An expert guide to buy the best air purifier with permanent filter – No further cost to maintain

Last updated on: May 1, 2024.

Want the best air purifier with permanent filter? Read this before buying.

Air purifiers ensure fresh and clean indoor air, but they are an investment. Although the initial price may be worth considering, they can become too expensive to run over time.

Most air purifiers are fitted with HEPA and activated carbon filters, which require regular replacement. These can quickly become costly, and this is why having an air purifier with a washable, reusable permanent filter can be more cost-efficient as they save you money in the long run.

There are so many types of air purifiers in the market today, and many of them don’t use washable or reusable filters. They need regular replacement.

Such air purifying devices use filters that need to be replaced routines at least every 3-6 months to fulfill their function and maintain their effectiveness. So, owning a device that needs filter replacement takes a long-term, committed investment.

However, a few best air purifiers with permanent filters don’t cost anything to maintain. There is no further cost to maintain these devices, and that makes them a much more worthwhile investment. 

What is HEPA type permanent filter?

A permanent HEPA type filter is exactly what the name suggests. It is a permanent version of HEPA filter. It is just as effective as normal HEPA filters and can remove 99.97% of particles as small as 0.3 microns. The good thing about it is that there are no additional replacement costs.
While permanent HEPA filters will work forever, in theory, they do need cleaning, monthly or every three months. 

Why do you need an air purifier with permanent filter?

Air purifiers that use a permanent filter can run for a long time without increasing the overall cost.
✔ Saving money: While the price of an air purifier may be affordable, frequent replacement ranging between every three months and every 12 months can become costly. Replacement filters are also usually expensive.

✔ Removing common pollutants: Reusable filters are either washable HEPA filters or iFD filters. These differ in effectiveness by 0.2 percent, and both of these can capture almost all pollutants such as dust, mold spores, and pollen.

✔ Cleaning when needed: Washable filters can be cleaned whenever necessary. A periodic check on the filters will suffice. The more regularly you clean it, the more efficiently it will function.

✔ Easy maintenance: Cleaning the filters is easily done. They can be either vacuumed or rinsed.

Which is the best air purifier with permanent filter in 2021?

An air purifier with a washable filter is best, i.e., if you don’t want to change the filter and spend extra money to purchase a new one.

It’s always wise to invest in an air purifier with a permanent filter. It is reusable and can be affordable in the long run. You will not have to replace the filter every few months.  Winix 5500-2 Air Purifier with Washable AOC Carbon Filter is our top pick.

How we selected the best air purifier for this article?

Selecting the best air purifier can be a daunting task as there are quite a few models with washable and permanent filters. Naturally, you would want to buy one that is easy to maintain and costs little to nothing on its upkeep. 

Below, is a list of reviewed air purifiers with reusable filters and their pros and cons.

6 Best Air Purifiers With Permanent Filters (May 2024)

To help you make the right choice of air purifier with permanent filters, we have reviewed some of the best air purifiers available and highlighted the important aspects of these top performing products.

Image PRODUCT/ Features Rating  
Our Top PickBlueair Airpurifier Blueair Blue Pure 211+ Auto Large Area Air Purifier✦ Automatically adjusts to real-time conditions
✦ Reliable For Years
✦ Hepa Silent Technology
Runner UpLevoit Airpurifier LEVOIT Air Purifiers for Home Large Room✦ Medical Grade Air Purifiers
✦ Works great for allergies and asthma
✦ Voice Command Enabled
Budget PickWinix Airpurifier (1) Winix 5500-2 Air Purifier with True HEPA✦ Washable Carbon Filter
✦ PlasmaWave Technology
✦ Air Quality Indicator

Budget PickMedify AirPurifier with H13 Filter Medify MA-25 Air Purifier with H13 True HEPA Filter✦ Powerful
✦ Easy To Clean
✦ Low Noise

Budget PickPure Enrichment Purezone Pure Enrichment PureZone Elite True HEPA Large Room Air Purifier✦ 4 Stage Air Purification
✦ Energy Efficient
✦ Smart Air Quality Monitor
Budget PickHathaspace Air Purifier (1) HATHASPACE Smart True HEPA Air Purifier for Home✦ Auto Mode
✦ Speed Control
✦ Real Time Air Quality Monitoring

Budget PickColzer Wifi Air Purifier COLZER 3500 Sq Ft WiFi Smart Air Purifiers✦ WiFi Control Air Cleaner
✦ Dual Large Air Intakes
✦ Wide Coverage

1. Blueair Blue Pure 211+ Auto Large Area Air Purifier

Blueair Blue Pure 211+ Auto Large Area Air Purifier is recommended for large rooms and comes AHAM-verified and with a CADR of Smoke 353, Pollen 380, Dust 347, and it removes 99% of fine particles from the air. It completely filters the air in large living rooms, family rooms & playrooms about every 12.5 minutes¹ (4.8x an hour at 550 square feet)² on high settings.

