Brand Authorised Navien Technicians

Navien Tankless Water Heater Repair & Installation

If you rely on a Navien tankless water heater for a consistent supply of hot water in your home in Toronto, you understand the importance of having it in perfect working condition. A malfunctioning tankless water heater can disrupt your daily routines and comfort, which is why it’s crucial to have a trusted expert for Navien tankless water heater repair and installation, and here is where Smile HVAC comes in.

TSSA Contractor

TSSA Contractor

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Best Rated

Best Rated

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Honest Prices


Full Warranty

Full Warranty

All repairs are covered

Why SmileHVAC for Navien Tankless Water Heater Services

SmileHVAC is your premier choice for Navien tankless water heater repair and installation services in Toronto. Here’s why you can rely on us:

  • Certified Navien Technicians: Our team consists of certified technicians who are authorized by Navien to handle their products. This means that we have received specialized training and possess in-depth knowledge of Navien tankless water heaters, ensuring that we can diagnose issues accurately and perform repairs or installations to the highest standards.
  • Prompt and Local Service: As a local HVAC service provider, we understand the importance of timely assistance. When you contact SmileHVAC, you can expect prompt responses and quick service to address your Navien tankless water heater needs. We are committed to keeping your hot water flowing.
  • Comprehensive Repairs: Our technicians are equipped to handle a wide range of Navien tankless water heater problems, from issues with ignition and heating to addressing leaks and ensuring proper airflow. We diagnose and resolve problems comprehensively to restore your unit’s optimal performance.
  • Energy Efficiency: Navien tankless water heaters are known for their energy efficiency. Our repair and maintenance services are designed to ensure that your unit operates efficiently, helping you save on energy costs and reduce your environmental footprint.
  • Safety First: Safety is paramount when dealing with water heaters. Our certified technicians prioritize safety during repairs and installations, minimizing the risk of accidents and water damage in your home.

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Common Navien Tankless Water Heater Problems

  • Failure to Ignite: If your Navien tankless water heater is failing to ignite, it could be due to various reasons such as insufficient gas supply, blocked air filters, or a malfunctioning thermostat.
  • Blowing Cold Air: A Navien tankless water heater blowing cold air when it should be providing hot water is a frustrating issue. It may be caused by technical problems preventing proper heating.
  • Leaking Water: Water leakage from your Navien tankless water heater may result from a condensation leak when gases within the unit cool and condense improperly.
  • Failure to Heat: When your Navien tankless water heater doesn’t heat water as expected, it could be due to dirty filters, a faulty standing pilot, or a dirty flame sensor.
  • Flash Codes: Navien tankless water heaters use flash codes to indicate issues. These codes can point to problems in ignition, blower motor, gas valve, HVAC accessory, or the inducer.
  • Shutting Off Unexpectedly: If your Navien tankless water heater keeps shutting off, it may be due to low airflow, reducing heat circulation, and causing the unit to overheat.

Trusted Navien Water Heater Installation

When it comes to installing a Navien tankless water heater, the quality of the installation plays a pivotal role in its performance and longevity. Choosing SmileHVAC for Navien water heater installation offers numerous benefits:

  • Authorized Navien Technicians: Our certified technicians are authorized by Navien, ensuring that we have the expertise and experience to install your unit correctly.
  • Sizing and Placement: We consider factors like your home’s size and hot water demands to recommend the right Navien tankless water heater model and determine the best location for installation. Proper sizing and placement are crucial for efficiency.
  • Safety and Code Compliance: SmileHVAC technicians adhere to safety guidelines and local building codes during installation, ensuring that your Navien tankless water heater operates safely and legally.
  • Efficiency and Performance: Our installation services are geared toward maximizing the efficiency and performance of your Navien unit, which means you’ll enjoy consistent hot water and energy savings.
  • Warranty Support: We stand by the quality of our work, and our installations often come with warranties for added peace of mind.

In addition to Navien tankless water heater services, SmileHVAC offers a wide range of HVAC solutions to Toronto residents, including furnace repair, air conditioner installation, water heater maintenance, thermostat installation, and more. We are committed to excellence, affordability, and customer satisfaction.

