Ozone Generators

People tend to think of air pollution as something outside, but the truth is that indoor air can be worse than it is outdoors. That’s why we need to find different methods to treat the air we breathe. We spent more than 6 months trying to find the best way to improve indoor air quality and we finally discovered that ozone generators are exactly what we need. As compared to other air purification systems, the ozone-generating systems produce ozone that is used as an air cleaner. However, if you are looking to purchase an ozone air purification system to remove airborne contaminants and strong odors, this is the right place to be.

In order to help you, we have gathered some of the best models available on the market. While some models come with a plethora of impressive features, but a very high price, others are more affordable but they lack certain features. Therefore, take a look at the matrix below and you will surely find a product that seems interesting to you.

Top Ozone Generators Comparison

1. Green Air Purifiers Pro 2 GAP-400 2. Green Air Purifiers SFA 2.2 3. Ivation IVAOZP001 4. Mammoth Air Generator 5. Ozone Power OP5000
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General Information

Manufacturer Green Air Purifiers Green Air Purifiers Ivation Mammoth Air Ozone Power
Dimensions 15.8 x 14.2 x 10.6 inches 14.9 x 13.4 x 10.8 inches 12.5 x 11 x 15 inches 10 x 7.75 x 8.5 inches 9 x 9 x 7 inches
Weight 17.6 lbs. 16.25 lbs. 12 lbs. 6.35 lbs. 5 lbs.
Material All metal housing Wood / metal Cherry wood / Stainless steel Cast metal construction All metal housing

Technical Specifications

Ozone Output 360 mg./hr. 360 mg./hr. 360 mg./hr. 5000 mg./hr. 5000 mg./hr.
Max. Coverage 3500 sq./ft. 3500 sq./ft. 3500 sq./ft. N/A 5000 sq./ft.
Power Consumption 45 watts 56 watts N/A 55 watts 80 watts
Power Supply 110V 110V 110V 110V 110V AC/60Hz
Air Filtration Media HEPA filter, pre-filter, PCO filter Activated carbon filter, PCO filter 1 Ceramic O3 Plate N/A Pre-filter, 1 ozone plate


UV-C lamp system Sterilizer function 2-in-1 function Timer function 3 hours integrated timer
Large backlit LCD display Purifier/ AWAY mode Timer function Activated oxygen (O3) technology Integrated carrying handle
Timer to set Start/ Shut off times Anti-corrosion protective casing over power module
Triple air filter system Spare fuse inside
Purifier mode Genuine Hex Plate Ozone Technology


Warranty 2-Year Warranty 2-Year Warranty 2-Year Warranty 1-Year Warranty 5-Year Warranty
User Manual
Customer Support

Ozone-Generating Air Purifiers Evaluation

1. Green Air Purifiers Pro 2 GAP-400

After a lot of research into the pros and cons of different models available in the current market, we are proud to include the GAP-400 model on our list. The Pro 2 GAP-400 is the latest version developed by the Green Air Purifiers. As compared to other similar units, this generator comes with a plethora of impressive yet easy to use features. With its triple air filter system, it can remove unwanted contaminants, improving dramatically indoor air quality. Also, with this feature, it can remove dust, animal dander, and other harmful particles that float in the air.

It is also worth mentioning that the pre-filter, HEPA filter and PCO (Photo Catalytic) filter helps it remove airborne contaminants as small as 0.2 microns. Additionally, it comes with a UV-Clamp system which eliminates airborne viruses and germs. What we really like about this model is the fact that it is one of the most energy-efficient models in this niche. It is equipped with a timer that comes in handy when trying to reduce operational costs. Also it consumes only 45 watts, delivering up to 360 mg./hr.

  • Capable of removing particles as small as 0.2 microns
  • It features a triple air filter system
  • It eliminates odors
  • The ozone sanitize pollution embedded in all surfaces in your home, including ceilings, walls, floors and more
  • No downsides to this product
The Green Air Purifiers Pro 2 GAP-400 is a quality generator that only requires low maintenance. Although it comes with many impressive features, it is very easy to use and maintain. Furthermore, it has a compact design, giving you the advantage of portability. Its only downside could be its short warranty. It only has a 2-year warranty.

2. Green Air Purifiers SFA 2.2

If you are looking to purchase an efficient yet affordable ozone generating system for home use, then the SFA 2.2 model from Green Air Purifiers may be exactly what you need. Thanks to its carbon filter which eliminates airborne particles as small as 0.3 microns, it greatly improves indoor air. It has the capacity of producing 360mg per hour of ozone which is enough for effective purification as long as space is not too big. Also, it comes with a UV lamp to eliminate germs and viruses.

