The most common air purifier problems, from 684 verified buyers
What owners of the 6 air purifiers we cover complain about and love most, from every 1 to 3 star review and the newest 4 and 5 star ones, written by people the shop checked had bought it. Data as of 12 Nov 2026.
Key findings
- The most common air purifier problem owners report: “Too loud, even on low”, raised in 17% of the 1 to 3 star reviews, followed by “Broke down or developed a fault” (17%).
- What happy owners praise most: “Cleaner air: fewer allergy symptoms and smells”, in 28% of the 4 and 5 star reviews we read.
- 84% of verified buyers rated their air purifier 4 or 5 stars, against 93% across every product type in our study; air purifiers rank 34 of 37 for happy buyers.
- 11% gave 1 or 2 stars, about 1 buyer in 9.
- Across the 5 air purifiers with 30 or more ratings, the share of happy buyers ran from 80% to 96%.
- The cheaper half of these air purifiers (up to ÂŁ129) had a median of 91% happy buyers, against 86% for the pricier half, so paying more did not buy happier owners.
- Owners rate “great choice” and “good with caveats” models about the same here (a median of 87% and 86% happy buyers): the caveats experts raise rarely put owners off.
- Buyers in the UK were the happiest (96% at 4 or 5 stars), and buyers in the US and Canada the least (82%).
Most common problems
Share of the 109 reviews of 1 to 3 stars that raise each problem, grouped across models. What to check before you buy.
- 1. Too loud, even on low17%Came up on 2 models
- 2. Broke down or developed a fault17%Came up on 2 models
- 3. The app won't connect9%Came up on 3 models
What to check before you buy
The problems above, most common first, and how to avoid each one. Our advice; the order comes from the reviews.
- 1. Too loud, even on low (17% of complaints)
For a bedroom, check the noise figure on the lowest setting and its night or sleep mode.
- 2. Broke down or developed a fault (17% of complaints)
Faults usually show in the first weeks, so buy from a shop with an easy returns policy, register the guarantee and keep the receipt. A longer maker's guarantee is worth paying a little for.
- 3. The app won't connect (9% of complaints)
Check that it works fully from its own buttons, so a failing app doesn't stop it.
What owners love most
Share of the 300 newest 4 and 5 star reviews we read that praise each point.
- 1. Cleaner air: fewer allergy symptoms and smells28%Came up on 6 models
- 2. Quiet18%Came up on 6 models
- 3. Easy to set up and use6%Came up on 4 models
How buyers rated them
By where they bought
Regions with 30 or more ratings, by where the shop is. Shops in each region sell different models, so a gap can come from the models as much as from the buyers.
| Region | Ratings | 4–5 stars |
|---|---|---|
| UK | 55 | 96% |
| US and Canada | 576 | 82% |
| Rest of Europe | 31 | 87% |
Against similar product types
| Product type | Ratings | 4–5 stars | 1–2 stars |
|---|---|---|---|
| Air fryers | 22,777 | 97% | 1% |
| Stand mixers | 8,941 | 96% | 2% |
| Dehumidifiers | 7,460 | 96% | 3% |
| Carpet cleaners | 2,674 | 94% | 4% |
| Coffee machines | 24,356 | 93% | 4% |
| Cordless vacuums | 31,841 | 92% | 4% |
| Multi-cookers | 4,300 | 92% | 5% |
| Ice cream makers | 5,871 | 91% | 6% |
| Air purifiers | 684 | 84% | 11% |
| Robot vacuums | 507 | 80% | 16% |
| Wet & dry floor cleaners | 1,282 | 76% | 16% |
How we counted
We count only reviews a shop marks as coming from a checked purchase, and leave out reviewers paid with a free product or a reward and complaints about the shop rather than the product. We read every review of 1 to 3 stars and the newest 4 and 5 star ones, sum up each model's recurring points in our own words and count the owners behind each, then group those points into the themes above across models; a theme shows once at least three owners raised it on two or more models. These are the air purifiers we cover, not every model on sale, so compare them with the other product types here rather than with ratings elsewhere. Price halves use UK prices. The full study compares every product type, and How we decide has the rules for each shop.
Quote and chart these numbers with a link to this page. Cite as: WhichOneToGet, “Air purifiers: verified buyer ratings”, 12 Nov 2026, https://www.whichonetoget.com/research/verified-buyer-ratings/air-purifiers.