It has an intuitive auto mode that automatically adjusts to real-time conditions reported by the particle sensor to maintain a comfortable indoor environment.

The Blueair Blue Pure 211+ Auto Large Area Air Purifier uses HEPASilent technology to deliver cleaner air with less energy and noise and has activated carbon that traps light odors. It is a device that quietly cleans the air with less noise than a whisper, as low as 23dB and a maximum of 56 dB. It uses less energy than a light bulb of 4-38 W on all speed settings. 

Blueair air purifier with filter

Things we liked:

1. 3-stage filtration
2. 46 sq. ft large pleated fibrous particle filter
3. High airflow rate
4. Multicolored fabric in pre-filter operation
5. Minimalist design with one button
6. Low in energy consumption
7. Energy Star certified
8. Quiet operation
9. CARB approved, and AHAM verified

Things we didn’t like:

1. None.

2. Levoit Air Purifier

The Levoit air purifier has a powerful VortexAir 3.0 technology that increases air circulation and provides a CADR of 260 CFM, changing the air in a 403 sq ft room 5x per hour. This unit can be located anywhere in the room with its large 360° air intake. It has a high-efficiency filtration that eases all allergy symptoms that are caused by airborne particles.

The H13 True HEPA Filter works with the Pre-Filter and High-Efficiency Activated Carbon Filter to capture 99.97% of air pollutants 0.3 microns in size, such as dust, smoke, pollen. It also filters out unpleasant odors.

The Levoit air purifier comes with a sensitive auto mode using an AirSight Plus technology to scan the air around for airborne particles that are as small as 0.3um, helping Auto Mode function with accuracy to maintain healthy air quality. It is quiet with rubber pads that absorb sounds made by the fan’s vibrations and provides noise levels of as low as 24dB.

It is energy-efficient, operating at 38W at the highest fan speed setting, and consumes as little as 1kWh of electricity. You can monitor the unit and the air quality from anywhere with the free VeSync app. It has easy-to-use voice commands and can be connected to third-party voice assistants such as Alexa or Google Assistant. The Core 400S is Energy Star certified.

Levoit Air Purifier For Home

Things we liked:

1. 3-in-1 filtration with True HEPA filters
2. Granular activated carbon filter
3. 100% ozone-free
4. Compact design
5. Moderate CADR
6. Low maintenance costs
7. Energy Star certified

Things we didn’t like:

1. Pre-filters are not washable
2. Not efficient in odor removal

3. Winix 5500-2 Air Purifier with True HEPA

 The True HEPA filter catches 99.97% of all airborne particles, including pet dander, dust mites, pollen, mold spores, microbes, and other allergens. It has a washable fine mesh pre-filter that traps the larger particles. This pre-filter helps in increasing the lifespan of the True HEPA filter.
The Winix 5500-2 model has a washable AOC (advanced odor control) carbon filter made from activated carbon granulars to eliminate household odors from cooking, smoking, pets, etc.
The PlasmaWave air cleaning technology safely breaks down odor, allergens, chemical vapors, and all other harmful air pollutants. 

Moreover, this model comes with Smart Sensors that gauge the air, and the auto mode can adjust the fan speed as necessary; with a sleep mode for silent nighttime operation.

Winix Air Purifier With True Hepa

Things we liked:

1. The Winix 5500-2 has a 4-level filtration system.
2. Permanent and washable pre-filter, True HEPA particle filter
3. A washable activated carbon filter
4. In-built odor sensor that detects pollution
5. Auto-activated sleep mode based on room’s lighting
6. AHAM-verified CADR, CARB approved for ozone safety

Things we didn’t like:

1. PlasmaWave technology produces some amount of ozone
2. No backlight on the remote control
3. It comes in only one color

3. Medify MA-25 Air Purifier with H13 True HEPA Filter

The Medify Air Purifier with True HEPA filter offers maximum coverage up to 1000 sq. ft. in an hour and 500 sq. ft. in 30 minutes. It is suitable for both homes and office spaces. It has HEPA H13 filtration and can remove 99.97% of airborne particles, including odors, pet dander, dust, etc. It captures particles of 0.3 microns.

The Medify Air Purifier is a quiet device and has three fan speeds, with the lowest setting virtually silent. It runs at 100 Volts at a minimum noise level of 35dB and a maximum of 51dB. It also allows for sleep mode by dining the lights in the display panel.

The features are easy to use with a sleek touch screen panel and a timer, different fan speeds, sleep mode, filter replacement indicator, and has a child and pet lock feature. The Medify air purifier is Energy Star certified and CARB, ETL verified.

