, and they discuss helpful tech like remote support apps for younger technicians. The conversation also looks at how private equity...

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HVAC Know It All Podcast

In this special episode of the HVAC Know It All Podcast, the usual host, , Director of Player Development and Head Coach at , and President of . takes the guest seat as he’s interviewed by , Vice President of HVAC & Market Strategy at , to discuss the current state of the HVAC industry. They discuss the industry's shifts, like the push for heat pumps, and the importance of balancing technical skills with sales training. Gary talks about the generational gap in the trade and the need for a cultural change to better support new technicians. They also explore how digital tools and online...

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HVAC Know It All Podcast

In Part 2 of this episode of the HVAC Know It All Podcast, host is joined by , a Culture Consultant, Culture Pyramid Implementation, Public Speaker at . Benjamin shares how real conversations and better training can reduce stress and boost team performance. He introduces a pyramid model for honest communication, direction, fulfillment, and accountability. Benjamin also explains how small changes in workplace culture can lead to big improvements in mental health and job satisfaction for workers. His tips help create safer, more supportive, and efficient work environments. Benjamin Dryer talks...

More Episodes

In this episode of the HVAC Know It All Podcast, host Gary McCreadie talks with Drew Tozer, an energy advisor and Partner at Foundry Heat Pumps, and Expert Advisor at Building Decarbonization Alliance and Jouleia, about heat pump systems and how to make homes more comfortable. They discuss common problems like hot and cold rooms, the myths around heat pumps, and why right-sizing equipment matters. Drew explains how heat pumps have improved and how to pick the best one based on home size, ductwork, and local climate. They also cover hybrid setups, electric backups, and simple tips to avoid overworking systems and keep indoor air comfy and efficient.

Drew Tozer explains how many homes have rooms that are too hot or too cold because of wrong HVAC sizing. He shares why heat pumps are a smart fix when sized right and how older myths make people avoid them. Drew says most homes don’t need gas backup and that hybrid systems help when ductwork or power panels are limited. Gary shares job stories showing how right sizing and good planning improve comfort. They both agree that knowing a home’s needs and choosing the right system can lower costs, save energy, and keep homes more comfortable year-round.

Here, Drew explains how many HVAC systems are too big for the home, which causes hot and cold spots and short run times. Like using the right shoe size, right-sizing heat pumps helps keep comfort steady. He says heat pumps now work well even in cold places, and hybrid setups help when ductwork or power is limited. Gary shares how proper installs and load checks made big comfort changes. They remind techs that smaller, well-planned systems run better, save energy, and avoid problems like noise, bad airflow, and early breakdowns.

Expect to Learn:

Why do many homes have hot and cold rooms year-round?
How oversized HVAC systems cause poor comfort and airflow.
Why modern heat pumps often don’t need a gas backup.
How hybrid systems help when ducts or power are limited.
Why right-sizing saves energy and makes homes feel better.

Episode Highlights:

[00:00] - Intro to Drew Tozer in Part 01

[02:07] - Modern Heat Pumps Don’t Need Gas Backup

[04:49] - Why load calculations are key for heat pumps

[05:45] - Hybrid setups for duct and power limitations

[09:25] - Oversized cooling and moisture issues explained

[11:37] - Real loads vs. guessed loads in HVAC installs

[13:32] - Choosing the best size heat pump for ductwork

[16:58] - Panel upgrades vs. staying with gas backup

[19:39] - Fixing hot/cold rooms with the right equipment sizing

🎁 Claim Your Free Copy of Feel Good Homes!
Visit https://foundryheatpumps.ca/ to get your free PDF or physical book (available in Ontario). Make your home feel better, starting today!

This Episode is Kindly Sponsored by:

Master: https://www.master.ca/

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

Supply House: https://www.supplyhouse.com/

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

Follow the Guest Drew Tozer on:

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

Foundry Heat Pumps: https://www.linkedin.com/company/foundry-heat-pumps/

Building Decarbonization Alliance: https://www.linkedin.com/company/building-decarbonization-alliance/

Jouleia: https://www.linkedin.com/company/jouleia/

Follow the Host:

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