Air purifier brand comparisons for Singapore

Where the comparison usually starts

Most people land here mid-decision. A clinic has been running a household-brand unit bought during a renovation, a facilities manager has three different purifiers across three sites and no record of when the filters were last changed, or a practice is being asked by an insurer or landlord for documentation a consumer product simply doesn't come with. None of that means the existing unit is bad. It means the comparison needs to be made on paper, not on marketing copy, and that starts with what the room actually needs before any brand name enters the conversation.

Size the room before you size up the brand

Required CADR in m³/h is floor area (m²) × ceiling height (m) × target air changes per hour. US CDC guidance for occupied spaces is at least 5 clean-air changes per hour; at 5 ACH, an airborne contaminant is reduced by 99% in around 55 minutes, at 6 ACH in about 46 minutes, at 10 ACH in about 28. This number, not the brand on the box, is what should drive the shortlist. A unit rated well above the room's CADR requirement is often no better in practice than one correctly sized but running on a lower, quieter fan setting. The honest comparison framework covers this calculation in more detail and is the right starting point before reading any single brand-versus-brand page.

What actually separates a medical-grade unit from a consumer one

The distinction that can be verified is certification and filtration stage, not adjectives. A genuine medical-grade claim rests on an FDA Class 2 medical device listing held by the manufacturer (not "FDA approved" or "FDA certified", which is not how that listing works), an H13 HEPA specification, and supporting ISO 9001/14001 management-system certification. AIRE's own chamber testing recorded over 99.99% of the tested organisms — E. coli, Staphylococcus albus and Influenza A — eliminated within 60 minutes under chamber-test conditions, against a plain-HEPA comparison run's passive decay of roughly 4 hours 23 minutes; results in an occupied room with doors opening and people moving through it will differ from a sealed chamber. That gap between passive HEPA trapping and active elimination is exactly what the best medical-grade air purifier guide walks through, including how to check any brand's paperwork rather than take the claim at face value.

It's also fair to say plainly: a consumer unit is sometimes genuinely enough. For a personal bedroom, a home office or a low-footfall retail corner, passive HEPA trapping at the right CADR does the job. The Xiaomi comparison and the Levoit comparison both set out where that line sits, and a separate compact-unit comparison covers when a desktop-class option like the KJ100F is sufficient and when a room has outgrown it.

Comparing named brands on what can be checked

A shortlist built on brand reputation alone tends to compare design language and price point, which is exactly where consumer brands are built to win. AIRE's comparison with Dyson looks at design focus versus certification directly; the Philips comparison and Coway comparison address the specific hesitation of switching away from an established, working product. Offices moving on from a consumer brand should read the Blueair comparison, and sites with an aircon contractor pushing an integrated purification add-on should see the Daikin comparison before deciding a dedicated unit is unnecessary. Sharp's Plasmacluster technology gets a similarly fair, specifics-only treatment rather than a claim war.

Where two brands both use medical-grade language in their marketing, the comparison has to go further than the word "medical". The Aurabeat comparison sets out how two FDA Class II-listed brands differ on filtration, sterilisation and rental terms, and the Aurabeat alternatives guide gives a checklist for anyone comparing on that basis. The same applies to the Sterra comparison, and to comparisons against LUMIAIR, MEDPRO and Trident/AirDome, where a contractor's recommendation is not the same thing as an independent one. If a promotional price on a brand like Cosmo is what's under consideration, the Cosmo comparison sets out what the extra spend on medical-grade filtration buys and when household or clinic composition changes that calculation. Anyone starting from "what's out there" rather than a specific brand should begin with the honest market guide, and anyone moving away from Novita has a dedicated alternative checklist to work through first.

Procurement: purchase, rental and servicing

Once the sizing and the certification comparison are settled, the remaining differences are procurement mechanics. AIRE units are quoted for either outright purchase or serviced rental — rental includes filters, parts, preventive visits and two-way delivery — after the space has been sized, because pricing that ignores room size is not a comparison anyone can act on. A one-month rental pilot is available for sites that want to test fit before committing, priced the same as any other rental period rather than offered as a trial. The commercial rental guide and the rental-versus-buying guide cover how that decision is usually made, and the range itself — from the Fillo Plus at up to 30 m² through the Pro 800S at up to 96 m² — is set out on the products page.

What we will not claim

We will not tell you a purifier reduces sick days, infections or any other health outcome, because that isn't something a single piece of equipment can honestly promise. We will not describe any room as "sterile" or "safe", and we will not say a unit is MOH- or HSA-approved, because air purifiers aren't approved by either body in that sense. Where we cite a test result, it's our own chamber test under stated conditions, not a claim about your specific room. Our approach to that distinction is explained in full on how we verify our claims.

The next step: size it, don't guess it

For a single room, the size calculator gives a fast CADR estimate. For a multi-room clinic, office or home, a Clinic Air Report is the more reliable route: a site visit at S$150, covering a minimum of two rooms, where every room is measured on site and a report is emailed back within two working days. It carries a sized-right guarantee — if the specified unit doesn't reach the report's air-change figure in that room, we upgrade or add a unit at no extra cost. That report, not a brand comparison alone, is what turns this research into a decision you can defend on paper. Questions on any of the above can go to our team directly.