Who Installs Tankless Water Heater?

Tankless water heaters are typically installed by licensed plumbers or certified hvac technicians. These professionals have the knowledge and expertise to properly install and connect the unit to the existing plumbing and electrical systems.

Tankless water heaters have gained popularity due to their energy efficiency and endless hot water supply. If you’re considering installing one in your home, it’s important to understand who is responsible for the installation process. Generally, licensed plumbers or certified hvac technicians are the experts who handle tankless water heater installations.

Their specialized skills enable them to complete the installation and ensure that the unit is connected correctly to the existing plumbing and electrical systems. We will explore the role of these professionals in installing tankless water heaters and the important factors to consider when choosing an installer.

Who Installs Tankless Water Heater?

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Who Installs Tankless Water Heater?

If you’re considering installing a tankless water heater, you may be wondering who can handle this task efficiently. Well, the answer depends on various factors, including your level of expertise in plumbing and electrical work. Let’s explore the different options for installing a tankless water heater to help you make an informed decision.

Professional Plumbing Services:

  • Hiring a licensed and experienced plumber ensures a seamless and reliable installation process. They have the expertise to navigate the intricacies of plumbing systems and electrical connections, ensuring that your tankless water heater is installed correctly.
  • A professional plumber will also ensure that the installation adheres to local building codes and safety regulations, giving you peace of mind.

Hvac Specialists:

  • Some hvac (heating, ventilation, and air conditioning) specialists can also install tankless water heaters. While their primary focus is on heating and cooling systems, many hvac professionals have diversified their skills to include water heaters.
  • Opting for an hvac specialist with experience in tankless water heater installations can ensure a comprehensive understanding of the overall system dynamics and proper venting requirements.

Electrical Contractors:

  • Tankless water heaters often require a dedicated electrical circuit for proper operation. If you’re not well-versed in electrical work, it’s advisable to hire a licensed electrical contractor.
  • An experienced electrical contractor will ensure that the electrical connections and circuitry necessary for your tankless water heater are correctly installed, minimizing any potential safety risks.

Manufacturer-Certified Installers:

  • Some tankless water heater manufacturers have their own network of certified installers who are trained specifically to install their products. Opting for a manufacturer-certified installer can provide you with the assurance that the installation will be performed according to the manufacturer’s guidelines.
  • Manufacturer-certified installers have an in-depth understanding of the specific requirements and nuances of their products, ensuring optimal performance and longevity.

Diy Installation:

  • If you have sufficient knowledge and experience in both plumbing and electrical work, you may choose to install a tankless water heater yourself. However, it’s crucial to note that tankless water heater installation can be complex and demanding, requiring an understanding of various systems and codes.
  • If you decide to take the diy route, thorough research and consultation with experts is essential to ensure the proper installation of your tankless water heater.

Remember, it’s crucial to weigh the pros and cons of each installation option before making a decision. Safety, expertise, and compliance should be prioritized to ensure the efficient and reliable operation of your tankless water heater.

Benefits Of Installing A Tankless Water Heater

Tankless water heaters have gained popularity among homeowners due to their numerous benefits. Whether you’re tired of running out of hot water or looking to save money on energy bills, a tankless water heater might just be the solution you need.

Let’s delve into some of the key advantages of installing a tankless water heater.

Saving Money On Energy Bills With A Tankless Water Heater

  • Efficiency: Tankless water heaters are highly efficient compared to traditional water heaters. They only heat water when it’s needed, eliminating the energy wasted on constantly maintaining a tank full of hot water.
  • Lower energy consumption: By using less energy to heat water, tankless water heaters can help you save a significant amount of money on your energy bills. According to studies, homeowners can save up to 30% on their energy costs by switching to a tankless water heater.

Endless Hot Water Supply With Tankless Water Heaters

  • Continuous hot water flow: One of the main advantages of tankless water heaters is their ability to provide a continuous supply of hot water. Unlike traditional water heaters that can run out of hot water after prolonged use, tankless models heat water as it flows through, ensuring you never run out.
  • No waiting time: With a tankless water heater, you won’t have to wait for the tank to refill and reheat the water. The hot water is available instantly, allowing you to enjoy a relaxing shower or fill up the bathtub without any delays.

Space-Saving Design Of Tankless Water Heaters

  • Compact size: Tankless water heaters are significantly smaller than traditional water heaters. They are designed to be wall-mounted, saving valuable space in your utility room or basement.
  • Versatile installation options: Tankless water heaters can be installed in various locations, such as under sinks, in closets, or mounted on walls. Their compact size and flexibility make them a perfect choice for homes with limited space.

Installing a tankless water heater comes with several benefits. Not only can you save money on energy bills and enjoy an endless hot water supply, but also take advantage of their space-saving design. If you’re looking for an efficient and convenient way to heat water in your home, a tankless water heater is definitely worth considering.

Professionals Who Install Tankless Water Heaters

Licensed Plumbers Experienced In Tankless Water Heater Installations

When it comes to installing a tankless water heater, it’s crucial to rely on professionals who have the expertise and knowledge to get the job done right. Licensed plumbers specializing in tankless water heater installations are an excellent choice for this task.

