Tankless Water Heaters2024-05-10T11:13:23-04:00

Tankless Water Heaters

With a tankless water heater from Advanved HVAC, now you never have to worry about running out of hot water.

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setting a tankless water heater
Tankless Water Heater

Going Tankless Means Efficiency and Speed

No one enjoys a cold shower, especially during the frosty winter months. Now you never have to worry about running out of hot water! Advanced HVAC installs the innovative Rinnai brand of tankless water heaters that deliver a never-ending source of hot water–whenever and wherever it’s required. With a properly sized tankless water heater, you will never have to worry about hot water being used simultaneously in multiple areas ever again.

Showers and baths? Not a problem. Laundry and dishes? Wash away! Gone are the days of scheduling your hot water usage. Not to mention that all our tankless water heaters can easily adjust to your desired temperatures with a simple digital controller. All of our tankless water heaters are ENERGY STAR® certified, which will guarantee savings on your monthly utility bill.


Our most popular product

tankless water heaters


  • Endless hot water.
  • Up to 96% Annual Fuel Utilization Efficiency.
  • Various models and sizes available.
  • Easy maintenance.
  • Once registered, receive 5 year limited warranty on parts and labour and 12 year limited warranty on the heat exchanger.





Frequently Asked Questions

Why should I get a tankless water heater?2021-01-12T15:33:23-04:00

Tankless water heaters are a great choice for many homes. There are many significant advantages to getting a tankless water heater because they are:

  • Long-lasting and durable: Tankless water heaters are especially durable and are made with quality materials. Tankless water heaters have a very long life expectancy and have minimal operating costs. Most models also have replaceable parts so in the event that your tankless water heater needs servicing, the individual part can be replaced instead of the entire unit.
  • Able to produce endless hot water: While water storage tanks are limited by size and can run out of water after periods of extended uses, tankless water heaters can provide continuous hot water.
  • Environmentally friendly: Traditional water heaters heat water, which then sits in a tank. This water loses its heat and the tank is constantly turning on and off to keep the water heated. With tankless water heaters, the water is only heated as it is needed, meaning there is less wasted energy.
  • Compact and space-saving: Traditional water heaters take up a lot of space, and for those with smaller homes the lost space is felt more strongly. Tankless heaters are installed hanging on the wall, out of the way and taking up very little space.
  • If you are considering making the transition to a tankless water heater, contact us today.

    What size tankless water heater do I need?2023-08-28T12:17:37-04:00

    Choosing the right size of tankless water heater involves a couple steps and a bit of math. While they are a great option for most homes, getting the right size means getting the most out of your tankless water heater.

    1. Decide the total number of water devices you want to run and their total flow rate, and add them all together. You want to make sure the tankless water heater you install in your home is the right size to handle your dishwasher, shower, faucets, etc. Once you have added these numbers together, you will have the desired flow rate you will need for your tankless water heater.
    2. Determine the necessary temperature rise. Again, this step will require a little math. To determine the temperature rise, you will simply subtract the incoming water temperature from the desired output temperature. If you are unable to measure the temperature of your water, a safe assumption is that incoming water temperature is around 10°C. In most cases, the desired output temperature is between 42-45°C.

    Tankless water heaters are rated by the maximum temperature rise possible , so once you have determined your total flow rate and necessary temperature rise, you will be able to choose a water heater that suits your home and needs. If you are unsure about what size would be best for your home, contact us today, we would be happy to help.

    What is a tankless water heater? How does it work?2023-08-28T13:00:17-04:00

    As the name suggests, tankless water heaters – also known as instantaneous water heaters, or demand-type water heaters – are water heaters which heat the water instantly and do not use a storage tanks. With traditional water heating tanks, when a hot water tap is turned on, water flows into the unit and is heated by either a gas burner or an electric element. With a tankless water heater, water is only heated as you need it; and heated water is not stored.


    With 100+ years of combined experience, Advanced HVAC provides fast and efficient 24-hour emergency HVAC services in Ottawa, 365 days a year. A friendly & highly competent Advanced HVAC technician is always ready to assist you.

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