Alen 35i HEPA Air Purifier Alternatives: 6 Similar Picks Compared
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The alen 35i hepa air purifier alternatives list helps you find units with similar specifications if the original does not fit your space or budget. This Alen model covers 1,400 square feet with an H13 HEPA filter and includes a SmartSensor for automatic fan adjustment. It also features a compact design that measures 13 by 7.6 by 20.6 inches. You might look for other options if you need a smaller footprint, a different brand, or additional smart home connectivity features.
We selected these 6 alternatives because their core specs overlap with the Alen BreatheSmart 35i. The list includes units from brands like Coway, PuroAir, and Honeywell. Each option offers HEPA filtration, though coverage areas and sensor types vary. Some picks prioritize washable filters, while others focus on raw air cleaning capacity for large rooms. You can compare these models to find the right balance of size, filtration power, and control methods for your specific needs.
Our top pick: Alen BreatheSmart Large Room Air Purifier.
How Each Alternative Compares
Coway Smart HEPA Air Purifier
The Coway AP-1519P swaps the Alen’s large room focus for smart home integration. It supports Wi-Fi, app control, and Alexa, which the Alen lacks. This model is smaller, measuring 16.8 by 18.3 inches, and targets medium-sized rooms rather than the Alen’s 1,400 square feet. You get washable filters, reducing long-term maintenance costs. The Coway prioritizes connectivity and filter reusability over raw coverage area. If you want to monitor air quality from your phone or need a unit that fits in tighter spaces, this is a practical choice. You give up the Alen’s sleep-focused pink noise and extensive large-room coverage.
PuroAir HEPA Air Purifier 2-Pack
The PuroAir 240 comes in a 2-Pack, offering a different approach to coverage. Instead of one large unit, you get two separate purifiers, each handling up to 1,000 square feet. This setup is ideal for covering multiple small rooms or bedrooms simultaneously. The Alen 35i is a single unit designed for one large space. The PuroAir units are narrower, at 10.6 inches wide, making them easier to place in various rooms. You gain flexibility in placement but lose the centralized air cleaning of a single large device. This option suits households with multiple bedrooms needing individual attention rather than one open-plan living area.
Sans Mini True HEPA Air Purifier
The Sans Mini is a compact option designed for small bedrooms and quiet spaces. It measures just 8 by 14 inches, significantly smaller than the Alen’s 13 by 20.6 inches. This unit prioritizes low noise and automatic air quality adjustment over large coverage area. You get a True HEPA filter in a mini form factor, which is perfect for desks or nightstands. The Alen covers up to 1,400 square feet, making the Sans unsuitable for large living areas. If you need silent operation in a small room and do not require high capacity, the Sans Mini is a focused, space-saving alternative to the larger Alen model.
Honeywell Allergen Plus 3-in-1 HEPA Purifier
The Honeywell HPA6000B focuses on real-time air quality feedback for large rooms. It provides immediate visual data on air conditions, similar to the Alen’s SmartSensor. However, it lacks the Alen’s specific sleep-enhancing features like pink noise generation. This model is designed for buyers who prioritize large room coverage and real-time feedback over smart app connectivity. It is a straightforward unit without Wi-Fi or app integration. You get reliable HEPA filtration and immediate air quality awareness. If you want to see air quality changes instantly without navigating a mobile app, this Honeywell model offers a direct, feedback-focused experience for large spaces.
Medify Air Large Room H13 HEPA Purifier
The Medify MA-50 delivers high CADR performance for large spaces, focusing on raw filtration power. It is built for smoke and allergen removal, making it suitable for environments with wildfire smoke or heavy pollution. Unlike the Alen, it does not emphasize smart features or app connectivity. You get serious cleaning capacity without the complexity of digital interfaces. The Medify is a robust unit for those who prioritize air cleaning results over convenience features. If you need a purifier that handles smoke and large particles efficiently in a big room, the Medify offers a no-frills, high-performance solution compared to the Alen’s balanced approach.
Honeywell Extra Large HEPA Air Purifier
The Honeywell HPA5300B offers the largest coverage area in this list, targeting up to 2,400 square feet. It includes an air quality monitor and auto mode for automatic allergen and odor control. This unit is significantly larger and heavier than the Alen, weighing 20.5 pounds. It suits you if you prioritize raw coverage area and automatic removal of pet dander and pollen over smart features. You get strong filtration for very large spaces without app connectivity. If your home is expansive and you need a single unit to handle high volumes of air, the HPA5300B provides greater capacity than the Alen 35i.
