EcoWater systems usually cost $3,600 to $10,000 installed. The typical quote homeowners report is about $6,700, and quotes through the Costco program cluster around $6,400.
Real EcoWater quotes
| System | Price | When |
|---|---|---|
| ERR3700 refiner (softener + filter) | $3,600 – $6,000 | 2024–2026 |
| Refiner through Costco (California) | About $5,000, plus a $500 Costco Shop Card | 2024 |
| Refiner + EcoWater reverse osmosis (Kansas) | $5,900, first-year service included | 2025 |
| ERR3700 replacement (California) | $6,750 | 2026 |
| Costco lineup, entry to ERR3702 flagship | About $6,000 – $10,000 | 2023 |
How the Costco EcoWater program works
Costco doesn't sell the system itself. It refers you to a local EcoWater dealer, who tests your water at home and sets the price. Qualifying purchases earn a 10% Costco Shop Card, and Costco members get an extended warranty. Reported Costco-program quotes run $5,256 to $7,300, so compare the price after the Shop Card against a regular local quote.
Warranty
Mineral and brine tanks: lifetime for the original owner. Valve body: 10 years. Electronic faceplate: 7 years. Other parts: 5 years. Refiner media: lifetime for the original buyer. Labor is not covered on residential models, so ask the dealer what service costs.
Is EcoWater worth it?
EcoWater refiners combine softening with carbon filtration, which helps if your water has a chlorine or chloramine taste, as Omaha and Lincoln city water can. If you only need softening, a single-tank softener usually costs $1,000 to $2,500 installed. See our full cost guide and filter cost guide.
How not to overpay
- Get at least one quote from a non-EcoWater installer.
- Ask for the softener-only price without the drinking water system.
- Don't sign on the first visit. A former EcoWater rep advised walking away from refiner quotes far above $3,000 installed, though prices have risen since.
- In-home sales usually fall under the FTC Cooling-Off Rule (3 business days to cancel).
Common questions
How much does an EcoWater softener cost?
Most EcoWater systems cost $3,600 to $10,000 installed, with a typical quote near $6,700.
Is the Costco EcoWater deal worth it?
It can be. Costco-program quotes run about $5,256 to $7,300 and earn a 10% Shop Card, but the local dealer sets the price, so compare it to another quote.
Can you rent an EcoWater softener?
Some dealers advertise rentals from about $35 a month, but rental data is limited. Ask your local dealer.
Does the EcoWater warranty cover labor?
No. Residential EcoWater warranties cover parts, not labor, so service visits are extra.
Compare your EcoWater quote
Compare up to 3 free quotes from local water treatment pros in Omaha, Lincoln and Council Bluffs. No cost, no obligation.
Sources: owner quotes compiled by Mid Atlantic Water (an online softener seller, Nov 2026); TapWaterData brand price data (median $6,700 from 9 quotes; Costco program median $6,386 from 6 quotes); EcoWater spec sheets. Prices are estimates; always get written quotes.