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!

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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What is COP vs EER vs SEER: Which HVAC Efficiency Rating Saves You the Most Money?

If you’re shopping for an energy-efficient air conditioner or heat pump, you’ve probably come across the terms COP, EER, and SEER. Understanding these HVAC efficiency ratings can help you make the smartest decision to reduce your electricity bills and improve comfort.. While these ratings might seem technical, they play a crucial role in determining how

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Energy-efficient home with an outdoor heat pump installed.

How to Choose the Right Heat Pump: A Complete Buyer’s Guide

Why Heat Pumps Are Gaining Popularity Have you ever wondered how to keep your home comfortable year-round while cutting down on energy bills? Heat pumps are quickly becoming the go-to solution for homeowners. With rising electricity costs, evolving climate conditions, and generous government incentives, switching to a heat pump is no longer just an option—it’s

How to Choose the Right Heat Pump: A Complete Buyer’s Guide Read Post »

High-angle shot of HVAC units on a city building's rooftop, showcasing industrial infrastructure.

Cooling Tower Maintenance Tips | Boost Efficiency & Save Energy

Cooling towers are crucial for commercial, industrial, and HVAC systems, helping remove heat efficiently. Proper maintenance doesn’t just enhance performance—it significantly cuts energy costs and extends equipment life. This guide provides essential cooling tower maintenance tips, expert insights, and real-world solutions. What is a Cooling Tower? A cooling tower removes heat from water through evaporation,

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How Can I Reduce My Energy Bills? Lighting Solutions

Lighting retrofits are essential for optimizing energy efficiency, reducing costs, and improving sustainability across commercial, industrial, and institutional facilities. According to the International Energy Agency (IEA, 2022), lighting accounts for nearly 15% of global electricity consumption and contributes to 5% of worldwide CO₂ emissions. The U.S. Department of Energy (DOE, 2023) estimates that switching to energy-efficient lighting could lead to over $30 billion in

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A close-up of a glowing vintage Edison bulb creating a warm atmosphere.

Lighting Retrofit Calculator – Energy Savings & Payback Analysis

Lighting Retrofit Calculator Lighting Retrofit Calculator Based on ASHRAE 90.1, IESNA, ECBC, and LEED Standards Select Facility Type: Office (500 lx)Conference Room (750 lx)Retail Store (1000 lx)Warehouse (300 lx)Classroom (500 lx)Hospital (General Areas) (1000 lx)Hospital (ICU/OT) (1500 lx)Parking Areas (50 lx)Corridors & Hallways (100 lx)Factories (Precision Work) (750 lx) Enter Room Area (m²): Total Lux

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Best Refrigerators in India (2025) Under ₹20,000 – Top LG, Samsung & Whirlpool Models Compared

Looking for the best refrigerator under ₹20,000 that offers both energy efficiency and ample storage? With so many options available, it can be overwhelming to choose the right model. In this comprehensive comparison, we’ve rounded up the top energy-efficient refrigerators from LG, Samsung, and Whirlpool to help you make the best decision for your home

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