This is one of those rare dual-function appliances that’s effective at both, and if the only downside is that it’s a bit weird looking, then that’s not exactly hard to live with. Throw in smart features, a good remote, and fairly frugal power consumption, and it’s a great addition to your living room or bedroom. A few high-end units double as humidifiers, managing the moisture in the air to prevent dry air causing irritation to the nose, throat, lips and skin. Easy to Operate– With three speed settings that can be selected easily from the intuitive touch control panel, you can adjust air filtration to suit any room.

Anything of a nature that for hygiene or associated health and safety - this includes the Outdoor Spas, Mattresses and Divan Sets Clean Air Pro– This compact model is perfect for small to medium rooms up to 14m², such as your home office, bedroom or living space. The sleek, contemporary body is designed to fit seamlessly into your surroundings.Speed settings. Most air purifiers have a choice of speeds so you can keep it lower for sleeping and turn it up when the pollen count is high. A night mode can also help if you want a quiet setting and dimmer lights while you sleep, although we found this doesn’t always work as well as you’d hope. The best air purifiers for small rooms 1. Russell Hobbs RHAP1001B Clean Air Compact: Best budget air purifier

The best air purifiers for larger rooms 1. Hoover H-Purifier 500: Best quiet purifier for larger rooms LED Display and Lighting– Cleaner air is made simple with this easy-to-use air purifier. This model offers a timer option for 2, 4 or 8 hours, giving you complete control. It also features colour-changing LED lighting to suit any setting. The CADR aims to provide an objective measure of the effectiveness of a portable air purifier at dealing with different types of allergens. A purifier with a score of 250 for dust particles is as effective as adding 250 cubic feet of clean air per minute. Buyers should focus on the results of the specific pollutant they’re aiming to eradicate, whether that’s pollen, smoke or dust, and many manufacturers will supply CADR figures for the most common. Key specs – CADR: 280m³/h; Max room size: 35m²; Power settings: 4; Dimensions (WDH): 25 x 25 x 45cm; Weight: 3.8kg; Filter replacement indicator: Yes; Warranty: 2 years Key specs – CADR: 240m³/h; Max room size: 20m²; Power settings: 4; Dimensions (WDH): 51 x 19 x 53cm; Weight: 5.9kg; Filter replacement indicator: Yes; Warranty: 1 year

CLEAN AIR PRO - This compact model is perfect for small to medium rooms up to 14m², such as your home office, bedroom or living space. The sleek, contemporary body is designed to fit seamlessly into your surroundings. Noise is another factor – you don’t want to replace one irritation (allergies) with another (the sound of a jet plane in your room). For many, the hum is something that doesn’t bother them, but some purifiers can get very noisy. It’s also worth remembering that, while some machines are quiet on their lowest setting (where they’re often at their least effective), they might be loud on the fastest (where they’re working at their best). It’s really designed for small spaces of around 10m², but we found its performance better than the 80m³/h CADR might imply. Spraying antiperspirant into a small room with the purifier at maximum speed, the Clean Air Compact brought PM2.5 particulates down to safe levels within three minutes and six seconds. At that speed it’s fairly noisy, with sound levels reaching around 48dBA, but in general use the lowest setting will be fine, and this takes the noise levels down to 36.2dBA, where the sound is noticeable but hardly aggravating. It’s just as good as an air purifier too, though its CADR rating is slightly below that of the purifier-only Pro P2. In tests, it took PM2.5 levels from a maximum 411 micrograms per square metre to 25 in 135 seconds, bringing it down to double figures in just over a minute. Again like the Pro P2, it’s quiet, with the noise barely noticeable at the lowest speed in purifier mode. Left on Smart mode, with the front-facing display turned off, all but the lightest sleepers should be able to sleep through. Levoit’s Core 300S is an elegant, compact purifier with all the latest features. Like the Princess Smart Air Purifier, it’s Wi-Fi and app enabled, hooking up to the third-party VeSync app for remote control, air quality monitoring, and scheduling operation. You can set it to turn on and off at specific times, set the mode and power settings, even set whether the display should turn on or stay off. If you’d rather go completely hands-free altogether, you can also control the Core 300S through Alexa or Google Assistant voice commands.

LED DISPLAY AND LIGHTING - Cleaner air is made simple with this easy-to-use air purifier. This model offers a timer option for 2, 4 or 8 hours, giving you complete control. It also features colour-changing LED lighting to suit any setting. Filter replacement indicators aren’t crucial and not all air purifiers have them, but this is a helpful feature as a clogged air cleaner won’t work properly. Smart features allow you to operate your purifier remotely or switch it on and off according to a schedule. You may also get useful data on air quality, temperature, humidity and more.

Scottish Highlands & Islands postcodes: AB, FK, HS, IV, KA, KW, PA, PH, ZE, LL58-LL78, IM, TR, PO30-41 This mid-sized model is perfect for small to medium-sized rooms up to 14m², such as your home office, bedroom or living space. At 40cm high and 20cm wide, it fits neatly in a corner, or can be placed on a desk or tabletop. The sleek, contemporary design, digital display and colour-changing LED lights ensure this model fits seamlessly into your surroundings whilst purifying the air around you. The lightweight 2.3kg body means it’s easy to move from room to room, so you can enjoy cleaner, purer air wherever you are. The HoMedics stays quiet at its lowest two settings, but noise levels ramp up on its highest setting to around 54.1dB, making it louder than some larger models. It uses between 16W and 34W while in use. Performance is in line with other small purifiers, taking just over four minutes to bring our PM2.5 particulates down to safe levels from a high of 387 micrograms per square metre. However, with a HEPA filter, a carbon odour filter, an ioniser and UV-C treatment to combat germs, the HoMedics has a more robust set of air treatment features than other purifiers in its class. It’s affordable, but not at all basic.