Installing a tankless water heater in your home can provide hot water on demand and save space compared to traditional tank-style heaters. However, the installation process can be complex and requires careful consideration of various requirements. In this guide, we will walk you through the key factors to keep in mind when installing a tankless water heater, ensuring a safe and efficient setup for your home.
Before you begin the installation process, it is important to note that installing a tankless gas water heater can be difficult and potentially hazardous. Therefore, it is recommended to hire a licensed professional plumber to handle the installation. They have the necessary expertise and knowledge to ensure the job is done correctly and in compliance with local plumbing and electrical codes.
When sourcing and installing parts for your new tankless water heater, it is crucial to follow all local plumbing and electrical codes as they can vary by location. This will help ensure the safety and efficiency of your installation.
Before you start the installation process, make sure you have all the necessary tools on hand. This includes a pipe wrench, drill/driver, keyhole saw, and a hand truck if you are replacing a tank-style water heater. Having these tools readily available will help streamline the installation process.
Tankless water heaters require specific installation requirements to function properly. They need a gas line for fuel, combustion air, a vent for removing exhaust gas, and an electrical outlet for power. Upgrading the gas line may be necessary as tankless water heaters typically require more gas when firing compared to traditional tank-style heaters. Additionally, it is essential to measure the available space for the new water heater to ensure you choose the right size.
Key Takeaways:
- Installing a tankless water heater is a complex process that should be handled by a licensed professional plumber.
- Follow local plumbing and electrical codes during the installation to ensure compliance and safety.
- Have the necessary tools, including a pipe wrench, drill/driver, keyhole saw, and hand truck, for the installation process.
- Tankless water heaters require a gas line, combustion air, a vent, and an electrical outlet for power.
- Upgrade the gas line if necessary to accommodate the higher gas requirements of a tankless water heater.
- Measure the available space to choose the right size tankless water heater for your home.
Upgrade Your Gas Line for a Tankless Water Heater
When it comes to installing a tankless water heater, one crucial consideration is upgrading your gas line. Unlike traditional water heaters, tankless models require a larger gas line to accommodate their higher gas requirements during operation. This upgrade is necessary to ensure optimal performance and efficiency.
It is highly recommended to hire a licensed contractor or plumber for gas line sizing and installation, as they have the expertise to handle the job safely and correctly. In most cases, the gas line will need to be upgraded by jumping up two sizes, from a 1/2-inch line to a 1-inch line. This larger gas line will provide the necessary gas flow for the tankless water heater to function properly.
Upgrading the gas line will involve running a new, larger gas pipe from the gas meter to the location of the tankless water heater. The size and capacity of the gas line should be determined based on the gas requirements of the specific model and the available space. Consulting with a professional can help ensure that the gas line upgrade is done according to local codes and standards, guaranteeing a safe and efficient installation.
Benefits of Upgrading the Gas Line:
- Ensures proper gas flow for the tankless water heater
- Prevents issues such as reduced water temperature or system malfunctions
- Optimizes the performance and efficiency of the tankless water heater
- Complies with local plumbing and building codes
- Provides peace of mind knowing that the installation is done safely and correctly
Take the necessary steps to upgrade your gas line when installing a tankless water heater. By doing so, you can enjoy the benefits of a reliable, energy-efficient hot water system that meets your household's needs.
Benefits of Upgrading the Gas Line Points to Consider Ensures proper gas flow for the tankless water heater Consult a licensed contractor or plumber for gas line sizing and installation Prevents issues such as reduced water temperature or system malfunctions Upgrade the gas line by jumping up two sizes, from a 1/2-inch line to a 1-inch line Optimizes the performance and efficiency of the tankless water heater Run a new, larger gas pipe from the gas meter to the location of the water heater Complies with local plumbing and building codes Determine the size and capacity of the gas line based on the specific model's requirements Provides peace of mind knowing that the installation is done safely and correctly Consult with a professional to ensure code compliance and safe installation
Remove and Dispose of the Old Water Heater
When upgrading to a tankless water heater, it is necessary to remove and dispose of the old water heater before installing the new one. This ensures a clean and efficient installation process.
Here is a checklist of steps to follow when removing and disposing of the old water heater:
- Turn off the water supply and gas supply valves connected to the old water heater.
- Drain the old water heater fully by connecting a heat-resistant hose to the drain valve and opening a hot water faucet to release the pressure in the system.
- Disconnect the water lines and gas line from the old water heater, being careful not to damage them during the process.
