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Category "evaporative cooler"

21Nov

Evaporative Cooling: India’s Answer to Beating the Heat

by Priyanka Gupta
evaporative cooler

Imagine walking into a factory in Indore on a 45 °C summer afternoon. Instead of the usual hot, suffocating air, you are welcomed by a cool, refreshing breeze. No air conditioners humming in the background, no massive power bills looming, just fresh, naturally cooled air.

That’s the magic of evaporative cooling. It is not a new idea; our ancestors used wet khus mats (vetiver grass) and earthen pots for cooling, but today, the same principle is powering modern, energy-efficient HVAC systems across India. And in hot, dry regions like Rajasthan, Gujarat, and Madhya Pradesh, it is proving to be a game-changer.

How It Works (The Simple Science)

Think about how you feel when sweat evaporates from your skin; it cools you instantly. Evaporative cooling uses that exact principle.

Hot outside air is pulled through water-soaked cooling pads. As the water evaporates, the air temperature drops, and a fan circulates that cool, fresh air indoors. The drier the air, the stronger the effect, making it perfect for much of India’s climate.

Why It is Perfect for Indian Climates

In cities like Jodhpur, Jaipur, Indore, and Nagpur, summers are long, hot, and dry. Here, evaporative cooling can reduce indoor temperatures by 12–20 °C, making warehouses, factories, gyms, banquet halls, auditoriums, hospitals, malls, showrooms, hotels, places of worship, schools, and homes comfortable without consuming massive amounts of electricity

See Our Case Study Videos: https://www.instagram.com/degreeday

Unlike air conditioners, which recycle the same stale air, evaporative coolers deliver 100% fresh outdoor air, a big plus for health in crowded workplaces and schools.

Benefits of Indian Businesses & Homes Love

1. Huge energy savings – Up to 80 to 90% less electricity than ACs, keeping power bills under control.
2. Lower investment – Easy to install and maintain; no complex refrigerants or compressors.
3. Eco-friendly – Just water and air—no harmful gases, no ozone damage.
4. Better indoor air quality – Fresh, filtered air improves comfort, reduces dust, and adds healthy humidity.
5. Boosts productivity – Comfortable workers mean fewer absentees and higher efficiency.

For industries like textiles in Surat, auto manufacturing in Pune, or warehouses in Delhi NCR, factories in Lucknow, these savings directly improve the bottom line.

Challenges to Keep in Mind

  • Works best in dry regions; less effective in humid states like Kerala or Bengal.
  • Needs a steady water supply, which can be a concern in drought-prone areas.
  • Requires regular cleaning of pads and tanks to prevent scaling or bacterial growth.
  • Adds some humidity, which may not suit all indoor environments.

But for much of central, western, and northern India, the benefits far outweigh the limitations.

Where It is Being Used in India

1. Factories & warehouses – Keeping workers cool at a fraction of AC costs.
2. Textile & garment units – Maintaining temperature control without damaging fabrics.
3. Agriculture & poultry farms – Creating the right environment for plants and livestock.
4. Educational institutions – Affordable comfort for schools and colleges.
5. Retail & commercial spaces – Especially in Tier-2 and Tier-3 cities, where energy costs are a concern.
6. Event venues – Large outdoor fans are common in wedding halls, pandals, and stadiums.

The Road Ahead for India

With rising electricity costs and government pushes toward energy efficiency, evaporative cooling is gaining attention as a sustainable HVAC solution. Innovations like solar-powered coolers, smart controls, and hybrid models are making the technology even more reliable for Indian conditions.

As India faces longer, harsher summers, this eco-friendly alternative to ACs will play a vital role in keeping people comfortable, cutting costs, and reducing carbon footprints.

Evaporative cooling is more than just a cost-saving option. It is a climate-smart solution designed for India’s toughest summers. Whether you are running a factory in Rajasthan, a warehouse in Madhya Pradesh, or even a school in Gujarat, this technology offers comfort, savings, and sustainability all in one package.