In what regards odors and bad smells, this air purifier with activated oxygen does a great job. In fact, the activated oxygen also sanitize everything in your home, including walls, floors, ceilings and so on. Similar to the model above, it comes with a timer. This means that it can easily operate a few hours then shut off automatically. Overall, this is a great unit but if you are looking for a generator that can cover more than 3500 sq. ft. this is not what you are looking for.

  • Perfect for eliminating bad smells including tobacco smoke odors, chemical odors, paint odors and so on
  • ETL certified
  • Ideal for removing dust, animal dander and other harmful particles
  • It comes with 2-year warranty
  • A bit pricey

The Green Air Purifiers SFA 2.2 has been classified as one of the best ozone generating systems on the market. It comes with so many features that it is a bit hard to find something better than this. It can cover up to 3500 sq. ft. and it delivers up to 360 milligrams per hour. Although it is a bit pricey for what is on the market, it is still an option worth taking into consideration.

3. Ivation IVAOZP001

What makes the Ivation IVAOZP001 a worth considering is that it offers what others don’t. This ozone-generating air purifier is not a simple filter. It is a 2-in-1 ionizer and odor remover which purifies and refreshes up to 3500 square feet. As compared to other similar devices, including the models above, this one requires less power and features a quieter fan. Although it is equipped with only one ceramic O3 plate, it features a stronger output than many other generators on the market, delivering up to 360 milligrams per hour.

Its stylish design makes it a great addition to any home. It is lightweight and compact, measuring 12.5 x 11 x 15 and weighing no more than 12 lbs.. Thanks to its lightweight feature, it can be moved from a place to another with ease. Like any other product, it has a few downsides. For example, it comes with a short warranty. It only features a 2-year warranty in comparison to other generators which can have even a 5-year warranty.

  • It delivers maximum efficiency
  • It eliminates odors from pets, cigarettes, chemicals, mold and more
  • It dramatically improves air quality
  • Much quieter than other generators
  • Short warranty
  • Lacks UV lamp system

In spite of how good the other is, we still want to include the Ivation IVAOZP001 on our list. It is astoundingly easy to use and maintain. Even though it has a few downsides, it is our third option. It is a great air purifier for home use, able to capture even airborne that are as small as 0.2 microns.

4. Mammoth Air Generator

It should come as no surprise that we selected the Mammoth Air Generator as one of the best ozone-generating systems out there. It produces over 5000 milligrams per hour to kill germs and viruses. This process also kills bacteria and bad smells, improving indoor air quality. This device comes with many features that make it efficient and very easy to use. Although it does not have a UV lamp system as our first models, it still does a great job in removing harmful contaminants from the indoor air. In terms of design, it features a cast metal construction.

Its sleek, compact shape makes it portable and very easy to carry around. Also, it comes with a stainless steel handle which makes portability easier. Thanks to its lightweight feature, the device can be placed anywhere you need air improved. In what regards the warranty of this generator, you will have an unpleasant surprise from the manufacturer. Mammoth Air Commercial only provide a 1-year warranty for this model.

  • It improves indoor air quality in short time
  • It deodorizes and sterilizes the air
  • Energy efficient unit: it comes with a timer fucntion
  • Compact and lightweight, easy to carry around
  • It is not equipped with a UV lamp
  • Short warranty

The Mammoth Air Generator is our fourth option. It is an incredible ozone-generating device, specifically made to destroy airborne contaminants, including bacteria, viruses and bad smells, improving indoor air quality. Thanks to its activated oxygen (O3) technology, it can be considered one of the best devices in this niche. It has only one downside: the short warranty. It only has a 1-year warranty.

5. Ozone Power OP5000

The Ozone Power OP5000 is another product whose incredible features place it in the 5th position. Able to treat larger spaces of up to 5000 square feet more effectively than other generators, this model is ideal for home use. It is a powerful system that eliminates odors and kills all the germs, bacteria and viruses living in your home that may often cause health problems such as allergies and asthma. Thanks to its useful timer, the device can be set to run for up to 2 hours at a time, much more than competing devices. In fact, you will be pleasantly surprised to find out that a 2-hour treatment with this device is equal to an almost 3-hour treatment with competitors.

We have mentioned above that this is a powerful device, but do you really know what makes it so powerful? Its power stays in its Hex Tech Ozone Plate. This is the part of the generator that produces ozone. If you are thinking about purchasing this model, it is very important to know that it is able to produce over 5000 milligrams per hour of ozone, sufficient to treat up 5000 square feet of living space.