Quick picks
Our 7 picks
Alen BreatheSmart Large Room Air Purifier
Best for: large rooms needing quiet, sleep-focused purification
- Room Coverage
- 1,400 sq ft
- Filter Type
- H13 True HEPA
- Air Quality Sensor
- SmartSensor
- Smart Connectivity
- App
- Target Pollutant
- Pet Dander, Allergies, Dust
- Control Method
- App Control
View on Amazon: Alen BreatheSmart Large Room Air Purifier Affiliate link
The Alen BreatheSmart 35i uses an H13 HEPA filter to capture 99.9% of particles as small as 0.1 micron. It covers rooms up to 1,400 square feet and features a SmartSensor that adjusts fan speed based on air quality. Weighing 10 pounds, it operates quietly with pink noise to support sleep. This unit is designed for continuous 24/7 use in large bedrooms or living spaces.
Pros
- H13 HEPA filter captures 99.9% of particles down to 0.1 micron
- Covers up to 1,400 square feet efficiently
- SmartSensor adjusts fan speed with color-coded air quality feedback
- Operates quietly with pink noise for sleep enhancement
Cons
- 1,400 square foot coverage is smaller than competitors covering over 2,000 square feet
- No app control mentioned in specifications
- No remote control mentioned in specifications
Good fit if
- You need a purifier for a large bedroom or living room
- You prioritize quiet operation with pink noise for sleep
- You want automatic fan speed adjustment based on air quality
Skip if
- You require coverage for rooms larger than 1,400 square feet
- You need app-based smart home integration
- You prefer a remote control for operation
Verdict: Alen BreatheSmart 35i HEPA Air Purifier is a strong choice for allergy sufferers in large rooms who value quiet, sleep-friendly operation over maximum coverage area or smart app features.
Coway Smart HEPA Air Purifier
Best for: smart home integration and washable filters
- Room Coverage
- 1,575 sq ft
- Filter Type
- HEPA
- Smart Connectivity
- Wi-Fi, Alexa, Google Home
- Operating Modes
- Auto Mode, Eco Mode
- Pre-Filter Type
- Washable
- Target Pollutant
- Odor, Smoke, Allergies
View on Amazon: Coway Smart HEPA Air Purifier Affiliate link
The Coway Mighty cleans spaces up to 1,575 square feet in one hour. It uses a HyperCaptive filtration system with a washable pre-filter, active carbon filter, and HEPA filter to remove 99.97% of 0.3-micron particles. You can control it via the IoCare app, Amazon Alexa, or Google Home. Auto mode adjusts fan speed based on real-time air quality, while Eco mode saves energy by turning off the fan when air remains clean for 30 minutes.
Pros
- Covers up to 1,575 sq ft in 60 minutes
- Wi-Fi enabled with IoCare app and voice control
- Washable pre-filter reduces maintenance costs
- Auto mode adjusts fan speed to air quality
- Eco mode conserves energy when air is clean
Cons
- Smaller room coverage than competitors like Honeywell or Medify
- No physical remote control listed in specifications
- Heavier and bulkier than smaller desk units
Good fit if
- You want smart app and voice control for monitoring
- You need a unit for rooms up to 1,575 sq ft
- You prefer a washable pre-filter for easy maintenance
Skip if
- You need coverage for rooms larger than 1,575 sq ft
- You prefer a compact unit under 10 pounds
- You require a physical remote control
Verdict: Coway Mighty Wi-Fi Air Purifier fits users who want smart monitoring and washable filters for medium-sized rooms. It suits those who prioritize app control over raw coverage area.
PuroAir HEPA Air Purifier 2-Pack
Best for: multiple small rooms or bedrooms
- Room Coverage
- 1,000 sq ft
- Filter Type
- HEPA
- Air Quality Sensor
- PuroIQ particle sensor
- Operating Modes
- Auto-Mode, Sleep-Mode
- Room Type
- Bedroom
- Target Pollutant
- Odor, Smoke, Allergies
View on Amazon: PuroAir HEPA Air Purifier 2-Pack Affiliate link
The PuroAir 240 is a 2-pack of black air purifiers designed for rooms up to 1,000 square feet. Each unit uses a 3-layer HEPA and activated carbon filter to capture 99.9% of pollutants. It includes a smart particle sensor and a quiet sleep mode. This bundle suits you if you need to treat multiple bedrooms or smaller spaces without buying separate units.