At Degree Day Pvt. Ltd., we design and deliver evaporative cooling solutions tailored for Indian industries, homes, and climates. If you are ready to cut electricity costs and keep cool naturally, let’s make it happen.

Recent Blogs

11Nov

Best HVAC Company in Lucknow

by Priyanka Gupta
Air Purifiers Bladeless Fans EPC Services evaporative cooler HVAC HVAC Ducts

Lucknow has always been a city of balance, a blend of tradition and progress, of history and innovation. As the skyline continues to rise and new businesses establish themselves across the city, one thing has become clear: comfort and air quality are no longer luxuries, but essentials.

That’s where Degree Day steps in. With over 25 years of experience and ISO 9001:2015 certification, Degree Day has established itself as a trusted name in the world of HVAC design, manufacturing, and turnkey solutions across North India. Whether it’s a hospital requiring precision air control or a commercial complex demanding energy efficiency, the company has earned a reputation for delivering results that last.

Need Advice?Want Product Catalogues?


More Than Just Air Conditioning: A Complete HVAC Experience

When people hear “HVAC,” they often think of cooling or heating systems. But true comfort goes beyond temperature. It’s about air quality, circulation, humidity, and even energy management.

Degree Day specializes in turnkey HVAC solutions, which means we handle every aspect of your project from the first consultation to the final commissioning. You don’t have to coordinate with multiple vendors or stress about technical details. Our experts take care of everything:

1. Site Evaluation: Understanding Your Space, Requirements, and Energy Needs.
2. System Design: Creating tailored solutions that perfectly fit your environment.
3. Installation: Flawless execution with safety and efficiency in mind.
4. Maintenance & Support: Routine inspections and reliable after-sales service to keep systems performing at their best.

It’s a smooth, worry-free experience, the way professional climate control should be.

Why Businesses Across Lucknow Trust Degree Day

Over the years, Degree Day has earned a reputation for precision, reliability, and genuine trust. Our journey has taken us across a wide range of industries, from advanced cleanrooms and large-scale manufacturing facilities to hospitals, retail spaces, and modern corporate offices.

In Lucknow and throughout Uttar Pradesh, we offer comprehensive HVAC solutions tailored to every type of space, including basement ventilation, cleanroom environments, hospitality setups, showrooms, residential complexes, commercial buildings, and full-scale industrial projects. Whatever the need, our focus remains the same: delivering comfort, efficiency, and performance that lasts.

Here’s what sets them apart:

1. Decades of Experience: With 25+ years in the HVAC industry, their team understands every technical and environmental challenge Lucknow presents.
2. Quality Without Compromise: All projects adhere to global standards, including ISHRAE and ASHRAE guidelines.
3. Energy Efficiency First: Their systems are designed to reduce energy costs while maintaining superior performance.
4. Customized Designs: Every project is unique, and so is every Degree Day solution.
5. Transparent Pricing: No hidden costs, no surprises, just honest, value-driven service.

From design to execution, Degree Day ensures that every system not only performs but also endures.

Trusted by India’s Leading Brands

Degree Day’s portfolio in Lucknow speaks volumes. Some of the region’s most respected names rely on our HVAC systems for efficient and reliable operations, a true mark of trust and capability.

Our Clients in Lucknow Include:
Kanpur Plastic, Viraj Constructions, Birla Dharamshala (Ayodhya), Lete Hue Hanuman Mandir, Safety Shoes Manufacturing Unit, Ex-CM Residence, Delhivery Warehouse (Lucknow), Ford Car Showroom, and many more.

Smart, Sustainable, and Ready for the Future

In today’s world, efficiency and sustainability go hand in hand. Degree Day integrates smart automation and eco-friendly HVAC technologies to help clients cut energy use without compromising comfort.

