Blueair HealthProtect 7740i Air Purifier with HEPASilent Ultra™ filtration and GermShield™ technology

Ionizer technology is unsuitable for asthmatics and COPD. Health protect is really causes worse lung Damage

This is a top range air purifier. Probably the best in the market at the moment. It covers up to 62sqm so definitely a big room or open plan. We use it on the ground floor and it cleans the air through the whole kitchen, dinning, hallway. Although it is a big device,it looks stylish and elegant. It is very easy to set up. Just place the filters, remove certain plastic covers and plug in. It sort of does the rest for you really. This air purifier has everything you can possibly need. It uses filter to clean a variety of contaminants such as pollen, dust, pet dander, mould, bacteria and viruses with its so called GermShield Technology. Its control panel is easy to use and manange, thanks to its colour coded system. This system tells you the quality of the air through. We normally set it on auto. Sometimes the reading shows no pollutants so it doesn't need to work,other times (if we've cooked, if there's barbecues in the neighbourhood, or we've had the door to the garden open etc.) it goes from yellow up to red, which means severe/lots of air pollutants. Even when on red after about half an hour to an hour it will bring it down to zero again. It sort of produces cool air as it cleans and circulates it. It's silent and quiet, you wouldn't expect it from this size. Has a mild humming which is actually quite soothing. I find it incredible that it can detect things like viruses. On auto mode it adjusts how fast the fan needs to work. But you can change it. The app is great as you can see all the data there. Ideal for people with asthma or allergies or if you want to use it preventatively. It can cover a high square footage, so it's ideal to put in big rooms or offices. It will tell you if it needs a filter replacement. It also claims to use less energy than other ones due to its smart technology. The company offers 1 year warranty which can be expanded to 5 if you register the product and follow their instructions.

I have suffered from hay fever for years, with constant sneezing every day and then associated coughing. I have tried eye drops, which work perfectly well on the eyes but the rest of the body was at the mercy of the pollen. Therefore I thought I would give an air purifier a go. This one, which is available at for 862 pounds on the website of the product (I mention this as Amazon is not currently showing the product as available via Amazon), is certainly expensive but it is clearly a gold medal purifier. My hay fever showed a marked improvement after a day of using it and my wife, who suffers from asthma, is hopeful of having a similar reaction. The purifier is of a good size and I found a perch for it in the corner of my house, with it being a conversation piece when people first see it: ‘Oh my, what is that, is it a Dalek?’ Personally I think it more resembles a robot from Blake’s 7, but I can see the point they are making. Once this is switched on the sound really is very minimal, with it giving off a barely discernible buzz in the background as it goes to work. I stuck it on auto and immediately saw it give off a light blue light which means the air quality is good. Then, about 30 minutes later, it sprung back to life with the light changing to red, indicating bad air. Two minutes later, with it giving off a blast of cold air, the blue light returned. This beauty is going to work superbly in the summer, as the cold air is so refreshing. As a result I think it doubles up perfectly well as a mobile air-conditioning unit. When you put it onto maximum it is reasonably loud, although you can still hear the telly and have a conversation with it on. Anyhow, you will not really need it on maximum as auto prods it into life throughout the day. One thing I should mention is that it was really easy to get going, you simply plug in the plug (both an English plug and a two prong one were provided) and away you go. Once going it is easy to operate, both manually or via your mobile smart phone. The wheels on the bottom of it make it easy to move around the house and I could certainly carry it up the stairs by myself. I found it handy to take to different rooms, to see where the dust was. You could get a couple I suppose to save yourself the bother but, once done, you can leave it in the room that gets the most use, generally the living room. However, saying that, I will definitely move this into the bedroom when the temperature heats up as it will make sleeping so much easier. I must say that this is an absolutely outstanding product; sleek, well-made and superbly engineered. The best Swedish export since Perkele (a band).