Contact us today at 437-777-4555 or book your appointment online to experience the SmileHVAC difference. When you book online, you’ll receive a 10% discount on your service call.


Call us at 437-777-4555
or book your appointment online.

*Get 10% OFF on your service call when you book online.

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SmileHVAC: Your Trusted Navien HVAC Partner in Toronto

At SmileHVAC, we take pride in being a reliable HVAC service company serving the Toronto area. Our dedication to excellence and customer satisfaction is reflected in every service we provide, including Navien tankless water heater repair and installation.

Our services extend beyond Navien products. SmileHVAC offers a comprehensive range of HVAC services, including furnace repair, air conditioning installation, water heater maintenance, thermostat installation, and more. Our technicians are highly trained, and our company is built on a foundation of trust, professionalism, and affordability.

Whether you need a Navien tankless water heater repaired, installed, or require assistance with any other HVAC-related issue, SmileHVAC is here to serve you. We are your local HVAC partner dedicated to keeping your home comfortable and your appliances running smoothly.

Contact us today at 437-777-4555 or book your appointment online to experience the SmileHVAC difference. Plus, when you book online, you’ll receive a 10% discount on your service call.

Make an appointment with SmileHVAC, your trusted HVAC partner, and enjoy peace of mind knowing that your Navien tankless water heater is in expert hands. We’re here to ensure your home remains comfortable and your hot water supply is consistently reliable.

Brands We Carry and Repair

Smile HVAC is authorized and licensed to service over 30 brands, so if you own any HVAC equipment from these brands, you don’t need to call two companies. Smile HVAC will help you solve all HVAC-related issues and will assist with repairs and installations. We work with all brands including Lennox, Goodman, Amana, Keeprite, Bryant, Daikin, Carrier, York, Trane, Comfortmaker, Payne, Tempstar, Rheem, Ruud, and Mitsubishi Electric


Area We Serve Near You

Common Navien Problem Faced By Customers

Why is my Navien tankless water heater not producing hot water?

There could be various reasons for this issue, including a lack of gas supply, a problem with the ignition system, a blocked heat exchanger, or a malfunctioning temperature sensor.

Why does my Navien tankless water heater produce lukewarm water instead of hot water?

Lukewarm water can result from a mix of hot and cold water, which may be due to a low flow rate or inadequate gas supply. It could also be caused by a problem with the burner or heat exchanger.

What should I do if my Navien tankless water heater displays an error code?

Error codes on Navien tankless water heaters provide diagnostic information. Refer to your user manual or the Navien website to identify the specific error code and its corresponding troubleshooting steps. If you can't resolve the issue, contact a certified technician.

How can I prevent my Navien tankless water heater from leaking?

Leaks can occur due to condensation or problems with the unit's plumbing connections. Regular maintenance and inspection, as well as ensuring proper installation, can help prevent leaks. If you notice a leak, it's essential to address it promptly to prevent water damage.

Why is my Navien tankless water heater making unusual noises?

Unusual noises, such as clicking, popping, or rumbling, may indicate issues like scale buildup in the heat exchanger, a malfunctioning fan, or improper venting. These noises should be investigated by a professional to prevent further damage.

How can I increase the water temperature from my Navien tankless water heater?

To adjust the water temperature, navigate through the settings on your Navien tankless water heater's control panel. Refer to your user manual for specific instructions on adjusting the temperature setting. Be cautious not to set it too high to avoid scalding.

Why does my Navien tankless water heater frequently shut off during use?

Frequent shutdowns can be due to a variety of issues, including overheating, a lack of gas supply, venting problems, or issues with the ignition system. These issues require professional diagnosis and repair.

Is it normal for my Navien tankless water heater to produce a slight delay in delivering hot water to my faucets?

Yes, a slight delay in hot water delivery is common with tankless water heaters. It may take a few moments for the unit to heat the water and reach your faucet. This is often a minor inconvenience and not indicative of a problem.

Can I perform maintenance on my Navien tankless water heater myself?

While some basic maintenance tasks like cleaning the air filter and flushing the heat exchanger can be done by homeowners, it's recommended to have a certified technician perform more complex maintenance tasks to ensure the unit's continued performance and warranty coverage.

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