How to Descale a Tankless Water Heater

How to Descale a Tankless Water Heater


Just like how we need our coffee to be descaled for optimum performance, our tankless water heater needs it too! 

Descaling is necessary to remove the mineral build-up that can clog the system and affect its efficiency over time. So, if you want your water heater to last long and give you hot water whenever you want, descaling is the way to go. 

In the next sections, let’s talk about the signs, materials, and steps to descale your tankless water heater.


Signs That Your Tankless Water Heater Needs Descaling

If you’re experiencing any of these three things, it’s probably time to descale your tankless water heater. Does your shower turn from hot to lukewarm without warning? 

Is there knocking in the walls that sounds like a woodpecker? Are you stuck taking chilly showers every day? If you’re nodding yes, your unit is likely suffering from a build-up of minerals that are causing blockages in the system. 

Don’t wait until your water heater goes completely haywire. It’s better to descale it now and save yourself the hassle later.

Materials Needed for Descaling

When it comes to descaling your tankless water heater, you’ll need a few materials to get started. First up is a bucket to catch the water and vinegar solution. Then, you’ll need white vinegar, which is a natural and affordable descaling solution. 

A submersible pump kit will help you circulate the solution through your water heater, and a garden hose will be handy for draining the solution after descaling is complete. Remember, purchasing the right materials will make descaling a breeze, and you’ll have hot water in no time.

Schedule an Appointment to Descale Your Tankless Water Heater!

Steps to Descale a Tankless Water Heater

So, you’ve noticed some signs that your tankless water heater needs to be descaled. It’s time to take action! The descaling process can seem daunting, but it’s actually quite simple. Just follow these steps:

Step 1: Turn off the power. You don’t want any accidents while you’re working. 

Step 2: Turn off the cold water supply and valves. Again, we don’t want any accidents while you’re working on the tankless water heater. 

Step 3: Connect the pump kit. The pump kit will help circulate the white vinegar through the water heater. 

Step 4: Turn on the vinegar solution. The vinegar will help break down and dissolve the build-up that’s causing the issues with your tankless water heater. 

Step 5: Drain the vinegar solution. After about an hour of circulation, the vinegar solution will have done its job. Drain it and get ready for the final step. 

Step 6: Repeat with fresh water. This flush will help ensure that all the remaining build-up and vinegar are removed.

It’s as simple as that! Just make sure to follow each step carefully and take your time. No need to rush through it. Remember, prevention is key! Be sure to regularly flush the tankless water heater annually and install a water softener or use a water filter to help minimize future build-up. 

Now that you know how to descale a tankless water heater, you can save yourself the cost and hassle of a repairman. Just be sure to call us if you run into any issues during the descaling or if you need further assistance. We’re always here to help!

Preventive Measures

To prevent your tankless water heater from requiring frequent descaling, there are a few measures you can take. Firstly, flushing the heater annually using a DIY method or by professional help will remove buildup, ensure smooth operation, and prolong its life. 

Secondly, installing a water softener will prevent scale buildup by removing dissolved minerals from the water. Finally, using a water filter will guard against sediment buildup and impurities in the water. 

By following these preventive measures, you can save money, and enjoy long-lasting and efficient performance from your tankless water heater. 

So there you have it – the ultimate guide on how to descale a tankless water heater. From the signs that it needs descaling to the steps involved, we’ve covered it all. 

And to prevent this from happening again, yearly flushing, installing a water softener, or using a water filter can help. Call us now to book your appointment!

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