Skip to content
  • Not sure which system fits your water? Book a free home assessment with Water Doctor.
  • Need replacement filters or UV lamps? Shop maintenance essentials online.
Free Assessment Water Hardness Check
Log in
  • RO Systems hot
  • Water Softeners
  • Whole-Home
  • Replacement Filters
    • RO Faucets
  • Services
  • Best Sellers
  • Support
    • FAQ
    • Warranty
    • Terms of Service
    Water Doctor Canada Inc.
    • hot RO Systems
    • Water Softeners
    • Whole-Home
    • Replacement Filters
      • RO Faucets
    • Services
    • Best Sellers
    • Support
      • FAQ
      • Warranty
      • Terms of Service
    Log in $0.00 Total $0.00 in cart
    • Home
    • Collections
    • Best Sellers

    Best Sellers

    Fast shortlist

    Popular systems, not final answers. Start with expert help if you want the right fit faster.

    Book Free Assessment
    Talk to Water Doctor
    Filter
    5 products
    • Water Doctor Scale-Shield single-tank water softener Water Doctor Scale-Shield single-tank water softener

      Water Doctor Scale-Shield | Eliminates Hard Water & Scale Buildup | Single-Tank Water Softener

      Water SoftenerConditioner · 2
      Regular price From $1,499.99 CAD
      View details →
    • Water Doctor Chlorine Removal Vertical Twin Tank Water Softener Water Doctor chlorine removal vertical twin tank water softener

      Water Doctor Chlorine Removal Vertical Twin Tank Water Softener

      Water SoftenerControl Head · 1
      Regular price $2,099.99 CAD
      View details →
    • Water Doctor COMO-R1000 Tankless RO System Water Doctor COMO-R1000 Tankless RO System

      Water Doctor COMO-R1000 Tankless RO System

      RO System
      Regular price $1,499.99 CAD
      View details →
    • Water Doctor 4-stage undersink reverse osmosis system Water Doctor 4-Stage Undersink RO System
      Sale!

      Water Doctor 4-Stage Undersink RO System

      RO System
      Sale price $799.99 CAD Regular price $899.99 CAD
      View details →
    • Water Doctor Guardian | Protects Appliances & Equipment from Sediment | Customizable Pre-Filter Systems Water Doctor Guardian whole-house sediment pre-filter system Water Doctor Guardian whole-house sediment pre-filter system Water Doctor Guardian whole-house sediment pre-filter system

      Water Doctor Guardian | Protects Appliances & Equipment from Sediment | Customizable Pre-Filter Systems

      Water TreatmentColor · 2
      Regular price From $170.00 CAD
      View details →
    • About Water Doctor
      • Our Story
      • Careers
      • Blogs
      • Site Map
      About Water Doctor
      • Our Story
      • Careers
      • Blogs
      • Site Map
    • Support
      • Contact us
      • Water Assessment
      • Shipping, Refunds & Returns
      • Warranty Terms
      • Subscribe & Save
      • FAQs
      Support
      • Contact us
      • Water Assessment
      • Shipping, Refunds & Returns
      • Warranty Terms
      • Subscribe & Save
      • FAQs
    • Contact Us
      info@waterdoctor.ca
      +1 289-748-9666

      Water treatment systems, replacement parts, and expert support for homes and businesses.

    Payment methods
    • American Express
    • Apple Pay
    • Diners Club
    • Discover
    • Google Pay
    • Mastercard
    • PayPal
    • Shop Pay
    • Visa
    © 2026, Water Doctor Canada Inc. All rights reserved.
    • Privacy policy
    • Terms of service
    • Refund policy
    • Shipping policy
    Canada TOP
    Popular searches
    Water Softener all-in-one softener Symphony Symphony Lite Replacement Filters
    View cart

    Your cart is empty

    Choose the path that matches what you came to buy.

    Shop Best Sellers Shop Replacement Filters Not sure? Use Help Me Choose
    Have an account?
    Log in to check out faster.
    View details
    Are you sure?
    • Choosing a selection results in a full page refresh.
    • Opens in a new window.