Earth Day: Why Indoor Air Quality Matters

Earth Day is a reminder that protecting the planet starts right where we live and that includes the air inside our homes. While we often think of pollution as an outdoor issue, indoor air can actually be more concentrated with dust³, allergens⁴, VOCs⁵, and everyday pollutants from cooking, cleaning, pets, and tightly sealed modern homes. Improving your indoor air quality is one of the simplest, most impactful ways to support your health and reduce your environmental footprint.

Cleaner indoor air means fewer irritants circulating through your space, less reliance on chemical sprays or fragrances to mask odors¹, and a healthier environment for everyone under your roof. Whether you’re dealing with seasonal allergies, dust³ buildup, or just want a fresher home, a high‑quality air purifier can make a meaningful difference. PuroAir purifiers use advanced filtration to reduce airborne particles and odors¹, helping you create a cleaner, more comfortable living space. This small step has big benefits on Earth Day and beyond.

Why Choose PuroAir HEPA Air Purifiers this Earth Day

What is the best air purifier for a small home?

If you are looking to clean the air in a smaller space, like a bedroom, home office, nursery, apartment, studio, dorm or small house, look no further than the brand new PuroAir 100i Smart Air Purifier. This powerful little purifier is built to quickly filter and cycle through air in rooms up to 550 sq ft¹. With a physical footprint of less than 1 ft wide, the PuroAir 100i will blend into the smallest of spaces.

We also offer the innovative PuroAir 130i Smart Air Purifier for spaces up to 600 sq ft¹. Both of these units come with the PuroAir mobile app allowing  you to choose the purifying power directly from the palm of your hand. Convenience, simplicity and clean air!

What is the best air purifier for a medium home?

The best air purifier for medium rooms is the popular PuroAir 240 HEPA Air Purifier, which can clean indoor spaces up to 1,000 sq ft in an hour¹! This powerful and sleek air cleaner is a no-brainer for anyone looking to use an air purifier for the first time. Set it up in a high traffic area and feel the difference almost instantly!

What is the best air purifier for a large home?

The largest, and most powerful, unit in the our line-up is the PuroAir 400 HEPA Air Purifier. This heavy-hitter easily cleans the air in areas up to 2,000 sq ft1. Take it from the customer reviews - there’s nothing like it! With its powerful filtration, every room becomes a breath of fresh air. Discover the PuroAir 400, our most powerful air purifier, and create a cleaner, healthier space for your whole family to enjoy.

PuroAir HEPA Air Purifiers Impact on Sleep Quality

Per SleepScore Labs, exposure to allergens⁴ at night can irritate nasal passages and worsen nasal congestion. This may also lead to disruptive breathing and discomfort. SleepScore Labs tested 35 participants for a combined 800 hours of sleep to understand the difference between sleeping with and without a PuroAir air purifier. Here’s is what participants experienced with an air purifier:

• Overall, participants experienced 6% increase in deep sleep, with 4 more minutes per night.
• 80% of participants felt the air purifier reduced allergy symptoms and improved sleep.
• 97% were willing to recommend the PuroAir 240 air purifier to others.

PuroAir HEPA Air Purifier Benefits:

• PuroAir Air Purifier Filters have three layers of defense.
• PuroAir’s HEPA filters are designed to filter up to 99.9% of airborne particles as small as 0.1 microns¹. This includes most common allergy triggers like pollen⁴, dust³, dander⁴ and smoke⁴.
• CarbonTech™ Filter: In addition to the HEPA filter layer and pre-filter, PuroAir air purifiers have activated carbon filters that can absorb odors¹, and some gases.
• Two year warranty with every purifier purchase, PLUS a Lifetime Purifier Warranty with Filter Subscription.
• Pre-Filter screens for larger particles like dust³, hair, pollen⁴, carpet fibers and other visible debris.
• Easy installation and maintenance.
• Energy efficient design.
• PuroAir Filter Replacements are designed to last up to 90 days, or 3 months.

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Top Air Purifiers for Earth Day:

PuroAir’s top Earth Day picks make it easy to create a cleaner, healthier home no matter your space. The compact 100i is perfect for bedrooms and small rooms, delivering powerful filtration without taking up much space. The mid‑size 130i offers 360° air intake for rooms up to 600 sq ft¹, keeping everyday pollutants and allergens⁴ under control. The best-selling PuroAir 240 delivers powerful filtration and auto-mode to efficiently purify your home’s air 24/7. For whole‑home freshness, the PuroAir 400 provides maximum coverage and high‑capacity filtration for large, open areas. Together, these purifiers offer smart, effective ways to improve your indoor air quality and make a meaningful Earth Day upgrade.

