[header] How to remove harmful chemicals from your home using houseplants [title] Determine how many houseplants you need for cleaner air. [step] Most of the research done on the air filtering effects of houseplants has been conducted as part of nasa's clean air study program. Nasa's recommendation is growing 1 houseplant for every 100 square feet (9 square meters) of your home's floor area. 
Ideally, these plants should be spread around your home as much as possible. [title] Reduce the emission of harmful compounds as much as possible.