Proud to be CanadianStandard single-tank water softeners have one unavoidable problem - when the resin tank regenerates, soft water stops. For well water homes with higher hardness levels and higher daily demand, that interruption is noticeable and frustrating.
The Kent 4.0 Twin Demand solves this completely. Two tanks work in alternating operation - when one tank reaches capacity and begins regenerating, the other instantly takes over. The result is a continuous, uninterrupted supply of soft water throughout your home.
Designed for private well homes across Southern Ontario and the GTA.
Contact us for pricing - flexible purchase and rental plans available. Professional installation included.
The Kent 4.0 Twin Demand Water Softener is a dual-tank whole house softening system designed for private well homes. Unlike single-tank softeners that interrupt soft water supply during regeneration, the twin demand design uses two alternating resin tanks - ensuring one tank is always in service while the other regenerates. Patented ceramic disc valves provide long-term durability and corrosion resistance. Seven fully adjustable programming cycles minimize salt and water usage during regeneration. Every system includes professional installation and manufacturer warranty coverage.

Well water softening presents unique challenges that city water softeners aren't always equipped to handle. Hardness levels in private wells across Southern Ontario can be significantly higher and more variable than city water - and household demand on a well system means a single-tank softener's regeneration downtime is felt more acutely.

The Kent 4.0 Twin Demand is built specifically for these conditions.
1. Two Tanks - Uninterrupted Soft Water The defining feature of the Kent 4.0 Twin Demand is its dual-tank alternating operation. One tank is always in service softening your well water. When that tank reaches capacity, the system automatically switches to the second tank - which continues softening without any interruption. The first tank then regenerates while the second works. This cycle continues indefinitely - ensuring you never experience a period of hard water regardless of your household's water demand.
2. Patented Ceramic Disc Valves The valves at the heart of the Kent 4.0 Twin Demand feature patented ceramic discs that are both corrosion-resistant and abrasion-resistant. For well water applications - where water can carry sediment and mineral content that wears standard valve components - this is a critical advantage. Ceramic disc valves last significantly longer than standard valves and require less maintenance over the life of the system.
3. Demand-Based Regeneration Unlike timer-based softeners that regenerate on a fixed schedule regardless of actual usage, the Kent 4.0 Twin Demand regenerates based on your household's real water consumption. This means less salt, less water used during regeneration, and lower running costs - particularly important for well water homes where conservation matters.
4. High-Quality Cross-Link Resin The Kent 4.0 Twin Demand uses high-quality cross-link resin that maximizes hardness removal per regeneration cycle. For well water homes with higher hardness levels - common across Southern Ontario's rural and suburban areas - this translates to more efficient softening and fewer regeneration cycles over time.
Step 1: We test your water
Kent's team visits your home for a free professional water test. We measure your well water hardness level, assess your household usage, and recommend the right Twin Demand model size for your specific well conditions.
Step 2: We install and configure everything
Kent's licensed technicians install both tanks at your main water entry point, configure the 7-cycle programmable valve for your specific hardness level and household demand, and ensure the alternating operation is set up correctly before leaving.
Step 3: Your well water is softened, continuously
Hard well water enters Tank 1 and passes through the cross-link resin bed, where calcium and magnesium are captured and replaced with a small amount of sodium or potassium. Softened water flows to every tap, shower, and appliance in your home.
Step 4: Seamless switchover during regeneration
When Tank 1 reaches capacity, the system automatically switches to Tank 2 - which continues softening without interruption. Tank 1 regenerates using brine from the salt tank, recharging the resin for the next service cycle. The process repeats indefinitely - ensuring continuous soft water regardless of demand.

For Southern Ontario well water homeowners who have experienced the frustration of hard water interruptions during softener regeneration - or who have higher-than-average hardness levels or household water demand - the Kent 4.0 Twin Demand is a significant upgrade over a standard single-tank softener. The continuous soft water supply eliminates the most common complaint about traditional softeners. The patented ceramic disc valves provide durability that is especially valuable in well water environments where standard valve components can wear prematurely.
The demand-based regeneration reduces ongoing salt costs. And the 7-cycle adjustable programming ensures the system is precisely configured for your specific well conditions - not a generic setting that over-treats or under-treats your water. For well water homes where soft water quality and consistency matter, the Twin Demand is the most reliable whole house softening solution Kent offers.
System Specifications
| System Size | Draw Rate | Slow Rinse Rate | Brine Refill Rate | Backwash/Fast Rinse Rate |
|---|---|---|---|---|
| 9x48 | 0.56 gpm | 0.34 gpm | 0.30 gpm | 2.02 gpm |
| 10x44 | 0.56 gpm | 0.34 gpm | 0.39 gpm | 2.86 gpm |
| 10x54 | 0.56 gpm | 0.34 gpm | 0.39 gpm | 2.86 gpm |
| 12x52 | 0.84 gpm | 0.44 gpm | 0.83 gpm | 4.22 gpm |
Additional sizes available. Multi-flow control options available.
Electrical / Operational Specifications
| Control Valve | Working Conditions | ||
|---|---|---|---|
| Transformer Input | 100-240VAC / 50-60Hz | Water Pressure | 20 - 120 psi |
| Transformer Output | 12VDC / 2A | Water Temperature | 35°F - 125°F |
| Valve Wattage | 24W | pH Level | 7.5 ± 0.5 |
Control Valve Parameters
| Inlet | Outlet | Drain | Brine | Base | Riser Tube | Hard Water Bypass |
|---|---|---|---|---|---|---|
| 1" | 1" | 1/2" Barbed | 3/8" | 2.5" - 8NPSM | 32mm | Yes |
Additional Specifications
| Valve Material | Tank Material | Valve Height From Top of Tank | Meter Accuracy | Clock |
|---|---|---|---|---|
| Noryl® Plastic | Fiberglass | 7" / 180mm | ±5% | 12- or 24-hour |
The right system size is selected based on your well water hardness level, household size, and daily water usage - determined during your free professional water test before installation.
This system may be the right choice if:
For complete well water treatment, this softener is often combined with:
A free water test helps determine the right combination for your specific well.

The Kent 4.0 Twin Demand Water Softener is available through flexible purchase and rental options. Contact our team for pricing based on your specific well water conditions and system requirements.
Schedule a Free Water TestJoin Southern Ontario well water homeowners who trust Kent for reliable, professionally installed water treatment.