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HVAC Sealant Myths for Techs to Stop Using Outdated Beliefs & Fix Micro Leaks – Matthew Cowley Part 2

Release Date: 07/03/2025

HVAC Sealant Myths for Techs to Stop Using Outdated Beliefs & Fix Micro Leaks – Matthew Cowley Part 2

HVAC Know It All Podcast

In this episode of the HVAC Know It All Podcast, host continues his chat with , a North America Sales Manager: Spectroline Leak Detection (Industrial & HVAC/R) at . They discuss the leak sealants, their proper use, and common misconceptions. Matthew explains how Spectronics' oil-based, solvent-free sealant is safe and effective for tiny evaporator leaks. Gary shares tips from his article on diagnosing and fixing leaks, stressing that sealants should only be used when repairs aren't possible. They also talk about the EZ-Ject injection method, which makes applying sealant clean and simple....

The Truth About HVAC Sealants for Techs to Stop Leaks and Save Compressors – Matthew Cowley Part 1

HVAC Know It All Podcast

In this episode of the HVAC Know It All Podcast, host chats with , a North America Sales Manager: Spectroline Leak Detection (Industrial & HVAC/R) at , about the truth behind internal sealants used in HVAC systems. They explain how older polymer-based sealants caused problems due to chemical reactions, while new oil-based ones work safely with mechanical action. Matthew and Gary talk about how oil-based sealants coat leak areas from the inside without clogging or damaging parts. They also share stories from real HVAC jobs, testing tips, and why more people are starting to trust this...

HVAC Evacuation Myths for Installers to Fix System Failures with Torque Tools – David Rames Part 2

HVAC Know It All Podcast

In this episode of the HVAC Know It All Podcast, host continues his conversation with , Senior Product Manager at . In Part 2, David talks about the importance of pressure testing and evacuating each line set in multi-zone ductless systems. He emphasizes using a torque wrench to avoid over-tightening flare nuts, which can cause leaks. David also explains the dry mode feature in Midea systems, designed to control humidity effectively. The episode wraps up with advice on proper installation, maintenance, and the value of training to ensure quality work and satisfied customers. David Rames...

Ductless Heat Pump Tips for HVAC Pros to Master Zoning and Install Smarter with David Rames Part 1

HVAC Know It All Podcast

In this episode of the HVAC Know It All Podcast, host talks with , Senior Product Manager at , about how Multi-zone Ductless systems work and where they fit best. David explains why they’re great for homes without ductwork and how each room can have its own comfort setting. They break down how the system runs, including how it uses one outdoor unit for many indoor units. Gary and David also cover installation tips, design tricks, and how to avoid wiring mistakes. Plus, they share real-world advice on mounting units to reduce noise and making sure systems run smoothly and last longer. David...

Sealant vs Replacement in HVAC for Technicians to Use a Proven Leak Fix 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, Tyler shares his thoughts on using UV dye and leak sealants in refrigerant systems. They talk about how some products, like Spectroline dye, are safe and approved by top manufacturers. Tyler also discusses the pros and cons of leak sealants, stressing they should only be used as a last resort. The episode ends with a look at Sauermann’s Si-DR3 leak detector and how it's built to be both affordable and effective for today’s techs working with modern refrigerants. Tyler Nelson talks about using...

How HVAC Pros Can Avoid Misdiagnosis with UV Dye and Leak Detectors in 2025 with Tyler Nelson Part 1

HVAC Know It All Podcast

In this episode of the HVAC Know It All Podcast, host with from talk about the best ways to find refrigerant leaks. Tyler explains why old methods like using soap bubbles aren’t enough anymore, and how electronic and ultrasonic leak detectors can save time and avoid costly mistakes. They also talk about the right way to use nitrogen for leak checks and how small things like Schrader caps can make a big difference. Tyler shares why UV dye still works well when used right, and how knowing your tools helps you do better work and keep customers happy. Tyler Nelson explains why using modern...