Smart Purifiers for Smaller Spaces

PuroAir offers two great Earth Day options for smaller spaces: the compact 100i Smart Air Purifier, ideal for bedrooms, nurseries, home offices, and other cozy areas, delivering powerful filtration for rooms up to 550 sq ft¹ while staying quiet and unobtrusive. For slightly larger rooms, the 130i Smart Air Purifier provides expanded coverage up to 600 sq ft¹ with a 360° air intake that captures pollen⁴, dander⁴, and fine particles from every direction. Both models connect to the PuroAir mobile app for easy, hands‑on control, making them simple, effective upgrades for cleaner indoor air this spring.

Earth Day Buys for Living Rooms & Shared Spaces

Your living room is the heart of your home and Earth Day is the perfect time to make it a cleaner, healthier space. PuroAir air purifiers are designed to handle the demands of open‑concept layouts and busy households, delivering powerful filtration across larger areas where families gather, relax, and spend the most time. With generous coverage and high Clean Air Delivery Rate (CADR) performance, they work quickly to reduce airborne pollutants like dust³, smoke⁴, allergens⁴, and everyday odors¹, leaving your space feeling noticeably fresher. Whether you’re hosting friends or settling in for movie night, PuroAir helps maintain consistent, whole‑room air quality you can feel good about.

PuroAir 240 Air Purifier: A customer favorite for a reason, the PuroAir 240 combines strong filtration, CarbonTech activated carbon, a convenient size, and automatic air‑quality adjustments to keep your living room feeling clean and comfortable. Covering up to 1,000 sq ft in just one hour1, it’s an easy, impactful Earth Day upgrade that brings fresher air to the spaces you use most. Shop PuroAir 240

PuroAir 400 Air Purifier: For large rooms, open floor plans, or high‑traffic areas, the PuroAir 400 offers maximum cleaning power. It quietly filters up to 2,000 sq ft in just one hour1, making it a strong choice for households that want whole‑home freshness. Whether you’re tackling dust3, odors1, or seasonal allergens4, the 400 delivers consistent, high‑capacity filtration that supports a healthier indoor environment. Shop PuroAir 400

Bonus Product: The PuroAir Mega MERV 13 HVAC Filter delivers a powerful 3‑in‑1 boost to your home’s air quality. The Mega HVAC Filter is designed for purifying the air, capturing dust³ and dander⁴, and helping reduce odors¹ every time your system runs. It’s an easy, high‑impact upgrade that keeps your whole home feeling fresher.

Shop PuroAir Mega MERV 13 HVAC Filters

Best Air Purifier for Spring Allergies

Spring brings longer days, fresh blooms, and right on cue, higher pollen⁴ counts and seasonal allergens⁴. That makes Earth Day the perfect moment to focus on the quality of the air inside your home. For allergy sufferers, PuroAir air purifiers offer powerful, targeted relief with advanced HEPA performance and smart air‑quality monitoring. HEPA filtration captures up to 99.9% of microscopic allergens⁴, including pollen⁴, dust³, mold⁴, and pet dander⁴, helping reduce the triggers behind sneezing, congestion, and itchy eyes. Built-in sensors continuously track indoor air quality and automatically adjust fan speed (PuroAir 240 and PuroAir 400 models) when particle levels rise, delivering real‑time purification without any extra effort. The result is cleaner, more comfortable air and dependable relief day and night.

The PuroAir 240 and PuroAir 400 Air Purifiers both include an auto-adjusting sensor that will change the fan speed settings as indoor air quality changes. This feature helps capture indoor air pollution and odors¹, protecting your lungs day and night.

Additional Benefits of PuroAir HEPA Purifier Filters:

PuroAir HEPA filters go beyond capturing microscopic particles. They’re designed to create a cleaner, more comfortable home environment from every angle. In addition to HEPA filtration that reduces fine pollutants like dust³, pollen⁴, mold⁴, and dander⁴, each filter includes a CarbonTech™ Activated Carbon layer that targets what traditional HEPA media can’t. This highly porous carbon structure contains millions of tiny surface pores that work like a sponge, adsorbing odors¹, smoke⁴, and VOCs⁵ released from cooking, cleaning products, and everyday household activities.

By combining particle filtration with gas and odor¹ absorption, PuroAir filters offer a more complete approach to indoor air quality making them perfect for Earth Day and the spring season, when allergens⁴ and airborne irritants are at their peak. This triple‑layer design ensures your purifier not only removes harmful particles but also tackles the odors¹ and chemical pollutants that standard HEPA filters leave behind, helping you maintain a fresher, healthier, and more enjoyable living space.

How much do HEPA air purifiers cost?

PuroAir HEPA Air Purifiers range from under $100 to around $300, with each model designed for different room sizes and the unique air‑quality challenges that come with pets. This includes things like shedding, dander⁴, odors¹, and the extra pollen⁴ they track inside during spring.

