Best Air Purifier for Weed Smoke 2022: Reviews & Buying Guide

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Shopping for an air purifier to eliminate weed smoke from your room’s air? 

Then take a look at our top picks below.

Smoking weed has many medical benefits, but no one can deny the awful smell it leaves behind.

There are several ways to minimize or mask the smell of cannabis

But if you really want to get rid of it quickly, then you will need a good air purifier that can filter-out the complex mix of particulates and chemicals that make up weed smoke.

Units that can effectively remove the stank of cannabis smoke do an especially good job filtering-out odor-causing particles and chemicals from the air to provide clean and fresher air for you to breathe in.

In this guide we recommend and review some of the best air purifiers for eliminating weed smoke from your home, and we provide guidance on how to find the right one for your needs.

Do You Really Need an Air Purifier for Weed Smoke?

While smoking marijuana is relaxing, the smell it leaves behind can make guests and family members uncomfortable.

We recommend purchasing an air purifier for weed smoke if you have any of the following issues in your life:

Complaining Neighbors

Whether you are smoking tobacco or marijuana, the smell lingers for a long time. It is more problematic with weed because cannabis is still prohibited in many places, so your neighbors may not find it appropriate.

Other Methods Aren't Working

Burning incense sticks is a popular method of masking weed odor. 

But it really doesn’t work that well, especially if the weed is really sticky with THC.

Non-Smokers In Your Home

Smoking weed is still illegal in most public, which drives use inside.  

Unfortunately, for many people that means smoking near other people they live with.

The situation worsens when odor molecules stick to your clothing; upholstery, hair, and surfaces and make the whole place reek of weed. 

An air purifier for weed smoke can help in such cases.

Our Top 3 Picks

What’s in This Buying Guide

Table of Contents

This buying guide recommends, reviews, and compares the best air purifiers for weed smoke (in our opinion). We’ve selected only high-quality and reliable units for our short list. 

A short review of each model follows our list of top picks. After that, we provide a buying guide that discusses the factors and features you should consider when buying an air filter or air purifier for weed smoke. 

Finally, we answer a few commonly-asked questions about air purifiers that can effectively eliminate weed smoke from a room.

So let’s get started!

Best Air Purifiers for Weed Smoke

Disclaimer: All links below go to

air purifier for smoking weed
  • Alen BreatheSmart 75i

  • Best for Large Rooms & Apartments

  • Up to 1300 sqft

  • 12x19x27 inches

  • 35 lbs

  • True HEPA Filter

  • Filter life: 9-12 mos

  • 36W

  • Lifetime warranty

best cigarette smoke air purifier
  • Rabbit Air BioGS 2.0

  • Best for Medium Rooms

  • Up to 550 sqft

  • 16.6×9.8×22.2 inches

  • 16.8 lbs

  • 4 STAGES:
    (2)BioGS HEPA Filter
    (3)Activated Carbon Filter
    (4)Negative Ion Generator

  • Filter life: 3 yrs

  • 5W to 29W

  • 5 year warranty

air purifier for smoking weed
  • Blueair Blue Pure 411

  • Best for Small Rooms

  • Up to 161 sqft

  • 8x8x16.7 inches

  • 3.3 lbs

  • 3 STAGES:
    (1)Washable Pre-Filter
    (2)HEPA Filter
    (3)Carbon Filter

  • Filter life: 6-8 mos

  • up to 10W

  • 1 year warranty


Best for Large Spaces

The 75i is Alen’s flagship model that showcases their technical expertise. The true HEPA air filter and powerful fan in this unit will quietly rid a 1,300 sqft apartment of smoke in about 30 minutes. It also comes with a lifetime warranty for peace of mind. 




Our Review

Alen BreatheSmart 75i is one of the best air purifier models in their range. 

It features an air pollution sensor to guide its work and a powerful fan plus filter system that can remove even the finest particulates from a large open-plan room or even a modest apartment (leave the doors open tho).

One selling point of the Alen 75i is its sleek design and choice of eight different colors and finishes so you don’t have to hide it from your guests.

Looks aside, this unit is also one of the most powerful air purifiers for weed smoke today.

Although it only features a single combination filter, it is a True HEPA filter that is highly effective against the smallest of smoke particles.

Compared with a traditional HEPA filter, the true HEPA filter in the 75i also lasts longer so you don’t have to worry about their replacements as often.

Given the price, you will naturally worry about it malfunctioning. So it’s great that Alen provides a lifetime warranty (on defects). 

Editor's Rating


Best for Medium Spaces

Rabbit Air specializes in air purifiers that feature advanced technologies and patented special filters. The filters in the Rabbit Air BioGS 2.0 are also patented, and the unit is certified for odor and fine particulate removal.




Our Review

The Rabbit Air BioGS 2.0 caught our attention for two reasons.