HVAC Tools for Techs to Replace Manifolds and Build Client Trust using EER with Tyler Nelson Part 2

HVAC Know It All Podcast

In this episode of the HVAC Know It All Podcast, host continues his conversation with from , an expert in refrigeration and HVAC tools. In Part 02, Tyler talks about the benefits of using wireless probes and digital manifolds over traditional methods, explaining how they help improve efficiency and reduce refrigerant loss. He shares his thoughts on the future of HVAC technology and the importance of understanding the refrigeration cycle. Tyler also touches on the significance of proper training in leak detection and offers advice for technicians looking to improve their skills. Tyler...

How HVAC Technicians Use Digital Tools to Prove Repairs & Prevent Liability with Tyler Nelson Part 1

HVAC Know It All Podcast

In this episode of the HVAC Know It All Podcast, host talks with from about how digital tools are changing the HVAC industry. Tyler explains why using smart tools like digital gauges and apps is not just about speed, it’s about proving your work, building trust, and keeping customers informed. He shares how adding screenshots from tools like ChatGPT helps explain repairs better and prevent confusion. Tyler also talks about Sauermann’s new handheld manifold, made to be small, powerful, and built on real tech feedback from the field. Tyler Nelson talks about why switching from analog...

How Improper Handling and Low Airflow Kill HVAC Compressors Without Warning with Glen Schwarzman

HVAC Know It All Podcast

In this episode of the HVAC Know It All Podcast, host talks with Glen Schwarzman from about compressors and refrigerants. They discuss why using the wrong refrigerant can cause problems and void warranties. Glen explains different types of compressors, how variable speed tech works, and the importance of protecting compressors with things like phase monitors. They also cover tips for oil return in modulating compressors and why understanding new tech is key for HVAC techs. The episode is full of helpful info for anyone working with modern HVAC systems. Glen Schwarzman explains how using...

How HVAC Techs Use ChatGPT and Claude to Shift into Sales Without Slick Talk – Tony & Ben Part 2

HVAC Know It All Podcast

In this episode of the HVAC Know It All Podcast, host continues his chat with , is VP of Technical Media at and a host on HVAC TV. In Part 02, Tony shares key lessons from his career, like the value of showing up when things go wrong, how hands-on experience can boost trust, and why honesty builds strong client ties. He also talks about ways technicians can shift into sales roles and what to expect day-to-day. Tony opens up about using AI tools like ChatGPT for content and gives advice for anyone thinking about changing careers or growing in the HVAC field. Tony Mormino shares how showing up...

More Episodes

In this episode of the HVAC Know It All Podcast, host Gary McCreadie continues his chat with Matthew Cowley, a North America Sales Manager: Spectroline Leak Detection (Industrial & HVAC/R) at Spectronics Corporation. They discuss the leak sealants, their proper use, and common misconceptions. Matthew explains how Spectronics' oil-based, solvent-free sealant is safe and effective for tiny evaporator leaks. Gary shares tips from his article on diagnosing and fixing leaks, stressing that sealants should only be used when repairs aren't possible. They also talk about the EZ-Ject injection method, which makes applying sealant clean and simple. The episode ends with a push for better research and open-mindedness in the HVAC trade.

Matthew Cowley explains how Spectronics Corporation's sealants work to fix very small refrigerant leaks, especially in hard-to-reach places like evaporator coils. He talks about the importance of finding and confirming a leak before using a sealant. Matthew also shares how their dye and sealant mix is safe, oil-based, and doesn’t harm HVAC systems. Gary adds tips from his own testing and stresses that sealants should be used only when proper repairs aren’t possible. They finish by urging techs to learn, test products, and stay open-minded about modern leak solutions.

Throughout this episode, Matthew talks about the safe use of leak sealants in HVAC systems. He explains that their oil-based formula works well for small leaks and doesn’t harm system parts. He and Gary stress the need to confirm a leak before using sealant and only apply it when a repair isn’t possible. Matthew also explains their clean and EZ-Ject injection tool. Lastly, they talk about learning, testing products, and staying open-minded to new tools and methods in the HVAC field.

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