The Best Ozone Generators of 2022

Take your odor-fighting abilities to the next level with one of the top ozone generators on the market.

By Tony Carrick | Updated Mar 1, 2022 4:37 PM

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Best Ozone Generator

Photo: amazon.com

When standard household cleaners won’t improve air quality, it’s time to bring in the big guns with the power of an ozone generator. Ozone attacks bad odors like cigarette smoke and pet smells at the molecular level, adding an extra oxygen atom to the odor molecule, changing its composition, and eliminating the odor.

These powerful devices kill harmful bacteria and viruses making them a high-tech cleaning solution for homes, offices, and commercial settings. Read on to learn about features you should consider when shopping for the best ozone generator, and discover some of the top options available.

  1. BEST OVERALL: Enerzen Commercial Ozone Generator 11,000 mg
  2. BEST BUDGET: Ivation Portable Ozone Generator 600mg/h 
  3. BEST FOR ALLERGIES: Green Air Classic Air Purifier Ozone Generator
  4. BEST FOR ODORS: OdorStop OS1500 – Ozone Air Purifier
  5. BEST FOR SMALL SPACES: OdorStop OS900/6G Professional Grade Ozone Generator
  6. BEST FOR LARGE SPACES: Airthereal MA10K-PRODIGI Ozone Generator 10,000 mg/hr
  7. BEST FOR COMMERCIAL USE: Enerzen O-888 Ozone Generator 20,000 mg
  8. BEST FOR CAR: Alpine Air Commercial Ozone Generator – 6,000 mg/h
  9. BEST PORTABLE: VIVOSUN Ozone Generator
The Best Ozone Generator Option

Photo: amazon.com

Types of Ozone Generators

Not all ozone generators are right for all uses. Some rely on ultraviolet energy to generate ozone, while others rely on plasma or oxygen molecules. Some are even used for treating water. While each of the options is effective at creating ozone, one type may be better than others for your intended use.

Ultraviolet

Ultraviolet ozone generators are the least expensive, and least efficient, type. Ultraviolet ozone generators produce ozone by splitting oxygen molecules with UV light. These units take comparatively more time and power to create a relatively small amount of ozone. This makes them unsuitable for larger spaces, but good options for small offices, bedrooms, and hotel rooms.

Corona Discharge

Despite their unfortunate name, corona discharge ozone generators are quite powerful. They operate in much the same way as lightning, which splits oxygen molecules with an electric current to create ozone. A corona discharge generator works by creating an electric field on a surface that splits the oxygen molecules in the room into single atoms, which instantly recombine to produce ozone gas.

A corona discharge ozone generator is potent and efficient, making it ideal for large environments. The downside is  that it creates a significant amount of heat because it requires a lot of energy to create a powerful electric current.

Cold Plasma

Whereas corona discharge uses an electrical current and ultraviolet uses UV rays, this type of ozone generator splits oxygen atoms using cold plasma created from two neon tubes that are adjacent to each other in a sealed chamber. An electrode electrifies the chamber, creating an electric field between the two tubes.

Like a corona discharge generator, this electric field splits the oxygen atoms, which recombine to create ozone gas. Unlike corona discharge generators, cold plasma generators create very little heat but produce about the same amount of ozone gas. However, these units are bulky and significantly more expensive than other ozone generators.

Electrolytic

This type of ozone generator is used for water treatment. Water pumps into the ozone generator, which splits the oxygen molecules in water to create ozone. Unlike chemical treatments, which remain in the water, ozone water treatment dissipates into oxygen, leaving no harmful residue.

What to Consider When Choosing the Best Ozone Generator

Before you go shopping for air fresheners for the car, bedroom, and/or living room, the right ozone generator can help the air quality of your home or office. It’s important to understand ozone control and how to operate these machines safely. Read on to learn about the size, output, and features of ozone generators.

Size and Weight

Except for large ozone generators that are used in industrial settings, ozone generators are generally relatively small. Most weigh less than 7 pounds (some weigh as little as 7 ounces) and range in size from wallet-size to about the size of a toaster.

Their compact size allows them to fit discreetly in most rooms and even function in smaller spaces such as car interiors. Ozone generators’ small profile means they’re also portable and are easily moved from room to room. Some people travel with them, too; they come in handy if you’re on a business trip and end up in a foul-smelling hotel suite.

Ozone Output

Ozone output is measured in milligrams per hour (mg/hr). The higher the output, the larger the space the generator can treat. A quality ozone generator will produce at least 350 mg of ozone per hour, with some industrial-size ozone generators pumping out as much as 12,000 mg/hr.

Lower-output generators are suitable for offices, individual rooms, and other smaller spaces. Commercial settings, such as hotel lobbies, require much larger generators to be effective. You can also use larger-output generators for a short time in a smaller space to “shock” the area, sanitizing an entire room in less than an hour.

