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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

34:56

Introduction to CoreSense

HVAC School - For Techs, By Techs ·

2020/09/10

Trevor Matthews from Emerson Canada joins us on the HVAC School podcast again to talk about CoreSense by Emerson. Each CoreSense module has the potential to protect compressors. The technology can detect issues like overheating, short cycling, locked rotor, missing phase, low oil, and more. In short, the goal is to notify the technician or mechanic that something happened; sometimes, the control can also shut the compressor off and lock it out. Overall, it wants to communicate with the technician;

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51:08

How to Get The Most From Online Education

HVAC School - For Techs, By Techs ·

2020/09/03

Alex Meaney from MiTek/Wrightsoft joins us again because he’s an awesome trainer and knows a thing or two about how to more out of online education for the trades. During the COVID-19 pandemic, we've seen a dramatic shift from in-person to online education. The transition has been hard on students and educators alike, but there are still ways to make it work. Preparation is the key. Before you enter a class, make sure you look at the agenda and required or suggested reading. It's also a good idea

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56:38

Preventing and Troubleshooting Compressor Issues

HVAC School - For Techs, By Techs ·

2020/08/27

Our good friend Trevor Matthews from Emerson Canada joins us to talk about compressors, mostly preventing compressor failure and troubleshooting issues. Whenever we're installing or servicing a compressor, we need to think about possible systemic issues right off the bat. The compressor is the heart of the system, but everything else in the system affects how the compressor runs. You'll want to know which type of compressor you're working with as well as the manufacturer. As always, you'll want to

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09:43

Suction Line Temperature - Short #100

HVAC School - For Techs, By Techs ·

2020/08/25

In this short podcast episode, Bryan discusses the importance of suction line temperature and what it can tell you about an HVAC system. There are two main places to take your suction temperature: at the evaporator outlet and right where the suction line goes into the condensing unit. When the former number is high, you could have a starved/underfed evaporator. When the latter number is high, you may have poor suction line insulation. If the refrigerant is too hot when it goes into the compressor,

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59:41

Duct Installation Best Practices

HVAC School - For Techs, By Techs ·

2020/08/20

In this podcast episode, Neil Comparetto from Comparetto Comfort Solutions joins Bryan and Kaleb to discuss some duct installation best practices he has learned. You might be able to take away some of his duct installation tips and apply them in the field. Neil used to focus a lot on making the ducts look good, but nowadays, he focuses a lot more on performance; the work of art is in the data, not the beauty of the building materials. The quality of the seal on the duct is more important than the

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13:11

Compressor Overheating - Short #99

HVAC School - For Techs, By Techs ·

2020/08/18

In this short podcast episode, Bryan explains what happens to a compressor when it's overheating. He also covers possible causes and troubleshooting strategies. One of the Kalos techs came across an overheating compressor case that looked like a textbook TXV problem: the superheat was high at the condensing unit on the compressor side. However, the air handler superheat was appropriate, and the suction pressure was low. TXVs, however, respond to the superheat dropping and reduce the pressure even

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01:26:39

Troubleshooting & Commissioning Q&A

HVAC School - For Techs, By Techs ·

2020/08/13

In this podcast episode, Kaleb, Joe, Eric, and Bryan answer some troubleshooting and commissioning questions from Facebook. Whether we're talking about troubleshooting, commissioning, or any other HVAC/R task, the best training is on-the-job training. Meetings, educational videos, and quizzes also help to a lesser extent, but bypassing training altogether is a mistake. Senior techs can also become better diagnosticians when they teach others. "The Diagnostic Game" is an especially useful tool to

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47:54

Advanced Fresh Air w/ CERV2

HVAC School - For Techs, By Techs ·

2020/08/06

In this podcast episode, Ty Newell from Build Equinox comes on to discuss the CERV2 and how it embodies "advanced fresh air." The CERV2 is the second-generation version of the CERV. A basic ERV allows for discharge air leaving the home to pass the intake air. When the airstreams cross through a core, there is an exchange of sensible and latent energy. The ERV may promote dehumidification and cooling of the incoming air. The CERV is a form of ERV technology, but it addresses the issues that may arise

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41:07

Combustion Analyzer Facts and Mistakes

HVAC School - For Techs, By Techs ·

2020/07/30

Our main man, Bill Spohn, joins us again to talk specifically about combustion. He also explains how to select and properly utilize a combustion analyzer. It's critical to do combustion analysis when you service equipment for the first time or just after installation. We need benchmarks, so that's when our combustion analyzers can come in handy. (Of course, you also want to use your senses to inspect the equipment.) Commissioning is another good time to bust out your combustion analyzer. Combustion

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19:57

Advice on Starting an HVAC/R Career - Short #98

HVAC School - For Techs, By Techs ·

2020/07/28

In this short podcast, Bryan shares some of his advice for people looking to get into the trades by starting an HVAC/R career. When you step into the HVAC/R trade, you must remember that you'll acquire a mix of skills and talents that all work together. You must reflect on yourself and see if you'll be a good fit for the trade. Do you enjoy working with your mind and your hands? Do you enjoy working to some degree? If you don't like pressure or dislike working with your mind or hands, then the