Our products & Services include centralized air conditioning, UVGI-based air purification, prefabricated ducts, Mist Cooling System, Bladeless Fans, Exhaust Fans, Basement Ventilation, HVAC Design, HVAC Projects, Clean Room Solution, HEPA Air Purifiers, Air Washer, Air Handling Units, Single, Dual and Hybrid Evaporative Cooling System, and smart energy control, all engineered to ensure clean, safe, and sustainable indoor environments.

Whether it’s a high-end commercial space or an industrial setup, Degree Day’s team ensures the perfect balance between technology, performance, and environmental responsibility.

Why Local Expertise Matters

Lucknow’s climate can be unpredictable sweltering summers, humid monsoons, and chilly winters. Generic systems simply don’t cut it here. Our deep understanding of local weather patterns and building needs means their solutions are built for real conditions, not assumptions.

We don’t just install machines; we design environments where people can work, heal, and live comfortably all year round.

Building Better Air, Together

Comfort isn’t just about cooling a room; it’s about creating spaces that help people feel better, work smarter, and breathe easier. That philosophy drives everything Degree Day does.

Whether you’re planning a new project or upgrading an existing system, Degree Day is ready to design, deliver, and maintain an HVAC solution that aligns with your vision and budget.

Quick Highlights

● 25+ years of HVAC expertise
● ISO 9001:2015 Certified
● Turnkey project design & execution
● Energy-efficient and eco-friendly systems
● Trusted by India’s leading brands

Frequently Asked Questions

1. What makes Degree Day the best HVAC company in Lucknow?

With 25+ years of experience and ISO 9001:2015 certification, Degree Day delivers reliable, high-performance HVAC systems. From design to maintenance, every project is tailored for efficiency, durability, and Lucknow’s unique climate.

2. What types of HVAC solutions does Degree Day offer?

They offer complete HVAC solutions – centralized AC, air purification (UVGI + HEPA), prefabricated ducts, air washers, evaporative air coolers, air purifiers, cleanroom systems, ventilation setups, and hybrid cooling for homes, offices, and industries.

3. Does Degree Day handle end-to-end HVAC projects?

Yes. Degree Day manages turnkey projects from site evaluation and design to installation, commissioning, and maintenance—ensuring a smooth, worry-free process.

4. Why is local HVAC expertise important for Lucknow projects?

Lucknow’s hot, humid climate needs specialized systems. Degree Day’s local experience ensures efficient, weather-optimized solutions that perform year-round.

5. Which leading clients trust Degree Day’s HVAC solutions in Lucknow?

Trusted by brands like Kanpur Plastic, Viraj Constructions, Birla Dharamshala (Ayodhya), Lete Hue Hanuman Mandir, and Ford Showroom, among others.

8Sep

Evaporative Cooling

by Priyanka Gupta
evaporative cooler

Imagine walking into a factory in Indore on a 45 °C summer afternoon. Instead of the usual hot, suffocating air, you are welcomed by a cool, refreshing breeze. No air conditioners humming in the background, no massive power bills looming, just fresh, naturally cooled air.

That’s the magic of evaporative cooling. It is not a new idea—our ancestors used wet khus mats (vetiver grass) and earthen pots for cooling but today, the same principle is powering modern, energy-efficient HVAC systems across India. And in hot, dry regions like Rajasthan, Gujarat, and Madhya Pradesh, it is proving to be a game-changer.

How It Works (The Simple Science)

Think about how you feel when sweat evaporates from your skin; it cools you instantly. Evaporative cooling uses that exact principle.

Hot outside air is pulled through water-soaked cooling pads. As the water evaporates, the air temperature drops, and a fan circulates that cool, fresh air indoors. The drier the air, the stronger the effect, making it perfect for much of India’s climate.

Why It is Perfect for Indian Climates

In cities like Jodhpur, Jaipur, Indore, and Nagpur, summers are long, hot, and dry. Here, evaporative cooling can reduce indoor temperatures by 12–20 °C, making warehouses, factories, gyms, banquet halls, auditoriums, hospitals, malls, showrooms, hotels, places of worship, schools, and homes comfortable without consuming massive amounts of electricity

See Our Case Study Videos: Degree Day (@degreeday)

Unlike air conditioners, which recycle the same stale air, evaporative coolers deliver 100% fresh outdoor air a big plus for health in crowded workplaces and schools.

