Author name: Karthikeyan

Hi, I’m Karthikeyan Balamurugesan, a content creator and HVACR professional passionate about simplifying complex concepts in heating, ventilation, air conditioning, and refrigeration. With years of industry experience, I specialize in sharing practical insights on energy-efficient systems, data center cooling, and sustainable technologies. Through TheHVACLab, my goal is to empower engineers, consultants, and business owners with clear, actionable knowledge to make informed decisions and stay ahead in the industry. Let’s connect and explore the future of HVACR together!

Top 30 HVACR Acronyms Every Professional Should Know

Navigating the HVACR (Heating, Ventilation, Air Conditioning, and Refrigeration) industry involves understanding a myriad of acronyms. Whether you’re a seasoned engineer, a technician, or a facility manager, this guide will help you master the most commonly used acronyms in the field. Acronyms List A–Z Acronym Definition Significance AC Air Conditioning Central to all comfort cooling […]

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Top 5 Summer AC Maintenance Tips for Indian Homes and Offices

With temperatures soaring across India, your air conditioner becomes your most relied-upon appliance. But without proper maintenance, even the best AC can underperform, leading to discomfort and high energy bills. In this blog, we’ll explore the top 5 expert-recommended summer AC maintenance tips tailored for Indian climates. Whether you’re a homeowner or facility manager, these

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How to Calculate Heat Load in Cold Storage Design ?

Accurate heat load estimation is critical for the efficient design of cold storage refrigeration systems. Misjudging these loads can lead to oversized systems, increased energy costs, or worse—product spoilage. This blog dissects the typical heat load components in cold storage facilities and provides a step-by-step example to help HVAC engineers size refrigeration systems correctly. We’ll

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How AI is Revolutionizing the HVACR Industry in 2025

Artificial Intelligence (AI) is changing the world—and the HVACR (Heating, Ventilation, Air Conditioning, and Refrigeration) industry is no exception. As global demand for smarter, energy-efficient, and sustainable systems grows, AI is being adopted in residential, commercial, and industrial applications to improve efficiency, reduce costs, and enhance performance. In this blog, we explore how AI is

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Role of VFDs in HVACR Systems | Energy & Control Optimization

Controlling fan or pump speed used to be binary: on or off. But with Variable Frequency Drives (VFDs), HVACR systems now operate with precision and energy efficiency. This blog explores the pivotal role of VFDs in HVACR systems, showcasing how they improve operational flexibility, energy efficiency, and system longevity. We’ll cover principles of VFD operation,

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Top 7 ASHRAE Standards Every HVAC Engineer Must Know

In the rapidly evolving world of HVAC design and energy engineering, adherence to established standards is essential for achieving efficiency, safety, comfort, and sustainability. The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) publishes globally recognized standards that form the backbone of modern HVAC system design and operations. This article outlines the Top 7 ASHRAE Standards every

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Centrifugal Fan

How to Size a Fan for HVAC Systems | CFM | Total Static Pressure

Introduction Proper fan sizing is fundamental to HVAC performance and energy efficiency. An incorrectly sized fan or blower can result in poor airflow, system imbalance, energy wastage, or even premature component failure. Whether you’re designing for a rooftop unit, an AHU, or an exhaust system, selecting the right fan requires understanding airflow requirements, pressure losses,

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AHUs

Air Streams in AHUs: SA, RA, Fresh Air, Mixed Air & Exhaust Air Explained

Introduction In modern HVAC systems, air handling units (AHUs) are the core components responsible for conditioning and distributing air. Within AHUs, different air streams interact in carefully engineered pathways. Understanding the behavior of these air streams—supply, return, fresh (outdoor), mixed, and exhaust—is vital for HVAC engineers aiming to design efficient and compliant systems. This blog

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Top 10 Tips to Improve Chiller Performance

Chillers are among the most energy-intensive components in HVAC systems—often accounting for over 40% of total cooling energy use in large commercial buildings.Improving chiller performance isn’t just about energy savings—it directly impacts system reliability, occupant comfort, and lifecycle cost. In this blog, we’ll walk through 10 actionable tips based on ASHRAE guidelines and real-world field

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