How to Winterize Tankless Water Heater

Tankless water heaters are an energy-efficient, space-saving alternative to traditional tank-based water heaters. They provide hot water on demand, eliminating the need for a storage tank and reducing standby heat loss. However, as with any appliance, proper maintenance is crucial for optimal performance and longevity. Winterizing your tankless water heater is especially important to prevent damage from freezing temperatures.

In this guide, we will discuss the steps on how to winterize tankless water heater to ensure its smooth operation during the cold winter months. If you live in an area where temperatures drop below freezing, following these steps can save you from costly repairs and replacements.

Understanding Tankless Water Heaters

Before we dive into the steps for winterizing a tankless water heater, it’s essential to understand how this type of water heater works. Unlike traditional tank-based heaters that store and continuously heat a large amount of water, tankless water heaters use high-powered burners or electric coils to rapidly heat the water as it passes through the unit.

This on-demand heating method creates a constant hot water supply and eliminates standby heat loss, making tankless water heaters more energy-efficient than their traditional counterparts.

Why Winterize Your Tankless Water Heater?

Your tankless water heater is an investment, and like any other investment, you want it to last as long as possible.

Freezing temperatures can damage your tankless water heater’s components, leading to costly repairs or replacements. Moreover, if you live in an area with hard water, mineral buildup can also cause damage and decrease the efficiency of your unit. By winterizing your tankless water heater, you protect it from freezing temperatures and prevent any potential damage caused by mineral buildup.

Step-by-step Guidelines on How to Winterize Tankless Water Heater

Step 1: Turn Off the Water Supply

The first step in winterizing your tankless water heater is to turn off the water supply. Locate the shut-off valve near the unit and close it to stop any water from entering the system. Turning off the water supply will prevent any water from freezing inside the unit. If you need help with the location of your shut-off valve, consult your unit’s manual or contact a professional plumber for assistance. If your unit has isolation valves, open them to drain any remaining water in the pipes.

Step 2: Drain the Unit

After turning off the water supply, it’s time to drain the unit. Connect a hose to the drainage valve and place the other end in a bucket or outside, away from your home’s foundation. Open the drainage valve and let all the water out. Once the unit is drained, close the valve and remove the hose. If there is any remaining water, use a dry cloth or paper towel to soak it up.

Step 3: Remove and Clean the Air Intake Filter

Most tankless water heaters have an air intake filter to prevent dust and debris from entering the unit. Over time, this filter can get clogged with dirt and affect the heater’s performance. To winterize your tankless water heater, remove the air intake filter and clean it with warm, soapy water. Make sure to dry it completely before reinstalling it. While removing the filter, inspect it for any signs of damage and replace it if necessary.

Step 4: Check and Clean the Exhaust Vent

The exhaust vent is responsible for removing the combustion gases from the unit. If this vent gets clogged, it can cause your tankless water heater to malfunction or shut down. Check the exhaust vent for debris or blockage to winterize your unit. Use a soft brush or vacuum cleaner to remove any dirt or debris. If the vent is damaged, contact a professional for repairs.

Step 5: Store Your Unit in a Safe Place

After completing all the above steps, store your tankless water heater in a safe place for the winter season. Make sure to cover it with a waterproof material and keep it away from areas where freezing temperatures can reach it. If possible, store it indoors to protect it from harsh weather conditions. Make a note to inspect and clean your unit before using it again in the spring.

Following these simple steps on how to winterize tankless water heaters can save you from costly repairs and replacements. Proper maintenance and care are crucial for your unit’s performance and longevity, so follow these guidelines regularly. By doing so, you can enjoy hot water whenever you need it without any interruptions or unexpected expenses.

