HVAC Grapevine

February 19, 2024

Join Chris Hughes, Eric Keiser, and Mike Cianfrocco from the popular HVAC Grapevine podcast as they come to you LIVE from the 5th Annual HVAC/R Training Symposium! These expert technicians discuss the latest conference insights, highlight memorable moments from the event, and share their big takeaways. Get an inside look at this major industry gathering through their lively conversation.

Listen in as they reminisce about presenting together in person for the first time, amusing anecdotes from sessions and demos, brushes with HVAC celebrities like Richard Trethewey from This Old House, and more. They’ll also preview upcoming Grapevine guests and plans to expand their content in 2024. Don’t miss this exclusive behind-the-scenes peek at the Symposium from some of the top names in the field!

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Check out our most recent video

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Our latest Podcast

HVAC School – For Techs, By Techs

Real training for HVAC ( Heating, Ventilation, Air Conditioning and Refrigeration) Technicians. Including recorded tech training, interviews, diagnostics and general conversations about the trade.

In this enlightening episode, we sit down with Mike, a 20-year veteran from DITEK, a leading American manufacturer of surge protection devices based in Largo, Florida. The conversation begins with a brief discussion about recent hurricane impacts in the Tampa Bay area, where DITEK maintains its 65,000-square-foot manufacturing facility. Mike shares how the company, despite facing challenging weather conditions, continued its operations and maintained its commitment to American manufacturing.

The bulk of the discussion centers around surge protection technology and its critical importance in protecting HVAC systems and other electronic equipment. Mike provides an excellent analogy, comparing surge protectors to pressure relief valves for electrical systems. He explains how Metal Oxide Varistors (MOVs) work as semiconductors that create low impedance paths to ground when voltage exceeds certain thresholds. The conversation delves into the evolution of MOV technology, particularly the development of thermally protected MOVs that provide enhanced safety features.

The episode also addresses common misconceptions about surge protection, particularly the belief that surge protectors are primarily for lightning protection. Mike explains that while lightning strikes are a concern, especially in areas like Florida, approximately 65% of surges actually originate from within facilities themselves, often from equipment cycling on and off or other power quality issues. He emphasizes the importance of proper installation, particularly regarding ground connections and lead lengths, noting that every six inches of wire length can add about 100 volts to the clamping voltage of the device.

Key Topics Covered:

DITEK’s history and commitment to American manufacturing
Basic principles of surge protection and how MOVs work
Evolution of MOV technology and thermal protection features
Difference between transient voltage and temporary overvoltage (TOV)
Importance of proper grounding and lead length in surge protection
Cascading surge protection strategy for comprehensive protection
UL testing standards and voltage protection ratings (VPR)
Common misconceptions about surge protection
Impact of aging electrical infrastructure on power quality
Importance of customer support and ethical business practices
Installation best practices for surge protection devices
Relationship between ground resistance and surge protector performance
Types of surge protective devices (SPD) and their classifications

Learn more about DITEK at https://www.diteksurgeprotection.com/.

Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool.

Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

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Most popular videos

Tips for Cleaning an Air Conditioning Common Drain

Gas Furnace Overview w/ AC Service Tech

Motor Overload and Safeties – Kalos Meeting

A Common Electrical Mistake

5 Traits of Bad HVAC Leaders

Don’t Overfill Refrigerant Recovery Cylinders The Easy Way

How to Replace an AC Condensing Fan Motor

How to Braze Air Conditioning Copper

How to Leak Test an AC With Nitrogen Pressure

How to Properly Pipe a Drain on a Fan Coil

4 Silly Mistakes of The Green HVAC Tech

How to Install an AC Disconnect

Why a Hard Shut Off TXV Closes

The Importance of SST (Evaporator Temperature) and Using a Scale (Kalos Meeting)

Adjusting Gas Pressure on a Standard and Gemini Furnace Valve

How a Heat Pump Reversing Valve Works

Don’t Confuse TD & Delta T

How to Install a Thermostat

How and When to Use a Schrader Core Removal Tool

Why Does The Evaporator Coil Freeze (And How to Diagnose It)

How to Measure Total External Static Pressure (TESP)

Does a TXV Shut under Vacuum?

Prevent this Common Manometer Mistake

Facts About Fusite (Compressor Electrical Pass Through Connections)

See Inside a Biflow/Heat Pump Filter Drier

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Top 10 HVAC Tech Tips for 100K

Installing a Rectangle to Round Transition into an Existing Metal Duct

How Humidity Impacts The Weight of Air

Testing Home Pressure Imbalance w/ Genry Garcia (Spanish)

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Bert Teaches The Basic Refrigerant Circuit + Safety

Heat Rise Airflow Calculation

LIVE Apprentice Q&A

Setting a Refrigerant Charge by Subcool

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