Benefits of Indian Businesses & Homes Love

1. Huge energy savings – Up to 80 to 90% less electricity than ACs, keeping power bills under control.
2. Lower investment – Easy to install and maintain; no complex refrigerants or compressors.
3. Eco-friendly – Just water and air—no harmful gases, no ozone damage.
4. Better indoor air quality – Fresh, filtered air improves comfort, reduces dust, and adds healthy humidity.
5. Boosts productivity – Comfortable workers mean fewer absentees and higher efficiency.

For industries like textiles in Surat, auto manufacturing in Pune, or warehouses in Delhi NCR, and factories in Lucknow, these savings directly improve the bottom line.

Challenges to Keep in Mind

– Works best in dry regions; less effective in humid states like Kerala or Bengal.
– Needs a steady water supply, which can be a concern in drought-prone areas.
– Requires regular cleaning of pads and tanks to prevent scaling or bacterial growth.
– Adds some humidity, which may not suit all indoor environments.

But for much of central, western, and northern India, the benefits far outweigh the limitations.

Applications of Evaporative Cooling

  1. Factories & warehouses – Keeping workers cool at a fraction of AC costs.
  2. Textile & garment units – Maintaining temperature control without damaging fabrics.
  3. Agriculture & poultry farms – Creating the right environment for plants and livestock.
  4. Educational institutions – Affordable comfort for schools and colleges.
  5. Retail & commercial spaces – Especially in Tier-2 and Tier-3 cities, where energy costs are a concern.
  6. Event venues – Large outdoor fans are common in wedding halls, pandals, and stadiums.

With rising electricity costs and government pushes toward energy efficiency, evaporative cooling is gaining attention as a sustainable HVAC solution. Innovations like solar-powered coolers, smart controls, and hybrid models are making the technology even more reliable for Indian conditions.

As India faces longer, harsher summers, this eco-friendly alternative to ACs will play a vital role in keeping people comfortable, cutting costs, and reducing carbon footprints.

Evaporative cooling is more than just a cost-saving option. It is a climate-smart solution designed for India’s toughest summers. Whether you are running a factory in Rajasthan, a warehouse in Madhya Pradesh, or even a school in Gujarat, this technology offers comfort, savings, and sustainability all in one package.

At Degree Day Pvt. Ltd., we design and deliver evaporative cooling solutions tailored for Indian industries, homes, and climates. If you are ready to cut electricity costs and keep cool naturally, let’s make it happen.

Frequently Asked Questions (FAQs)

What is evaporative cooling, and how does it work?

Evaporative cooling uses water evaporation to cool hot air. Warm air passes through water-soaked pads, loses heat, and is circulated as cool, fresh air.

How is evaporative cooling different from air conditioning?

Unlike ACs, evaporative coolers don’t use compressors or refrigerants. They are energy-efficient, eco-friendly, and work best in ventilated or open spaces.

Where is evaporative cooling most effective?

It’s ideal for large, well-ventilated or semi-open spaces such as warehouses, factories, workshops, greenhouses, and livestock farms. A minimum space of 500 sq. ft. is recommended for effective performance.

How much cooling can I expect?

Depending on climate and humidity, evaporative coolers can lower the temperature by 7°C to 15°C (13°F to 27°F).

Is evaporative cooling energy-efficient?

Yes. It consumes up to 80–90% less electricity compared to traditional air conditioning systems.

Latest Posts

27Aug

Galvanized Iron (GI) vs. Stainless Steel Ducts: Which Performs Better?

by Priyanka Gupta
evaporative cooler

When it comes to HVAC systems, ducts are often overlooked, yet they are the backbone of air distribution. Without properly designed and durable ductwork, even the most advanced cooling or ventilation system cannot perform at its best. One of the most important decisions in ductwork design is choosing the right duct material.

