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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.

business careers

All Episodes

43:18

Transforming Grocery and Cold Storage with Data

HVAC School - For Techs, By Techs ·

2021/12/02

Amrit Robbins of Axiom comes on the podcast to discuss how we can use data science to transform grocery and cold storage. Axiom Cloud uses cloud analytics and AI to map data and analyze trends on refrigeration racks. It can be particularly useful to keep track of readings all the time because it’s impractical to rely on a human to take and record readings 24/7. Grocery stores are unique because they have so much product at stake and are relatively inflexible in their usage of energy. If something

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14:37

Superheat Talk - Short 133

HVAC School - For Techs, By Techs ·

2021/11/23

In this short podcast, Bryan goes over the basics of superheat and explains why it matters to us. Superheat is the temperature increase above a substance’s saturation temperature or boiling point. When a substance is superheated, that means it is 100% vapor; there is no liquid at all. We can look at our superheat to determine how much refrigerant is feeding our evaporator coil. A lower superheat indicates that our evaporator is more full of refrigerant than a high superheat, meaning that the

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30:10

Liquid Quality vs. Subcooling

HVAC School - For Techs, By Techs ·

2021/11/18

In this podcast episode, Bryan and Eric Mele talk about sight glasses, the significance of subcooling in refrigeration, and liquid quality. While we measure subcooling quite often in HVAC work, we rely on sight glasses and liquid line receivers far more often in refrigeration. You need a sight glass to determine the liquid quality in a refrigeration system. Subcooling is one way to assure liquid quality without a sight glass or a receiver. Subcooling refers to the temperature drop below liquid

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12:59

Aluminum Repair Tips - Short 132

HVAC School - For Techs, By Techs ·

2021/11/16

In this short podcast, Bryan explains the basics of repairing aluminum, such as on coils or tubing. Repairing aluminum can save lots of time on mission-critical calls and can help stop refrigerant leaks that lead to ozone layer depletion or global warming. Soldering makes almost all of the aluminum repair work we will do. (Brazing is possible, as aluminum has a melting point of 1200 degrees, but that’s still a bit too close to the brazing threshold.) When working with aluminum, we need to recognize

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12:20

Specifically About Heat - Short 131

HVAC School - For Techs, By Techs ·

2021/11/09

In this short podcast, Bryan goes over energy transfer and heat, specifically specific heat. BTUs per ton is a common measurement; a BTU (British thermal unit) is the amount of heat it takes to raise the temperature of one pound of water by one degree Fahrenheit. 12,000 BTUs per hour is equal to one ton in heating or cooling technology. It takes one “ton” of heat to melt a ton of ice, but we kept the measurement and terminology as we moved away from using ice in industrial refrigeration. When it

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35:59

Pressure Measurement Pro Tips w/ Steve Rogers

HVAC School - For Techs, By Techs ·

2021/11/04

In this podcast, Steve Rogers from The Energy Conservatory explains some pro tips for pressure measurement. There are three common types of pressure measurements: absolute, gauge, and differential. Absolute pressure is the pressure in a particular space in reference to a complete vacuum. (All absolute measurements use the zero point as a reference.) Gauge pressure uses atmospheric pressure as a reference point (which varies with altitude and location). Differential pressure relies on two connections

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56:51

Copeland Reciprocating CS Compressors w/ Trevor

HVAC School - For Techs, By Techs ·

2021/10/28

Trevor Matthews from Refrigeration Mentor comes on the podcast to talk about Copeland reciprocating CS compressors. He and Bryan cover Bulletin AE4-1433 (found HERE) as they look at the operating envelopes for the CS compressor. The CS compressors are hermetic reciprocating compressors that can work with some of the newer refrigerants. You will likely see these compressors in applications with smaller tonnages. You’ll usually want to charge these compressors with liquid refrigerant. If you have more

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11:31

Adiabatic Cooling - Short 130

HVAC School - For Techs, By Techs ·

2021/10/26

In this short podcast episode, Bryan explains the science behind adiabatic cooling. Adiabatic cooling occurs in specific HVAC/R applications and in our environment as air temperatures and pressures change. When we think of cooling, we refer to the loss of heat; we are either referring to the change in the total BTU content of the air mass or the temperature change. Adiabatic cooling takes sensible heat and transforms it into latent heat. The most simple forms of adiabatic cooling can be seen in

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14:04

Fighting Boredom at Work - Short 129

HVAC School - For Techs, By Techs ·

2021/10/19

In this short podcast episode, Bryan shares his top tips for fighting boredom at work. You can use these tips to help you get out of a rut if you don’t feel productive or get bored easily. The first tip for fighting boredom is to see the art or creativity in your work. Even in the HVAC industry, there are plenty of opportunities for artisan skills and craftsmanship. When you see your work as an art that you need to refine, it’s easier to get engaged in your work and feel proud of it. That's

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25:10

Review Of Vacuum For Service Revisted

HVAC School - For Techs, By Techs ·

2021/10/14

In this podcast episode, Bryan goes through the addendum to the book Review of Vacuum for Service Engineers. He and Jim Bergmann had the honor of revising the latest edition in 2020. You can get the latest edition of Review of Vacuum for Service Engineers from TruTech Tools HERE. Pulling a Schrader core before evacuation makes a big difference in the speed of the evacuation. You can use a core remover tool to pull the cores when the system is NOT pressurized. There are three common types of ports to