- Properly dispose of the old water heater in accordance with local sanitation or recycling guidelines. Check with your local waste management provider for specific instructions on how to dispose of large appliances.
https://www.youtube.com/watch?v=BYRQjc5nMgI
Properly removing and disposing of the old water heater is an important step in the tankless water heater installation process. It ensures a clean and safe environment for the new water heater and helps to prevent any potential issues that may arise from keeping an outdated unit.
Table: Comparing the Old Water Heater and Tankless Water Heater
Old Water Heater Tankless Water Heater Size Large and bulky Compact and space-saving Efficiency Less energy-efficient Highly energy-efficient Hot Water Supply Limited supply based on tank size Endless supply on demand Lifespan Typically 10-15 years Generally longer lifespan
By properly disposing of the old water heater and installing a tankless water heater, you can enjoy the benefits of energy efficiency, space-saving design, and endless hot water supply.
Mount the Tankless Water Heater
When installing a tankless water heater, it is crucial to properly mount the unit to ensure stability and safe operation. Here are the key steps to follow during the mounting process:
Choose the Right Location
Firstly, select a suitable location for your tankless water heater. It should allow for easy venting to the outside and meet local code regulations. Consider factors such as accessibility, proximity to gas and water supply lines, and available space. The manufacturer's instructions will provide guidance on specific requirements for your model.
Build a Sturdy Mounting Box
Next, you'll need to construct a sturdy mounting box using 2 x 4 lumber and plywood. This box will securely hold the tankless water heater and attach it to the basement wall. Make sure to follow the manufacturer's specifications for the size and dimensions of the box. It's important to create a solid foundation to prevent any movement or vibrations that could lead to damage or leaks.
Securely Install the Water Heater
Once the mounting box is ready, carefully install the tankless water heater onto the box according to the manufacturer's instructions. Use the appropriate fasteners to ensure a secure attachment. Double-check that all connections are tight and secure, and verify that the water heater is level to prevent any potential issues in its operation.
By following these steps, you can ensure a proper and secure installation of your tankless water heater. This will help to maximize its efficiency and longevity while ensuring your safety and comfort.
Install the Gas Line for the Tankless Water Heater
When it comes to installing a tankless water heater, one of the crucial steps is ensuring the proper installation of the gas line. While this task should ideally be handled by a licensed contractor, we'll outline the basic process here.
If your current gas line is sufficient for the tankless water heater, you can continue the gas line to the new water heater location. This can be done using threaded black iron pipe, which is commonly used for gas line installations.
To ensure the safe and efficient operation of the tankless water heater, it is important to install a gas shut-off valve, tee, and sediment trap according to the manufacturer's instructions. These components help regulate the gas flow and remove any impurities that may affect the performance of the water heater.
When running a new gas supply line, it is recommended to use flexible gas supply line or black pipe. These materials are durable and suitable for gas line installations. It is important to make all gas line connections using thread sealant designed specifically for gas lines to prevent any leaks.
Step Description 1 Ensure the current gas line is sufficient for the tankless water heater. 2 Install a gas shut-off valve, tee, and sediment trap according to the manufacturer's instructions. 3 Run a new gas supply line using flexible gas supply line or black pipe. 4 Make all gas line connections using thread sealant designed for gas lines.
https://www.youtube.com/watch?v=1E3DDhczoJM
Proper installation of the gas line is essential for the safe and efficient operation of a tankless water heater. It is always recommended to consult with a licensed professional to ensure the installation is done correctly and meets all applicable codes and regulations.
Connect the Water Lines for the Tankless Water Heater
Connecting the water lines for your tankless water heater is a crucial step in the installation process. It ensures a proper flow of hot and cold water to the unit, allowing it to deliver hot water on demand. The following steps will guide you through the process of connecting the water lines for your tankless water heater:
Gather the necessary materials:
- Copper pipe
- Flux
- Propane torch
- Bell hangers
- Pipe insulation
Once you have all the materials ready, follow these steps:
- Cut the copper pipe to the required length to connect the new water lines to the existing ones.
- Clean and deburr the cut sections of the copper pipe to ensure a proper soldering connection.
- Apply flux to the cleaned sections of the copper pipe.
- Use a propane torch to heat the pipe and melt the solder, creating a strong, leak-proof connection.
- Connect the new water lines to the existing lines using the soldered copper pipes.
- Secure the water lines against the wall using bell hangers, making it easier to apply pipe insulation later.
