Heat Pump Installation BC Canada | Furnace & HVAC Repair Service | Onsite Heating & Cooling

Tankless Water Heater Install, Service and Repair

Tankless water heaters, also known as on-demand water heaters, provide hot water only when you need it, making them a popular choice for homeowners who want to save money on energy bills. While they require less maintenance than traditional water heaters, tankless water heaters still need professional installation, repair, servicing, and maintenance to ensure they are functioning efficiently and safely.


Installing a tankless water heater is a complex process that should only be done by a licensed professional such as our Onsite staff. Our licensed installers will ensure that the tankless water heater is installed correctly, taking into consideration factors like the size of the unit, the location, and the electrical or gas connections. An incorrect installation can cause numerous problems, including water leaks, poor performance, and even hazardous conditions.

During the installation process, our installers will typically follow these steps:

  • Assess the area where the tankless water heater will be installed, including the space and any necessary electrical or gas connections.
  • Remove the old water heater (if applicable).
  • Install the new tankless water heater, connecting it to the appropriate electrical or gas lines and making sure that it is level and secure.
  • Turn on the power or gas and test the unit to ensure it is functioning correctly.


If you notice any issues with your tankless water heater, it’s crucial to address them quickly. Ignoring a problem can lead to more severe damage and costly repairs. Some common signs that your tankless water heater needs repair include:

  • No hot water
  • Water leaks
  • Strange noises
  • Low water pressure
  • Discolored water

When you call Onsite to repair your tankless water heater, we will typically follow these steps:

  • Diagnose the problem by checking the unit, connections, and surrounding pipes.
  • Provide an estimate for the repair cost.
  • Perform the necessary repairs, which may include replacing parts or making adjustments to the unit or surrounding pipes.
  • Test the unit to ensure it is functioning correctly.

Regular servicing of your tankless water heater is essential to ensure it is functioning efficiently and safely. Servicing typically involves checking the unit, pipes, and connections for any signs of wear and tear, cleaning the unit, and making any necessary adjustments. It is recommended that you have your tankless water heater serviced once a year to maintain optimal performance.

During a tankless water heater service, our professionals will typically follow these steps:

  • Shut off the power or gas to the unit.
  • Flush the unit to remove any sediment or debris.
  • Inspect the unit, connections, and pipes for signs of wear and tear.
  • Make any necessary adjustments, such as tightening connections or replacing parts.
  • Turn on the power or gas.
  • Test the unit to ensure it is functioning correctly.


Regular maintenance of your tankless water heater can help extend its lifespan and improve its efficiency. Here are some maintenance tasks we can perform:

  • Check the unit for any signs of wear and tear or damage.
  • Check the air intake and exhaust vents to ensure they are clear of any debris or obstructions.
  • Clean the unit using a non-abrasive cleaner and a soft cloth.
  • Check the water filter and clean or replace it if necessary.
  • Check the electrical or gas connections to ensure they are secure and free from corrosion.
  • Test the temperature and pressure relief valves to ensure they are functioning correctly.

We follow the manufacturer’s instructions when performing any maintenance tasks on your tankless water heater.

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