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12:56

Electric Heat - Short 128

HVAC School - For Techs, By Techs ·

2021/10/12

In today’s short podcast, Bryan discusses electric heat, how we use it in our work, and what it does. Also called heat strips or heat elements, electric heat is a supplemental heat source that we usually see on heat pumps. We generally see them in fan coils within a cartridge or a kit at the top of an air handler. However, not all systems have backup heat. We want to avoid running electric heat as much as possible because it is inefficient. There is almost nothing we can do to make heat strips more

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24:38

Introducing Refrigeration Mentor w/ Trevor

HVAC School - For Techs, By Techs ·

2021/10/07

Trevor Matthews comes on the podcast to discuss his newest project, Refrigeration Mentor. Refrigeration Mentor uses Trevor’s experience as a trainer and field technician to guide others in their careers. Trevor’s goal is to help commercial refrigeration technicians grow and become more confident in their skills. He wants them to become the best technician they can be, and he believes that mentorship is one of the things that make our industry great. Mentorship can help people advance their careers,

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48:15

Effective IAQ Measurement & Control w/ Haven

HVAC School - For Techs, By Techs ·

2021/10/05

In this podcast, Ben from HAVEN IAQ, Kaleb, and Bryan discuss how to control indoor air quality and take effective, meaningful, accurate measurements. HAVEN is a platform that offers hardware and software delivered to a homeowner through an HVAC professional. HAVEN’s goal is to give its customers a healthier, more comfortable home using IAQ solutions. The hardware (controls, etc.) works with the HAVEN software to give customers and contractors data about IAQ and the performance of the HVAC

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39:07

College vs. Skilled Trades w/ Ryan Gorman

HVAC School - For Techs, By Techs ·

2021/09/30

Ryan Gorman comes on the podcast to discuss the differences between a college education and early career opportunities in the skilled trades. Many parents feel pressured to send their children to college and encourage them to get a four-year degree. Despite what society may lead us to believe, there is no shame in thinking that college may not be suitable for you or your child; the skilled trades have many opportunities for people to learn throughout their lives and make a good living. In many

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39:25

A2L Refrigerant Facts w/ Jason Obrzut

HVAC School - For Techs, By Techs ·

2021/09/23

Jason Obrzut comes on the podcast to discuss A2L refrigerant facts. Jason is a member of AHRI’s Safe Refrigerant Transition Task Force and author of the RACT manual. ASHRAE designates refrigerants into categories based on toxicity (A or B) and flammability (traditionally 1, 2, and 3). So, the new A2L designation indicates that a refrigerant is relatively non-toxic but has a flammability value between 1 (low) and 2 (moderate). While propane (R-290) is a good refrigerant because it is natural and has

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01:40:56

Dealing with Difficult People at Work

HVAC School - For Techs, By Techs ·

2021/09/16

In today’s podcast, Bryan and some Kalos employees discuss how to deal with difficult bosses and coworkers in HVAC/R work. Whether your coworkers have anger issues, are careless, or are miserable people, you don’t want that negativity to affect your job satisfaction. Addressing the behavior may likely help, but you don’t want to attack the other person. The key to dealing with difficult coworkers is to communicate boundaries respectfully with the goal of improving the work environment. Boundaries

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53:58

The ACCA Manuals w/ Ed Janowiak

HVAC School - For Techs, By Techs ·

2021/09/09

In today’s podcast, Ed Janowiak comes onto the podcast to talk about the Air Conditioning Contractors of America manuals. Ed started off in the field and has recently become the new Manager of Design Education at ACCA. You can follow him on Snapchat (skinnyed). ACCA (Air Conditioning Contractors of America) is responsible for publishing and setting the standards in all of the books we use for residential and light commercial HVAC work. (Residential work typically encompasses Manuals J, S, D, and T)

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01:49:19

Money Conversations for Techs

HVAC School - For Techs, By Techs ·

2021/09/02

In today’s podcast, Bryan and Jesse talk about how technicians can have conversations about finances and money in the HVAC business. The first step for any successful business is to provide customers/clients with a product or service of value. However, there must be a balance between providing something of value to customers and providing excellent customer service. When starting an HVAC business, one of the biggest mistakes is making money the top priority. Money can only become a factor after a

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05:59

Sleeve vs. Ball Bearings - Short 127

HVAC School - For Techs, By Techs ·

2021/08/31

In today’s short podcast, Bryan explains the differences between sleeve and ball bearings. Techs often make some avoidable mistakes because they either don’t know the difference between the two or don’t notice the bearing type on their equipment. On a basic sensory level, ball bearings tend to be louder than sleeve bearings. So, if you replace a sleeve bearing motor with a ball bearing motor, then excess noise may not indicate any problems after all. Lubrication is usually more consistent with ball

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41:55

Horizontal Scroll Compressors w/ Trevor

HVAC School - For Techs, By Techs ·

2021/08/26

In today’s podcast, Trevor Matthews from Emerson talks about horizontal scroll compressors. Throughout the podcast, we refer to Bulletin AE4-1338 (R3). You can find that bulletin HERE. Horizontal scroll compressors are common in mobile applications, like buses and trains. They’re shorter in height than other compressors, so they fit into tighter spaces and are ideal for transport refrigeration. Scroll compressors are particularly susceptible to overheating, and you need some controls to protect

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880 results

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