While PEX-A repiping is highly resistant to scale buildup and Copper Type L is also remarkably durable, persistent hard water can still affect your fixtures and appliances over time. High mineral content often leads to unsightly spotting and internal calcification in water heaters. To protect your investment, our team here at Advanced Repipe Specialist INC recommends looking into a whole-home water filtration or softening system to see if it can work alongside your new installation.