It is also important to consider installing an expansion tank near the cold intake to the water heater if your water system has a check valve or anti-siphon valve. This helps regulate the pressure and protect the tankless water heater from potential damage.
Following these steps will ensure a proper connection of the water lines for your tankless water heater, allowing it to function efficiently and provide hot water whenever needed.
Install the Pressure Relief Valve for the Tankless Water Heater
When installing a tankless water heater, it is crucial to ensure the safety of the system by installing a pressure relief valve. This valve serves as a critical safety device that releases pressure if it builds up too high. To install the pressure relief valve for your tankless water heater, follow the manufacturer's instructions carefully.
Start by locating the appropriate location on the water heater unit for the pressure relief valve. Typically, this valve is installed near the top of the water heater, allowing for easy access. Use a wrench or pliers to unscrew the existing plug from the designated port on the water heater.
Next, attach a Teflon tape to the threads of the pressure relief valve, ensuring a secure and leak-proof connection. Insert the valve into the designated port on the water heater unit and tighten it using a wrench or pliers. Be careful not to over-tighten, as this can cause damage to the valve or water heater.
Once the pressure relief valve is securely in place, make sure to connect the discharge pipe to the valve. This discharge pipe should be positioned in a way that allows any released pressure to be safely directed away from people or areas where it can cause harm. Consult local plumbing codes for specific requirements on the length and positioning of the discharge pipe.
Once the pressure relief valve and discharge pipe are properly installed, turn on the water supply to the tankless water heater and check for any leaks. It is important to ensure that all connections are tight and secure to prevent water leakage. Complete a thorough check for any leaks before proceeding with the rest of the installation process.
https://www.youtube.com/watch?v=IQ1FSw2xVUs
Summary:
Installing a pressure relief valve for your tankless water heater is a crucial step to ensure the safety of the system. Follow the manufacturer's instructions carefully to install the valve in the designated location on the water heater unit. Connect the discharge pipe to the valve and position it in a way that directs released pressure safely away from people or areas where it can cause harm. Finally, turn on the water supply and check for any leaks before proceeding with the installation process.
Install the Exhaust Vent for the Tankless Water Heater
Proper installation of the exhaust vent for your tankless water heater is essential to ensure the safe and efficient operation of the unit. Follow the manufacturer's instructions carefully to ensure compliance with the specific requirements of your tankless water heater model.
Choose a suitable location for the vent that allows for proper venting to the outside and meets local code regulations. It is important to consider the distance from windows, doors, and other air intakes to prevent any potential exhaust gas intrusion into your living space.
“A well-installed and properly sealed vent pipe is crucial to prevent any exhaust gas leaks, which can be harmful to your health.”
When installing the vent pipe, use stainless steel venting material for proper corrosion resistance. This will ensure the longevity and durability of the venting system. Proper sealing and secure attachment of the vent pipe are essential to prevent any potential leaks.
Table: Venting Comparison
Venting Type Advantages Disadvantages Single-Wall Vent Pipe Simple and cost-effective Requires a larger clearance to combustible materials Double-Wall Vent Pipe Provides better insulation and reduces clearances More expensive than single-wall vent pipe Concentric Vent Pipe Allows for both air intake and exhaust in one pipe May require specialized installation
By following the proper installation procedures for the exhaust vent, you can ensure the safe and efficient operation of your tankless water heater. Remember to consult with a professional plumber or contractor if you have any doubts or concerns throughout the installation process.
Turn on the Water for the Tankless Water Heater
Now that you have successfully installed your tankless water heater, it's time to turn on the water and start enjoying the benefits of on-demand hot water. Follow these steps to complete the installation process:
- Purge the air from the water pipes: Open a faucet, preferably on the highest floor of your home, and let the water run for a few minutes to remove any air trapped in the system. This will ensure proper water flow and prevent any issues with your tankless water heater.
- Plug in the tankless water heater: Locate the electrical outlet nearest to your water heater and plug it in. Make sure the outlet is properly grounded and can handle the electrical load required by the unit.
- Insulate the hot water pipe: To improve energy efficiency and reduce heat loss, consider insulating the hot water pipe that connects to the tankless water heater. This will help maintain the temperature of the water as it travels through the pipe to your faucets and showers.
- Turn on the gas: If your tankless water heater is powered by gas, turn on the gas supply valve to allow gas to flow to the unit. Check for any gas leaks using a soap and water solution. If bubbles appear, there is a leak, and you should immediately shut off the gas and seek professional assistance.
