1 / 1
Water Doctor

Water Doctor GF3 800GPD RO System

$799.99 CAD $949.99 CAD
16% off
SKU: WD-GF3
Upgrade your home water system with the 800 GPD RO System – designed for families who want clean, safe water without the wait. No More Waiting – Delivers up to...

In stock and ready to ship

Water Doctor GF3 800GPD RO System
$799.99 CAD

Before you choose a drinking-water system

Compare flow rate, storage style, and filter maintenance with Water Doctor if you are not fully sure this is the right RO system for your household.

Get Drinking Water Advice Talk to Water Doctor

If you are still diagnosing the problem, use one of these tools before you commit to checkout.

Water Diagnosis Check Water Hardness Rule out a whole-home hardness problem before solving only the drinking-water tap. Guided Selection Help Me Choose Use the guided path to compare RO, whole-home filtration, and hardness-led next steps.
Estimated delivery: May 31 - Jun 04
Pairs well with
Payment and security

Your payment information is processed securely.

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa
View details

Upgrade your home water system with the 800 GPD RO System – designed for families who want clean, safe water without the wait.

No More Waiting – Delivers up to 800 gallons per day, meeting the needs of any household.

Fast Water Output – Fill a glass in just 5 seconds with a high flow rate of 0.8 GPM (≈3.0 L/min).

Multi-Layer Filtration – Advanced filter design ensures healthier, better-tasting water for your family.

High Efficiency (3:1 Ratio) – Produces up to 72% pure water, cutting down on wastewater and saving resources.

No Power Needed – Runs without external electricity, equipped with a self-developed pressure pump for stable, energy-free operation.

Enjoy fresher, safer, and faster water right from your tap — all in one compact system.
Color pattern Navy
1 / 1
Press & drag to view

  • Free Assessment

    Confirm fit before you order the wrong system or replacement part.

  • Installation Planning

    Talk to Water Doctor about setup, compatibility, and service expectations.

  • Shipping and Support

    Order online with a clear path to support before and after delivery.

  • Replacement Ready

    Keep maintenance, filters, and UV lamp replacements simple over time.

    Buy with more confidence

    Water Doctor is strongest when product, installation, and maintenance are treated as one system.

    • Confirm the Right Fit

      Match this product to your water problem, household size, and plumbing setup before checkout.

      Book Free Assessment

    • Plan Installation

      Check access, service area, and installation timing so there are no surprises after purchase.

      Talk to Water Doctor

    • Think About Maintenance

      Replacement filters, UV lamps, and long-term care should be part of the buying decision from day one.

      Shop Replacement Filters
    Before you order

    Need help confirming fit, installation, or maintenance?

    Water Doctor can help you verify whether this product matches your water problem, installation setup, and replacement schedule before checkout.
    Book Free Assessment Talk to Water Doctor
    After purchase support

    Keep performance high with the right replacement and service plan.

    Water treatment performance depends on timely maintenance. Save your model details, set replacement reminders, and use Water Doctor support when unsure about cartridges, UV lamps, or service intervals.
    Shop Replacement Filters Contact Support

    Technical Resources

    File Size Date Download
    		Mb Download
    		Mb Download
    		Mb Download

    Replacement and maintenance essentials

    Keep filters, UV lamps, and ongoing maintenance items easy to reorder.
    View all

    Related Products

    Recently viewed

    Still looking for another product or replacement part?