Fleck 9100 Twin Tank Water Softener
The problem
Hard water clogs your pipes and appliances with calcium and magnesium deposits, causing limescale buildup, spotty dishes, dry skin, and shortened appliance lifespan.
Traditional single-tank softeners leave you without softened water during regeneration cycles, leading to inconvenient downtime and exposure to hard water.
For busy homes or businesses demanding constant water use, interrupted softening is unacceptable and costly.
How it works — the twin mineral tanks that fixes it
The Fleck 9100 Twin Mineral Tank system uses two parallel mineral tanks packed with ion-exchange resin that removes calcium and magnesium ions from your water, replacing them with sodium ions.
While one tank is regenerating to flush out the accumulated hardness minerals, the other tank remains online providing continuously softened water without downtime. This twin-tank design combined with meter-based regeneration optimizes salt and water use to efficiently maintain soft water all day long.
What it handles
Built for Twin softener (no downtime)
This Fleck 9100 Twin Tank Water Softener system is specifically designed for households or businesses with high water demand that cannot afford any interruption in softened water supply. The twin mineral tank design ensures one tank is always providing soft water while the other regenerates, eliminating downtime and exposure to hard water.
If you have frequent water use or rely on soft water for appliances and skin health, this system is essential. It fits seamlessly into any residential or commercial setup needing continuous, reliable softening performance.
Built on a genuine Fleck valve — not a disposable clone
This system runs on a Fleck control valve — the industry-standard brain of the system. Its parts are stocked by water dealers nationwide and stay available for decades, so a worn seal or piston is a quick, low-cost rebuild — never a throwaway. For a Twin softener (no downtime) where downtime is expensive, that serviceability is the whole point. We never build on unbranded clone heads that strand you when they fail.
Genuine, serviceable, warrantied — a system you keep for 15 years instead of replacing in four.
Product features
What it saves you
By eliminating hard water buildup, this system protects your plumbing and appliances from scale damage, reducing costly repairs and extending their lifespan.
You stop paying for bottled water, specialty detergents, and repeated appliance replacements, saving money and hassle long term.
The twin tank design ensures there is never a need to endure hard water during regeneration, avoiding damage and inconvenience that typical softeners cause.
What you’ll notice
Is this the right system for you?
- You want uninterrupted soft water 24/7
- You have high daily water consumption
- You need scale protection for appliances
- You value efficient salt and water use
- You require continuous water softening without downtime
How we compare
| Water Softener Plus | Typical online seller | |
|---|---|---|
| Money-back guarantee | 90 days, honest | 'risk-free' but 25% restocking fee |
| Pricing | Published, factory-direct | Often gated / quote-only |
| Valve | Genuine Fleck, serviceable for decades | Unbranded clone head |
| Warranty | Lifetime on tanks & valves | Limited |
| Setup | Pre-assembled & programmed to your water | Box of parts, DIY |
Buy with confidence
Honest guarantee — no hidden restocking-fee traps.
On tanks & valves — built to last.
Split it with Shop Pay at checkout.
Ready for better water?
Choose the Fleck 9100 Twin Tank Water Softener to enjoy worry-free, continuous soft water that protects your home and family every day.
Frequently asked questions
How does the twin tank design benefit me?
It ensures you always have softened water available, even during a tank’s regeneration cycle, preventing any service interruptions.
What minerals does this system remove?
It removes calcium and magnesium, which cause hard water problems like limescale buildup.
Is the system efficient in salt and water use?
Yes, meter-based regeneration activates only when needed, optimizing salt and water consumption.
Can I get expert help sizing this system?
Absolutely, Water Softener Plus offers free expert sizing help via phone to ensure perfect fit.
Does the system come with installation guides?
Yes, free install and service manuals are included for easy setup and maintenance.
Will this system improve appliance lifespan?
Yes, by removing hard minerals, it prevents scale damage and extends appliance life.
What warranty or return options are available?
Water Softener Plus provides easy returns and secure checkout for peace of mind.