Best Air Purifiers UK 2026 — HEPA Filters, Live Stock & Prices
Compare air purifiers with HEPA filtration, live stock tracking, and real prices updated daily. From budget bedroom units to whole-home Dyson purifiers — find what's actually buyable right now.
119 of 154 in stock · 4 retailers tracked · updated 15:45
HEPA vs ionic — what actually works?
HEPA filters capture 99.97% of particles down to 0.3 microns — pollen, dust mites, pet dander, mould spores. This is what you want for allergies and asthma. Ionic purifiers produce ozone as a byproduct and are generally less effective. The Dyson and Philips units below are all HEPA-certified and independently tested. Check the CADR (Clean Air Delivery Rate) in the comparison table — higher is better.
Room size matters more than price
A £100 purifier in a large living room is useless — it can't cycle the air fast enough. As a rough rule: multiply the room's square metres by 2.5 to get the minimum CADR you need. A 20m² bedroom needs ~50 CADR minimum. The table below shows the rated coverage area for every unit alongside live price and stock.
All air purifiers — stock & price
154 of 154 products
These units sell out fast whenever demand spikes. Set a restock alert and we’ll email you the moment a sold-out unit is back.
Buying guide FAQ
- What's the best air purifiers to buy right now?
- Right now, 119 of 154 units we track are in stock. The cheapest in-stock option is the 2 X HEPA Air Purifier for Bedroom - 24dB Quiet - Ivory - 2Pack + 3 Modes at £20.42 from eBay. Prices and stock change throughout the day — the table below is live.
- How often are these prices updated?
- We check every retailer multiple times per day. The table shows the most recent check time for each offer. During hot weather we increase the check frequency as stock moves fastest then. Last full sweep: 20 October 2026 at 15:45.
- Are these affiliate links?
- Yes — when you click through and buy from a retailer, we may earn a small commission at no extra cost to you. This is how the site stays free and ad-free. We also link to our own products (contract templates, childminder policies) where relevant — those go directly to our Stripe checkout. Full details on our disclosure page.