Aireox 45D Air Purifier Review

Aireox 45D

Designed for the chemically sensitive (MCS), the 45d Air purifiers by Aireox Research are portable and quiet.

The manufacturer claims its 125cfm air recirculation rate will produce 4 air exchanges per hour in a 240 sq ft room.

I think about half that would be a better room size: 120 square feet, a small room. I estimate a 100 CADR for the D45, due to the extra VOC filtering resistance.

The model 45d air purifiers have an unusual combined filter media; 4.5 pounds of adsorptive carbon and potassium permanganate ("purafil"), ahead of a .5 micron electrostatic particle filter.

Potassium permanganate oxidizer is found in top quality purifiers such as IQAir, and is unusual in this price class. The 45d has 60 % carbon and 40% "purafil."

The 45b model, with 100% carbon, is just 20 dollars less.

Zeolite, which is a cheaper VOC filter material subject to problems, is not used.

The carbon-oxidizer mixture works especially well to reduce airborne formaldehyde.

aireox air purifierAireox D-45 is not a HEPA 0.3 micron spec air purification unit.

The old .5 micron particle filter is now a near-HEPA, 99% at .3 micron, still not a true HEPA filter.

The company website has this claim: "100% filtration, no bypassed air." Pretty vague.

Remember, air purifier efficiency is properly expressed as a percentage of particles of a specific size class captured by the unit. "99.97%@.3 micron"

A website that sells Aireox,, said: “Our particle count measurements of Aireox efficiency show near-HEPA efficiency.”

Aireox is Designed for MCS

Many HEPA air purifiers use adhesives, subject to outgasing, to close the ends of the pleated paper filter. Aireox air filters are built without sealants.

They use special zero-outgassing cords, long lasting zero-outgassing paint, and sealed motors that do not allow oil or chemicals to escape into the air.

All metal, no plastic, and zero ozone make a pretty good MCS package.

MCS users are claimed to tolerate the Aireox D-45 air purifiers with no problems.

However, there are recent complaints (2014) about an Aireox D22 with cord outgassing.

There are no noise figures on the Aireox site. "Quiet enough for the bedroom" is all they say.

Consumer feedback suggests low noise emissions, most users say both speeds are quiet.

The 2-speed sealed motor has no hot exposed motor parts, for safety and long motor life.

D-45 is Compact and portable at 14 inches high by 10 inches in diameter.

Air Filter Costs

Filter change interval is 6 months to a year.

That could make the purifiers filter replacement costs, at $98.95, very significant.

Power consumption is less than a 75 watt light bulb.

The motor carries a 5-year warranty with 1-year on the switch.

Aireox Research has been around since the 1970's, and was among the first to recognize the need for real VOC capability.

I am about neutral on this small $359.95 gadget, maybe not really a good choice for victims of MCS.

Aireox is a small company, sales are slow, and customer service has drawn some buyer grousing.

Consumer reviews are very positive, though they are relatively scarce, with just 10 on after years on the market.

The Aireox 45D Professional Air Purifier is available at

Air-Purifier-Power Rating

Each of ten factors gets up to 10 points, 100 is perfect and very unlikely.

1. First do no harm; minimal out gassing, no ozone.

Score: 9 of 10.

2. Serious gas and odor removal is a requirement if health benefits are expected: Units with real carbon VOC capability rank higher.

Score: 9 of 10

3. Air purifiers have quality construction; case, gaskets, seals, and precision fitting eliminate air bypassing and assure high efficiency at filtering sub-micron particles.

Score: 6 of 10, tight build, filter upgrade is still no HEPA.

4. The design maximizes the lifespan of each purifying stage by allowing independent filter replacement. Ideally this is combined with electronic filter monitoring.

Score: 5 of 10, costly combined filters.

5. Purifiers have long filter life, low maintenance requirements, and reasonable operating costs.

Score: 4 of 10.

6. Purifier produces low noise levels and meaningful air flow rates relative to noise.

Score: 7 of 10, one user review says "very quiet."

7. Manufacturer has a track record, with many units in the field and a reputation for supporting what they sell. Warranty period and average air cleaner service life are long.

Score: 8 of 10, 5-year warranty good for price class.

8. Purifier is a value in terms of price/performance ratio. Every price range should be included, “models above $1,200 are best”, while true, is not useful to most consumers.

Score: 6 of 10, pricey.

9. No dirt; air cleaners and manufacturer should be devoid of class-action suits, high returns, recalls, consumer complaints, and legitimate negative consumer reviews.

Score: 7 of 10, Aireox Research is an old air cleaner company-no real dirt, but some gripes on customer service.

10. Purifiers are stylish, portable, comfortable, and convenient for consumer use.

Score: 9 of 10, Compact and portable

Air-Purifier-Power Numeric Rating; 70, lowest "acceptable" score

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