Having an air purifier in your house allows you to breathe good, high quality air, and if you tend to suffer from respiratory conditions, having the Best Air Purifier overall, or the Best Purifier for Allergies and Asthma can be very much worthwhile especially if the air around the region or city that you live in isn\u2019t as good as it could be. The Blueair Classic 605 is a great example of what a good quality air purifier is, and with enough power to handle a room size of almost 700 sq ft, it would be perfect for anyone with large rooms, though we wouldn\u2019t go as far as claiming that it\u2019s the Best Large Room Air Purifier. At a cost of almost $800, it\u2019s pricing is in the region of what you\u2019d expect to pay for the Best Smart Air Purifier, so you can bet that it\u2019s got a lot of features in store.\r\n\r\nWhy We Like It - Blueair Classic 605\r\nThe Blueair Classic 605 boasts of HEPAsilent filtration technology, is WiFi enabled, and can be used for large room sizes of almost 800 square feet, and with a body that\u2019s built of steel, it's going to be in good working condition for a long time.\r\n\r\nPower\/Speed\r\nThe Blueair Classic 605 is a pretty powerful unit, with a Certified Clean Air Delivery rate (CADR) of 500 cubic feet per minute. It\u2019s also got 3 fan speeds, giving you options as to how you\u2019d like to use it. It\u2019s filtration process involves the use of Hepasilent Filtration technology, and this, together with its true HEPA filter, allows it to capture up to 99.97% of particles such as dust pollen, mold and pet dander. The technology combines mechanical filtration with the use of an electrostatic charge to be efficient, and is capable of doing up to 5 air changes per hour. The Classic 605 is different from the Rabbit Air Minusa2 Air Purifier in that it\u2019s got a dual protection filter, and this is basically a carbon filter that helps get rid of smoke and bad odours, making sure that the air quality in your home remains nice and fresh.\r\nEfficiency\r\nWith an energy star certification, the Blue Air Classic 605 is a very efficient unit in terms of performance, so it will hardly have your electricity costs jump from what they currently are. It\u2019s 3 different fan speed options gives you the opportunity to use it on the lowest setting so that it can consume even less power. Alternatively, you could also switch it to night mode to keep it quiet and emit less light, but on the Airmega 400S, this would be a more automatic process thanks to its ability to sense ambient light.\r\nVersatility\r\nThe use of Hepasilent technology on the Classic 605 is something that you won\u2019t find with a lot of other air purifiers. This technology makes the work of the true HEPA filter a little easier since it electrifies particles and pollutants, and once they gain electrostatic attraction, they get drawn onto the HEPA filter faster, hence hastening the whole process.\r\nDurability\r\nUnlike the Bissell air purifier which is largely made of plastic, the Classic 605 sports a durable steel body, which makes it a lot more likely to stay in good shape over a longer period of time. The unit is also backed by a 1 year warranty, so you can bet that you\u2019ll get continuous support even after you purchase the unit. There\u2019s also a filter change indicator on the control panel to let you know exactly when you ought to do a filter change, so there\u2019s no guessing that you\u2019d have to for when you need to get new HEPA filters.\r\nValue\r\nYou\u2019ll be able to connect the Blueair Classic 605 to your smartphone thanks to its support for WiFi connectivity, and you\u2019ll be able to manage the air purifier through the Blueair Friend App. Through it, you\u2019ll also be able to get notifications on when filter replacement is due, monitor air quality through Blueair Aware, or even regulate air flow by changing the unit\u2019s fan speeds.\r\nBlueair Classic 605 Wrap Up\r\nKeeping your indoor air clean should no longer be a problem with the Classic 605 Blueair air purifier, as long as you make sure to get it\u2019s replacement filter when needed. If you\u2019re not quite sure yet as to whether this is the right product for you, go ahead and see what other customers had to say on its Amazon page. This way, you\u2019ll be able to make a more informed decision.