Category "HVAC"

With rising air pollution in Indian cities, HEPA filters are now more important than ever. From Delhi’s smog to Mumbai’s humidity, air pollution is a common concern across India. With rising air pollution in Indian cities, HEPA filters are now more important than ever. From Delhi’s smog to Mumbai’s humidity, air pollution is a common concern across India.

In fact, Delhi’s air quality has become such a concern that authorities have even explored cloud seeding, a weather modification technique that induces artificial rainfall, as a temporary measure to reduce smog. While such outdoor solutions may provide short-term relief, maintaining clean indoor air remains crucial. That’s where HEPA filters come in, especially when used in air purifiers designed for Indian homes. Studies show that indoor air may contain as many, or even more, pollutants than outdoor environments. That’s where HEPA filters come in, especially when used in air purifiers designed for Indian homes.

Check why Degree Day’s HEPaire is the best air purifier for Delhi Air Pollution

In this blog, we will explain:

• What HEPA filters are
• How they work
• Why are they essential in air purifiers for the Indian climate and environment

What is a HEPA Filter?

HEPA stands for High-Efficiency Particulate Air filter. A true HEPA filter is certified to remove at least 99.97% of airborne particles that are 0.3 microns in size, including pollutants much smaller than dust. HEPA filters are used in Home air purifiers, Hospitals, and labs (Medical Grade Air Purifier), HVAC systems, Cars, airplanes, and public transport.

Be cautious of misleading labels. Terms like “HEPA-type” or “HEPA-like” may sound convincing, but they do not meet the official HEPA standards. These filters are often far less effective at capturing fine particles and may compromise air quality. Always look for certified true HEPA filters that comply with standards like EN1822 for guaranteed performance.

How Do HEPA Filters Work?

Unlike simple mesh filters, HEPA filters are made of a dense web of synthetic or glass fibers. As air passes through, particles are trapped by one of three key mechanisms:

1. Impaction: Large particles collide with the fibers and get stuck.
2. Interception: Medium-sized particles follow the airflow but brush against fibers and get caught.
3. Diffusion: Tiny particles like viruses move randomly (Brownian motion) and end up sticking to fibers.

This makes HEPA filters effective at capturing PM2.5 and even smaller particles, a major issue in Indian metros.

In cities like Delhi, Patna, or Kanpur, where AQI often crosses 300+, HEPA filters are crucial for indoor air safety. Check your City Air Quality Here

What Do HEPA Filters Remove?

HEPA filters are effective against:
● Dust and pollen
● Pet dander
● Mold spores
● Smoke and fine particles (PM2.5)
● Bacteria and some viruses

This makes them ideal for people suffering from allergies, asthma, or respiratory issues.

HEPA Filters in Air Purifiers

Most air purifiers in India from brands like Greencon, Coway, Philips, and Dyson use multi-stage purification systems that include:

1. Pre-filter – Traps large particles like hair and visible dust
2. HEPA filter – Captures fine particles like allergens, bacteria, and PM2.5
3. Activated carbon filter – Absorbs gases, VOCs, and odours

Look for “True HEPA” when buying an air purifier, which ensures tested and certified efficiency.

Greencon offers three high-performance HEPairé air purifiers to suit different space sizes and applications from residential bedrooms to ICUs and operating theatres. All models are equipped with H14 HEPA filters, G4 pre-filters, and select models feature UVGI sterilization.

Model Overview

1. HEPairé AURA – Residential/Office Use

● Ideal for: Bedrooms, cabins, small offices
● Key Features: Silent operation, compact design, efficient HEPA purification
● No UVGI – best for general air cleaning needs

2. HEPairé PURA – Multi-room, Clinical Use

● Ideal for: Clinics, OPDs, small patient rooms
● Includes: HEPA + UVGI to eliminate airborne germs and viruses
● Higher airflow and wider coverage

3. HEPairé ASTRIA – Hospital-Grade for Critical Spaces

● Ideal for: Minor OTs, ICUs, large OPDs
● Highest CADR and area coverage
● Designed to maintain sterile environments in healthcare facilities

Why Choose HEPairé?

● H14 HEPA (EN1822 Certified): Captures 99.97% of particles ≥0.3 microns
● UVGI Lamps (PURA & ASTRIA): Deactivates trapped pathogens
● Energy Efficient EC Fans: Low noise, high airflow, low power draw
● Designed for India: Meets CDC, ASHRAE & ISHRAE standards

Contact us for more details – Email Us: [email protected]

Benefits of Using HEPA Filters

1. Better Respiratory Health: Helps alleviate breathing problems in children, the elderly, and individuals with asthma.
2. Allergy Relief: Reduces triggers like dust mites, pollen, and pet fur.
3. Cleaner Indoor Spaces: Less dust accumulation on furniture and floors.
4. Post-COVID Safety: Adds an extra layer of protection against airborne viruses and bacteria.