Here are some key points to consider:

  • Licensed plumbers have undergone the necessary training and certification to handle plumbing work, ensuring they have the required skills and knowledge to install tankless water heaters.
  • They are experienced in dealing with the intricacies of tankless water heater installations, including understanding the specific requirements, proper venting, and electrical connections.
  • Licensed plumbers are well-versed in local building codes and regulations related to tankless water heater installations, ensuring compliance and safety.
  • Hiring a licensed plumber provides peace of mind, knowing that the installation will be completed professionally and efficiently, minimizing the risk of any future issues.
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Hvac Technicians Skilled In Installing Tankless Water Heaters

Another group of professionals suitable for tankless water heater installations are hvac (heating, ventilation, and air conditioning) technicians. Here’s what you need to know:

  • Hvac technicians have a deep understanding of heating systems, making them well-suited to install tankless water heaters, which are an integral part of a home’s heating system.
  • They possess the necessary skills and expertise to ensure proper sizing, placement, and integration of the tankless water heater into the existing hvac infrastructure.
  • Hvac technicians can effectively assess the overall heating needs of the property and provide recommendations on the most suitable tankless water heater model, taking into account factors such as energy efficiency and capacity requirements.
  • Their knowledge of heating systems allows them to optimize the tankless water heater installation to enhance performance and thermal efficiency.

Home Improvement Contractors Who Specialize In Tankless Water Heater Installations

Home improvement contractors with a specialization in tankless water heater installations are an excellent choice for homeowners looking for a comprehensive approach to their home upgrades. Consider the following:

  • These contractors have a wide range of expertise in various home improvement projects, including plumbing, electrical work, and construction, making them well-equipped to handle tankless water heater installations.
  • They can assess the current layout and infrastructure of the property to determine the most suitable tankless water heater installation approach.
  • Home improvement contractors can advise on any necessary modifications or upgrades to the existing plumbing and electrical systems to accommodate the tankless water heater installation effectively.
  • They provide a holistic approach to home improvements, ensuring that the tankless water heater installation seamlessly integrates with other related projects, such as bathroom renovations or kitchen upgrades.

Choosing the right professionals for your tankless water heater installation ensures that the job is done accurately and efficiently, minimizing any potential future issues. Whether you opt for licensed plumbers, hvac technicians, or home improvement contractors, their experience and expertise will guarantee a reliable and functional tankless water heater system for your home.

Factors To Consider When Hiring A Professional

When it comes to installing a tankless water heater, it’s essential to hire a professional who knows what they’re doing. Hiring someone without the proper knowledge and experience can result in a faulty installation, which can be both costly and dangerous.

Here are some factors to consider when hiring a professional for your tankless water heater installation:

Licensing And Certifications Of The Installation Professionals

  • Ensure that the professional you hire is licensed and certified to install tankless water heaters. This ensures that they have received the necessary training and have met the required standards to carry out the installation.
  • Check if the professional holds the relevant state or local licenses, as well as any additional certifications from recognized industry bodies. Having the right credentials demonstrates their expertise and commitment to quality workmanship.

Experience And Expertise With Tankless Water Heater Installations

  • Look for professionals who have extensive experience specifically in installing tankless water heaters. This technology is different from traditional water heaters, so it’s crucial to hire someone who is well-versed in its installation requirements.
  • A professional with years of experience will have encountered a variety of scenarios and can handle any challenges that may arise during the installation process. Their expertise will ensure that your tankless water heater is installed correctly and performs optimally.

Reviews And Ratings From Previous Customers

  • Before making a decision, take the time to research and read reviews from previous customers. This will give you a good idea of the level of service and professionalism you can expect from the installation professional.
  • Check online platforms, such as review websites and social media, to see what customers have to say about their experiences. Look for consistently positive reviews and high ratings, as this indicates that the professional has a track record of customer satisfaction.

Remember, when hiring a professional to install your tankless water heater, licensing, experience, and customer feedback are crucial factors to consider. By choosing the right professional, you can have peace of mind knowing that your tankless water heater installation is in capable hands.

Diy Installation Of Tankless Water Heaters

Pros And Cons Of Diy Tankless Water Heater Installations

Installing a tankless water heater can be an appealing project for those who enjoy tackling home improvement tasks themselves. Diy installations have their advantages and disadvantages, and it’s crucial to weigh them before taking on this project. Here are some key points to consider:

  • Pros of diy tankless water heater installations:
  • Cost savings: Hiring a professional plumber for installation can be expensive, and opting for a diy approach can help save money.
  • Sense of accomplishment: Completing a diy project successfully can provide a rewarding sense of achievement.
  • Flexibility: You can work on the installation at your own pace, fitting it into your schedule.
  • Cons of diy tankless water heater installations:
  • Complex installation process: Installing a tankless water heater requires expertise and knowledge of plumbing and electrical systems. It may be challenging for those without prior experience.
  • Potential mistakes: Diy installations increase the risk of errors during setup, which can lead to issues with performance, efficiency, or even safety hazards.
  • Warranty concerns: Some manufacturers may void the warranty if the unit is not installed by a licensed professional.