Pros
- Covers 1,000 sq ft per unit
- 3-layer HEPA and carbon filtration
- Smart particle sensor for auto mode
- Quiet sleep mode operation
Cons
- 1,000 sq ft coverage is lower than competitors
- No app control or remote listed
- Only 2-year warranty included
Good fit if
- You need to purify two smaller rooms simultaneously
- You want a bundle deal for bedrooms
- You prefer quiet operation with auto-sensing
Skip if
- You need to clean a single large living room
- You require smart home app integration
- You want coverage over 1,500 sq ft
Verdict: PuroAir 240 2-Pack HEPA is a practical solution for covering two separate 1,000 sq ft spaces, such as bedrooms, though it lacks the high capacity of larger single units.
Sans Mini True HEPA Air Purifier
Best for: small bedrooms and quiet spaces
- Room Coverage
- Up to 490 sq ft
- Filter Type
- H13 True HEPA
- Noise Level
- 25 dB
- Operating Modes
- Auto-Mode, Lights-Out Mode
- Pre-Filter Type
- High-density
- Target Pollutant
- Odor, Smoke, Allergies, Dust
View on Amazon: Sans Mini True HEPA Air Purifier Affiliate link
The Sans Mini is a compact air purifier designed for rooms up to 490 square feet. It uses an H13 True HEPA filter and one pound of activated carbon to capture particles and odors. The unit operates at a quiet 25 dB and includes a 100% Lights-Out Mode for sleep. You get real-time air intelligence that adjusts fan speeds automatically. This model suits smaller spaces where low noise and simple operation are priorities.
Pros
- H13 True HEPA filtration captures 99.97% of particles down to 0.3 microns
- One pound of activated carbon absorbs smoke and odors
- Quiet 25 dB operation with 100% Lights-Out Mode
- Real-time air intelligence adjusts fan speeds automatically
Cons
- 490 sq ft coverage is smaller than competitors on this list
- Compact 8x14x9 inch build may feel small for larger rooms
- No smart app control mentioned in specifications
Good fit if
- You need quiet operation for a bedroom or nursery
- You have a small room under 500 square feet
- You want automatic air quality monitoring without manual adjustments
Skip if
- You need to purify a large room over 500 square feet
- You require smart app control for remote management
- You prefer a larger unit for faster air circulation in open spaces
Verdict: The Sans Mini HEPA Air Purifier is a quiet, compact option for small rooms. It fits buyers who prioritize low noise and automatic air quality adjustment over large coverage area.
Honeywell Allergen Plus 3-in-1 HEPA Purifier
Best for: Large rooms needing real-time air quality feedback
- Room Coverage
- Up to 1,928 sq ft
- Filter Type
- Certified HEPA
- Air Quality Sensor
- Sensor with color-coded display
- Operating Modes
- Sleep mode, Spin mode
- Pre-Filter Type
- Cleanable
- Room Type
- Bedroom
View on Amazon: Honeywell Allergen Plus 3-in-1 HEPA Purifier Affiliate link
This Honeywell unit covers up to 1,928 square feet with a certified HEPA filter. It features a cleanable pre-filter for dust and pet hair, plus a carbon filter for odors. A built-in air quality sensor adjusts performance based on real-time conditions. The Turbo360 fan distributes air evenly. It includes sleep mode and timer options for quiet, personalized use in large rooms.
Pros
- Covers rooms up to 1,928 sq. ft.
- Certified HEPA filter removes 99.97% of allergens
- Built-in air quality sensor with color-coded display
- Cleanable pre-filter reduces maintenance costs
- Turbo360 fan with spin mode for even airflow
Cons
- AHAM verified coverage is only 398 sq. ft.
- No smart app or Wi-Fi connectivity listed
- No remote control included in specifications
Good fit if
- You need coverage for large rooms up to 1,928 sq. ft.
- You want a cleanable pre-filter to extend HEPA life
- You prefer real-time air quality monitoring via color display
Skip if
- You require app control or remote operation
- You need verified coverage above 398 sq. ft.
- You want a unit smaller than 11.2 inches wide
Verdict: Honeywell Allergen Plus 3-in-1 HEPA Air Purifier suits buyers who prioritize large room coverage and real-time air quality feedback over smart connectivity features.
