• Water Doctor COMO-R700 tankless reverse osmosis system
Water Doctor

Water Doctor COMO-R700 Tankless RO System

$1,199.99 CAD
SKU: CM-R700
Compact tankless RO system for everyday drinking waterThe Water Doctor COMO-R700 Tankless RO System is a compact undersink reverse osmosis system built for daily home use. It is a good...

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Water Doctor COMO-R700 tankless reverse osmosis system
$1,199.99 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.

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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: Jun 25 - Jun 29
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Compact tankless RO system for everyday drinking water

The Water Doctor COMO-R700 Tankless RO System is a compact undersink reverse osmosis system built for daily home use. It is a good fit for customers who want a tankless RO setup with strong flow, a clean cabinet layout and simple cartridge maintenance.

Best for

  • Households that want better-tasting drinking water from the kitchen tap
  • Customers upgrading from bottled water or pitcher filters
  • Kitchens where a storage tank takes up too much space
  • Homes that want a balanced tankless RO option below the R1000 model

Key benefits

  • 700 GPD tankless RO design for steady daily use
  • Space-saving undersink system with no separate storage tank
  • Fast direct drinking water flow for cups, kettles and cooking
  • Easy cartridge replacement with compatible COMO-R700 filters
  • Modern design for a cleaner kitchen installation

Maintenance

Replace the PCB and RO cartridges with genuine Water Doctor COMO-R700 replacement filters. Actual replacement timing depends on household usage and source water conditions.

Installation note

Professional undersink installation is recommended, especially when adding a dedicated faucet or connecting the system to an existing kitchen setup.
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  • Replacement Ready

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

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

    • Confirm the Right Fit

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    • Think About Maintenance

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

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    Before you order

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    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.
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