In 2013, I made a DIY purifier to get through an apocalyptic Beijing winter. The DIY wasn’t pretty, but it worked. Hundreds of days of tests showed it cut tiny 0.5 micron particles in my bedroom by an average of 84% (1, 2, 3). The DIY proved that air purifiers don’t have to […]
Tag: cost-effective
Renting Air Purifiers is More Expensive Than Buying Outright
Many purifier companies offer air purifier rental services as part of their business model. It sounds great: they offer to rent you an air purifier short term, and you save money in the process. This simple analysis will show why that system is flawed, and how renting air purifiers is just another way to make […]
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