Additional Tips and Tricks to Winterize Tankless Water Heater

1. If you have a gas-powered tankless water heater, make sure to inspect and clean the burner periodically. Over time, debris and dirt can accumulate, affecting your heater’s efficiency.
2. Check for any leaks in the pipes or connections leading to and from your tankless water heater. If you notice any leaks, it is important to address them immediately, as they can lead to water damage and increased energy consumption.
3. Consider installing a tankless water heater flush kit, which is specifically designed for flushing out mineral build-up in the heat exchanger of your heater. This will help maintain its efficiency for longer periods of time.
4. Keep an eye on the temperature settings of your tankless water heater. Lowering the temperature by just a few degrees can save energy and reduce your heating bill.
5. Insulate the hot water pipes leading from your tankless water heater to your fixtures. This will help prevent heat loss and decrease the time it takes for hot water to reach your faucets or shower.
6. If you live in an area with hard water, consider installing a water softener system. This will help prevent mineral build-up in your tankless water heater and prolong its lifespan.
7. Regularly check the pressure relief valve on your tankless water heater to ensure it functions properly. This valve helps release excess pressure from the system, preventing damage to your heater.
8. If you are going away for an extended period during the winter months, turn off your tankless water heater to save energy and prevent any potential issues while you are away.
9. Consider installing a recirculating pump for your tankless water heater. This will help circulate hot water through your pipes, reducing the time it takes for hot water to reach your fixtures and saving on water waste.
10. Lastly, always refer to the manufacturer’s instructions and recommendations for maintaining your specific tankless water heater model. Following these guidelines will help ensure its longevity and efficiency.

Following these tips and tricks will help winterize your tankless water heater and contribute to its overall performance and longevity. It is important to regularly maintain your heater to avoid any potential issues and ensure it is running efficiently. Always consult a professional plumber for assistance if you have any concerns or questions. Stay warm this winter with a well-maintained tankless water heater!

Things You Should Consider to Winterize Tankless Water Heater

1. The first thing you should consider is the location of your tankless water heater. It should be installed in an area with proper ventilation and protection from freezing temperatures.
2. Drain any remaining water in your tankless water heater before winterizing it. This will prevent any potential damage caused by frozen or expanding water within the unit.
3. Inspect the exterior of your tankless water heater for any cracks or damage. If you notice any issues, addressing them before winterizing the unit is important.
4. For tankless water heaters that are installed outdoors, consider using a freeze-resistant drain pipe or covering the unit with an insulated box to protect it from harsh weather conditions.
5. In extremely cold climates, you may need to install a backup power source for your tankless water heater in case of power outages. This will ensure you can still access hot water during the winter months.
6. If you need help winterizing your tankless water heater, it is always best to consult a professional plumber for guidance and assistance. They will have the knowledge and experience to prepare your heater properly for winter.
7. Keep an eye on the drain pan under your tankless water heater to ensure it is not overflowing with water. If you notice any issues, it is important to address them immediately to prevent water damage.
8. Consider insulating the walls and doors of the room where your tankless water heater is located. This will help maintain a consistent temperature within the room and prevent cold air from affecting your heater.
9. Use a water softener or descaler on a regular basis to prevent mineral buildup in your tankless water heater. This will help maintain its efficiency and prevent potential issues down the line.
10. Lastly, always monitor your tankless water heater for any unusual noises, leaks, or other signs of malfunctioning. Addressing these issues early on can prevent costly repairs or replacements in the future.

Following these considerations will help ensure your tankless water heater is well-maintained and protected during winter. Proper preparation and maintenance can save you time, money, and stress in the long run. Stay warm and worry-free with a properly winterized tankless water heater!

Maintenance Tips for Winterizing Tankless Water Heaters

1. Insulate Your Water Heater Pipes:

To reduce heat loss and keep your water heater running efficiently, insulating your hot and cold water pipes is important. This will also help prevent frozen pipes during the colder months. You can use foam pipe insulation, which is easy to install and can be found at most hardware stores. This will also help save energy costs as your water heater won’t have to work as hard to keep the water hot. If you have a recirculating pump installed, make sure to insulate those pipes as well.

2. Flush Your Water Heater:

Flustering your tankless water heater at least once a year is recommended, especially before winterizing it. This helps remove any built-up sediment or mineral deposits that could affect its performance and efficiency. It is a simple process that involves connecting a hose to the drain valve and flushing out the water until it runs clear. This will also prolong the lifespan of your water heater.

