We compare ozone generators by the ozone output in milligrams per hour, price and features.
The only way to be able to compare one machine to another is by the ozone output in milligrams per hour since that is the actual power of the unit. 
No other measurement including square footage ratings, or ozone output in parts per million is a valid method of comparing machines.
 

We generally ONLY compare machines that are sold by manufacturer who have  headquarters in the United States. One exception to that rule is the Enaly brand of ozone generator which is a very cheaply made unit that ships direct from China.   Read More about them HERE. Some ozone dealers based in the United States require you to send your ozone generators to foreign companies for warranty service. Protect your investment, and get the warranty service guaranteed in the United States like Air-Zone® offers.

• Enaly Ozone is a Chinese company which ships ozone generators direct from China.

Since they are shipped direct from China that means the buyer does NOT get a United States warranty on the unit. That means if they decide not to honor the one year warranty the United States Federal Trade Commission cannot help the customer. A Chinese company cannot be forced or compelled by the FTC to honor it's warranty.

The warranty they offer is only one year and if you need service you must pay for the round trip shipping back and forth to China.  As a company they can get a pretty good rate on shipping to you but if you must ship it back to them for servicing it could wind up being quite expensive. It could be $75.00 to $100.00 easily even on a small unit. 

What about when you need to replace the ozone plates? Are you willing to pay the shipping fee from China once again? Most cheap ozone generators don't put out the ozone they advertise, and repairing them is very difficult.

What if you don't like the product or want to upgrade to a larger model and want to return it? 
Are you willing to spend all those shipping fee's back and forth to China, if they indeed do accept refunds?  Is the shipping even insured like ours is?

Since this company is based in China they do not have a United States bank merchant account. 
They only accept payments through PayPal. This is very important because if a customer feels like they have been ripped off here in the US he can "chargeback" his credit card if there is a problem.
You can't do that with PayPal.  Once you pay for an item you are basically stuck with it.
According to PayPal rules they cannot offer even basic PayPal buyer protection because they are located in China.

The consumer should ONLY buy products from a company with a valid United States merchant bank account.   That is the only way he can possibly protect his investment.  There are other O3 ozone companies who also only offer PayPal payments, watch out for them too.

These are NOT quality ozone units.

We know what it takes to make a quality ozone generator and it is next to impossible to use quality parts at the prices they offer.  There is also no way to verify their ozone outputs.
You might save a few dollars right away, but in the long run we don't believe these machines are a very good value.

• Spring Air is a company that refuses to list ozone outputs. There is no way to rate their machines against other ozone generators. Plain and simple, you never know what size you are getting from them. There is NO WAY to compare them to other ozone generators.

Some "A" brand ozone generators claim to make higher forms of ozone such as O3, O4, O5, O6, O7 etc.
The truth is that most ALL corona discharge ozone generators, including ours,  make higher forms of ozone including O3, O4, O5, O6, O7 etc. 
These higher forms of ozone only last for a very short time (seconds) as these unstable bonds quickly break apart due to the unbreakable laws of physics. Therefore, in our opinion, higher forms of ozone formation are basically meaningless, and that's why we don't mention them.  Our machines make them, others do also, it's common knowledge in the ozone industry.

Certain machines also specifically claim to "remove" dust. Our simple question is "where does the dust go?". Unless it's filtering out of the air then it is just another form of ionization that simply "moves" it around the room. What good is that?
It's not really "removed" from the room, it is only "moved" around the room.
What's Wrong with Ionization? Why ionizers don't really remove any dust.
Of course if it is ionization, because no form of ozone can remove dust, then the dust is going to build up a layer of dirt on your walls, floor, and ceiling making it a more bacteria filled room.
Remember just because a machine makes the air smell sweet does not mean that it is a good thing.  And if the same type of machine claims to "remove" dust, yet has no dust filter on it to collect and truly remove the dust from the room, then it is simply moving it around the room.

Some machines list an "output" but it's never called an ozone output directly in the specifications.  Very clever!
In fact some web sites say that what they are making is NOT ozone. Others state it is ozone. Some say they use ionization, and some sellers say no ionization is used. 
If the sellers of these product aren't even sure of what it is  how can you be?
Can this type of machine remove smoke? We don't know. But we do know it can create a smokescreen of confusion for buyers.

They may even have a specific name for this "ozone". How come that self claimed trademarked name they use cannot be found in a U.S trademark search, and other companies in totally unrelated fields, hold trademarks for that particular name?
How come there are no tests on this "new" compound?

There are even some machines that are claming phenomenal mg/hr outputs.
They talk about ozone but don't refer to their products as ozone machines.
Then they claim to be something else. Which is it?  It is NOT ozone!
We don't know what they are measuring, or by what standards, but it cannot possibly be ozone. Certain laws of physics just can't be broken. Don't be fooled.

The clue to this is when they list an ozone output as 1200mg.hr. and recommend the unit for a 139 sq.ft. room.  In an 11 by 11 room like that you could never use a 1200mg.hr. true ozone generator without being driven out of that room in less than a couple of minutes. It would be very difficult to be able to turn a machine down for an air purification level in that room. 
That's why Air-Zone® machines use variable ozone outputs, and short term burst timers. Control over the ozone is the most important factor when using ozone for air purification. The numbers just don't make sense. Don't be fooled by over inflated ratings. Our ozone outputs are checked with 4 types of ozone meters to be extremely accurate. Then they are checked by an outside testing agency.

Some ozone generators also have phenomenally high levels of Nitrogen Oxide outputs that are not only offensive but actually damaging. Poor machine design can contribute to these dangerously high Nitrogen Oxide / Nitric Acid levels.

Be careful of gimmick items, be sure to buy a true, Nitrogen Oxide free ozone generator like our Air-Zone®.

ONLY Air-Zone® has U.S. Patented Xetin Ozone Elements, the highest ozone output for the dollar, and the most innovative features including remote controls, and built in timers.  There are NO better ozone generators on the market!

Please contact us if you find any another brand of air purifier / ozone generator you are considering buying, and we will help you compare models.