Scale is the enemy of all water-using appliances. It’s a build-up of calcium and lime that can cause clogs, restrict water flow, and reduce the efficiency of your machine. If you have a tankless water heater, it’s important to descale it regularly to keep it running at its best. In this article, we’ll explain why descaling is necessary and how you can descale a tankless water heater.
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Don’t Skip Descaling: Why It’s Important
Scale builds up more slowly in a tankless water heater than in a tank water heater, but it can still have an impact on performance. Especially in California, where we experience hard water, descaling is essential to keeping your tankless water heater in good shape. The build-up clogs the heating elements, making them less effective. Over time, this build-up will cause your heat exchanger to use more and more energy when heating your water. Eventually, the build-up may also restrict the flow of water. Depending on how long the machine goes without routine maintenance, descaling may be necessary more than once a year.
If you descale your tankless water heater regularly, you can prevent these issues and keep your machine running smoothly. Descaling is an important part of routine maintenance for a tankless water heater.
How to Descale a Tankless Water Heater
Descaling a tankless water heater is not as simple as descaling a kettle or coffee maker. You can’t just run a descaling solution through the machine and be done with it. The process is more involved, but if you follow these steps, you’ll be able to descale your tankless water heater successfully.
1. Contact a Plumber
Descaling a tankless water heater is best left to the professionals. because of the potential risks involved. If you’re not comfortable descaling the machine yourself, contact a plumber and they’ll be able to do it for you.
If you decide to descale your tankless water heater yourself, follow these steps:
2. Turn Off the Water
Before you start descaling, you’ll need to turn off the water to your machine. Locate the shut-off valve and turn it clockwise to close it.
If your tankless water heater has an integrated shut-off valve, you can skip this step.
If you’re not sure where the shut-off valve is, consult your owner’s manual.
Now that the water is turned off, you can move on to descaling the machine.
Pour the descaling solution into the tankless water heater. You can use a commercial descaling solution or a DIY descaling solution made from vinegar.
Start the descaling process by running hot water through the machine for a few minutes. This will help to loosen any build-up that’s already in the system.
After a few minutes, turn off the hot water and let the descaling solution sit in the tankless water heater for at least an hour.
After an hour has passed, turn on the hot water and let it run until the descaling solution has been flushed from the system.
Now that the descaling process is complete, you can move on to flushing the tankless water heater.
4. Flushing the Tankless Heater
It’s important to flush the tankless water heater after descaling it. This will remove any descaling solution that’s left in the system and help to prevent corrosion.
To flush the tankless water heater, simply run hot water through it for a few minutes. You can let the hot water run into a drain or bucket.
After a few minutes, turn off the hot water and let the tankless water heater sit for at least an hour. This will give any descaling solution that’s left in the system time to evaporate.
After an hour has passed, turn on the cold water and let it run for a few minutes. This will flush out any descaling solution that’s left in the system.
And that’s it! You’ve successfully descaled your tankless water heater. Just remember to descale your machine regularly to keep it in good shape.
Let The Professionals Help Maintain Your Heater
If descaling your tankless water heater sounds like too much work, don’t worry. The professionals at Shepherd’s are here to help. We can descale your machine for you and perform any other maintenance tasks that it needs.