Some of the accompanying apps offer other useful features, such as information about the air quality levels in your home, reports on the outdoor air quality in your area and reminders to change the filter. Studies have shown that when you switch the air purifier off, the number of pollutants in the air will slowly creep up. So if you suffer from extreme allergies, it would be best to keep it on constantly. You can also get air purifiers that emit negatively charged ions into the air. When these ions combine with allergens or dust in the air, they become too heavy and will fall to the ground so you can clean it up with a vacuum cleaner.

Air purifiers that have a HEPA (High-efficiency particulate air) filter should be the most effective at removing dust particles (and other pollutants) from the air. Does an air purifier cool the room? This stylish air purifier is perfect for those who suffer from asthma, hay fever or allergies. While some air purifiers just provide one-stage filtration, this model features an advanced 7 stage air purification system including HEPA, Carbon and extra PM2.5 filtration technologies to remove all forms of airborne contaminants that can have a negative impact on your health and well-being. Each stage is specifically designed to filter out different types of particles and pollutants, leaving you with nothing but clean, healthy air. It captures everything from dust, pollen, pet dander, and mould and even helps reduce the smell of cigarette smoke too! The most popular type of air purifier is one that comes with a high-efficiency particulate air (HEPA) filter.

Should I sleep with the air purifier on?

The first thing we noticed about the MeacoClean was its small and sleek appearance. We placed it under a desk and it blended so well into the surroundings, it was easy to forget it was there. Levoit claims that it's a great choice for anyone suffering from allergies, nasal stuffiness, a cough, sneezing or asthma. It's also super quiet, being able to operate at 25db. However, be strategic about when you do this. If you live near a busy main road, for example, don't open your windows when traffic is at its busiest.

We can't specifically test using traffic pollution particles, another concerning pollutant you may be keen to get rid of, but an air purifier that performs well in our dust tests is likely to also do a good job of trapping harmful PM2.5 particles found in traffic pollution, which are a similar size to dust at 2.5 microns (µm). All models make a bit of noise in use, but some are far louder than others, particularly on the highest setting. The quietest do a very good job both on the lowest and highest setting. These should remove 99.97% of airborne particles that are 0.3 microns or bigger, which includes dust, pollen, mould and bacteria, and are used on planes and in operating theatres.We've reviewed a few of Meaco's appliances and have always been impressed with the quality and value for money they provide, and therefore we were pretty excited to put one of the brand's air purifiers to the test. If you do want to sleep with your air purifier on, make sure that you look for a whisper-quiet model and have a good eye mask to keep out the light. Do air purifiers help with allergies? Most air purifiers come with a timer, which could be handy if you routinely change the settings at the same time each day. You might, for example, want your air purifier to run at high fan speed all day if you're out at work, then at a lower, quieter speed in the evening and during the night. Air purifiers can help to relieve the effects of certain allergies caused by airborne particles, such as hay fever — an allergy to pollen — and dust mite allergies, which are caused by microscopic bugs that live inside house dust (gruesome, we know). For getting rid of bad smells like smoke and pets, you could try an air purifier that’s equipped with carbon filters, which are designed specifically for this.

Air purifiers are intended to filter the air rather than cool it. If you're looking to cool a room, you should consider an air purifier with a fan or air conditioning function. Some have a night mode, which reduces the fan speed and dims any lights so that the machine doesn't keep you awake. If you're not planning to run your air purifier in the bedroom, you might not be too worried about this.They can also help with asthma, which can be caused by allergies such as the ones we just mentioned, as well as smoke and pollution in the air. Do air purifiers remove smells? With some machines (not all), you can clean the filters to extend their lives, which will save money on replacements. Always follow the manufacturer instructions, though. Open windows, particularly after any activities that cause air pollution, such as cleaning, dusting or decorating