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JD Kelly

Company name: A/C Direct & StudentofHVAC

Position: Owner

JD Kelly (also known as StudentofHVAC) is a licensed HVAC contractor and is the owner-operator of A/C Direct, an Alabama-based residential air-conditioning service business. JD is also the content creator for the StudentofHVAC social media pages and is a passionate enthusiast of HVAC training and education.

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Battery-Integrated HVAC Systems: The Concept of Load Shifting with Built-in Storage

Over the past several years that we’ve been discussing electrification as an industry, we’ve heard concerns about the electrical grid struggling with peak cooling demands. Within the past couple of months, the concept of integrating battery storage directly into HVAC equipment has emerged as a vital solution for load management. This concept turns a typical […]

Design and Performance Challenges of Air-Source Heat Pumps Across Diverse Climatic Conditions

This tech tip was inspired by Alex Meaney and Ed Janowiak’s session at NCI’s High-Performance Summit 2025: “Good Design Isn’t a Buffet: The Importance and Interconnection of Manuals J, S, and D.” Alex is a building science expert who worked at Wrightsoft (now MiTek) for several years before launching his consulting firm, Mean HVAC Consulting […]

Brownouts and How They’re Killing HVAC Equipment

HVAC technicians typically focus on diagnosing issues related to mechanical wear, refrigerant leaks, or control problems within the equipment. However, damage can also originate from external sources. For instance, a failed control board might be attributed to internal shorts or rubouts. Yet, the root cause could be external, such as the voltage spike that can […]

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Testimonials from the 6th Annual HVAC/R Training Symposium Part 2

Testimonials from the 6th Annual HVAC/R Training Symposium

UEI’s Latest HVAC Testing Tools | HVAC School at AHR 2025

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All About ESCO with Renee Tomlinson and MeasureQuick’s Latest Features with Jim Bergmann

In this short episode, the HVAC School team members talk with Jim Bergmann (measureQuick) and Renee Tomlinson (ESCO) about the latest and greatest that they brought to their booths at the 7th Annual HVACR Training Symposium. First, JD Kelly spoke with Renee about ESCO Institute's educational offerings. ESCO offers a mix of books and […]

Is HVAC School Worth It?

In this comprehensive discussion, Bryan sits down with Brad Cooper, an experienced HVAC instructor from Arkansas, and JD Kelly, a trade school graduate, to tackle one of the most pressing questions in the HVAC industry: Is trade school worth it? Rather than offering a simple yes or no answer, the trio dives deep into […]

Superheat Talk w/ JD Kelly

In this episode of the HVAC School podcast, host Bryan discusses superheat with guest JD, who recently co-authored an article on the topic with Ty Branaman. The conversation explores the often misunderstood concept of superheat, its importance in HVAC diagnostics, and common misconceptions technicians have when measuring and interpreting it. Bryan begins by sharing […]

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