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Navien Tankless Water Heaters

Navien LogoNavien tankless water heaters are incredibly popular for 2 main reasons: they’re highly energy efficient AND they are truly dependable. In fact, we get the fewest service calls about Naviens of any tankless water heater brand.

You can browse through our models below, and we also provide an expert consultation service to make sure you’re getting a water heater that will meet your needs long term. It’s all backed up by our 100% satisfaction guarantee.

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Why Buy a Navien?Navien Tankless Water Heater

The Naviens we carry all come with these great features, no matter which model you buy:

  • No need to upgrade your gas line. Naviens use the same ½” gas lines that your existing water tank uses.
  • Condensing technology gives you maximum efficiency – waste heat is reclaimed and reused to heat water.
  • Because very little heat escapes the unit, conventional PVC pipe (2” diameter) can be used for venting (runs can be up to 60 feet).
  • Easy to install and service.
  • Mounts to a wall to take up less floor space in your basement or utility area.
  • Can be linked together to supply very large water demands.
  • Two stainless steel heat exchangers resist corrosion better than copper – and also resist hard water scale buildup better too.
  • Eligible for energy efficiency rebates – ask your Ottawa Home Services consultant which ones are on now.
  • Will not flood your basement – designed to completely shut off the water supply in the event of a problem.
  • Excellent warranty coverage:
    • 15 years on the heat exchanger
    • 5 years on other parts and components.
    • Please note that the warranty is only valid when you buy your Navien from a professional installer like Ottawa Home Services.

Our Navien Tankless Models

Here are some of the key specifications for the individual models we carry. Please consult with one of our experts to ensure you’re getting the right model for your water usage patterns.


Model NPE-210A2 NPE-240A2
Efficiency 97% AFUE 95% AFUE
Energy Star Qualified Yes  Yes
Gas Input 19,900 – 180,000 BTU/hour 19,900 – 199,000 BTU/hour
Flow Rate Up to 10.1 GPM Up to 11.2 GPM
NOx Emissions Very low: ≤ 20 PPM Very low: ≤ 20 PPM
Rent $46.06/month $50.15/month
Price $4,241.73 + HST $4,492.33 + HST

Download the brochure for all models >


Technical Terms Used in the Chart Above

AFUE, or Annual Fuel Utilization Efficiency

This is the percentage of fuel that is converted to heat used to warm up your water. The highest numbers are better.

Flow Rate

How much hot water can be produced in gallons per minute and litres per minute. This will depend on the desired temperature.


This stands for two compounds: nitric oxide and nitrogen dioxide. While they are natural products of combustion, they must be safely vented. As they are also pollutants, Navien tries to keep NOx emissions to a minimum to comply with Canada’s reduction strategy. They are measured in PPM or parts per million.

Tankless Water Heaters Are Right for You

Checkmark in a circleYou’ll find you love tankless water heaters if:

  1. You’re frequently running out of hot water.
  2. You’re not home during the day and/or travel a lot for work, and don’t want to pay for heat you’re not using.
  3. You’re planning to stay in your home for many years. You’ll be able to enjoy the energy efficiency savings, especially once they cover the initial cost of the water heater.
  4. You have a small home, and want to save space that a water tank would fill.

Read our comparison of water tanks vs tankless water heaters >

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Expert Sales,  Expert Installations

100 Percent Satisfaction GuaranteedYou’ll enjoy working with Ottawa Home Services from sales to post-installation follow-up service.

  • Our sales consultations are tailored to getting you the right water heater, not the most expensive one.
  • You have lots of time to make your decision. Our price quotes detail everything you need to know, and stay valid for 30 days.
  • Our expert installers are fully licensed and certified. They’re friendly too! They’ll answer any questions that you may have, and they’ll even clean up the area before they go.

We work hard to make sure you’re going to be happy with your water heater. We even provide a 100% satisfaction guarantee: if your water heater doesn’t perform as expected, we’ll return and fix it. If needed, we’ll even replace it with a comparable model.

To get expert guidance on the right water heater for your needs, ask for your free quote.


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