Shark MAX air purifier is a great purifier for up to 1200 sq ft of space. The air purifier is super quiet and very powerful as it protects from allergens, dust and dander. I took it out of the box and put it to immediate use as it protects from the Spring Pollen. I can see a clear difference in the purified air that keeps the allergens away; its HEPA filtration technology is outstanding. It is not too bulky, you can keep it in a corner and switch it on and off as required. I love Shark products, they are super durable and are a must have for your home.