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

Release Date: 06/30/2025

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...

How Technical Pros Succeed in HVAC Sales without Being Sleazy by Earning Loyalty - Tony & Ben Part 1

HVAC Know It All Podcast

In this episode of the HVAC Know It All Podcast, guest host talks with is VP of Technical Media at and a host on HVAC TV. Recorded live at AHR Expo 2025, they dive into the real-world challenges of selling large HVAC systems. Tony shares how he moved from engineering into sales and why building trust is key in commercial projects. They discuss the value of honest sales, the importance of strong relationships, and how good reps act like consultants. Tony also explains how every sale is about solving problems, not just selling products. Tony Mormino talks with Ben Reed about selling HVAC...

More Episodes

In this episode of the HVAC Know It All Podcast, host Gary McCreadie chats with Matthew Cowley, a North America Sales Manager: Spectroline Leak Detection (Industrial & HVAC/R) at Spectronics Corporation, 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 modern sealant method.

Matthew Cowley explains how modern oil-based sealants are safer for HVAC systems than old polymer ones. He shares how these sealants coat tiny leaks from inside without hardening or clogging parts. Matthew talks about how they need pressure, heat, and small leak spots to work well. He also explains why these sealants don’t hide damage but help prevent bigger leaks. Gary adds real job stories showing how these sealants fixed small leaks without harming systems. They both agree that with testing and care, this method can save time, money, and prevent future service calls.

Here, Matthew explains how oil-based sealants work safely by coating leaks from the inside without reacting to air. Like using oil between gears, it seals without blocking flow. He talks about how these sealants need heat, pressure, and tiny leak spots to work well. Matthew warns that they won't fix big leaks, but are great for small, hard-to-find ones. Gary adds that testing over time shows no damage to systems. They remind techs that using sealant with care can help avoid repeat leaks and keep systems running quietly and smoothly.

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