Medfy Air Purifier with H13

Things we liked:

1. Medify Air Purifier with HEPA filter has a modern design with touch control panel
2. H13 HEPA filter for longer lifespan of filters
3. 3-in-1 combined filter pack
4. Honeycomb-shaped pelletized activated carbon filter to remove unpleasant odors
5. Moderate CADR
6. Sleep mode, 3 manual fan speeds, child and pet lock feature
7. East to use and move between rooms
8. Energy Star certified
9. Lifetime warranty

Things we didn’t like:

1. Noisier, even on the lowest fan speed
2. Not very effective on strong odors
3. It doesn’t have a dedicated washable filter

4. Pure Enrichment PureZone Elite

The PureZone Elite air purifier has a 4-stage air filtration technology that can trap and destroy 99.97% of airborne particles. It can safely clean and sanitize the air, trapping dust and pollen and helping allergies while also inactivating and transforming viruses, bacteria, germs, and fungi.

PureZone Elite is complete with a filter reset indicator to let you know when it’s time to replace the filter. The pre-installed filter includes an activated carbon pre-filter and a medical-grade true HEPA filter that lasts up to 6 months.

The optional timer helps in preserving the longevity of the filters with preset run times. It filters air efficiently in large rooms or offices up to 190 sq ft with a clean air delivery rate (CADR) of 120 CFM. It has an easy-lift handle that makes it easy to move from room to room. It can also destroy dust, cigarette smoke, pollen, pet dander, and other airborne irritants.

Pure Enrichment Main

Things we liked:

1. 4-stage filtration system
2. Medical-grade HEPA filters
3. Convenient tower design
4. Smart Sensors
5. It has a filter reset indicator
6. 5-year warranty

Things we didn’t like:

1. It can be loud on high-speed settings
2. Low CADR rating
3. Not effective for odor removal

5. Hathaspace Smart True HEPA Air Purifier

The Hathaspace Smart True HEPA air purifier has H13 HEPA filters that remove 99.97% of air particles. It has a 5-in-1 filter system that captures pollen, dust, pet dander, VOCs, tobacco smoke and reduces odors, etc. It also has a smart particle sensor that monitors the air quality, detects pollutants in the air, adjusting the fan speed in real-time. It has a digital display on the unit that reveals the air quality level. It is CARB-certified to meet ozone standards.

Hathaspace airpurifier

Things we liked:

1. H13 HEPA as the core particle filter
2. A thick layer of pelletized activated carbon filter with zeolite
3. Permanent and washable pre-filter
4. Effective for odor control for zeolite, large room coverage
5. Modern design with easy control from the touch panel
6. Built-in laser particle sensor, colored and numeric AQI display
7. 100% ozone-free, CARB approved, Energy Star certified

Things we didn’t like:

1. Not app or Wi-Fi-enabled
2. The CADR is not AHAM verified

5. COLZER 3500 Sq Ft WiFi Smart Air Purifier

The Colzer 3500 Sq Ft WiFi Smart Air Purifier has a CADR of 470 CFM (800 CMH) and dual large air intake with a HEPA filter to improve air quality indoors of up to 3,500 sq ft in an hour, 2,000 sq ft in just 30 minutes, and 800 sq ft only in under 15 minutes.

The Colzer 3500 has a Dual 3-Stage Air Purification System with a washable pre-filter that can capture hair, fur, and dust mites to improve the life of the Composite filter. The activated carbon filter captures harmful gases and unpleasant odors.

The True H13 HEPA filter captures 99.99% of 0.3 μm ultra-fine dust, like smoke and fumes. It has WiFi Control that you can use to monitor and control the air quality from anywhere with the SmartLife App. With a touch, you can turn this air purifier on or off, check the air quality, and control the functions, like modes, fan speeds, timer, and child lock.

The smart particle sensor monitors your air quality, and the large front LED tells you precise EPA Air Quality Index score, temperature, and humidity readout in real-time, while the light bar changes color depending on your air quality. You can choose the auto mode for true set-it-and-forget-it air cleaning. This HEPA home air purifier is FCC, CARB certified and ETL listed. 

Colzer Smart Air Purifier

Things we liked:

1. Captures smoke like a pro
2. Three Stage Filtration
3. Air quality Index Display

Things we didn’t like:

1. Sometimes the app doesn’t work

Our Verdict

With an eye to helping you make the right choice in air purifiers, we have reviewed several units in the market, and our verdict is the Blueair Blue Pure 211+ Auto Large Area Air Purifier with Auto mode for allergies, pollen, dust smoke, pet dander with HEPASilent technology and washable pre-filter. It is the best value for money and has all the features you need. It comes with a 4-level filtration system, permanent and washable pre-filter, True HEPA filter, in-built odor sensor that detects pollution, has an auto mode, and has an AHAM-verified CADR.

