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TANKLESS WATER HEATER CALGARY: Installation, Repair, and Replacement SERVICES

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Install New Tankless Water Heater Today With Comfort Union

Blocking the unnecessary flow of expenses by switching to machines that prioritize high efficiency is undoubtedly a smart move. And that’s especially true with tankless water heaters that you might’ve heard of as “on-demand” or “instant hot water heaters.” Yes, the installation cost of a tankless water heater in Calgary ranges typically from $4,900 to $6,900 but it’s a one-time investment that can save thousands in energy savings each year, unlike those big storage tanks that use constant energy to keep your water hot all the time, even when you’re not using it. Tankless water heaters have a longer lifespan than tank water heaters, around 15-20 years and provides us with an endless supply of hot water—whenever we want! These tankless systems often come with a space-saving design that looks elegant and fits in virtually any space. And just like other machines in our home, tankless water heaters also demand maintenance and repair service from time to time. Sometimes the cost of repair or maintenance could be as little as $75 and other times the service of tankless water heaters requires about $600 or more. So if you want to upgrade to a more energy-efficient tankless system or need to fix your current one, Comfort Union has you covered. Our tankless water heater services in Calgary are designed to provide you the best we can: from removing pay-per-hour pricing models to offering high-quality branded parts—we make sure that your hot water flow is steady and reliable all year long. Install new tankless water heater today and enjoy your endless warm showers

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Schedule for hot water tank repair Calgary

How Tankless Water Heaters Work?

Tankless water heaters function by heating water on demand. When a hot water tap is turned on, a flow sensor activates the heater, heating the water directly as it flows through the device. In gas-fired units, a burner ignites, transferring heat to the water through a heat exchanger. Therefore, tankless water system only fire when in use.

  • Space Efficiency: Compact and wall-mounted, taking up less space than traditional hot water tanks.
  • Safety: Lower risk of leaks and explosions, with precise temperature control.
  • Longevity: Gas units can last over 20 years, electric water heater units around 7 to 10 years.
  • Energy Efficiency: Heat water only when needed, potentially saving on energy costs that help lower utility bills.
  • High Initial Cost: Higher upfront cost for the unit and installation compared to traditional heaters.
  • Maintenance Requirements: Regular maintenance needed to prevent mineral buildup and common issues such as low water pressure. 

Tankless hot water heaters offer benefits such as efficiency, space-saving, and safety. However, they come with higher upfront costs and require yearly maintenance. Understanding these aspects can help make an informed decision when considering a new tankless water heater.

Noritz EZ111 Tankless Water Heater Calgary

The Noritz EZ111 is a high-efficiency, condensing tankless water heater, engineered specifically for the North American residential market. It is designed to simplify the process of a new tankless water heater installation and reduce costs, especially when replacing other tankless water heater with larger and traditional storage tank type units. This model is part of the EZ Series of tankless water heater right from Noritz and is noted for its range of features that make it the best tankless water heater with minimal maintenance.

  • Uniform Energy Factor: The model boasts a 0.96 Uniform Energy Factor, indicating high energy efficiency.

  • Gas Consumption: It has a wide range of gas consumption, from a minimum of 18,000 BTUh to a maximum of 199,900 BTUh.

  • Flow Rate: The capacity range for the EZ111 is quite extensive, varying from 0.5 to 11.1 gallons per minute (GPM), which makes it suitable for various household sizes and hot water needs.

  • Dimensions: Both the indoor and outdoor units have dimensions of 27.0″ (height) x 18.5″ (width) x 14.1″ (depth) and weigh 81 lbs.

  • Top-Mounted Water Connections: This design feature allows for easier and quicker reconnection of water lines, especially when replacing a previous tank heater.

  • Wi-Fi Capability: It is compatible with the Noritz Connect app, enabling wireless remote control of the water heater’s functions and providing diagnostic and maintenance reminders.

  • Dual Heat Exchanger: The unit includes two stainless steel heat exchangers, offering greater resistance to corrosion and scale buildup, thereby enhancing the longevity of the system.

  • Heat Exchanger Warranty: 25 years without recirculation, and 15 years with recirculation when using an Aquastat.

  • Parts Warranty: 5 years.

  • Labor Warranty: 1 year.

Pricewise, the Noritz EZ111 is positioned as a premium product in the tankless hot water heater market.

Noritz is known for its commitment to technological innovation and quality customer service, offering a range of tankless hot water tanks and water heater solutions that cater to different needs, including high-efficiency (Eco-tough), durability-engineered (Pro-tough), and affordable and reliable (Value solutions) tankless hot water heaters.

For installation, it’s recommended to use professional technicians and qualified installers, especially for residential applications. The model is equipped with safety features like flame sensors, overheat prevention devices standby heat loss,, and freeze protection, ensuring reliable and safe operation.


The Noritz EZ111 tankless hot water tank heater presents a combination of efficiency, innovative features, and durability, making it a considerable option for those looking to upgrade their home’s own traditional, hot water heater tanks and heater system.