  • It can effectively treat up to 5,000 square feet of living space
  • Long warranty: 5-year warranty
  • It removes any type of odor
  • It is equipped with a Hex Tech Ozone Plate
  • It is not equipped with a UV lamp
The Ozone Power OP5000 is a great option to take into consideration. It comes with a lot of features and it has so many settings and all these for a very reasonable price. As compared to other similar devices, it comes with a long warranty. It features a 5-year warranty. Although it does not have a UV lamp system, it still does a great job cleaning and sanitizing your home.

6. Enerzen Commercial 6,000mg

We are proud to include the Enerzen Commercial 6,000mg generator on our list as it is one of the most efficient yet affordable air purifier deodorizer sterilizers available for sale. It comes with a nice design and a plethora of impressive features that will surely satisfy all your needs. We selected this model for many reasons and the first being that it is capable of removing almost any bad smell from mold, mildew, dust, cigarette smoke, cooking odors and so on. Also, it helps you eliminate mold and mildew growth. In fact, this is the main purpose of this generator: to damage airborne contaminants including bacteria, viruses and smells. 6000 mg/hr of ozone produced remove all these airborne contaminants and refreshes the air.

In addition to this, it is equipped with a timer thanks to which you will be able to monitor and control the length of purification time. It is also worth mentioning that it features a portable design, which means that you can use the unit anywhere, including in your home, office or even in your car. Don’t forget that it comes with a 1-year warranty and a very reasonable price. All in all, it is a good option to consider when shopping generator.

  • Over 6000 mg of ozone production
  • Mold control and removal
  • It removes any type of odor
  • It is equipped with a timer thanks to which you can control the length of purification time
  • Not as powerful as the above models
  • 1-year warranty

If you are on a limited budget, the Enerzen Commercial 6,000mg is exactly what you need. It is a powerful generator that claims to do what others won’t. It comes with a very reasonable price and in spite of its short warranty, it is a great option to consider.

7. OdorStop OS3500UV

Based on market popularity and available features, the OdorStop OS3500UV was one of the finalists in our reviews. It is a quality generator with UV that can easily treat up to 3500 sq. ft.3 ozone plates and 12-hour timer with constant on option. This means that you can set it to start and also to end the process. Additionally, it features a pre-filter and a UV lamp that provides you with the benefit of ultraviolet filtration of bacteria and viruses. If you have a pet, make sure it is not inside the house when the generator is working as it can affect it.

The unit measures 12.5 x 9 x 7.5 inches and weighs 10 lbs.. As compared to some of its above competitors, it is a lightweight unit that can be easily moved from a place to another. What we really like about this generator is the fact that it removes odors from clothes perfectly. As such, if you are a hunter, you can confidently buy this model which is perfect for this kind of things. You just have to place it in your wardrobe and it will remove any odor and bad smell.

  • High quality aluminum construction
  • It is covered by a 5-year warranty
  • It eliminates odors
  • It uses UV lamp to filtrate bacteria and viruses
  • No downsides to this product

The OdorStop OS3500UV is an efficient generator that provides you and your family with a plethora of benefits. It is lightweight, affordable and very easy to use. Plus, it can be used for additional sanitizing process thanks to its UV light. All in all, it is a great unit that should be taken into consideration when making a purchase.

8. Airthereal MA5000

Looking to purchase a powerful ozone machine that intentionally produces ozone gas to purify the indoor air? Then, take a quick look at this generator. The Ozone machine by Airthereal produces 5000mg/h. It is specially designed to sterilize and deodorize your home from harmful pollutants, including bacteria, viruses and bad odors. If you are thinking about purchasing this type of generator, keep in mind that it can only be used in unoccupied spaces.

What we really like about this model is the fact that it comes with a timer that can be set up to 120 minutes. Also, it has a “HOLD” mode that can be used for continuous operation. Depending on the size of your room, the generator can be used from 10 to 60 minutes. It is portable and energy efficient. In fact, as compared to other models, it has ultra-low consumption. It comes with a 3-years warranty and an attractive price, so if you are interested in purchasing it, do not hesitate as it is a great offer.

  • Great air treatment
  • It is covered by a 3-year warranty
  • It removes odors
  • Portable device
  • No downsides to this product

The Airthereal MA5000 another option worth taking into consideration. It is an energy-efficient unit that comes at a very attractive price. It is lightweight, portable and comes with a 3-year warranty.

How We Rated

The market is stuffed with so many types of ozone-generating systems, that finding the right one for your home is almost impossible unless you know what to look for. There are a few things to consider when making a purchase and in the following lines, you will discover the importance of certain features and settings.