Best Air with Permanent Filter Buying Guide [Important Things To Keep In Mind Before You Buy]

Ai purifier with permanent filter

Before buying air purifiers for your rooms, there are a few factors to keep in mind. A few decades ago, air purifiers were considered almost a luxury when you already had an HVAC unit installed. You had ways of keeping the air cool or warm depending on the weather conditions.

You could also include a humidifier to maintain the relative humidity balance indoors. Humidifiers could keep the air as moist as it is healthy because some regions contain very dry air. And, you could also install dehumidifiers that could remove excess moisture from the air. Both of these serve a function, and that is to keep the right levels of humidity.

However, with the high levels of air pollution these days, caused by climate change and the vast number of vehicles, the viruses and bacteria floating in the air, the energy drawn from fossil fuels, there is serious concern about how harmful these air contaminants can be. Even those that start out with a healthy pair of lungs can feel the impact of air pollution.

Therefore, it is essential to understand relevant factors before investing in a unit that can save your health in the long term because you would want the air purifier to fulfil its entire purpose.

1. Technology:

Air purifiers contain a pre-filter and several layers of other filters, some of which need to be changed periodically. The technology behind the filters is key to providing optimum protection from air pollutants.

Newer air purifiers come with patented technologies that use sensors to register the level of pollution, capture the most microscopic pollutants, and recirculate purified air.

2. Room size:

Measuring the room is essential if you want to buy an air purifier that will work well for the room. Air purifiers come in different sizes and vary in price based on the technology and the coverage area. The right air purifier would depend on the room’s square footage.

Ideally, the right unit should be able to purify the air and exceed the room’s size.

3. ACH (air change per hour): 

Paying attention to the air change per hour will help, i.e., the number of times the air purifier can clean the total volume of air in the room within the hour. Usually, air purifiers with more than 4 ACH are considered more effective in removing microscopic particles from the air. 

4. Type of filter:

Air purifiers have pre-filters and more layers of filters that may need to regular replacement. 
The air goes through the pre-filter when it is operational, which captures the large particles, pet dander, and pet hair before the air moves through other filters. 99.97% of the pollutants get trapped or prevented from entering the room. 

5. CADR:

The CADR is an important consideration as it measures the volume of air that can be cleaned at its maximum speed setting. You would do well to choose an air purifier that has a higher CADR because it can purify air at a faster rate. 

6. Noise levels:

You would want to have air purifiers that are quiet. It makes sense to buy an air purifier with a low decibel level to purify the air in your home or office. So, look for one that has a noise rating of less than 50 dB. 

Additional features in the more recent models include the WiFi-enabled air purifier and sensors to gauge air quality and indicators to give you real-time updates on indoor air quality.

FAQ Section

1. What is the most common type of air filter?

There are a few different types of air filters in the market – HEPA filters, pleated air filters, and fiberglass air filters. Of these, fiberglass air filters are most common as they are disposable and more affordable.

However, they are not as effective in decontaminating the air. The HEPA filters are most efficient as they can remove up to 99.9% of airborne particles.

2. How long does a permanent HEPA filter last?

A permanent HEPA filter can last as long as 8-10 years. Over time, its efficiency may become low due to wear and tear. You can still extend its life by cleaning the permanent HEPA filter regularly. 

3. Is a Washable Filter the Same as a Permanent Filter?

A washable filter is one you can wash with water and soap to remove the contaminants trapped in them. They can be either HEPA filters or ifD filters. The permanent filter, on the other hand, do not require cleaning. They must not be exposed to water as it may ruin the filter. At best, you can use a vacuum cleaner to suck away the pollutants.

4. How often to change air filter in apartment?

It depends on the air filter model, indoor air quality, room size, and the air pollution levels around your apartment. 

5. Hepa air filter vs merv?

HEPA (High-Efficiency Particulate Air) is a type of mechanical air filter. HEPA filters are considered the best because they can trap airborne contaminants as small as 0.3 microns. 
MERV (Minimum Efficiency Reporting Value). The MERV rating on air filters indicates its efficiency in reducing the level of air particles. A higher “MERV” means a higher filter efficiency. The MERV efficiency scale ranges from 1 to 16, with one the lowest and 16 the highest efficiency rate. 

Final Words:

It is important to take all measures to ensure clean indoor air. Air purifiers with advanced technology and True HEPA filters help improve the air quality in our homes and offices. The best of them are also energy-efficient and cost-effective when they come with permanent filters. You save on the costs of frequent filter replacements.

Permanent filters last long and are easy to clean and maintain. Whatever the size of your home or its location, an air purifier with permanent filters can ward off allergy triggers such as dust, dust mites, mold, and other allergens, ensuring fresh and clean air 24/7.


About The Author

Olivia — a self-confessed air quality addict — is a home climate enthusiast, fresh air advocate, and someone with deep personal experience and knowledge about mold extermination. Her work was mentioned in countless notable humidity publications. Previously she was an editor at Mold Remediation.