A quality whole house water softener system typically costs $2,500 to $5,000 installed, depending on the brand, system size, and your home’s plumbing setup. More advanced or premium systems can cost more. When you factor in the cost of repairs to water heaters, appliances, and plumbing that hard water would cause, a water softener is a smart investment that pays for itself within 5-7 years. Contact us for a free quote specific to your home.