Proud to be CanadianHard water is quietly costing you money every day - in scale-damaged appliances, excess detergent, spotted dishes, and dry skin after every shower. The Kent 4.0 High-Efficiency Water Softener removes the hardness minerals causing all of it, while using significantly less salt and water than conventional softeners.
The result is soft water at every tap, shower, and appliance in your home - with lower running costs over the life of the system.
Designed for city water homes across Southern Ontario and the GTA.
From $29.95/month - flexible purchase and rental plans available. Professional installation included.
The Kent 4.0 High-Efficiency Water Softener is a whole house water softening system designed for city water homes across Southern Ontario. It removes hardness minerals like calcium and magnesium at the main water entry point - delivering soft water to every tap, shower, and appliance in your home. Unlike conventional softeners, the Kent 4.0 uses advanced demand-based regeneration and high-quality cross-link resin to minimize salt and water usage per cycle - reducing running costs without compromising on softening performance. Every system includes professional installation and a 20-year manufacturer warranty.

Most conventional water softeners regenerate on a fixed timer whether your household needs it or not. That means unnecessary salt usage, wasted water, and higher running costs month after month.

The Kent 4.0 works differently.
Advanced Demand-Based Regeneration: The Kent 4.0 uses intelligent metering with upflow regeneration monitoring your actual household water usage and only regenerating when your resin tank genuinely needs it. This means less salt, less water, and lower running costs over the life of the system without any compromise on softening performance.
High-Quality Cross-Link Resin: The Kent 4.0 uses high-efficiency cross-link resin that delivers maximum hardness removal per regeneration cycle. This means fewer regeneration cycles, longer resin life, and consistent soft water performance even in areas of Southern Ontario with high hardness levels above 10 gpg.
Advanced Programmable Valve: The ceramic disc valve at the heart of the Kent 4.0 is built for long-term durability and corrosion resistance. With 7 fully adjustable cycles and an LCD digital display, the system can be configured precisely for your specific water hardness level and household demand ensuring optimal performance without over-treating or under-treating your water.
Automatic Power Outage Memory: A 72-hour backup memory ensures your settings and programming are retained even during a power outage so your system picks up exactly where it left off without manual reprogramming.
Step 1: We Test Your Water
Kent's team visits your home for a free professional water test. We measure your water hardness level, assess your household usage, and recommend the right Kent 4.0 model size for your specific city water conditions.
Step 2: We Install Everything
Kent's technicians install the softener at your main water entry point, configure the 7-cycle programmable valve for your specific hardness level and household demand, and ensure the system is fully operational before leaving.
Step 3: Your Water Is Softened
Hard city water flows through the high-efficiency resin tank, 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: The System Manages Itself
The Kent 4.0 monitors your actual water usage and regenerates only when needed - automatically. The LCD display keeps you informed, and the 72-hour power backup ensures nothing is lost during an outage.

For Southern Ontario city water homeowners who want reliable, efficient water softening without the premium of a smart system, the Kent 4.0 is a strong long-term investment. The GTA and surrounding regions typically experience water hardness between 7 and 12 gpg - hard enough to cause visible scale, appliance wear, and daily discomfort, but consistent enough that a well-configured high-efficiency softener handles it reliably without needing smart monitoring features. The advanced demand-based regeneration reduces ongoing salt and water costs compared to conventional softeners, and the 20-year manufacturer warranty means you're protected for the long term. For most city water homeowners in Southern Ontario, the Kent 4.0 represents the ideal balance of performance, efficiency, and value.
| What matters to you | Kent 4.0 High-Efficiency | Conventional Softeners |
|---|---|---|
| Removes hard water minerals | ||
| Demand-based regeneration | mostly | |
| Demand-based regeneration | ||
| High-efficiency cross-link resin | ||
| Ceramic disc valve | ||
| 7 adjustable cycles | ||
| LCD digital display | ||
| 72-hour power backup memory | ||
| 20-year warranty | Varies | |
| Professional installation | Varies |
System
| Specification | Details |
|---|---|
| Available Sizes | 9x48, 10x44, 10x54, 12x52 |
| Flow Rate | 16 to 20 gpm (size dependent) |
| Draw Rate | 0.56 to 0.84 gpm (size dependent) |
| Slow Rinse Rate | 0.34 to 0.44 gpm (size dependent) |
| Brine Refill Rate | 0.30 to 0.83 gpm (size dependent) |
| Backwash/Fast Rinse Rate | 2.02 to 4.22 gpm (size dependent) |
Electrical
| Specification | Details |
|---|---|
| Transformer Input | 100-240VAC / 50-60Hz |
| Transformer Output | 12VDC / 2A |
| Valve Wattage | 24W |
| Water Pressure | 20-120 psi |
| Water Temperature | 35°F - 125°F |
| pH Level | 7.5 ± 0.5 |
Control Valve
| Specification | Details |
|---|---|
| Inlet/Outlet | 1" |
| Drain | 1/2" Barbed |
| Brine | 3/8" |
| Base | 2.5" - 8NPSM |
| Riser Tube | 32mm |
| Hard Water Bypass | Yes |
Miscellaneous
| Specification | Details |
|---|---|
| Valve Material | Noryl® Plastic |
| Tank Material | Fiberglass |
| Valve Height From Top Of Tank | 7" / 180mm |
| Meter Accuracy | ±5% |
| Clock | 12- or 24- hour |
The right model size is selected based on your water hardness level, household size and daily water usage - determined by your free professional water test before installation.
The Kent 4.0 High-Efficiency Water Softener may be the right choice if:
Kent Water Purification Systems serves Southern Ontario homeowners with professional water treatment solutions across the GTA, Halton, Durham, Peel, York, and Waterloo regions. Every system is professionally installed by licensed technicians and backed by ongoing service and maintenance support. Kent specializes in properly sized water softeners and filtration systems based on real water test results not one size fits all packages. With hundreds of five star reviews from homeowners across Southern Ontario, Kent is a trusted name in home water treatment.
The Kent 4.0 High-Efficiency Water Softener is available through flexible options - so you can get reliable whole house soft water without compromising on quality.

Best for: Combined filtration and softening in one system

Best for: Whole home filtration to complement your softener
Choosing the right water softener starts with understanding your water. Our team helps homeowners across Southern Ontario and the Greater Toronto Area find solutions that fit their needs and budget.