Rinnai Sensei Series Tankless Hot Water Heaters

The Rinnai Sensei tankle hot water tanker heater and install tankless water heaters offer a range of features designed for efficiency, convenience, and longevity. These units are built to commercial-grade standards and undergo individual quality testing, ensuring reliable performance.

  • Efficiency: The Rinnai Sensei series is ENERGY STAR® certified, reflecting its high energy efficiency. Models like the RU199iN have a Uniform Energy Factor (UEF) of 0.95, indicating efficient energy usage.
  • Performance: These heaters are capable of delivering a high flow rate, with some models offering up to 11 gallons per minute (GPM), making them suitable for larger homes or simultaneous uses at multiple fixtures.
  • Flexible Installation Options: The compact design of the series allows for versatile installation options, including indoor, outdoor, garage, closet, and mobile home installations. The series also provides a variety of venting options to accommodate different installation requirements.

  • Professional Installation Recommended: Professional installation is advised to ensure optimal performance and compliance with warranty terms.
  • Intelligent Features: The series includes models with the Smart-Circ™ Intelligent Recirculation™ technology, which tracks hot water usage and adjusts recirculation patterns accordingly. This feature ensures hot water is readily available when needed.

  • Wi-Fi Capability: With Wi-Fi readiness and compatibility with the Rinnai control-r™ module, users can remotely control the heater, adjust temperature settings, and receive error codes or maintenance reminders through the Rinnai app.

  • Safety Features: Built-in safety mechanisms include Flame Failure protection, Boiling Protection, Combustion Fan RPM Check, and Automatic Frost Protection, ensuring safe and reliable operation.

  • Environmentally Friendly: With ultra-low NOx emissions, the series meets stringent air quality standards and is approved by the South Coast Air Quality Management District.
  • Heat Exchanger Warranty: 15 Years

  • Parts Warranty: 5 Years

  • Labor Warranty: 1 Year

There’s also an option to extend the labor warranty for an additional period.

Prices for the Rinnai Sensei series vary depending on the specific model and features. For example, the Rinnai RSC160IP model offers a blend of performance and value.


The Rinnai Sensei series hot water tanks stands out for its mix of high efficiency, intelligent technology, and flexible installation options, making it a solid choice for those seeking a reliable and advanced tankless water heating solution.

Comfort Union Service Areas

We cover a wide stretch of territory, including Calgary and surrounding towns. If you don’t see your location on the list below, call us to find out if we can help you.

  • Airdrie
  • Bearspaw
  • Black Diamond
  • Bragg Creek
  • Calgary
  • Chestermere
  • Cochrane
  • Elbow Valley Estates
  • Heritage Pointe
  • High River
  • Okotoks
  • Priddis
  • Spring Bank
  • Turner Valley


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We're Just One Phone Call Away for Your Tankless Water Heaters Calgary Services:

Contact Comfort Union for all your tankless water heater and plumbing system needs in Calgary, from installation and maintenance to expert advice and repairs. We’re here to ensure your home has the right tankless water heater for a reliable and endless hot water supply.

We Are Available 24/7

Schedule for hot water tank repair Calgary

Tankless Water Heaters FAQs

How much does it cost to install a tankless water heater in Calgary?
The cost for installing a tankless hot water heater here in Calgary typically ranges from $4,900 to $6,900 with installation and full guarantees and can save customers thousands in energy savings each year. This estimate can vary based on the complexity of the installation and the specific unit chosen​​​​.
Are tankless water heaters worth the investment?
Yes, tankless water heaters are considered a good investment for many homeowners. They provide hot water on demand, are more energy-efficient, and have a longer lifespan compared to traditional tank water heaters, often lasting 15-20 years ​​if properly maintained and used.
Do tankless water heaters require special maintenance?
Yes, regular maintenance is important for tankless water heaters. This includes descaling to remove mineral buildup and periodic checks of the heating elements, filters, and overall hot water system and performance to ensure efficient operation.
Can a tankless water heater supply enough hot water for a large household?
Tankless water heaters are capable of supplying hot water for a large household, but it’s important to choose a tankless heaters with a unit with an appropriate gallon-per-minute (GPM) flow rate to meet the simultaneous hot water demands of the household.
Can I replace my traditional tank water heater with a tankless unit?
Yes, you can replace a traditional tank water heater with a tankless unit. However, it may require some modifications to your home’s plumbing and electrical or gas systems to accommodate the new tankless water heater maintenance.
How does a tankless water heater save energy?
Tankless water heaters are energy-efficient because they only heat water on demand, unlike traditional tank heaters that continuously heat and reheat the supply of hot water throughout, leading to energy waste.
What factors should I consider when choosing a tankless water heater?
Consider the fuel- old water heater type, unit size and capacity, energy efficiency ratings, installation costs, and brand reputation when selecting a tankless water heater.
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