  • HEPA Filter

    HEPA filters are able to eliminate at least 99.97% of particles of 0.3 microns from the air. We agree that these “high-efficiency particulate air” filters can be more expensive than other filters, but they perform better with both smaller and larger particles. Since most home appliances are equipped with HEPA filters, you may think that there is are no problems related to their performance. Therefore, before making a purchase, make sure you take a look at the serial number printed on true and absolute filters. Some filters can resemble HEPA filters a lot, but they do not meet the same standards. In simple terms, they are not as efficient as true or absolute HEPA filters.

  • Area Coverage

    The size of the area that a generator can cover is one of the most important factors to consider when making a purchase. The size of a generator is strongly related to the size of a contaminated area, therefore it is extremely important to know the size of the area that you want to purify. Otherwise, one could buy a device that cannot be used for a particular room size. For example, a small device cannot be used to purify a large space because it won’t be very efficient.

  • Timer Function

    The timer function is another interesting feature that a quality ozone-generating system should have. A timer helps customize the operational flow, which means that your device will not be running more than necessary. Also, a timer function will help reduce your energy bills, so a generator that features a timer is surely an option worth taking into consideration.

  • UV-C Lamp

    UV-C ozone-generating systems provide an increased level of disinfection, being extremely efficient in killing bacteria, viruses, germs and other microorganisms. These germicidal lamps are usually used in the room air sterilization. Being more than a disinfectant, the UV-C lamps are also capable of reducing dissolved ozone gas distributed in the room air. The most interesting thing about these lamps is that they provide the best sterilization possible without the addition of chemicals.

  • Warranty

    Another feature that makes quite a difference between a model and another is the warranty length. The period of time for which a model is covered by the manufacturer with a warranty is an important factor to consider as it provides a promise from the manufacturer that certain conditions including the quality of a product will be met.

Things to Consider Before Buying

Ozone-generating systems are more versatile and energy efficient than other sanitation systems. They are effective in disinfection but they also happen to be extremely efficient in odor elimination. As mentioned above, there are so many types and models of generators on the market, that it can be quite difficult to make the right purchase. Therefore, if you are looking for a generator to purify the air in your room, it is important to know several things.

  • Ozone output

    One of the most important spec to look into is the ozone output of the generator. This spec will help you understand how much ozone is delivered by the unit. The rating is generally measured in milligrams per hour. All these information are usually provided by the manufacturer. However, if the unit’s output is not listed, it’s recommended to opt for another unit as that one may have the output levels too low.

  • Air purification technologies

    Ozone is extremely efficient but not by itself. It can only purify the air and eliminate odors. It doesn’t work against airborne allergens. This is why some systems use HEPA filters and activated carbon filters in addition to ozone air purification. Each method has its own purpose. Some air purification technologies remove pollutants that the others don’t’ eliminate. In order to better understand the purpose of each method, take a look below.

  • HEPA filter – It is able to trap 99.97% of particles from the air, including dust, dirt and mold spores.
  • Air ionizer – It fights against allergens, germs, bacteria and more.
  • UV-C light – It destroys germs, bacteria and other microorganisms.
  • Activated carbon filter – It eliminated odors, chemicals and gases.
  • Programmable Ozone – It eliminates bad smells and sanitizes the filters.
  • Unit housing

    Another important factor to discuss is the unit’s housing. While some brands spend a lot of money on stainless steel devices, other opt for plastic cabinets which are less expensive but also less durable. Therefore, if you are thinking about buying a generator for your home, make sure you choose a model with a stainless steel housing. It is a bit more expensive than you might think, but it is more durable and chemically resistant as well.

The Ozone is one of the most powerful sterilizers in the world. It is extremely effective at removing microorganisms such as bacteria, viruses, germs and even odors. There are many ozone-generating systems on the market so it is a bit difficult to find exactly what you need. However, in order to find one that is appropriate for you, it is recommended to compare various models. While some models are equipped with many features, others lack certain features. Also, it is very important to learn how to use the appliance. According to several specialists, too much ozone may be hurting your health, that’s why you need to be fully informed about their proper use.

Frequently Asked Questions

1What material is the grill of the Green Air Purifiers Pro 2 GAP-400 made of?
The grill is made of plastic, but it is a quality plastic.

2Does the Green Air Purifiers SFA 2.2 generator comes with an away mode option?
According to the manufacturer’s specifications, it has this option for hyper cleaning that will run anywhere from 2 to 10 hours per day.

3 Do ozone generators remove and eliminate mold odor?
Based on some research, these devices are specially made to eliminate mold odor. They act as a treatment against mildew and mold.

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