Not Sure Whether to Choose GI or SS Ducts? Contact Us


Two of the most common options are Galvanized Iron (GI) ducts and Stainless Steel ducts. Each comes with its own advantages, limitations, and ideal applications. While GI is widely used for commercial spaces due to its affordability, stainless steel is preferred in critical facilities where hygiene, safety, and long-term durability are essential.

What Are GI and Stainless Steel Ducts?

Galvanized Iron (GI) Ducts

  • GI ducts are manufactured from mild steel sheets coated with zinc.
  • The zinc coating helps resist rust for several years.
  • They are lightweight, easy to fabricate, and cost-effective.
  • Commonly used in malls, offices, warehouses, and standard industrial facilities.
  • The biggest advantage is low upfront cost and wide availability.

Stainless Steel Ducts

  • Made from alloy steel containing chromium, which forms a protective oxide layer against corrosion.
  • Extremely durable and hygienic, making them suitable for sensitive environments.
  • Preferred in hospitals, food processing units, pharmaceutical plants, and laboratories.
  • The key advantage is long-term reliability with minimal maintenance.

Key Comparison: GI vs. Stainless Steel Ducts

1. Durability & Corrosion Resistance

  • GI Ducts: Initially strong, but once the zinc coating wears off, the iron underneath corrodes quickly. In humid or coastal regions, lifespan may be reduced to less than 10 years.
  • Stainless Steel Ducts: Naturally corrosion-resistant. Even after decades, stainless steel maintains structural integrity, making it ideal for moisture-rich or chemical-heavy environments.

2. Strength & Performance

  • GI Ducts: Adequate for standard airflow systems but may deform under high static pressure.
  • Stainless Steel Ducts: Withstand high pressures, fluctuating temperatures, and continuous operation without losing shape or efficiency.

3. Maintenance Requirements

  • GI Ducts: Require periodic inspections, repainting, or patching. If ignored, rust spreads, reducing efficiency and lifespan.
  • Stainless Steel Ducts: Virtually maintenance-free apart from routine cleaning. No repainting or recoating needed.

4. Cost Factor & Lifecycle Analysis

  • GI Ducts: Low upfront cost. A 1,000 sq. ft. ducting project with GI may cost 40–50% less initially compared to stainless steel. However, frequent maintenance and early replacement increase long-term expenses.
  • Stainless Steel Ducts: Higher upfront investment but lower lifetime cost. A stainless steel duct can last 20–30 years, compared to GI’s 10–15 years in challenging conditions.

5. Fire Resistance & Safety

  • GI Ducts: Zinc coating deteriorates in high temperatures, exposing the iron and weakening duct strength.
  • Stainless Steel Ducts: Withstand extreme heat longer, making them more suitable for fire-rated ducts and safety-critical applications.

6. Thermal Efficiency

  • GI Ducts: Conduct heat more easily, increasing energy losses if not insulated properly.
  • Stainless Steel Ducts: Better thermal resistance and work well with insulation materials to minimize losses.

7. Installation & Fabrication

  • GI Ducts: Easy to fabricate, bend, cut, and install. Contractors are more familiar with GI, reducing labor costs.
  • Stainless Steel Ducts: Heavier, harder to cut or weld, requiring skilled labor and specialized tools. Installation time may be longer.

8. Environmental Impact

  • GI Ducts: Shorter lifespan means more frequent replacements and higher material waste.
  • Stainless Steel Ducts: 100% recyclable and longer-lasting, reducing overall environmental impact.

Global Industry Trends

  • In India and Southeast Asia, GI ducts dominate due to cost sensitivity, especially in malls and office spaces.
  • In developed countries like the US and Europe, stainless steel ducts are increasingly used in critical industries due to stricter regulations on hygiene and sustainability.
  • The Middle East prefers stainless steel in coastal cities where humidity and salt air reduce GI duct lifespan significantly.

Which One Should You Choose?

The decision depends on application, budget, and environment.