- Follow manufacturer's start-up procedures: Each tankless water heater model may have specific start-up procedures outlined in the manufacturer's instructions. Follow these instructions carefully to ensure the proper functioning of your water heater.
- Test the temperature and outlets: Once the water heater is fully operational, test the temperature of hot water at various outlets in your home to ensure it meets your desired comfort level. If adjustments are needed, consult the manufacturer's instructions to change the temperature settings on your tankless water heater.
Enjoy Endless Hot Water with Your New Tankless Water Heater
Congratulations! With the successful completion of the installation process and the proper functioning of your tankless water heater, you can now enjoy the convenience and energy efficiency of on-demand hot water. Whether you're taking a long, relaxing shower or running multiple appliances simultaneously, your tankless water heater will provide a continuous supply of hot water to meet your household's needs.
Remember, routine maintenance and regular inspection of your tankless water heater are essential to ensure optimal performance and longevity. Consult the manufacturer's instructions for maintenance recommendations and schedule any required professional servicing to keep your tankless water heater running smoothly for years to come.
"Installing a tankless water heater is a wise investment that offers several benefits, including energy savings, space efficiency, and unlimited hot water. By following the proper installation process and maintaining your tankless water heater, you can enjoy the convenience and comfort it brings to your home." - Tankless Water Heater Installation Professional
Advantages Disadvantages Energy-efficient Higher upfront cost Space-saving Requires professional installation Unlimited hot water Possible high installation cost Longer lifespan Requires routine maintenance Reduced risk of water damage Potential for mineral buildup
Conclusion
Installing a tankless water heater can be a complex process that requires careful planning and adherence to local codes. It is always recommended to hire a licensed professional plumber or contractor for this task. They have the expertise and knowledge to ensure a safe and efficient installation.
Throughout the installation process, several important steps need to be followed. These include upgrading the gas line, removing and disposing of the old water heater, and properly connecting the water lines. Following the manufacturer's instructions and testing the system for leaks and proper functioning are also crucial.
It's important to note that the cost of tankless water heater installation can vary depending on the specific requirements of your home and the complexity of the installation. It's best to consult with a professional to get an accurate estimate for your project.
FAQ
Is it difficult to install a tankless gas water heater?
Installing a tankless gas water heater can be difficult and sometimes dangerous. It is recommended to hire a licensed professional plumber for the installation.
What should I consider when installing a tankless water heater?
When installing a tankless water heater, it is important to follow all local plumbing and electrical codes. Additionally, ensure you have the necessary tools and measure the available space for the new water heater.
Do I need to upgrade my gas line for a tankless water heater?
Upgrading the gas line may be necessary as tankless water heaters require more gas when firing. It is recommended to consult with a licensed contractor to ensure the gas line upgrade is done safely and correctly.
How do I remove and dispose of the old water heater?
Before removing the old water heater, turn off the water supply and gas supply valves. Drain the old water heater fully and disconnect the water lines and gas line. Check local sanitation or recycling guidelines for proper disposal methods.
How should I mount the tankless water heater?
Build a sturdy mounting box using 2 x 4 lumber and plywood to securely hold the tankless water heater. Install the water heater securely to the mounting box according to the manufacturer's specifications.
Can I install the gas line for the tankless water heater myself?
Gas line installation for a tankless water heater should be handled by a licensed contractor if you are not familiar with making gas pipe connections. If the current gas line is sufficient, continue the gas line to the new water heater location using threaded black iron pipe.
How do I connect the water lines for the tankless water heater?
Follow the manufacturer's instructions to connect the water supply line to the water heater valves. Use copper pipe to tie in new hot and cold water lines to the existing lines and run them to the new water heater. Clean and deburr the cut sections of copper pipe before soldering them together.
Do I need to install a pressure relief valve for the tankless water heater?
All water heaters require a pressure relief valve as a safety device. Install a pressure relief valve and purge valve according to the manufacturer's instructions.
How do I install the exhaust vent for the tankless water heater?
Follow the manufacturer's instructions for installing the exhaust vent for your specific tankless water heater. Choose a suitable location that allows for proper venting to the outside and meets local code regulations.
How do I turn on the water for the tankless water heater?
Open a faucet to purge any air from the water pipes and heater before turning on the water supply. Plug in the tankless water heater and turn on the gas. Test the temperature and outlets to ensure proper functioning.