Around $100: Ideal for bedrooms and pet‑specific spaces

The compact PuroAir 100i Smart HEPA Air Purifier is a great fit for smaller rooms or areas where you and our pets spend a lot of time. Despite its small size, it delivers powerful HEPA filtration for spaces up to 550 sq ft¹, making it perfect for bedrooms and nurseries.

The next size up is our innovative PuroAir 130i Smart HEPA Air Purifier. This WiFi-enabled air purifier can be controlled directly from a mobile device or tablet, making clean air always within reach. The 130i cleans indoor air in rooms up to 600 sq ft¹, designed for bedrooms, home offices and other smaller rooms.

Under $200: Best for medium rooms and high traffic areas

The best-selling PuroAir 240 HEPA Air Purifier is designed for powerful air filtration in small to medium sized rooms. If you are looking for a best-in-class air cleaning solution, then look no further! For rooms up to 1,000 sq ft¹, the PuroAir 240 will be your new favorite home appliance.

Under $300: Best for large rooms and multi‑pet homes

The PuroAir 400 HEPA Air Purifier is the most powerful option in the lineup, built for wide‑open living rooms, high-traffic areas and multi‑pet households. It can refresh the air in spaces up to 2,000 sq ft¹, giving you strong filtration for pollen⁴, dust³, dander⁴, odors¹, and the outdoor allergens⁴ that make their way inside your home.

PuroAir Air Purifier Comparison Table:

Buying Guide - How to Choose the Best Air Purifier

Why choose PuroAir Air Purifiers?

PuroAir air purifiers utilize HEPA filtration, reducing 99.9%¹ of common allergens⁴ from indoor air such as pollen⁴, dust³, mold⁴, and pet dander⁴. Recognized by professionals, these highly efficient air cleaning systems also boast smart features like air quality sensors, automatic adjustment modes, and quiet operation.

• HEPA filtration: Filters 99.9%¹ of allergens⁴, including pollen⁴, dust³, mold⁴, and pet dander⁴.
• Trusted by professionals: Often recommended by allergists and used in hospitals and labs.
• Smart features: Air quality sensors, auto-adjust modes, and quiet operation.

Key considerations before buying an air purifier:

Before investing in an air purifier, consider researching air purifiers that fit the following criteria:

Maintenance and Costs

PuroAir air purifiers are affordable and easy to set up with plug-and-play functionality. PuroAir offers convenient filter subscriptions and a lifetime warranty while enrolled.

• Filter replacement: Every 3 months depending on usage.
• Cost of filters: ~$35–$70 per replacement. Subscribe and save.
• Filter subscription: Receive replacement filters automatically.
• Warranty: 2-Year Warranty included, Lifetime Warranty with subscription.
• Energy usage: Energy efficient design. All of our products meet US Department of Energy’s energy efficiency standards, which is a thorough testing protocol to ensure that all PuroAir products are energy efficient for your home.
• Quiet operation: As low as 22 dB in Sleep Mode (PuroAir 240).

Who Should Buy One?

PuroAir HEPA air purifiers are beneficial for allergy sufferers, pet owners, city dwellers, and families.

• Allergy Sufferers: Reduces pollen⁴, pet dander⁴, or dust³.
• Pet Owners: Reduces fur and odors¹.
• Urban Dwellers: Filters pollution and smoke particles⁴.
• Parents: Improves air quality in nurseries and kids’ rooms.

PuroAir MERV 13 HVAC filters offer high-efficiency filtration without requiring a full HEPA system.

• Captures fine particles (1 micron)¹, including allergens⁴ and pollutants.
  
• Effective against PM2.5 pollution.
• Ideal for pet owners and central air systems.

Where to Buy

PuroAir Air Purifiers and Filters are available on the PuroAir website and on Amazon.

Our Mission

At PuroAir, our mission is: “Making clean, healthy indoor air accessible to everyone, everywhere.”

We’re committed to transparency, innovation, and integrity in everything we do. We promise to:

1. Offer higher quality air purification products
2. Lead advancements in air purification technology
3. Promote environmentally sustainable practices
4. Support community health-focused initiatives

We’re dedicated to providing clean air for everyone through both innovation and philanthropy. Learn more about our efforts on our Giving Back page.

100-Day Cleaner Air Guarantee

The 100-Day Cleaner Air Guarantee is our 100% Refund Return Policy. If you are unsatisfied with your Purifier purchase from PuroAir.com for any reason, you have 100 days from the date of shipment to request a full refund, including shipping charges. Purifiers will not be eligible for a return after 100 days. You may also cancel any subsequent subscriptions at the time of return, as well. Learn more about our return policy here: 100-Day Cleaner Air Guarantee.