Water hardness is caused by dissolved calcium and magnesium — completely natural, completely safe, but problematic for plumbing and appliances. Hard water deposits scale inside water heaters (reducing efficiency and shortening lifespan), narrows pipes over time, leaves spots on glassware and fixtures, makes soap and shampoo less effective, and makes laundry stiffer.
A water softener removes calcium and magnesium through ion exchange — the hard minerals are swapped for sodium ions on the resin bed inside the softener. Periodically the resin is regenerated with a brine solution, flushing the captured minerals to drain and recharging the resin.
The result is water that lathers well, rinses cleanly, and doesn't leave scale anywhere.
Common signs you need this service
- White scale on faucets, showerheads, and glassware
- Soap and shampoo doesn't lather well
- Soap-scum film in showers and tubs
- Laundry feels stiff or dull
- Water heater is louder than it used to be (scale accumulation)
- Reduced flow at fixtures over time (scale narrowing pipes)
Salt-based vs salt-free
Salt-based ion-exchange softeners are what most people mean by 'water softener' — they actually remove hardness minerals and produce soft water. Salt-free 'conditioners' or 'descalers' don't remove minerals; instead, they convert calcium and magnesium into a crystalline form that's less likely to stick to surfaces. They reduce scale formation but they don't soften — laundry won't feel different, soap won't lather better, glassware will still spot. For homes that want true softening, salt-based is the answer. Salt-free has a place when sodium intake is a medical concern and the goal is just scale reduction.
Sizing the system
Softener sizing is measured in grains of hardness capacity per regeneration cycle. A typical sizing target is enough capacity for 5-7 days between regenerations. The calculation: household size × daily water use × hardness in grains per gallon. A four-person household using 75 gallons per person per day with 12 GPG hardness needs 4 × 75 × 12 × 7 = 25,200 grains per week — a 32,000-grain softener with weekly regeneration. Larger systems regenerate less frequently and use salt more efficiently. Smart demand-based controllers measure actual water use and regenerate only when needed, which is more efficient than time-based regeneration.
The unsoftened tap consideration
Softened water has a small amount of sodium added (from the ion exchange) — usually well below taste threshold for most people but not zero. There are also a few uses where unsoftened water is preferred: outdoor hose bibs (don't soften your lawn watering — wasteful and the plants don't care), and the kitchen cold tap if you want unsoftened drinking water (or pair the softener with an RO at the kitchen tap, which is what we usually recommend). We plumb installs so the softener treats hot water and most cold water, with the outdoor bibs and optionally the kitchen cold tap on the unsoftened branch.
Salt usage and maintenance
A typical residential softener uses 30-80 lb of salt per month, depending on hardness and water use. Solar salt pellets are the most common — bagged from any big-box or grocery store. Higher-purity salt (Diamond Crystal Solar Naturals or similar) reduces bridging and crud accumulation in the brine tank. Once a year, we recommend a brine tank cleaning and resin bed inspection — usually 30 minutes of service.
Impact on water heaters
The single biggest indirect benefit of a water softener is the lifespan and efficiency of your water heater. Hard water scales the inside of a water heater tank and the heating elements — scaled water heaters use more energy, are noisier, and fail years sooner. A softener can easily extend water heater life by 5-7 years and reduce water heating cost by 10-15%. If you're already at the point of replacing a water heater, a softener pays for itself partly through extending the next water heater's life.
Our process
- 1
Test the hardness
We measure your actual hardness in grains per gallon (GPG) — recommendations depend on the number.
- 2
Size the system
Softener sizing balances household demand, regeneration frequency, and salt efficiency.
- 3
Install at the main
Installed downstream of the meter, upstream of the water heater. By-pass loop included.
- 4
Commission and program
Initial regeneration, program the controller for your water and schedule, instruct on salt refills.
What's included
- Water hardness test
- System sizing and selection
- Installation with by-pass loop
- Initial fill, regeneration, and programming
- Owner walkthrough
What affects the price
System capacity
Smaller (24,000-32,000 grain) for small households; larger (48,000-64,000 grain) for high-use households.
Salt vs salt-free
Salt-based ion-exchange softeners actually soften (best results). Salt-free 'conditioners' reduce scale formation but don't soften — they're a different product.
Smart controller features
Wi-Fi connectivity, demand-based regeneration, and salt-level alerts cost more but reduce service calls and salt usage.
Why Kanata homeowners choose us
- We test before sizing — no guess-based installs
- We install with a by-pass loop so future service doesn't require shutting off your house
- Plumbed correctly so you have a softened-water tap and an unsoftened-water tap (outside hose, fridge water — see explanation below)
- We do annual service and salt-delivery coordination for customers who want it
City of Ottawa water (which Kanata is on) typically tests around 7-12 grains per gallon — moderately hard. Rural Kanata, Carp, and Stittsville well water often tests 18-35+ GPG — significantly harder. Both benefit from softening; the rural systems make a more dramatic difference.
Materials & brands we trust
- Kinetico (non-electric)
Premium non-electric softeners with twin-tank design — no power, no timer, demand-only regeneration.
- Water-Right Impression Plus
Smart, efficient, fair price.
- Fleck 5810/5812 controllers
Industry-standard electronic controllers with excellent reliability.
Installed per OBC with code-compliant drain connection (the regeneration cycle discharges brine — needs a proper air gap to a floor drain or laundry standpipe). Lead-free brass fittings on all wetted parts. Bypass loop allows isolation for service.
Softener installation is possible for an experienced DIYer who has done plumbing before and is comfortable cutting into the main supply. Sizing is the most common DIY mistake — an undersized softener regenerates constantly (high salt usage, premature failure); an oversized softener regenerates infrequently (the resin loses efficiency between cycles). Professional sizing is worth the difference.