Instead of installing an expensive indoor air filtration system, consider purifying the air in your house with houseplants. Certain plants that can be grown indoors can also absorb smoke, pollutants and toxins from the air. They serve as natural and inexpensive air purifiers that apart from cleaning the indoor air help in beautifying your living space. Visit the website This Old House to know about 10 air cleaner plants that can be grown indoors. As these indoor plants can thrive with minimal maintenance, they are hassle free solutions for filtering indoor air. A little sunlight and water are usually sufficient for growing these popular houseplants.