Features

Most ozone generators have a host of features that make operating them safer and easier. An ozone generator should have an output control and a fan that distributes the ozone gas throughout your space.

It should also have a timer that enables you to control when the generator turns on and off. Some units have remote controls that allow the user to operate the generator from afar. Multifunction ozone generators have filters for removing dust and allergens from the air.

Portability

Portable ozone generators are convenient for home or travel. These small units weigh as little as 7 ounces, with some not much bigger than a smartphone. They are compact, feature ergonomic handles, and can be plugged into standard 115-volt outlets. Portable generators are easily moved around to different rooms in your home or can be used in hotel rooms.

Safety

Like many appliances, ozone generators can present serious health risks if they are misused. Ozone gas is a pollutant that is harmful to your health. Exposure to ozone can result in chest pain, coughing, shortness of breath, and throat irritation. Ozone can also worsen asthma and respiratory infections.

The health risks ozone generators can pose are why it’s essential that you operate them when there is no one around, including pets. Ozone generators have timers so you can program them to turn on and off at specified times, which prevents you from having to reenter your space to shut off the unit manually.

After an ozone generator finishes its cycle, it’s important to wait until the ozone dissipates before reentering the space. This usually takes about an hour.

Maintenance

To maintain an ozone generator, you need to clean the ozone plates periodically. Most ozone generators are designed so that users can easily remove the plate or plates inside the unit. By cleaning the plates regularly, you’ll both ensure the generator operates at peak performance and extend the life span of its plates.

Our Top Picks

Before you go reaching for the air freshener, the following products are among some of the best ozone generators for cleaning and sanitizing the air in your home and are safe to operate when used as directed. Remember, though: Never run an ozone generator in an occupied room.

Best Overall

The Best Ozone Generator Option: Enerzen Commercial Ozone Generator 6,000 mg
Photo: amazon.com

With its small size and extensive coverage area, this ozone generator is an excellent option for the home or office. It can generate 11,000 mg/hr, making it suitable for larger spaces. It features ceramic ozone plates that last longer than standard metal ones and a stainless steel filter that is easy to remove and clean.

At just 6.75 inches long, 8 inches wide, and 5.75 inches tall, this unit is about the size of a small box and will sit discreetly in your space. Because it weighs just 5 pounds and has a folding handle, you can carry it easily from room to room. A timer allows you to set treatment cycles of up to three hours long. The Enerzen is housed in a durable aluminum casing.

Product Specs

  • Type: Cold plasma
  • Ozone Output: 11,000 mg/hr
  • Weight: 5 pounds

Pros

  • Suitable for large spaces
  • Long-lasting ceramic ozone plates
  • Removable stainless steel filter
  • Compact, portable size

Cons

  • Some users report issue with odor removal

Best Budget

The Best Ozone Generator Option: Ivation Portable Ozone Generator 600mg/h
Photo: amazon.com

With its innovative design and low price, this is a great budget ozone generator. Despite its small size—it measures just 10.6 inches by 7.4 inches and weighs 1.5 pounds—this generator puts out an impressive 600 mg/hr, which is enough to clean a small room. It emits ozone through two flexible silicone tubes or two diffuser stones, which can be placed in water or on objects to remove odor.

With these attachments, this ozone generator enables you to freshen and deodorize small rooms, drinking water, fruits and vegetables, and more. A timer allows you to run this unit for up to 30 minutes, and an LCD display makes viewing and controlling this unit easy. This ozone generator also comes with brackets so it can be mounted to the wall.

Product Specs

  • Type: Cold plasma
  • Ozone Output: 600 mg/hr
  • Weight: 1.5 pounds

Pros

  • Suitable for small spaces, drinking water, and food
  • Compact size
  • Two flexible silicone tubes and diffuser stones included
  • Runs for up to 30 minutes

Cons

  • Not meant for heavy-duty use
  • Some issues with ozone output

Best for Allergies

The Best Ozone Generator Option: Green Air Classic Air Purifier Ozone Generator
Photo: sears.com

This triple-threat model from Green Air purifies the air in your home in three different ways: Its UV-light ozone generator eliminates odors, its carbon filter removes allergens, and its ionization function zaps dust particles out of the air.

With its large fan and high output, this UV light-powered unit can handle spaces of up to 3,500 square feet. It includes a remote control for convenient operation and has a built-in timer.

At 15.5 inches by 12.25 inches by 11.25 inches and weighing 12 pounds, this generator is on the larger side. However, its sleek design makes it an attractive addition to a room. Keep in mind that its ionization and filtering functions, though useful, make this one of the more expensive ozone generators.

