Looking for a home water softener or purification system? Read more about LifeSource Water Systems' products, costs and warranty.

RainSoft also sells problem-specific filters to address individual water issues and systems, including the CleanStart laundry system, which oxidizes tap water to disinfect clothes.

After testing eight home soda makers, I've found the best machines for whipping up your own fizzy drinks while saving money and lowering your sugar intake.