Aquasana EQ-AST-WH-R Whole House Salt Free Water Conditioner Tank EQ-1000-AST is a whole house water filtration system suitable for commercial and household use. It is made of metal and comes in blue color. The filtration method used is a whole house filter and it is compatible with Aquasana brand. The unit has a height of 46 inches and comes with a manufacturer warranty of 10 years.