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We’ve locked down selected products to 2021’s lowest price for your business. And they’re guaranteed not to rise for 30days!*

*Selected top tech guaranteed to match or be lower than last year’s lowest price. Our price lock means selected prices will not increase during a 30 day promotion period. There are three promotion periods planned, period 1 - 20/07/22 - 18/08/22, period 2 - 19/08/22 - 17/09/22 and period 3 18/09/22 - 17/10/22. Promotion subject to product availability, Currys reserves the right to cancel the promotion at any time.

DYSON Purifier Humidify+Cool Auto React™

N545575W | 419915-01
  • UV sterilisation
  • Multi-stage air purification
  • Purifies / cools
  • Real-time air quality monitoring
  • Suitable for room size up to 27 m²
  • HEPA & carbon filter

DYSON Purifier Humidify+Cool Auto React™

DYSON Purifier Humidify+Cool Auto React™

N545575W | 419915-01

Can't find what you're looking for? Speak to us directly though Shoplive now

Can't find what you're looking for? Speak to us directly though Shoplive now

Business Price Promise

Buy from us safe in the knowledge you’ve paid a great price.

If you find Argos, John Lewis, AO.com or eBuyer.com has the same product at a cheaper price, including voucher offers, we’ll match it – even up to 14 days after purchase.

Learn more
Product information

Did you know ultraviolet light can be used to remove germs? This Dyson Purify Humidify + Cool™ can purify and humidify a whole room – and remove up to 99.9% of bacteria in the water using Ultraviolet Cleanse technology. It uses 3 sensors to monitor air quality and react when it needs to. It reports in real time, so you'll always know what's going on. There are 2 layers of purification that trap gases and up to 99.95% of tiny particles, even ones as small as 0.1 microns – that's the size of microscopic dust mites. And once they're inside, they're sealed there thanks to the fully-sealed system – there's no escape!

Good to know

- Air Multiplier technology circulates purified, humidified air throughout your entire room and pulls in pollutants
- When it needs cleaning, just use the Deep Clean cycle – it helps to remove limescale at the touch of a button
- Diffused mode lets you purify and humidify without cooling - it diverts the airflow through the back of the machine so there's no cold air current
- Night mode keeps monitoring, purifying and humidifying, but on the quietest settings and with the display dimmed
- Sleep timer turns the purifier off automatically - you can choose anywhere from 15 minutes to 9 hours
- Monitor your air quality in real time on the LCD display on the machine
- Control your Dyson using the remote control

Please note:

Dyson's product filtration efficiency at MPPS achieved 99.95% H13 HEPA level defined by EN1822, compared to the purifiers based on market data [from March 2020]. Product filtration efficiency tests conducted at IBR US within a chamber specified in ASTM F3150, under max mode and using particles challenged by DEHS oil according to EN1822. Tested for filtration efficiency at 0.1 microns (EN1822, ISO29463). Tested for purification coverage in an 81m3 chamber. Tested for humidification coverage in a 41 m³ chamber. Gas capture may vary.

DYSON Purifier Humidify+Cool Auto React™, UV sterilisation, Multi-stage air purification, Purifies / cools, Real-time air quality monitoring, Suitable for room size up to 27 m², HEPA & carbon filter, 2 year guarantee, 8 hour timer & LCD display


Basic Specifications

Manufacturer's Part Number
40 - 59 W
Number of Settings
10 Speed Settings
Room Size
Up to 50m


White & silver
Box contents
- Dyson Autoreact Humidify+Cool PH3A Air Purifier
- Filters
- Remote control
923 x 312 x 312 mm (H x W x D)
Boxed dimensions
1000 x 350 x 340 mm (H x W x D)
8.05 kg
Boxed weight
12.12 kg
Manufacturer’s guarantee
2 years


Air purifier with humidifier
- 43.4 W
White & silver


Power cord length
1.83 m
Assembly required


Speed settings
Remote control
Digital display
Noise level
62.4 dB(A)
Auto shut-off
Suitable for room size up to
27 m²
Real-time air quality monitoring
Other features
- Removes bacteria
- Circulates
- Breeze mode
- Night mode
- Diffused mode


Visible water tank


HEPA filter
CADR rating - Smoke
94.7 CFM
CADR rating - Dust
94.9 CFM
Removable filter
Number of filters included
Filter cleaning indicator
Delivery FAQs

Next Day delivery

Next day delivery available for small items directly from our warehouse as identified on our listings page and ordered before 15:00. Postcode restrictions may apply. For full terms and conditions please visit T&Cs.


Standard delivery is free on small items over £40 ex VAT. Large items (large kitchen appliances and some TVs over 40") do not qualify for standard delivery. There are a variety of free and chargeable delivery options for these items detailed during the checkout process.

How long does delivery take?

Products will be sent as soon as possible, but may be delayed due to supply chain pressures. Predicted lead time for your chosen product/s will be detailed in your basket before checkout.
For large items (kitchen appliances, large screen TVs etc.) you can select your delivery date and time during the checkout process.

Installation and recycling information

Installation and recycling are available on large items (large kitchen appliances and TVs over 40”) and can be selected during the checkout process.
If you have selected recycling, please ensure your existing appliance is disconnected (and defrosted where relevant) before our team arrive.
Where installation has been purchased, our team will disconnect your existing appliance, install your new product and connect it to existing services within 1 meter.

Please note: Installations are only available to domestic premises. Our installers are not authorised to install any products within any commercial location

Price Match

We'll match against any other UK retailer store or website price including offer-code discounts.

How to request a business price match
We promise to match the competitor’s price available when you contact us. To request a price match for:

  • Online purchases: Contact us here.
  • In store purchases: Contact us here.

Information you’ll need
If you have already purchased you’ll need your receipt, the competitor you want us to match and details of any relevant voucher offers.
If you have not yet purchased you’ll need; the product code (available on the product page), our price, the competitor you want us to match and details of any relevant voucher offers.

We’ll even price match 7 days after your purchase!
Here’s how to get a price match if you’ve already bought:
If you see the same item cheaper elsewhere, within 7 days of buying from us we’ll refund you the difference.
If you bought online: call us on 0344 561 6789 and have your receipt handy.

Price Promise terms & conditions
We'll match against any other UK retailer store or website price including offer-code discounts. We’ll match the prices of any products (not delivery, installation charges, product protection plans or other services) offered on identical terms and where we can check the price and stock position. Our competitor’s product must be the same model number as ours. Both us and the competitor must have the product in stock and ready for delivery. We do not match competitor’s ink prices, trade, membership & 3rd party market place sellers.

Limited to maximum five units per order or transaction. Cannot be used with any other offer.