Updated September 30, 2026 · SmartHomeCue Editorial Team
AirDoctor vs Molekule
Where AirDoctor and Molekule differ
| Compare |  AirDoctor | Molekule ReviewVisitVisit |
|---|---|---|
| Reference models | AirDoctor 2000, AirDoctor 3500, AirDoctor 5500 | Air Mini+, Air Pro, Glow |
| Price from | $399 | $129Lower |
| Room size (m²) | 96.9Higher | 23.22 to 92.9 |
| Filter cost per year | $126.99Lower | $159.98 to $279.98 |
| Filter change interval | 6 to 12 monthsHigher | 6 months |
| Warranty | 1 year | 2 yearsHigher |
| Clean air delivery rate (m³/h) | 944.64 | Not confirmed |
| Quietest noise level (dB) | Not confirmed | 33 |
| Water tank (l) | Not confirmed | 2.8 |
| Power use (W) | Not confirmed | 26 to 123 |
Same on both: Mobile app (Yes), Markets (US, CA).
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Key differences
- AirDoctor scores higher overall: 8.7 vs 8.6.
- Price from is lower at Molekule: $129 vs $399.
- Room size (m²) is higher at AirDoctor: 96.9 vs 23.22 to 92.9.
- Filter cost per year is lower at AirDoctor: $126.99 vs $159.98 to $279.98.
- Filter change interval is higher at AirDoctor: 6 to 12 months vs 6 months.
- Warranty is higher at Molekule: 2 years vs 1 year.
- Support channels: only AirDoctor offers Email, Phone.
- Support channels: only Molekule offers Chat.
- AirDoctor is available in 1 more country.
- Products: only Molekule offers Humidifier.
Our verdict on each
AirDoctor
AirDoctor suits households that want serious airflow in a mid-size room and can absorb a higher outlay. The top model moves 944.64 m³/h of air, the range starts at $399 in US and CA, and replacement filters add $126.99 each year.
Molekule
Molekule suits US and Canadian homes that want purifier and humidifier models from the same maker, and its overall score of 8.6 reflects a balanced pick. The trade-off is the supply bill, since filters are bought on a subscription rather than only at purchase.
Score breakdown
| Area | AirDoctor | Molekule |
|---|---|---|
| Cost | 8.3Entry of $399 plus $126.99 of filters a year keeps the outlay high, ranking 69 of 76. | 8.5HigherFilter fees of $159.98 to $279.98 a year weigh on cost, while the $129 entry price and 2 year warranty pull the other way. |
| Offer | 9.0HigherThe range pairs hepa h13 and carbon media with a mobile app, 944.64 m³/h of airflow, US and CA sales and a 1 year warranty. | 8.8The purifier and humidifier line is joined by the Glow with a 2.8 liter tank, a mobile app and a 2 year warranty. |
| Trust | Not confirmed | 8.6Molekule Group, Inc. in US, trading since 2014, gives a named company, with support on chat and help centre as the soft spot. |
The numbers side by side
| Fact | AirDoctor | Molekule |
|---|---|---|
| Price from | $399 | $129 |
| Room size (m²) | 96.9 | 23.22 to 92.9 |
| Filter cost per year | $126.99 | $159.98 to $279.98 |
| Filter change interval | 6 to 12 months | 6 months |
| Warranty | 1 year | 2 years |
Where each is licensed and available
| Country | AirDoctor | Molekule |
|---|---|---|
| Headquarters | Not confirmed | United States |
Available in 1 country for both. Additional countries for AirDoctor: 1.
Which one suits you
Pick AirDoctor if room size (m²), filter cost per year, and filter change interval matter most.
Pick Molekule if price from and warranty matter most.
Also worth a look
Dr.Prepare has price from at $19.99, against $399 for AirDoctor and $129 for Molekule.
Dr.Prepare reviewHow they place
| Ranking | AirDoctor | Molekule |
|---|---|---|
| Air purifiers | 8 of 71 | 10 of 71 |
Every fact side by side
| Fact | AirDoctor | Molekule |
|---|---|---|
| Products | Purifier | Purifier, HumidifierCovers more |
| Filter types | Hepa h13, Carbon | Hepa h13, Carbon |
| Legal entity | Not confirmed | Molekule Group, Inc. |
| Headquarters | Not confirmed | United States |
| Founded | Not confirmed | 2014 |
| Support channels | Email, Phone, Help centre | Chat, Help centre |
Where each stands against the rest
| Fact | AirDoctor | Molekule | Median |
|---|---|---|---|
| Price from | $399highest quarter | $129above the median | $109.99 |
| Clean air delivery rate (m³/h) | 944.64highest quarter | Not confirmed | 424.925 |
| Room size (m²) | 96.9below the median | 23.22 to 92.9below the median | 124 |
| Filter cost per year | $126.99highest quarter | $159.98 to $279.98highest quarter | $79.60 |
| Filter change interval | 6 to 12 monthsat the median | 6 monthsbelow the median | 12 |
| Quietest noise level (dB) | Not confirmed | 33above the median | 25 |
Median across 65 listed brands.