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35:01

Air Flow Hood Considerations w/ Dwyer

HVAC School - For Techs, By Techs ·

2020/07/23

Jaden Lane joins us to discuss some best practices when using an air flow hood. She also explains how the Dwyer Smart is innovating in the hood space. An air flow hood is an excellent tool, but we can't just assume that it'll work correctly in any system. Various vents and diffusers can cause different flow patterns to reach the hood, so you can get an incorrect reading if the flow hood is not aware of the flow pattern. Unless we give the hood background on what's going on in the duct, there's no

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42:00

3D Duct Modeling For Residential

HVAC School - For Techs, By Techs ·

2020/07/16

Russ King joins us to discuss simplifying duct design for residential contractors. We focus on using 3D software for duct modeling. While computers are great tools for duct design, you must be careful with them. Computer technology doesn't correct your mistakes; it allows you to make mistakes more quickly. Russ made 3D software specifically for duct modeling, and its goal is to help technicians/contractors with duct designs and equipment sizing. The software is good for quick duct design, can

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01:06:15

How to Effectively Choose and Use Test Instruments

HVAC School - For Techs, By Techs ·

2020/07/09

Bill Spohn with TruTech Tools joins us to talk about why being “approximately correct” is better than being “exactly wrong” when it comes to test instruments. When you see a number, that doesn't necessarily mean that you're dealing with a number you're supposed to see. For example, nitric oxide can present as "false CO" to a carbon monoxide sensor. Test instruments that mistake nitric oxide as carbon monoxide will give a different reading than ones that don't pick up nitric oxide as CO, but that

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56:05

Going Deep on IAQ Sensors and Instruments

HVAC School - For Techs, By Techs ·

2020/07/02

Bernadette Shahin of Aeroqual joins Bryan and Kaleb as they all dig very deep into indoor air quality (IAQ) sensors and instruments. They also cover the certainty and uncertainty of measurements. Reference method instruments generally have to operate within a set of parameters, notably a temperature range. Gas laws make the gases act differently, so you want the temperatures and pressures to stay within a range that allows you to measure the air conditions effectively. While we can use reference

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01:18:40

VRF and VRV Piping and Installation Overview

HVAC School - For Techs, By Techs ·

2020/06/25

Jordan Cummings is back to discuss some of the most important points in the proper installation of VRF and VRV systems. We especially cover piping best practices. When it comes to piping, the biggest concerns on VRF and VRV systems are making sure the piping can handle the refrigerant velocity and ensuring proper oil return. Most VRF systems use PVE oil, but you still want to be cognizant of oil type, as not all manufacturers use PVE. You must consider fittings, length, and elevation changes when

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55:14

Time Management for HVAC Techs

HVAC School - For Techs, By Techs ·

2020/06/18

Bryan and Eric Mele have a relaxed conversation on time management on the job. They also explain how to manage time in life as a whole. Some people are naturally fast because they cut corners in the name of time management. Instead, something Eric has learned to do is optimize his processes. He gets his work done a lot more quickly because he knows how to get the most out of the trips to his truck. Eric is also familiar with the tasks to perform them confidently, and he knows which diagnostic tools

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12:54

Suction Line Traps - Short #97

HVAC School - For Techs, By Techs ·

2020/06/16

In this short podcast episode, Bryan explains what suction line traps and inverted traps are. He also covers the purposes they serve. It's a bit hard to find literature on suction line traps, so it's always best to read the manual and follow the manufacturer's guidelines. We traditionally use P-traps on suction lines to hold oil and let it go up the walls of the refrigerant piping. You need enough velocity to lift oil (mineral or alkylbenzene) up the riser. We know that POE carries much easier with

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21:09

Preventing and Overcoming Price Objections - Short #96

HVAC School - For Techs, By Techs ·

2020/06/09

In this short podcast episode, Bryan explains how you can prevent and overcome price objections in your HVAC business. You can prevent price objections by avoiding the "budget" reputation. If your company establishes itself as a "budget" or "cheap" company, you will attract coupon-clipper customers. Coupon-clippers can be difficult to work with because of how cost-conscious they are. Customers who aren't looking for a deal will be less likely to object to pricing. You also don't want to shy away

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15:46

Disappearing Latent Capacity - Short #95

HVAC School - For Techs, By Techs ·

2020/05/26

In this short podcast, Bryan explains why latent capacity is prone to disappearing. He also explains what actually happens when the latent capacity drops. When you measure enthalpy split across the coil, you'll learn that the equipment design makes it perform to AHRI design conditions. Those design conditions are 95-degree outdoor temperature and 80-degree indoor temperature at 50% indoor relative humidity. So, the A/C system must remove a lot of moisture. However, we don't usually run A/C units for

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31:04

Demand Cooling in Low Temp R22 w/ Jeremy Smith

HVAC School - For Techs, By Techs ·

2020/05/21

In this podcast, Jeremy Smith joins us to discuss demand cooling in low-temperature applications that use R-22 refrigerant. R-22 is NOT an ideal low-temperature refrigerant because it leads to high compression ratios. The discharge gas also gets really hot and can burn up the oil in the system. (The head of the compressor is even hotter than the discharge line, so if the temperature is high enough to cause oil breakdown in the discharge line, it's almost surely worse inside the compressor). However,

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881 results

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