Building Share Email Article Share on LinkedIn Share on X Share on Facebook Direct Flow Water Purification System by Blueair October 10, 2007 Blueair With a flow rate of .7 gallons per minute, the Direct Flow water purification system consumes 350 watts of power per year and measures 14 3/8 inches by 5 7/8 inches by 18 1/8 inches. 888.258.3247. www.blueair.com.