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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

55:20

FURNACE TALK #LIVE

HVAC School - For Techs, By Techs ·

2019/12/20

In this live podcast episode from the Castbox app, we have four techs join us to talk about common furnace issues and best practices. Those of us in heat-pump-dominant markets rarely have to worry about common furnace issues related to gas pressure and flow. In that same vein, we also don't have to worry about clocking the gas meter, which is a common practice on gas furnaces. Checking input and performing combustion analysis is critical to the diagnostic process AND can give you an idea of the

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33:51

Mixed Air Temperature w/ David Richardson

HVAC School - For Techs, By Techs ·

2019/12/19

David Richardson with NCI, author of Duct Dynasty, joins us on the podcast to talk about mixed air temperature and more topics of interest. When you bring outside air into the home, you introduce positive pressure into the home. That way, you can offset air lost via mechanical ventilation or through cracks, improving air quality. We often assume that the building will "breathe," but tighter constructions make it difficult for the home to bring in enough fresh air to offset harmful chemicals and

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14:39

Short #84 - Power Passing vs. Consuming

HVAC School - For Techs, By Techs ·

2019/12/17

In this short podcast, Bryan briefly explains why we use a voltmeter to measure “voltage drop” across loads and switches. He also covers some of the differences between passing and consuming power. Many of us are naturals at using voltmeters already. Voltmeters have two leads, and those exist to measure the difference or potential between them. Voltage is a reference to what is going on between the leads; whenever resistance exists, we have a voltage drop. Resistance can sometimes be designed or

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51:49

Impactful HVAC/R Instruction

HVAC School - For Techs, By Techs ·

2019/12/12

Ty Branaman from NTI comes on the podcast to share his passion for teaching. He also discusses his approach to impactful HVAC/R instruction. It can be difficult for instructors to create an appropriate balance between teaching theory and practical knowledge. Students and trainees need to have technical skills in the field, but they also need a solid foundation. Impactful HVAC/R instruction requires a balance of the nerdy stuff and physical skills; good instructors put the theoretical parts simply

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15:03

Short #83 - Practical Safety Improvements

HVAC School - For Techs, By Techs ·

2019/12/10

In this short podcast, we take a quick look at Bryan’s take on practical safety improvements. He also discusses the safety year in review at Kalos. Kalos had a great year in terms of safety. As the managers look back on the year, they attribute their success to having a practical approach to safety. To make practical safety improvements, we must be safety-conscious without obsessing over the risks of our job. Our jobs always have an element of danger, and our goal should be to minimize those and

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55:50

Descaling Large Equipment

HVAC School - For Techs, By Techs ·

2019/12/05

Tim Fregeau from Goodway joins us to talk about descaling large equipment. He also discusses best practices and why they matter to you. Scale refers to mineral deposits that build up in any water source. Water can be brackish, rusty, muddy, or otherwise high in mineral content, and those minerals begin to accumulate on heat-transfer surfaces on large equipment. Scale can cause metallic components to weaken and leak, and it can block microchannel coils. The large equipment can't reject the heat

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11:33

Short #82 - Brazing Temperature

HVAC School - For Techs, By Techs ·

2019/12/03

In this short podcast episode, Bryan talks a bit about brazing temperature. He also covers how to heat your copper to the proper temperature. You can use torches with oxyacetylene or air-acetylene tips. Joining two metals with an alloy above 840 degrees classifies as brazing; anything that uses an alloy to join two metals below 840 degrees is technically soldering. When you join two similar metals by melting the base material (not using an alloy), that's welding. Another temperature of interest is

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54:08

Heat Pumps, Charging & Defrost #LIVE

HVAC School - For Techs, By Techs ·

2019/12/01

In this live episode, we talk about heat pumps, why Bryan likes them, why other people don’t, charging and diagnosing them, and defrost. Even though heat pumps work best in warmer climates, they can theoretically work as long as the temperature is above absolute zero (-460 degrees F). Viewers across the USA install heat pumps in their markets, even in places with cold winters like Wisconsin. Ideally, the discharge line should be around 100 degrees above the outdoor temperature in heat mode. Although

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43:30

IT DOESN'T VOID THE WARRANTY #RANTCAST

HVAC School - For Techs, By Techs ·

2019/11/28

In this crossover episode (rantcast), Bryan talks with Gary from HVAC Know It All. They vent about some of the phrases that techs throw around that are often false. Technicians often throw around the phrase, "[X] will void your warranty." However, the truth is that manufacturers can't really void a warranty. Some modifications may go beyond the scope of the warranty, but you don't simply make modifications that "void" the warranty. Techs may say that something voids the warranty to shut down the

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10:23

Short #81 - Air vs. Nitrogen vs. Oxygen

HVAC School - For Techs, By Techs ·

2019/11/26

In this short podcast, Bryan discusses the differences between air, nitrogen, and oxygen. He also explains why we should only use nitrogen for purging, flowing, and pressurization. You DON'T want to pressurize line sets with air because air contains water vapor and oxygen. Water acts as an oxidizer, and moisture can turn POE oil acidic via hydrolysis. You cannot dry out POE oil, and the acid can lead to compressor burnout. Nitrogen is non-reactive (unlike oxygen) and does not contain water vapor

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54:45

Inverter Driven Systems & Over-Voltage #LIVE

HVAC School - For Techs, By Techs ·

2019/11/24

In this LIVE episode, we talk about diagnosing inverter-driven systems. We also discuss some of the issues and solutions for over-voltage. Inverter-driven systems, also called variable frequency drive equipment, provide comfort control across multiple zones in a building. Some systems may have multiple branch boxes that control various units throughout a building. These systems require a lot of patience; the diagnostic process can last a long time because you must test all of the terminals. Since

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57:09

High Efficiency Gas Furnaces, Common Issues w/ Jim...

