We have been receiving numerous requests for tankless cleaning, help, and advice, so in response we’re starting a new service…. Tankless Flushing! Thousands of tankless water heaters have been installed in Toronto and surrounding areas with sales people promoting a lifespan of 20-25 years….. Sure a tankless can last a long time, but not without some regular maintenance. Right? RIGHT!

First and most important, de-scaling your tankless water heater.

If the installer was good you will likely have isolation or flush valves installed. These valves allow you to push vinegar or a scale removal agent through the tankless effectively cleaning the buildup off the wall of the inside of the heat exchanger. As we wrote in “Lime Scale The Energy Thief” it really doesn’t take much buildup to decrease efficiency significantly (and isn’t that what you bought the tankless for in the first place?).

The Process

At the Tankless Hot Water Guide were here to help people first and foremost, if you are hand this is something that you can do yourself.  Here are a brief outline of the steps necessary to flush your tankless heater.

1. Unplug your tankless.
2. On the blue isolation (flush) valve shut the Cold water supply off.
3. On the red isolation (flush) valve shut the hot water exit off.
4. Now you will need two short hoses, a bucket and a pump of some sort.
5. Attache the two hoses to the isolation valves (flush valves).
6. Attach the other end of the hose running from the blue isolation valves to your pump.
7. Fill the bucket with your de-scaling agent (vinegar).
8. Turn the pump on and make sure that the red isolation valve hose is running back into the bucket.
9. Let this run for at least 30 minutes.
10. –If the system hasn’t been flushed in a long time and you see a lot of grime, unplug the pump, dump and refill the bucket with new vinegar.  Let run for an additional 30 minutes.
11. After you are finished dump the bucket and fill with clean water, start the pumping again to flush the vinegar out of the system.  If you use a chemical de-scaling solution make sure to rinse your tankless thoroughly.
12. Almost done!
13. Disconnect all the hoses, replace caps, double check everything is back to normal.
14. Turn the two valves back to the on or flow position and plug the tankless back in.
15. Run the hot water at a few taps to push any air in the system out and confirm hot water is being produced.
16. Repeat once every year or so.

Our Service

Yes that can be a lot of work, but we can do it for you! $99 for a system flush Don’t have an isolation valve kit on your tankless? No problem, Valves and installation for $149 Questions and Concerns? Always free!

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