Choose GI Ducts if:

– You are working on a budget-conscious project.
– The environment is low-risk (dry, non-corrosive).
– Installation speed is a priority.

Choose Stainless Steel Ducts if:

– Hygiene and safety are top priorities (healthcare, food, pharma).
– The environment is humid, coastal, or chemically active.
– You want long-term savings with minimal maintenance.

Degree Day Expertise: Central India’s Leading HVAC Manufacturer

For over 25 years, Degree Day Pvt. Ltd. has been shaping the HVAC industry with energy-efficient, durable, and high-performance solutions. Founded in 2000, Degree Day has grown to become Central India’s largest HVAC manufacturer. Our state-of-the-art manufacturing unit in Indore is equipped with modern machinery for large-scale production. We deliver PAN India, catering to projects ranging from commercial malls and factories to critical healthcare and pharmaceutical environments. Beyond ducts, we offer a comprehensive HVAC product range:

1. Industrial & residential air coolers
2. Air Handling Units (AHU)
3. Medical Grade Air Purifiers
4. Single/Dual Stage Evaporative Coolers
5. Bladeless Fans for modern comfort

With two decades of expertise, our solutions are trusted for quality, reliability, and efficiency, making us a preferred partner for contractors, consultants, and industries across India.

Not Sure Whether to Choose GI or SS Ducts? Contact Us

Both Galvanized Iron (GI) ducts and Stainless Steel ducts play a significant role in HVAC system design.

– GI ducts are budget-friendly and easy to install, making them the go-to choice for malls, offices, and warehouses.
– Stainless steel ducts are the premium choice, delivering unmatched durability, hygiene, and safety for critical environments like hospitals, cleanrooms, and food industries.

At Degree Day Pvt. Ltd., we understand that every project is unique. With over 25 years of experience, in-house manufacturing, and a wide product portfolio, we guide clients in selecting the right ducting and HVAC solutions to maximize performance and long-term value.

Whether you need cost-effective GI ducts for a commercial project or stainless steel ducts for a healthcare facility, Degree Day delivers quality you can trust – PAN India.

Related Articles

22Jul

Is evaporative cooling eco-friendly?

by Priyanka Gupta
evaporative cooler HVAC

Yes, evaporative cooling is eco-friendly because it doesn’t use a compressor and, hence, there is no chemical refrigerant involved. No Compressor = No refrigerant = Eco-friendly Cooling.

1. Uses Very Little Electricity

Regular air conditioners use a lot of power — around 8 kW per hour for a 1000 sq. ft. area. But a Greencon E-Series evaporative cooler for the same space uses only 1.1 kW per hour. That’s a 93% energy saving! Over 10 years (assuming 8 hours of use daily, 300 days a year), the difference becomes huge:

AC: 157,440 kWh
Evaporative Cooler: 21,648 kWh
Power saved: 135,792 kWh

2. CO₂ Emission Reduction

In India, every unit (kWh) of electricity causes about 0.82 kg of CO₂ emissions. So, by using an evaporative cooler instead of AC, you save over 111 tonnes of CO₂ in 10 years — for just one 1000 sq. ft. space.

3. As Good As Planting Thousands of Trees

A mature tree absorbs about 22 kg of CO₂ per year. So using an evaporative cooler instead of AC for 10 years is equal to planting 6,172 trees!

4. No Harmful Refrigerants

Air conditioners use gases like CFCs and HFCs, which can damage the ozone layer and add to global warming. Evaporative coolers don’t use any refrigerants — just air and water. Simple, safe, and sustainable.

5. Brings in Fresh Air

Evaporative coolers work by pulling in 100% outside air, cooling it with water, and then sending it indoors. This keeps the air fresh and clean — unlike ACs that recycle the same indoor air again and again.

Evaporative cooling is Energy-efficient, Non-polluting, Cost-effective, and Climate-friendly. Whether you are cooling a home, office, warehouse, or factory, switching to evaporative cooling is a smart move for your comfort, your budget, and the planet.