Medify Air Large Room H13 HEPA Purifier
Best for: large rooms needing smoke and allergen removal
- Room Coverage
- 2,640 sq ft
- Filter Type
- HEPA H13
- CADR
- 598
- Noise Level
- 22 dB - 59 dB
- Operating Modes
- Sleep mode
- Room Type
- Large Room
View on Amazon: Medify Air Large Room H13 HEPA Purifier Affiliate link
The Medify MA-50 handles large spaces up to 2,640 square feet in one hour. It uses a HEPA H13 filter to capture 99.9% of particles down to 0.1 microns. With a CADR of 598, it addresses smoke, odors, and pollen effectively. You can adjust four fan speeds, including a quiet 22 dB sleep mode. This unit is designed for bedrooms, offices, and open living areas where air quality matters.
Pros
- Covers up to 2,640 sq ft in one hour
- HEPA H13 filter captures 99.9% of particles down to 0.1 microns
- CADR rating of 598 for high airflow
- Sleep mode operates at a low 22 dB noise level
- Includes timer, child lock, and filter replacement indicator
Cons
- No app control or smart home integration listed
- Replacement filters last only 3-4 months
- No remote control mentioned in specifications
Good fit if
- You need to clean air in a large room or open plan space
- You want a unit specifically rated for wildfire smoke and odors
- You prefer a straightforward touch panel interface without smartphone dependency
Skip if
- You require smart app connectivity for remote monitoring
- You are looking for a compact unit for a small bedroom
- You want a filter that lasts longer than four months
Verdict: Medify MA-50 Large Room Air Purifier delivers high CADR performance for large spaces. It suits buyers prioritizing raw filtration power and smoke removal over smart features. You get serious cleaning capacity without needing to connect to an app.
Honeywell Extra Large HEPA Air Purifier
Best for: Large rooms needing automatic allergen and odor control
- Room Coverage
- 2423 ft²
- Filter Type
- HEPA
- Air Quality Sensor
- Air Quality Monitor
- Operating Modes
- Turbo, Auto
- Pre-Filter Type
- Carbon
- Target Pollutant
- Odor, Smoke, Pet Dander, Allergies, Dust, Pollen
View on Amazon: Honeywell Extra Large HEPA Air Purifier Affiliate link
This Honeywell unit targets large spaces up to 2,423 square feet. It uses a HEPA filter paired with a carbon pre-filter to capture dust, pollen, and pet dander while reducing odors. The device includes an air quality indicator and auto mode to adjust cleaning levels based on detected pollutants. It is a solid option for you if you need broad coverage for allergens and smoke in big rooms.
Pros
- Covers up to 2,423 square feet
- HEPA filter captures over 99.99% of particles
- Carbon pre-filter reduces odors and smoke
- Auto mode adjusts to air quality
Cons
- No smart app or Wi-Fi connectivity
- No remote control included
- Lacks a digital timer display
Good fit if
- You need coverage for rooms over 1,500 square feet
- You want automatic cleaning based on air quality
- You need odor reduction for pets or smoke
Skip if
- You require smart home integration or app control
- You prefer a compact unit for small bedrooms
- You need a remote control for easy access
Verdict: Honeywell HPA5300B Large Room Air Purifier suits you if you prioritize raw coverage area and automatic allergen removal over smart features. It delivers strong filtration for large spaces without the complexity of app connectivity.