Limitations and Maintenance

1. Cannot remove gases or smells: You’ll need a carbon filter for that.
2. Requires regular replacement: Replace every 6–12 months, depending on usage.
3. Wrong usage reduces efficiency: Place your purifier correctly and ensure it’s suitable for your room size.

In India, where outdoor air pollution is a daily concern, investing in an air purifier with a True HEPA filter is a smart and health-conscious decision. It not only improves air quality but also enhances comfort and well-being inside your home or office.

Frequently Asked Questions

Related Articles & News

• Direct vs Indirect Evaporative Cooling
• HEPA Filters for Clean Rooms
• Importance of Proper Ventilation in Commercial Kitchens
• Why Desert Coolers Fail in Big Spaces and How Central Air Cooling Solves This
• How PM2.5 and PM10 Impact Your Lungs

The HVAC industry is undergoing a significant transformation in 2025, driven by the urgent need for sustainability, smarter systems, and region-specific solutions. From refrigerant-free cooling to AI-powered energy optimization, the sector is evolving rapidly to meet environmental mandates and modern comfort expectations. Just like consumer technology and lifestyle trends highlighted by TheFamous.in, the HVAC industry is also changing rapidly, with sustainability, automation, and air quality taking center stage.

For HVAC consultants, contractors, and facility managers, staying ahead of these trends isn’t just an advantage; it is a necessity. Whether you are designing large-scale industrial cooling systems or retrofitting commercial buildings for better air quality, aligning with the latest innovations ensures better performance, compliance, and long-term cost savings.

In this blog, we explore the top trends shaping the HVAC industry in 2025, including:

‣ Refrigerant-Free Cooling Systems
‣ Smart HVAC & IoT Integration
‣ Energy Efficiency & Low-Carbon Cooling
‣ Air Purification & Indoor Air Quality (IAQ)
‣ Modular & Prefabricated HVAC Components
‣ Green Building Certifications
‣ Bladeless Fan Technology and Compact Personal Cooling
‣Localized HVAC Solutions

1. Refrigerant-Free Cooling Systems (Evaporative & Natural Ventilation)

● Due to rising environmental concerns and stricter ESG norms, there’s a major shift toward zero-refrigerant solutions.
● Evaporative cooling systems are gaining wide adoption in dry, industrial zones.
● Government incentives are supporting non-Freon-based systems.

Greencon’s Eco Series evaporative coolers directly align with this eco-conscious trend, offering powerful, refrigerant-free cooling designed for India’s demanding climates.

2. Smart HVAC Systems & IoT Integration

● Users expect app-based control, remote diagnostics, and AI-powered automation.
● IoT sensors monitor temperature, humidity, CO₂ levels, and predict maintenance needs.
● Integration with smart home assistants (Google, Alexa) is standard.

In Greencon coolers, you can control the unit remotely via Wi-Fi using your smartphone, making it easy to monitor performance and adjust settings from anywhere.

3. Energy Efficiency & Low-Carbon Cooling

● Energy-saving systems with EC motors, variable speed drives (VFDs), and adaptive control are in high demand.
● Companies are actively replacing old ducted ACs with more efficient systems.

Read Now: Why Decarbonisation is the Need of the Hour

4. Air Purification & Indoor Air Quality (IAQ)

● Post-COVID, IAQ remains a huge priority especially in healthcare, schools, and offices.
● Growth in demand for medical-grade HEPA air purifiers, UV-C sterilization, and air quality monitoring.
● Dual-function units (fan + purifier) are becoming mainstream.

Read Why Indoor Air Quality Matters

5. Modular & Prefabricated HVAC Components

● Contractors prefer modular systems for quick deployment and less site work.
● Pre-Fab ducts, modular air handlers, and plug-and-play fans are reducing project timelines.

6. Sustainable HVAC in Green Building Certifications (LEED, IGBC, GRIHA)

● HVAC systems now play a key role in qualifying for green building ratings.
● Builders and architects demand low-energy, low-noise, and sustainable cooling options.

7. Bladeless Fan Technology & Compact Personal Cooling

● Rising popularity of aesthetic, compact, and quiet cooling for work-from-home and commercial interiors. Products that combine design, function, and portability are a hit.
● Bladeless fans like Tripure not only enhance visual appeal but also promote energy efficiency; they improve local thermal comfort, allowing ACs to run at higher set temperatures. Ideal for cabins, meeting rooms, kitchens, receptions, or retrofit areas with high heat loads, they provide targeted airflow where regular fans may not fit, making them perfect for modern, mixed-use spaces.

