Updated September 30, 2026 · SmartHomeCue Editorial Team
Alen Air Purifiers vs Brondell
What sets them apart
| Compare | Alen Air Purifiers ReviewVisitVisit |  Brondell |
|---|---|---|
| Reference models | BreatheSmart 75i, BreatheSmart 45i, BreatheSmart 35i | Pearl H625 Countertop Water Filtration System, Coral UC300 Three-Stage Under Sink Water Filtration System, Capella RC250 Reverse Osmosis Under Sink Water Filtration System, Circle RC100 Reverse Osmosis Under Counter Water Filtration System |
| Price from | $149 | $69.99Lower |
| Clean air delivery rate (m³/h) | 637.125 | 878.38Higher |
| Room size (m²) | 260.13 | 360Higher |
| Filter cost per year | $79.20 to $99Lower | $79.99 |
| Filter change interval | 12 to 15 monthsHigher | 4 to 6 months |
| Quietest noise level (dB) | 25Lower | 30 |
| Markets | US | US, CACovers more |
| Power use (W) | 1.36 to 55 | Not confirmed |
| Mobile app | Yes | Not confirmed |
Same on both: Warranty (1 year).
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Key differences
- Brondell scores higher overall: 9.0 vs 8.9.
- Price from is lower at Brondell: $69.99 vs $149.
- Clean air delivery rate (m³/h) is higher at Brondell: 878.38 vs 637.125.
- Room size (m²) is higher at Brondell: 360 vs 260.13.
- Filter cost per year is lower at Alen Air Purifiers: $79.20 to $99 vs $79.99.
- Filter change interval is higher at Alen Air Purifiers: 12 to 15 months vs 4 to 6 months.
- Quietest noise level (dB) is lower at Alen Air Purifiers: 25 vs 30.
- Support channels: only Alen Air Purifiers offers Phone.
- Brondell is available in 1 more country.
- Filter types: only Brondell offers Uv.
Our verdict on each
Alen Air Purifiers
Alen Air Purifiers suits buyers who want a single machine covering a large open floor and will keep it running for years. The top BreatheSmart purifier delivers 637.125 m³/h of clean air delivery for a 260.13 m² room, and the entry tower purifier opens the range at $149.
Brondell
Brondell suits households in the US and Canada that want certified filtration with a low entry price and no installation visit. Its Coral under-counter system runs 2,271 litres between cartridge changes, and PFAS and lead reduction sits inside the WQA Gold Seal scope.
Score breakdown
| Area | Alen Air Purifiers | Brondell |
|---|---|---|
| Cost | 8.8Entry at $149 and filters at $79.20 to $99 a year, so the purchase price is the expensive part. | 9.2HigherEntry at $69.99 and yearly filter spending of $79.99 keep the bill modest at both ends. |
| Offer | 8.9Higher637.125 m³/h of air delivery, 260.13 m² of coverage and hepa h13, carbon and ioniser inside 12 to 15 months. | 8.6Cartridge life of 2,271 litres plus a $79.99 cartridge give long runs at a steady price. |
| Trust | 8.8Alen Corporation is named as the legal entity, with 1 year cover and support on phone and help centre. | 9.7HigherWQA Gold Seal certification covering a wide contaminant list, with the range listed under 42, 53 and 58. |
Where each is licensed and available
| Country | Alen Air Purifiers | Brondell |
|---|---|---|
| Headquarters | United States | United States |
Available in 1 country for both. Additional countries for Brondell: 1.
By the numbers
| Fact | Alen Air Purifiers | Brondell |
|---|---|---|
| Price from | $149 | $69.99 |
| Clean air delivery rate (m³/h) | 637.125 | 878.38 |
| Room size (m²) | 260.13 | 360 |
| Filter cost per year | $79.20 to $99 | $79.99 |
| Filter change interval | 12 to 15 months | 4 to 6 months |
| Quietest noise level (dB) | 25 | 30 |
| Warranty | 1 year | 1 year |
Also worth a look
Coolblue Belgium has filter change interval at 6 to 36 months, against 12 to 15 months for Alen Air Purifiers and 4 to 6 months for Brondell.
