Four national brands sell water softeners in North Carolina, all through local dealers. Here is what each one publishes about itself, side by side with what we install.
Updated
Quick answer
All four sell through local dealers who test your water at home, so the dealer matters as much as the brand. Kinetico stands apart with non-electric twin-tank softeners and a published 10-year warranty on Premier XP. Culligan also offers rentals. EcoWater, the oldest, adds a salt-free line. RainSoft is a Pentair-owned Aquion brand.
What each brand publishes about itself, as of October 2026. Where a brand leaves a detail to its local dealer, the table says so.
| Founded | Ownership | How it is sold | Softener design | Published warranty | |
|---|---|---|---|---|---|
| Culligan | 1936 | BDT Capital Partners (since 2021) | Dealer network; rentals and rent-to-own offered | Ask your local dealer | Varies by dealer |
| Kinetico | 1970 | Axel Johnson (since 2006) | Independent dealers; free water test | Non-electric, twin-tank, regenerates on demand | 10 years (Premier XP), 5 years (Signature Series) |
| RainSoft | 1953 | Aquion brand (Aquion acquired by Pentair, 2019) | Independent dealers; free in-home water test | Ion exchange | Terms not listed on brand site |
| EcoWater | 1925 | Marmon Group, a Berkshire Hathaway company | Independent dealers; in-home consultation | Ion exchange with smart regeneration; salt-free line | Terms not listed on brand site |
| Honest Water NC | Honest Water Co dealer | Locally owned by Elvis Cueva | Owner installs every system; free in-home water test | Dual-tank, softener with carbon, salt-free conditioner | Lifetime warranty |
All four national brands sell through local dealers, so price, installation quality and service depend heavily on the dealer in your area.
Emmett J. Culligan founded Culligan in 1936, and the company is headquartered in Rosemont, Illinois. It sells through a network of roughly 1,000 dealers worldwide.
Culligan's own site details rentals, with month-to-month and long-term agreements and rent-to-own options that vary by dealer. For homeowners who would rather own, we offer 0% APR financing for up to 24 months, subject to credit approval, and every system carries our lifetime warranty.
Kinetico, founded in 1970 in Newbury, Ohio, is the most distinct design of the four. Its softeners use no electricity, timers or computers. Twin tanks regenerate on demand, driven by water flow. Kinetico publishes a 10-year warranty on its Premier XP line and 5 years on its Signature Series, and it is sold through independent dealers.
If a non-electric softener is your top priority, Kinetico is built around it. Our dual-tank softener also delivers soft water around the clock: one tank serves the house while the other regenerates. It is installed by the owner, backed by a lifetime warranty, and built with NSF-certified components.
RainSoft dates to 1953 in Illinois. It is a brand of Aquion, which Pentair acquired in 2019. Independent RainSoft dealers handle sales and installation, and the brand offers a free in-home water test and consultation.
We start the same way, with a free in-home water test. The difference is who shows up afterward: at Honest Water NC the owner installs every system personally, with no subcontractors, and stays your contact for phone support for as long as you own it.
EcoWater traces back to 1925, when founder Lynn Lindsay patented an automatic water softener. It is part of the Marmon Group, a Berkshire Hathaway company, and sells through independent dealers. EcoWater says many of its softeners are independently certified, including by NSF, and it also makes a salt-free anti-scale line.
We offer both approaches too: a salt-based dual-tank softener for true soft water and a salt-free conditioner for lighter hardness or sodium-restricted homes. Our salt vs salt-free guide explains which fits your water.
Whichever brand you choose, these are the details that decide what you actually get.
A softener is sized to hardness times household water use. Get the reading in grains per gallon from an actual test of your water.
A metered valve regenerates only when you have used the capacity, which saves salt and water every year.
Check what the warranty covers, for how long, and who honors it if the dealer changes hands.
Ask whether the installer is the company you are buying from or a subcontractor.
Compare the total cost over the years you expect to stay in the home, not just the monthly figure.
A softener alone does not remove chloramine, iron or sulfur. Make sure the quote matches everything your test found.
They are built differently. Kinetico softeners are non-electric twin-tank units with a published 10-year warranty on Premier XP. Culligan sells through dealers who also offer rentals. Results depend on the local dealer, so compare written quotes based on a test of your own water.
Yes. Culligan's site describes month-to-month and long-term rental agreements, plus rent-to-own options, with terms that vary by dealer and area.
RainSoft is a brand of Aquion, which Pentair acquired in 2019. EcoWater is part of the Marmon Group, a Berkshire Hathaway company.
Honest Water Co systems: softeners, whole-home carbon filtration, reverse osmosis and well water treatment, built with NSF-certified components and installed by the owner, with a lifetime warranty.
Start with a free in-home water test. We show you your numbers and recommend only what your water needs.