How much does the purifier cost? The price-point of an air purifier may range from $50 to more than $500, depending on the brand, model, and technology used. Pick a purifier that’s within your budget, and do not assume that a higher price-tag indicates higher quality.
How big is the purifier? Some purifiers are tall and bulky but most are designed to take up minimal floor space. Your bedroom dimensions should be the deciding factor for the proper purifier size. Height may be a major consideration, as some purifiers measure more than 20 inches tall.
How much does the purifier weigh? Although this varies significantly, most purifiers on the market weigh between 10 and 25 pounds. Be sure to test your bedroom floor before investing in a heavier model.
Does the purifier use active or passive purification? There are benefits and downsides to both. Active purification does not feature replaceable parts and the purifiers tend to be quieter, but there are health risks associated with ionizer and UV technologies; additionally, this method is considered less effective because it transfers contaminants, rather than eliminating them. Passive purifiers completely destroy contaminants and are highly effective (for the most part), but the filters need to be replaced semi-regularly and the purifiers can be somewhat loud.
What are the operating costs of the purifier? Ionizers and ozone purifiers don’t have parts that need to be replaced, so the operating costs for these models boil down to electric bills. Filter-based purifiers are costlier; expect to pay at least $150 per year in utilities and replacement parts, including the filter. Some filters cost as little as $10 to $20, while others are $100 or more.
What kind of contaminants do you need to eliminate or transfer? As the table above shows, no purifier technology is effective at eliminating particles, bacteria, viruses, VOCs, and odors. Evaluate your home to determine the contaminants that matter most — and if need be, invest in a more expensive purifier that uses multiple technologies to target a wider range of contaminants.
What is the coverage area? Most air purifiers are rated for effectiveness within certain room dimensions. Larger sizes can provide more coverage than smaller ones, and many models are available in multiple sizes. Measure the square footage of your bedroom before selecting a purifier; otherwise it might not be as effective as you would like.
How many speed settings are included? Most purifiers sold today have multiple settings. Lower settings are typically best for sleeping time, and higher settings are better for times of the year when certain contaminants are high (such as pollen season).
What are the timer settings? Most purifiers allow you to customize the timer, but some older models do not.
Does the purifier come with a warranty? Most purifiers come with some sort of warranty, which may last anywhere from one year to lifetime coverage.