Product Specs

  • Type: Ultraviolet
  • Ozone Output: 360 mg/hr
  • Weight: 12 pounds

Pros

  • Integrated carbon filter removes allergens
  • Ionization function for dust particles
  • Covers 3,500 square feet

Cons

  • Produces less ozone than comparable models
  • Heavyweight
  • Pricey

Best for Odors

The Best Ozone Generator Option: OdorStop OS1500 - Ozone Air Purifier
Photo: amazon.com

Drive odors from your home with this powerful ozone generator from OdorStop. It features a powerful 600 mg/hr output and 110 cubic feet per minute fan, making this unit capable of treating a 1,500-square-foot space. Users can customize its on-and-off times by programming the 12-hour timer and twisting the control knob to set the output between 50 and 600 mg/hr.

This rugged generator features aluminum construction and a design that allows you to slide out the ozone plates easily to clean them without disassembling the unit. At 12 inches by 9 inches by 7.5 inches, this unit doesn’t take up much space. It weighs just shy of 10 pounds, so it’s easy to move from room to room.

Product Specs

  • Type: Cold plasma
  • Ozone Output: 50 to 600 mg/hr
  • Weight: 10 pounds

Pros

  • 12-hour timer built-in
  • Covers 1,500 square feet
  • Sturdy aluminum construction
  • No assembly required

Cons

  • Pricey
  • Not meant for very large spaces

Best For Small Spaces

Best Ozone Generator Option: OdorStop OS900_6G Professional Grade Ozone Generator
Photo: amazon.com

Remove odors from your home with the OdorStop OS900/6G Professional Grade Ozone Generator. Suitable for spaces of 900 square feet or less, this ozone generator is suitable for RVs, bedrooms, nurseries, boats, offices, and hotel rooms. It emits 400 mg/hr, weighs just 6 pounds, and measures 11 inches by 10 inches by 9 inches.

While it only has 1 ozone treatment level to emit, it has a sturdy aluminum construction and has a built-in 2-hour timer. For added convenience, this ozone generator also has a replaceable filter, an 80 CFM fan, a built-in handle, and requires no assembly before use.

Product Specs

  • Type: Cold plasma
  • Ozone Output: 400 mg/hr
  • Weight: 6 pounds

Pros

  • Covers 900 square feet
  • Suitable for RVs, bedrooms, nurseries, boats, offices, and hotel rooms
  • Built-in 2-hour timer
  • Compact, portable design

Cons

  • Only 1 ozone output level
  • Not meant for very large spaces

Best for Large Spaces

The Best Ozone Generator Option: Airthereal MA10K-PRODIGI Ozone Generator 10000 mg/hr
Photo: amazon.com

For large spaces, a few hundred or even a few thousand milligrams per hour of ozone output isn’t going to cut it: You need a bigger ozone generator. With an output of 10,000 mg/hr, this model from Airthereal packs plenty of odor-removing punch to handle commercial spaces up to 2,000 square feet. This unit features a 12/24-hour cycle mode that activates the generator at a set time each day, eliminating the need to set the generator daily.

The Airthereal has five ozone production levels, and a five-speed fan enables you to control the ozone distribution. This unit is 9.3 inches by 7.1 inches by 6.8 inches, weighs less than 7 pounds, and has an easy-to-read LCD display. With its 304-grade stainless-steel construction and rugged handle, this unit can endure being moved around a lot.

Product Specs

  • Type: Cold plasma
  • Ozone Output: 10,000 mg/hr
  • Weight: 7 pounds

Pros

  • Covers 2,000 square feet
  • 12/24-hour cycle mode; automatic turn-on
  • 5 ozone production levels and 5-speed fan
  • LCD display built-in

Cons

  • No WiFi control included; included on other models from this brand
  • Some maintenance may be required

Best For Commercial Use

Best Ozone Generator Option: Enerzen O-888 Ozone Generator 20,000 mg
Photo: amazon.com

When you need to remove odor from a large space, you need some extra muscle from an ozone generator. The Enerzen O-888 Ozone Generator covers over 4,000 square feet with its powerful 20,000 mg/hr emission level. You can adjust the fan speed to create a “pulsating” effect for musty or strong odors.

It also has a built-in timer for up to 3 hours of operation and you can add another 30 minutes for additional odor-removal. Finally, this generator is only 5 pounds and has a built-in handle for added portability. Its dimensions are 6.75 inches by 8 inches by 5.75 inches.

Product Specs

  • Type: Cold plasma
  • Ozone Output: 20,000 mg/hr
  • Weight: 5 pounds

Pros

  • Covers 4,000 square feet
  • Adjustable levels create a pulsating effect
  • Runs for up to 3 hours
  • Affordable price point

Cons

  • Some users report manufacturing defects

Best for Car

The Best Ozone Generator Option: Alpine Air Commercial Ozone Generator - 6,000 mg/h
Photo: amazon.com

Cars have a tendency to trap dirt and dust in their carpeting and upholstery, making them havens for nasty smells that are notoriously difficult to eliminate. When that pine tree air freshener hanging from the rearview mirror isn’t up to the task, call for reinforcements. With its 6,000 mg/hr ozone gas output, this ozone generator from Alpine Air can put an end to offending odors in just a couple of hours.

