Hot Water Ottawa

Navien Tankless Water Heater Installation

Navien Tankless Water Heater

We install tankless Navien water heaters in households throughout Ottawa!

If you’re looking to replace your old-fashioned combi boiler or tank heaters in your Ottawa home, installing a tankless water heater is a great option. It provides endless hot water, reduced energy consumption, and requires much less space than your old-fashioned tank systems.

Condensing tankless hot water heaters indoor ,wall hung, and have a greater working lifespan than a traditional tank. You’ll never run out of hot water again.

Hot Water Ottawa provides excellent service in the world of tankless hot water heaters. You can trust our hot water heater technicians to provide speedy and efficient installation, so get in touch today!

Navien Tankless Water Heaters

Navien systems are the #1 selling best high-efficiency condensing tankless hot water heater in North America. Offering two energy-efficient lines—NPE A2 and NPE S2—a Navien hot water heater is the proven leader in condensing tankless.

Navien NPE-A2 Series

Navien NPE-A2 Series

The Navien NPE-A2 is a smarter hot water system to keep up with today’s lifestyle. Its patented ComfortFlow® system is the first to include a buffer tank, recirculation pump, and fine-tuned controls into a tankless water heater. This resolves the undesired introduction of cold water into the hot water supply line on occasions of frequent on/off operations, as well as issues of minimal flow rates that are commonly found in other tankless water heaters.

The built-in recirculation pump allows the Navien NPE-A2 to recirculate water through existing supply lines or an external line, without the need for external pumps or controls.


All Navien NPE-A2 models can be indoor or outdoor wall hung, and supply endless hot water for a residential / commercial use.

  • NPE-180A2: Max input 150,000 btu/h
  • NPE-210A2: Max input 180,000 btu/h
  • NPE-240A2: Max input 199,900 btu/h

Navien NPE-S2 Series

Navien NPE-S2 Series

The Navien NPE-S2 is the standard ultra-high efficiency condensing tankless water heater, with higher performance and technology over traditional water heaters. This water heater is so efficient that it outperforms much larger capacity non-condensing tankless water heaters.

The Navien NPE-S2 hot water heater includes a backlit control panel that makes set up, operation, and troubleshooting a breeze.


All Navien NPE-S2 models can be indoor or outdoor wall hung, and supply endless hot water for a residential or commercial use.

  • NPE-210S2: Max input 180,000 btu/h
  • NPE-240S2: Max input 199,900 btu/h

Condensing vs. Non-Condensing Tankless Water Heaters

If you’ve been researching tankless water heater options, you’ve no doubt come across the two heat exchangers: condensing and non-condensing. All tankless water heaters sold now are condensing.

When a tankless water heater warms up the water temperature, the fuel inside creates steam or water vapour as a byproduct, which then condenses as it cools. Given time, this condensation water will corrode whatever surface it ends up on.

Older model, non-condensing tankless water heater vents the steam or vapour byproducts outside the unit in order to cool it down. While this method allows the tankless hot water heater to resist corrosion, it also means that energy is wasted. These types of units typically have around 80% efficiency, meaning that roughly 20% of the unit’s energy consumption is wasted through venting.

Condensing tankless water heaters, on the other hand, are able to recycle that extra heat. It only vents the steam or vapour when it’s no longer useful for the heating process (which is usually around 38ºC).

Because the steam that’s being vented has been cooled down significantly by going through the heating process several times, the unit requires less expensive venting materials.

Condensing tankless waters heaters are extremely efficient, which means extra energy savings for you. The eco-friendly condensing technology has a high efficiency rate around 98%—much higher than a non-condensing unit! This is why Hot Water Ottawa only provides condensing tankless water heaters to the people of Ontario.

Install a Navien Tankless Water Heater Today!

We are happy to provide our expert advice to help you determine the best tankless hot water heater for your home. High efficiency condensing tankless water heaters will provide you with endless hot water—it’s just a matter of choosing the right model for you!

Let the team at Hot Water Ottawa guide you, and help get you the best tankless water heater for your home. Talk to an expert today about your installation!

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