8. Localized HVAC Solutions for Indian Climate Zones

● One-size-fits-all is over. Customized HVAC strategies tailored to dry, humid, or composite climates are being implemented.
● Regional players like Degree Day are gaining preference due to local experience + faster service.

Key Takeaway for HVAC Brands: To stay relevant in 2025 and beyond, HVAC companies must focus on:

● Smart controls & data
● Sustainable & non-refrigerant cooling
● Energy savings
● Personalized, compact devices
● Cleaner air delivery
● Faster, modular installations

Frequently Asked Questions

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• Direct vs Indirect Evaporative Cooling
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• Importance of Proper Ventilation in Commercial Kitchens
• Why Desert Coolers Fail in Big Spaces and How Central Air Cooling Solves This
• How PM2.5 and PM10 Impact Your Lungs

If you are managing or designing the HVAC system for an industrial facility, then understanding CFM is not just helpful – it is necessary. In this guide, we will explain what the CFM (cubic feet per minute) in HVAC means, why it plays an important role in the environment of your factory, and how it can be right, improve efficiency, air quality, and cost savings.

What Is CFM in HVAC?

CFM (cubic feet per minute) is a measure of airflow volume. This tells you how much air is taken in by your HVAC system every minute. In simple terms, “CFM is the amount of air that your HVAC system can supply or remove from one place per minute.”

It’s a crucial metric in:

• Ventilation systems
• Air coolers and exhausts
• Air handlers (AHUs)
• Duct design and distribution
• Industrial air purification systems

Why Is CFM Important for Your Factory?

Factories work in an environment with high temperatures, pollutants, smoke, and machinery. Why the right CFM here is an important factor for industrial HVAC performance:

1. Maintains Indoor Air Quality (IAQ): Manufacturing units release dust, smoke, chemical vapor, and heat. The proper CFM ensures that it is diluted and removed efficiently, reduces health risks for workers, and ensures compliance with local ventilation rules.

2. Controls Temperature and Humidity: A higher CFM means more airflow, which helps regulate temperature and control humidity in large spaces. It is important for:

• Worker comfort
• Machine performance
• Product quality in sensitive environments (like food or pharma)

See Our Case Study Videos on Food Industries-
1. Mumbai Food Processing Unit – https://www.instagram.com/p/DLCAQTVRNFA/
2. Lucknow Food Manufacturing Unit – https://www.instagram.com/p/DJjYafWxOpp/

3. Improves Energy Efficiency: An HVAC system with the right CFM reduces energy bills, extends system life, and improves return on investment.

4. Ensures Equipment Longevity: Poor airflow can cause:

– Overheating of machinery
– Moisture buildup in ducts
– Pressure imbalance

CFM optimization prevents such issues and minimizes maintenance downtime.

5. Supports Air Distribution Planning: The correct CFM ensures that every corner of your factory gets uniform air, whether it is for cooling, heating, or ventilation. This is important for large production floors, assembly lines, or warehouses.

How to Calculate CFM Requirement for Your Factory

Here’s a basic way to estimate your factory’s CFM needs:

Step 1: Measure Volume of Space

Volume= Length × Width × Ceiling Height

Example:

• Factory size = 10,000 sq. ft.
• Ceiling height = 15 ft.
• Volume = 10,000 × 15 = 150,000 cubic feet

Step 2: Determine Required Air Changes Per Hour (ACPH)

Based on factory type:

– Light manufacturing = 20-40 ACH
– Heavy industrial = 40–60 ACH

Step 3: Convert to CFM

Let’s say you need 20 ACH

Required CFM = Volume × ACPH (ACPH – Air Changes Per Hour)

= 150,000 × 20 /60​ = 50,000 CFM

This means your HVAC system should collectively provide 50,000 CFM for optimal performance.

CFM vs. Other HVAC Terms

Greencon: Industrial Cooling Systems Engineered for Performance

At Greencon, we are experts in evaporative cooling systems, air handling units (AHUs), Industrial Air Purifiers, and Smart Ducting Solutions. Our products are engineered to deliver:

• High CFM ratings for large spaces
• Energy-efficient cooling
• Custom airflow design based on your facility’s structure

Would you need help calculating CFM or designing an HVAC solution for your factory? Please reach out to our team for expert guidance.

CFM is the Lifeline of Your HVAC System

Understanding and correctly applying CFM ensures:

• Proper ventilation
• Comfort and safety for your team
• Energy savings
• Compliance with industrial air standards

Whether you are installing a new plant or upgrading your current HVAC Infrastructure, CFM is A Priority in Your Design Process.

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