HVAC School - For Techs, By Techs ·

2019/11/21

Jim Bergmann is back on the podcast. This time, he talks about common faults with high-efficiency 90+ condensing gas furnaces and their installation. Like A/C units, 90+ furnaces often suffer from clogged drain lines. Other common problems stem from issues with inputs, temperature rise across the appliance, trapping, and venting. On high-efficiency gas furnaces, procedures like clocking the gas meter are much more important than on an 80% gas furnace; you must clock the gas meter to get the proper

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15:20

Short #80 - 3 Differences Between Followers and Leaders

HVAC School - For Techs, By Techs ·

2019/11/19

Bryan explains the core differences between followers and leaders. There is nothing wrong with being a follower, but if you are ready to move into leadership roles, here are his tips. Leaders primarily leverage the work of other people. Conversely, followers have limits to their abilities and their earning potential; the leaders are the ones who set those limits. Good leaders create opportunities for others. Followers who attempt to be leaders are more likely to wait rather than move, complain

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58:52

Ductless and VRF - Good, Bad & Ugly #LIVE

HVAC School - For Techs, By Techs ·

2019/11/16

Some great live guests join the podcast to discuss the advantages, disadvantages, and challenges of ductless and VRF equipment. We started off working on ductless equipment with Mitsubishi, especially installing them in lanais. Sunrooms have large amounts of radiant heat coming in, and the heat load often warrants getting an A/C system just for the sunroom/lanai. We even began oversizing them a bit (which was a lesson learned). We also learned that mini-split ductless systems tend to have filthy

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47:51

Floating Head w/ Jamie Kitchen

HVAC School - For Techs, By Techs ·

2019/11/14

Jamie is back on the podcast. This time, he talks about the merits and pitfalls of floating head pressure and why you might care. There is a relationship between floating head and floating suction, though the latter is easier to understand. You can stage fans to come on at certain temperatures, but you'll always be running fans above a certain temperature. When temperatures are below that temperature, you can save energy by not running the fans. However, you still have to worry about feeding the

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16:15

Short #79 - Circuit Breaker Facts

HVAC School - For Techs, By Techs ·

2019/11/12

In this short podcast episode, Bryan talks about circuit breaker facts. He also explains why they trip, what they do, and some different types and considerations. Circuit breakers break the circuit during an overcurrent situation. These do NOT handle all overloads, such as locked rotor amps (LRA); these handle significant overloads, such as shorts (when current takes undesigned paths). In air conditioning, we can size our fuses and circuit breakers a bit larger than usual, which prevents tripping

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41:26

The Lost Art of Steam - Revisited

HVAC School - For Techs, By Techs ·

2019/11/07

In this episode from the archives, Dan Holohan joins us on the podcast and talks about his vast experience in the lost art of steam learned from long-dead men. Steam heating is a "lost art" nowadays; it has become increasingly uncommon and has been disappearing since the Vietnam War. Many people who understood steam heating either retired or died after the Vietnam War. Many elements of steam heating are difficult to understand or surprising. (For example, steam pressure has a surprising

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58:01

What Makes a White Shirt Tech #LIVE

HVAC School - For Techs, By Techs ·

2019/11/04

In this honest—maybe overly honest—live podcast, we talk about the dark side of white shirt techs. We also discuss ways the industry can make money while doing the fundamentals well. The term "white shirt" refers to a sales technician who prioritizes selling equipment over fieldwork; these technicians don't necessarily sell expensive products, but they lack technical expertise. The surefire way to tell if someone is a "white shirt" is to see if they can solve problems with their hands or if they

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39:29

Callback Prevention Principles

HVAC School - For Techs, By Techs ·

2019/10/31

In this podcast episode, Bert joins Bryan to talk about what he has learned to help prevent the dreaded callback on the job. Callbacks are bad news for customer service, time, and profit. However, the highest cost is the inconvenience caused to the customer. To reduce callbacks, Bert recommends communicating your expectations to your customer clearly; explain what the expected performance should be and how a customer should use their system. We need to do better at having conversations with the

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12:38

Short #78 - 7 Tips for Newbies

HVAC School - For Techs, By Techs ·

2019/10/29

This short podcast is for the newbies out there. For HVAC trade newbies, Bryan recommends applying 7 tips to help you win. When you start off in the trades, you'll want to check your mindset. Successful HVAC technicians are usually humble; recognize that you don't know everything. The truth is that nobody knows everything, and every other person has wisdom and knowledge to offer you. (However, don't mistake humility for a lack of confidence.) You'll also want to hang out with good people; you are

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882 results

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