Weighing just 6 pounds and measuring just 11 inches by 9.7 inches by 8.5 inches, this unit fits easily into your car. It features a two-hour timer, which helps you eradicate lingering odors from the fast-food trash that’s been sitting in the back seat for weeks. A quick-access slot allows you to remove and clean the ceramic ozone plate quickly and easily, and an ergonomic foldable handle makes it easy to carry.

Product Specs

  • Type: Cold plasma
  • Ozone Output: 6,000 mg/hr
  • Weight: 6 pounds

Pros

  • Compact design
  • 2-hour timer built-in
  • Quick-access slot for cleaning
  • Foldable handle built-in

Cons

  • Not safe for use around houseplants
  • Some users report manufacturing defects

Best Portable

Best Ozone Generator Option: Vivosun Ozone Generator
Photo: eBay.com

When you go on vacation or want to move your generator from room to room, the VIVOSUN Ozone Generator can be just the ticket. Equipped with a molded carrying handle and only weighing 7 pounds, this model emits over 10,000 mg/hr which allows it to cover 2,000 square feet.

Measuring 6.8 inches by 7 inches by 9.33 inches, this ozone generator weighs just 5 pounds making it compact enough to transport or carry. With a built-in timer that reaches up to 3 hours of operation. Unfortunately, this generator does run at a 40 dB sound level so it may make some noise while operating.

Product Specs

  • Type: Cold plasma
  • Ozone Output: 10,000 mg/hr
  • Weight: 7 pounds

Pros

  • Covers 2,000 square feet
  • Built-in timer; maximum of 3 hours
  • Molded handle built-in
  • Affordable price point

Cons

  • Does not run silently

Our Verdict

It may be hard to decide which ozone generator is best for your intended use when there are so many on the market today. One of the best options overall is the Enerzen ozone generator with its cold plasma design, 11,000 mg/hr emission level, and 5-pound construction, making it suitable for large spaces.

Alternatively, for a budget-friendly pick, the Ivation ozone generator is suitable for small spaces, drinking water, and food with its 600 mg/hr emission level and 1.5-pound construction.

How We Chose the Best Ozone Generators

We researched the most sought-after ozone generators in their respective categories and discovered that the best models are determined by their type, ozone emission levels, size and weight, and other special features included by select brands.

While searching for the best ozone generators available, the cold plasma options proved the most popular for their ease of use and effectiveness. Though not as popular, the ultraviolet option included is also a viable option for its high ozone emission and allergy-control capabilities. No matter the type, the above list features options with 50 to 20,000 mg/hr ozone emission levels depending upon your space and preference.

The vast majority of our picks are also compact and lightweight enough to be transported or moved from room to room. Finally, in the interest of choosing the best options on the market, our picks also come with built-in timers, multiple ozone emission and fan levels, handles, and long runtimes of up to 3 hours.

The Advantages of Owning an Ozone Generator

There are many benefits to having an ozone generator in your home. Ozone can quickly break down odors and kill mold and mildew, making it effective at deodorizing basements, bedrooms, kitchens, and bathrooms.

An ozone generator can also purify and deodorize drinking water and freshen food, helping to stave off spoilage. These powerful machines can also be used to kill harmful bacteria and viruses.

  • Ozone generators can deodorize rooms.
  • They kill harmful viruses and bacteria.
  • They purify drinking water.
  • They keep food fresh longer.

FAQs 

If you’re unsure about the difference between an ozone generator and an air purifier or what to do when operating ozone generator models, read on for answers to those questions and more.

Q: What is the difference between an air purifier and an ozone generator?

An ozone generator creates and releases ozone gas. Ozone sanitizes and cleans the air and objects around it. In comparison, an air purifier uses a filter that traps allergens, pollutants, and other substances before returning the air to the room.

Q: Can ozone generators be used at home? 

It is totally safe to use an ozone generator at home. However, please be advised that all pets, children and adults, and plants should be removed from your space before turning your ozone generator on.

Q: How do you use an ozone generator safely?

To use an ozone generator safely, run it only when the space is unoccupied. Purchase only an ozone generator that has a timer that will shut it off automatically. Ozone needs time to dissipate, so wait one hour after the generator has shut off before reentering the space.

Q: How long should I run an ozone machine for? 

As a rule of thumb, an ozone generator should run for 3 to 10 hours to ensure it properly removes odors. To ensure you are using your ozone generator for the correct amount of time, consider an air quality monitor that measures ozone levels in your home.

Q: How long do ozone generators last?

The average lifespan of an ozone generator is about three years. Its life span largely depends on how often you use it and how regularly you clean the ozone plates.