3. Check and Clean Vents:

Proper ventilation is crucial for tankless water heaters to function correctly. Make sure to check the vents regularly for any blockages or debris that could hinder airflow. If you notice any buildup, use a vacuum or brush to clean it out. This will help prevent potential issues and ensure your water heater runs efficiently.

4. Inspect the Pressure Relief Valve:

The pressure relief valve is an important safety feature of a tankless water heater. It helps release excess pressure in case of a malfunction or overheating. Before winterizing, make sure to inspect the valve for any signs of damage or corrosion. If you notice any issues, replacing the valve before winter arrives is best.

5. Consider Installing a Freeze Protection Kit:

If you live in an area with extremely cold temperatures, investing in a freeze protection kit for your tankless water heater may be beneficial. This will help prevent the water from freezing and causing damage to your unit. The kit typically includes a heating element that wraps around the pipes and keeps them warm.

6. Keep Your Water Heater Running:

It may be tempting to turn off your tankless water heater during the winter months when it is not in use, but this can actually cause more harm than good. Constantly turning the unit on and off can strain the heating elements and cause them to fail. It is best to keep your water heater running at a low temperature (around 50-60 degrees Fahrenheit) when not in use to prevent any potential issues.

Following these maintenance tips for winterizing your tankless water heater will ensure its longevity and efficiency and save you from potentially costly repairs. Remember to always refer to the manufacturer’s instructions for specific maintenance guidelines, and if you encounter any issues, it is best to contact a professional plumber for assistance. Stay warm and enjoy hot showers all winter with a well-maintained tankless water heater!

Benefits of Winterizing Tankless Water Heaters

1. Increased Lifespan:

One of the main benefits of winterizing your tankless water heater is that it can help extend its lifespan. Tankless water heaters are designed to last longer than traditional tank-based units, but they still require proper maintenance to ensure they continue working efficiently. By winterizing your tankless water heater, you can prevent damage from freezing temperatures and keep it running smoothly for years to come.

2. Saves Money on Repairs:

Winterizing your tankless water heater can also help you save money in the long run. If your unit is not properly winterized, frozen pipes or valves could burst, resulting in costly repairs or even replacement of the entire unit. By taking preventative measures and winterizing your tankless water heater, you can avoid these unexpected expenses and keep your wallet happy.

3. Conserves Energy:

Tankless water heaters are known for their energy efficiency. Still, even if they can benefit from being winterized when the temperature drops, tankless water heaters have to work harder to heat the incoming cold water, increasing energy consumption. By winterizing your unit and insulating any exposed pipes, you can reduce the amount of energy needed to keep your water at the desired temperature.

4. Improves Performance:

Winterizing your tankless water heater can also help improve its overall performance. When temperatures drop, the unit may struggle to heat up and maintain a consistent flow of hot water. This could lead to lukewarm or even cold water from your faucets. By winterizing your unit, you can ensure it continues working optimally and provides hot water whenever needed.

5. Prevents Water Damage:

Frozen pipes or valves in a tankless water heater can cause damage not only to the unit itself but also to your home’s plumbing system. When these components thaw, they could leak or burst, resulting in water damage to your walls, floors, and other structures. By taking the time to properly winterize your tankless water heater, you can prevent these costly and inconvenient situations from occurring.

These are just a few of the many benefits that come with winterizing your tankless water heater. By preparing your unit for colder temperatures, you can save money, extend its lifespan, and ensure it continues to provide hot water whenever you need it. So pay attention to this important maintenance task and enjoy all the advantages of a properly winterized tankless water heater. Keep your unit running smoothly and efficiently all winter long! 

Conclusion

Now you know how to winterize tankless water heater and why it is important to do so. To recap, winterizing your tankless water heater involves shutting off the power and water supply, draining any remaining water from the unit, and protecting it from freezing temperatures. By taking these steps, you can prevent costly damage to your tankless water heater and ensure its longevity. Happy winterizing!