Coolblue Belgium reviewHow they place
| Ranking | Alen Air Purifiers | Brondell |
|---|---|---|
| Air purifiers | 7 of 71 | 6 of 71 |
Every fact side by side
| Fact | Alen Air Purifiers | Brondell |
|---|---|---|
| Products | Purifier | Purifier |
| Filter types | Hepa h13, Carbon, Ioniser | Hepa h13, Carbon, Uv, IoniserCovers more |
| Certifications | Energy star | Not confirmed |
| Legal entity | Alen Corporation | Brondell Inc. |
| Headquarters | United States | United States |
| Support channels | Phone, Help centreCovers more | Help centre |
Where each stands against the rest
| Fact | Alen Air Purifiers | Brondell | Median |
|---|---|---|---|
| Price from | $149above the median | $69.99below the median | $109.99 |
| Clean air delivery rate (m³/h) | 637.125above the median | 878.38highest quarter | 424.925 |
| Room size (m²) | 260.13highest quarter | 360highest quarter | 124 |
| Filter cost per year | $79.20 to $99below the median | $79.99above the median | $79.60 |
| Filter change interval | 12 to 15 monthshighest quarter | 4 to 6 monthsbelow the median | 12 |
| Quietest noise level (dB) | 25at the median | 30above the median | 25 |
Median across 65 listed brands.
Pros and cons
Alen Air Purifiers
Pros
- 637.125 m³/h of clean air delivery with 260.13 m² of stated coverage, so a single unit handles a big open room.
- Filters last 12 to 15 months and cost $79.20 to $99 a year, which spreads the running cost over fewer purchases.
- Runs at 25 dB on the quietest setting, so a machine in a bedroom does not need switching off at night.
Cons
- Entry price of $149 ranks 49 of 76 brands, so this is not the cheapest way into the category.
- The catalogue is limited to purifier, so Vornado Air or Daewoo Electricals suit a buyer who also wants a fan or a dehumidifier.
- Availability is listed for US alone, so a buyer elsewhere has less reason to choose this brand over Clarifion.
Brondell
Pros
- Installation is not required, so a Brondell system goes in without booking a plumber.
- Filter cost per year ranks 13 of 46 among the water filters compared, so the recurring side sits well down the field.
- Entry price ranks 18 of 52 among the brands compared, which keeps the starting outlay modest.
Cons
- Support runs on help centre only, so help is self service rather than a call.
- Warranty cover is 1 year, which is thin for a unit meant to stay plumbed in.
- A replacement cartridge costs $79.99 and ranks 35 of 50 on price, so restocking is the costliest part of ownership.
Who each suits
Alen Air Purifiers
Who it suits
- US buyers who want a single purifier sized for a large open room rather than a small bedroom.
- Households that want app control alongside phone and help centre support from the maker.
- Owners who plan to keep one unit running long term, since 12 to 15 months between filter changes spreads the cost of $79.20 to $99 a year over fewer purchases.
Who should look elsewhere
- Buyers who want fans and humidifiers as well as purifiers, since Vornado Air covers purifier, humidifier and fan.
- Homes that also need drying, since Daewoo Electricals covers purifier, dehumidifier and fan.
- Pet odour cases, since Clarifion lists a pet smell neutralizer among its models.
Brondell
Who it suits
- Households in US and CA looking for a fixed under-sink system with a long cartridge run.
- Anyone treating tap water for PFAS and lead, since Brondell confirms reduction of both.
- First-time filter buyers who want an established US manufacturer standing behind the warranty.
Who should look elsewhere
- Readers set on reverse osmosis: reverse osmosis and reverse osmosis both centre on that, while Brondell's listed system is under sink.
- Buyers wanting a countertop format: countertop covers that style, and Brondell's listed format is under sink.
Country by country
| Country | Alen Air Purifiers | Brondell |
|---|---|---|
| Canada | No | Yes |
| United States | Yes | Yes |
Questions about each
Alen Air Purifiers
How much does the cheapest Alen purifier cost?+
The entry tower purifier sets the entry point at $149. Filters for the top BreatheSmart model add $79.20 to $99 a year on top, so the yearly figure matters as much as the sticker price for anyone keeping the unit for years.
What do replacement filters cost and how often do they need changing?+
Filters for the top BreatheSmart model run $79.20 to $99 a year, and filters hold for 12 to 15 months between changes. That interval sits above the 6 months typical across the category, which is why the yearly figure reads as reasonable.
Brondell
What does a Brondell water filter cost to start with?+
Brondell sells single purchase systems rather than plans, so the entry figure of $69.99 is the full outlay. Nothing further is due to set the unit up, and there is no renewal on the hardware itself. What recurs is the filter side, which is costed separately. Among the brands compared here, that entry price ranks 18 of 52.
How much do replacement filters cost each year?+
A replacement cartridge is $79.99, and filter spending over a year comes to $79.99. Among the water filters compared, that yearly figure ranks 13 of 46, which is the number to weigh before buying, since it keeps arriving long after the purchase is paid off.
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