Pros and cons
AirDoctor
Pros
- Airflow is the standout number: the top AirDoctor purifier moves 944.64 m³/h and covers 96.9 m².
- Filter media combine hepa h13 and carbon in the same cartridge, so particles and odours are handled together.
- Replacement spending is easy to forecast: a year of AirDoctor filters costs $126.99.
Cons
- An entry price of $399 places AirDoctor at 69 of 76 brands on price from, well down the table.
- Filter running cost is the weakest link: $126.99 a year ranks 37 of 46.
- Sales run in US and CA, which narrows where the range can be bought and serviced.
Molekule
Pros
- A mobile app comes with the purifiers, and Molekule covers purifier and humidifier with Air Mini+, Air Pro, Glow as the reference models.
- The 6 month change interval matches the 6 month median across the field, so supply timing is predictable.
- Entry at $129 for the Glow sits right at the €127.49 category median, so the ticket price is unremarkable in a good way.
Cons
- Filter fees run $159.98 to $279.98 a year, and Molekule places 42 of 46 brands on yearly filter cost, so the running bill soon overtakes the $129 entry price.
- Support runs on chat and help centre only, so there is no phone line for setup or filter questions.
- Purifier coverage of 23.22 to 92.9 square meters stops short of the 153.29 square meter category median, so open plan rooms need extra units or a larger rival.
Who each suits
AirDoctor
Who it suits
- Households in US and CA who want app control and top-end airflow from the top AirDoctor purifier.
- Buyers who budget filter spending in advance, since a year of filters costs $126.99.
- Anyone upgrading a purifier for a mid-size room, where the top model covers 96.9 m².
Who should look elsewhere
- Vornado Air, which covers purifier, humidifier and fan if you want a purifier sitting alongside fans and humidifiers.
- Daewoo Electricals, whose purifier, dehumidifier and fan line adds a dehumidifier where AirDoctor's range stays with purifier.
- Clarifion, whose models centre on ionizer and pet smell units, a different route from AirDoctor's hepa h13 and carbon media.
Molekule
Who it suits
- Homes in US and CA that want purifier and humidifier models from the same maker, with Air Mini+, Air Pro, Glow as the range.
- Buyers who plan supply ahead, since the 6 month interval and a $159.98 to $279.98 a year bill make running cost easy to forecast.
- People who want app control and cover, since Molekule ships a mobile app with its purifiers and a 2 year warranty.
Who should look elsewhere
- Anyone who needs a dehumidifier or a fan, since Daewoo Electricals lists purifier, dehumidifier and fan while Molekule lists purifier and humidifier.
- Vornado Air shoppers who want a fan in the same catalogue, since Vornado covers purifier, humidifier and fan.
Country by country
| Country | AirDoctor | Molekule |
|---|---|---|
| Canada | Yes | No |
| United States | Yes | Yes |
Questions about each
AirDoctor
How much does an AirDoctor purifier cost to start with?+
The AirDoctor purifier range starts at $399, and that figure buys the entry model rather than the top of the range. The listed models are AirDoctor 2000, AirDoctor 3500, AirDoctor 5500, so buyers who want the highest airflow step up the range rather than sideways.
What do replacement filters cost over a year?+
Filters are the running cost here: $126.99 covers a year of AirDoctor replacement filters. The top AirDoctor purifier asks for a change on a cycle of 6 to 12 months, so a year of heavy use can mean ordering more than a single pack.
Molekule
How much does a Molekule air purifier cost to start with?+
The listed entry price is $129 for the Glow, and the reference models are Air Mini+, Air Pro, Glow. The larger purifier models sit above that ticket, and running cost is separate: filters are sold by subscription, so budget the machine and the supply as two lines.
What do Molekule filters cost each year?+
Filter fees run $159.98 to $279.98 a year, and Molekule ranks 42 of 46 brands on that line, which places it near the end of the tracked table. The change interval is 6 months, so plan supply payments around that cadence.