  1. Best-in-class odor-eliminating performance can handle pungent weed smoke.
  2. A clean, minimalist design that looks great in any room.

The BioGS 2.0 uses an advanced 4-stage filtration system consisting of a permanent pre-filter, BioGS HEPA Filter, a large charcoal-based activated carbon filter, and an ion generator.

While the entire system is great at capturing all sorts of air pollutants, the thick and heavier carbon filter effectively absorbs bad smells and lasts longer.

Another noteworthy point is the level of customer support backing it up.

Rabbit Air strongly stands by all its products. This model comes with a five-year warranty and 24/7 technical support to help you if you run into any problems with it.

Editor's Rating


Best for Small Spaces

Ideal for eliminating odors from small to medium sized rooms, this Blueair purifier is exceptionally great at removing weed smoke. Even inside a compact body, it has some of Blueair’s signature features found in their bigger options, including one of their most advanced filtration systems.




Our Review

The Blueair Blue Pure 411 is a great choice for removing cannabis smells and smoke from any bedroom or similar-sized room. 

The Pure 411 boasts an advanced three-stage filtration system that ensures cleaner and much fresher air. This machine is very powerful and effective for it’s size.

Want proof?

The entire bottom of the unit is dedicated to the filtration system, making sure that the unit performs optimally.

The tube-like shape has its exit vent on top and airflow grills all around the exterior. This means it can suck air in from all sides, process it, and blow clean air from the top.  This is the best airflow design we’ve seen in a single-room unit.

With a 161 sq. ft coverage, it can exchange and filter the air in a bedroom or den five times per hour without being a burden on your budget.  An Energy Star Certified model, it only draws about 10W.

Editor's Rating

Air Purifiers for Weed Smoke: Buying Guide

air purifier for smokers

How do Air Purifiers Remove Weed Smoke?

Weed smoke is a collection of tiny unburnt particles varying in size from 2.5 to 0.03 microns that include particles of carbon and minute droplets of tar.

When you smoke weed, these particles are introduced into the air and leaves behind an unpleasant smell.

Not all air filters can remove particles that small.

That’s why air purifiers for weed smoke should contain a HEPA or True HEPA Filter that can capture particles smaller than 0.3 microns. 

In addition, air purifiers that feature an activated carbon filter can make a real difference in controlling odors. Carbon air filters contain a thick layer of activated carbon that attracts and binds with volatile organic chemicals (VOCs) and other odorous molecules to eliminate their smelly effect.

When contaminated air passes through the advanced multi-step filtration system of an air purifier, it leaves behind most of the contaminants and odor-causing molecules. 

The smell gradually lessens until it is completely removed.

What to Look for in an Air Purifier for Weed Smoke

air purifier for smokers

A simple search for an air purifier will yield hundreds of models to choose from. 

To buy the best most suitable air purifier for removing weed from your room’s air, consider the following factors and features:

Filter Life

Choosing a model with a long filter life is important because weed smoke contains a lot of particulate matter. Since almost all of it is going to end up on the filter of your air purifier, you should look into getting a unit whose filter has a long life.

A filter with a smaller capacity might end up getting clogged quickly, so you will have to replace it very often. However, a filter with a larger capacity will collect more particles and won’t need replacement as often.

Portability and Ease-of-Use

Portability is important for air purifiers for weed smoke. Such purifiers come in a variety of shapes and sizes.

And since you won’t be smoking in any one part of your house, it’s best to get a highly portable model so you can place it wherever you smoke. Look for features like handles and casters to learn how portable a device is.

Ease of operation is also an important consideration. Trust us, you won’t want to mess with a difficult machine when you are craving a smoke. An easy-to-use machine will truly help you in this regard.

Filtration Effectiveness

The filtration system of an air purifier determines its effectiveness. Most models use different types of filters including pre-filters, HEPA filters, and activated carbon filters. 

The best air purifier models for removing weed use an advanced, multi-stage filtration system with at least a HEPA filter to remove smoke particles and (preferably) a carbon filter to minimize odor.

Generally speaking, the more filters an air purifier has, the more effective it will be on weed smoke.

Build and Durability

Most people at least partly judge quality based on price – the higher the price, the better the quality.

However, in the air purifier space you will come across lots of costly products that cannot eliminate weed smoke and budget units that can. 

Therefore, don’t let the price cloud your judgment in this category. Inspect the specifications carefully and pick the one with the right filters and room size that fits your budget best.

Noise Level

best air purifier for weed smoke

The noisiest component of any air purifier is its fan. 

Fortunately, most air purifiers today are pretty quiet. 

That said, you’ll want to buy a unit that emits less than 50-55 decibels if you want to sleep with it in your bedroom. 

Coverage Area

The coverage area of an air purifier is the maximum size of room it can filter effectively.