Specifications side by side
| Spec | Alen BreatheSmart Large Room Air Purifier | Coway Smart HEPA Air Purifier | PuroAir HEPA Air Purifier 2-Pack | Sans Mini True HEPA Air Purifier | Honeywell Allergen Plus 3-in-1 HEPA Purifier | Medify Air Large Room H13 HEPA Purifier | Honeywell Extra Large HEPA Air Purifier |
|---|---|---|---|---|---|---|---|
| Room Coverage | 1,400 sq ft | 1,575 sq ft | 1,000 sq ft | Up to 490 sq ft | Up to 1,928 sq ft | 2,640 sq ft | 2423 ft² |
| Filter Type | H13 True HEPA | HEPA | HEPA | H13 True HEPA | Certified HEPA | HEPA H13 | HEPA |
| CADR | not stated | not stated | not stated | not stated | not stated | 598 | not stated |
| Noise Level | not stated | not stated | not stated | 25 dB | not stated | 22 dB - 59 dB | not stated |
| Air Quality Sensor | SmartSensor | not stated | PuroIQ particle sensor | not stated | Sensor with color-coded display | not stated | Air Quality Monitor |
| Smart Connectivity | App | Wi-Fi, Alexa, Google Home | not stated | not stated | not stated | not stated | not stated |
| Operating Modes | not stated | Auto Mode, Eco Mode | Auto-Mode, Sleep-Mode | Auto-Mode, Lights-Out Mode | Sleep mode, Spin mode | Sleep mode | Turbo, Auto |
| Pre-Filter Type | not stated | Washable | not stated | High-density | Cleanable | not stated | Carbon |
| Room Type | not stated | not stated | Bedroom | not stated | Bedroom | Large Room | not stated |
| Target Pollutant | Pet Dander, Allergies, Dust | Odor, Smoke, Allergies | Odor, Smoke, Allergies | Odor, Smoke, Allergies, Dust | not stated | Odor, Smoke, Pollen, Wildfire Smoke | Odor, Smoke, Pet Dander, Allergies, Dust, Pollen |
| Features | not stated | Auto Mode | Sleep Mode, Auto Mode | Auto Mode, UV-C Light | Air Quality Monitor, Sleep Mode | not stated | Air Quality Monitor, Auto Mode |
| Control Method | App Control | Wi-Fi, App Control, Alexa | not stated | not stated | not stated | not stated | not stated |
| Form Factor | not stated | not stated | not stated | Mini | not stated | not stated | not stated |
| Dimensions | 7.6 × 13 × 20.6 inches | 9.6 × 16.8 × 18.3 inches | 10.6 × 10.6 × 20.5 inches | 9 × 8 × 14 inches | 11.2 × 11.2 × 25.2 inches | 9.8 × 9.8 × 9.8 inches | 10.8 × 19.1 × 22.3 inches |
| Weight | 10 pounds | 12.3 pounds | 7.3 pounds | not stated | 13.3 pounds | 5.76 ounces | 20.5 pounds |
| Size | 35i - 1,400 Sq Ft | 16.8 x 18.3 x 9.8 | 2 Pack | Air Purifier Mini | Medium | Large Room 1-Pack | X-Large Rooms |
| Color | Essential | BLACK | Black | Midnight | Black | White | Black |
| Model | BreatheSmart 35i | AP-1519P | Puro Air 240 | Sans Air Purifier | HPA6000B | MA-50-V3.0 | HPA5300B |
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Frequently asked questions
Which Alen alternative offers the best smart home features?
The Coway Smart HEPA Air Purifier is the top choice for smart integration. It supports Wi-Fi, app control, and Alexa, allowing you to monitor and adjust settings remotely. This model targets medium-sized rooms and includes washable filters, which reduces long-term maintenance costs compared to single-use options.
What is the best option for covering multiple bedrooms?
The PuroAir HEPA Air Purifier 2-Pack is designed for this specific need. It provides two units to cover separate spaces, such as dual bedrooms, each handling up to 1,000 square feet. This setup is practical for users who need quiet, sleep-focused purification in multiple small rooms simultaneously.
Which unit is best for large rooms with smoke or allergens?
The Medify Air Large Room H13 HEPA Purifier is built for heavy-duty cleaning in large spaces. It targets smoke, pollen, and odors with high CADR performance. This model prioritizes raw filtration power over smart connectivity, making it ideal for users who want serious cleaning capacity without needing app features.
Is there a compact option for small bedrooms?
The Sans Mini True HEPA Air Purifier is a compact choice for small rooms. It focuses on low noise and automatic air quality adjustment. Its small footprint makes it suitable for bedrooms or quiet spaces where you prioritize a quiet operation over large coverage area or extensive smart features.
Which purifier provides real-time air quality feedback?
The Honeywell Allergen Plus 3-in-1 HEPA Purifier offers real-time air quality feedback. It is designed for large rooms and includes an air quality monitor. This feature allows you to see current air conditions, making it a strong option for users who value visual data over smart app connectivity.
What is the best choice for pet dander control?
The Honeywell Extra Large HEPA Air Purifier is optimized for pet dander and allergens. It features an air quality monitor and auto mode to adjust fan speed automatically. This unit covers up to 2,400 square feet, providing strong filtration for large spaces without the complexity of smart app connections.
Which alternative is the best overall quiet performer?
The Alen BreatheSmart Large Room Air Purifier remains the best overall choice for quiet operation. It uses an H13 HEPA filter to target allergies while maintaining sleep-friendly noise levels. This model is designed for users who value quiet, sleep-focused purification over maximum coverage area or advanced smart app features.