Tankless water heaters are a popular choice for homeowners because of their energy efficiency and long lifespan. However, during the winter months, they require special care and maintenance to prevent damage from freezing temperatures. In this guide, we’ll go over the steps you can take to properly winterize your tankless water heater and protect it from the cold weather.
1. Why Winterizing Your Tankless Water Heater is Important
During the winter months, temperatures can drop below freezing, causing water in your tankless water heater to freeze and expand. This can cause significant damage to the unit, leading to costly repairs or even the need for a replacement. Winterizing your tankless water heater helps prevent freezing and damage to the unit, ensuring it will continue to function properly for years to come.
2. Steps to Winterize Your Tankless Water Heater
1. Turn Off Power and Water Supply
Before you begin the winterization process, turn off the power and water supply to the unit. This will prevent any accidents and ensure that water is not being supplied to the unit while you’re trying to drain it.
2. Drain the Unit
Next, locate the drain valve on your tankless water heater and attach a garden hose to it. Run the hose to a drain or outside, making sure it’s secure and won’t come loose. Open the drain valve and let the water drain out completely. If your unit has a built-in pump, turn it on to help flush out any remaining water.
3. Flush the Unit
After draining the unit, close the drain valve and remove the hose. Next, attach a new hose to the cold water inlet valve and run it to a drain or outside. Turn on the cold water supply and let it run through the unit for 5-10 minutes. This will help flush out any remaining water and prevent any buildup or mineral deposits.
4. Remove and Clean the Filter
Most tankless water heaters have a filter that needs to be cleaned regularly. Remove the filter and clean it with warm water and soap. If the filter is damaged or worn, replace it with a new one.
5. Check for Leaks
Inspect the unit for any signs of leaks or damage. If you notice any issues, contact a professional to inspect and repair the unit before winterizing.
6. Install a Freeze Prevention Kit
Finally, to ensure your tankless water heater is protected from freezing temperatures, consider installing a freeze prevention kit. This kit includes a thermostat that will turn on the unit if the temperature drops too low, preventing any damage from freezing water.
3. Additional Tips for Winterizing Your Home
In addition to winterizing your tankless water heater, there are other steps you can take to protect your home from the cold weather. Consider insulating your pipes and sealing any air leaks in your home to keep it warm and energy-efficient.
4. FAQs About Winterizing a Tankless Water Heater
Do I need to winterize my tankless water heater if it’s located indoors?
While indoor units are less likely to freeze, it’s still recommended to winterize your tankless water heater to prevent any potential damage.
Can I use antifreeze to winterize my tankless water heater?
No, using antifreeze is not recommended for tankless water heaters as it can cause damage to the unit.
How often should I winterize my tankless water heater?
It’s recommended to winterize your tankless water heater annually before the cold weather arrives.
What should I do if I forgot to winterize my tankless water heater and it froze?
If your tankless water heater has frozen, do not attempt to use it. Contact a professional to inspect and repair the unit before using it again.
Can I still use my tankless water heater during the winter months?
Yes, you can still use your tankless water heater during the winter months. However, it’s important to properly winterize the unit and take steps to prevent freezing temperatures from causing damage.
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