Every air purifier sold in the US is required by law to display its coverage area in square feet. 

So, before you set out to buy one for yourself, measure the square footage of the space you want to keep smoke-free. This will give you a rough idea of what size air purifier to look for.

Also, note that it is always better to choose a model with a higher coverage area than what you need. This way, you won’t have to worry about it losing its effectiveness if you move it to another room.  Never buy one too small, because it just won’t do the job.

Power Consumption

If your electricity bills are high, then consider the wattage of the air purifier you want to purchase. The more energy the device uses, the higher your energy bill will be.

And if you will be using it a lot, then we strongly suggest you invest in an Energy Star-rated model.


Because they are certified to consume significantly less energy than their non-Energy Star-rated counterparts.


air purifier for smoking weed

Investing in an air purifier seems like a smart way to remove weed smoke from your home. 

However, there are limitations to using an air purifier for this task, including:

Only a True HEPA Filter can Eliminate Weed Smoke

Weed smoke consists of tiny particulate matter ranging from 2.5 down to to 0.3 microns. Not all filters can remove such small particles.

Only a true HEPA filter can capture particles smaller than 0.3 microns, so it is the only type of filter completely effective for eliminating weed smoke.

That said, if your budget doesn’t allow for a true HEPA filter, then buying a HEPA filter can still make a huge difference with weed smoke.

Powerful Air Purifiers Are Often Noisy

best air purifiers for smoke

Air purifiers consist of many components that work together to do their job. 

In general, the more filters and mechanical components you add, the greater the noise it will emit.

And the more powerful the fan and the higher the room capacity, the more noise it makes. 

Because you are dealing with stubborn weed smoke, you will need a powerful model – and this means things can get noisy.

The units above are all perfectly acceptable when it comes to noise, however.

Higher Maintenance and Operating Costs

Fortunately, the three modern units we recommend in this guide are energy-efficient and don’t consume much energy.

But they do have higher maintenance costs than less expensive models. 

Both the HEPA filter and carbon filter will need to be replaced and the replacement cost is noticeable.

Cleaning and Maintenance

best cigarette smoke air purifier

Cleaning and maintaining an air purifier is essential to keep it functioning well in the long run. 

Here are some helpful tips to be aware of before you invest in one for weed smoke:

Keep The Surroundings Clean

Dirt particles and other debris sitting around the air purifier put an unnecessary burden on the machine.   Keep the space around your air purifier open, and keep it away from walls.

Check Grills and Panels for Dust

Dust building up on the exterior grills and panes of the device can significantly reduce the airflow to the device. 

You can easily remove it by either vacuuming the grill or cleaning it with a dust cloth. Just make sure to unplug the device before cleaning.

Replace Air Filters On Schedule

air purifier for weed

A clogged unit will prevent your device from working at its full potential. 

Some air purifiers have a “filter full” indicator to tell you when it is time to clean or replace the filter. You should promptly do it because it increases the lifespan of the machine.

If your device does not have one, you should follow the filter replacement schedule that the manufacturer suggests.

Clean Washable Filters Regularly

Washable filters are cost-effective because they save you from replacement costs. You should wash them regularly to extend their life. Whenever you wash them, be sure to dry them completely before putting them back.

Consider Placement

The best way to operate your air purifier for weed smoke is to use it in a room with closed doors and windows. Doing so not only ensures that smoke is not introduced into the house, but also stops clean air from escaping.

This way, your device won’t have to overwork itself and do what it is designed for optimally – weed smoke removal.

Frequently Asked Questions

How long does it take for an air purifier to remove weed smoke from a room?

It does not take long for the right air purifier to remove weed smoke from a room. Most units will exchange all of the air in a room a few times every hour. You can learn about the speed of air exchange by looking at the “air change” rating of the device. The higher the air change rate, the less time it takes to eliminate the weed smoke.

Are HEPA filters effective at removing weed smoke?

Weed smoke consists of particles ranging between 0.03 and 2.5 microns. HEPA filters can remove 99.97% particles of up to 0.3 microns from the air. This means they can effectively remove most particles in weed smoke. 

Are car air purifiers effective at cleaning the air for chain smokers?

Unfortunately, most car air purifiers are not at all effective at ridding your car of weed smoke. 

The key technologies you need to do this are a HEPA filter and a carbon filter; but most auto manufacturers do not incorporate these into their HVAC systems.

Final Verdict: What is the Best Air Purifier for Weed Smoke and Why?

We believe the Blueair Blue Pure 411 is the best air purifier for weed smoke for most people, although the Alen BreatheSmart 75i stands out as the best choice for full apartments and large open-plan rooms.   

We also like the Rabbit Air BioGS 2.0 for its advanced cleaning technology and remote control, but it’s not cheap.