Considering these pros and cons can help you make an informed decision about whether a diy tankless water heater installation is suitable for your situation.

Understanding The Complexity Of The Installation Process

Before diving into a diy tankless water heater installation, it is imperative to understand the complexity of the process. Here are some key points to be aware of:

  • Plumbing knowledge: Installing a tankless water heater requires a good understanding of plumbing systems, including water supply lines, venting, and drainage. Without this knowledge, it may be challenging to properly connect and configure the unit.
  • Electrical requirements: In addition to plumbing knowledge, a diy installer must have a solid understanding of electrical wiring. Tankless water heaters often require dedicated circuits and adequate electrical capacity. Failure to handle this aspect correctly can lead to electrical hazards or even damage to the unit.
  • Municipal codes and permits: Diy installations must comply with local building codes, which vary from one jurisdiction to another. It is essential to research the specific requirements and obtain any necessary permits before proceeding with the installation.
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Safety Precautions And Necessary Tools For Diy Installations

When attempting a diy tankless water heater installation, it is vital to prioritize safety and have the right tools on hand. Here are some important considerations:

  • Safety precautions:
  • Turn off the power supply to avoid electrical shocks.
  • Shut off the water supply and release any built-up pressure in the existing system.
  • Use proper personal protective equipment, such as gloves and safety glasses, when working with plumbing and electrical connections.
  • Necessary tools for diy installations:
  • Adjustable wrench or channel locks to tighten and loosen fittings.
  • Pipe cutter or hacksaw to cut and resize pipes if needed.
  • Pipe thread sealant or teflon tape for leak-free connections.
  • Voltage tester to ensure the power is off before working on electrical connections.
  • Drill and appropriate bits for mounting the unit securely.

Having a good understanding of safety precautions and gathering the necessary tools will contribute to a smoother and safer diy installation process.

Remember, while a diy tankless water heater installation can be gratifying, it’s important to evaluate your own skills, knowledge, and comfort level before deciding to take on this project. If you’re unsure or uncomfortable with any aspect of the installation, it is always recommended to seek professional assistance to ensure a safe and efficient installation.

Steps Involved In Installing A Tankless Water Heater

Tankless water heaters have gained popularity in recent years due to their energy efficiency and convenience. If you’re considering installing a tankless water heater in your home, it’s important to understand the steps involved in the installation process. This article will guide you through the necessary tasks, from assessing your plumbing and electrical systems to selecting the right size and type of tankless water heater, and preparing the installation area.

Let’s dive in!

Assessing The Existing Plumbing And Electrical Systems

Before installing a tankless water heater, it’s crucial to assess your home’s plumbing and electrical systems to ensure they can support the new unit. Here are the key points to consider:

  • Plumbing assessment:
  • Check the size and condition of your existing water supply lines and gas lines (if applicable).
  • Ensure that the water pressure and flow rate are sufficient for the tankless water heater.
  • Determine if any additional plumbing modifications are needed to accommodate the new unit.
  • Electrical assessment:
  • Confirm that your electrical system has the capacity to handle the power requirements of the tankless water heater.
  • Check if additional wiring or circuit breakers are necessary to meet the electrical demands of the unit.

Selecting The Right Size And Type Of Tankless Water Heater

Choosing the appropriate size and type of tankless water heater is crucial for optimal performance and energy efficiency. Consider the following points:

  • Calculate the flow rate:
  • Determine the total hot water demand in your household by adding up the flow rates of all the fixtures and appliances that require hot water simultaneously.
  • Select a tankless water heater with a flow rate that can meet your calculated demand to ensure continuous hot water supply.
  • Consider the type of tankless water heater:
  • There are two types of tankless water heaters: Gas-powered and electric.
  • Gas-powered units offer higher flow rates and are generally recommended for larger households with higher hot water demands.
  • Electric units are more compact and easier to install, making them suitable for smaller households or areas with limited space.

Preparing The Installation Area And Necessary Connections

Once you’ve assessed your plumbing and electrical systems and chosen the right tankless water heater, it’s time to prepare for the installation itself. Here’s what you need to do:

  • Determine the installation location:
  • Find a suitable location near the main water and gas supply lines (if applicable) and close to the fixtures and appliances that require hot water.
  • Ensure there is enough space for the tankless water heater and necessary clearances for ventilation and maintenance.
  • Install necessary connections:
  • Connect the tankless water heater to the water supply lines and gas lines (if applicable), ensuring proper fittings and without any leaks.
  • For electric units, connect the unit to the electrical system following manufacturer’s instructions and local electrical codes.
  • Set up proper venting (for gas units):
  • Install suitable venting to safely remove combustion gases produced by the gas-powered tankless water heater.
  • Follow local building codes and manufacturer’s guidelines for venting requirements.

By following these steps and guidelines, you can successfully install a tankless water heater in your home. However, it’s important to note that professional installation is highly recommended for safety and optimal performance. Don’t hesitate to reach out to a licensed plumber or hvac technician for assistance.

Enjoy the benefits of endless hot water and energy savings with your new tankless water heater!

Common Challenges And Troubleshooting Tips

Tankless water heaters are becoming increasingly popular for their energy-efficient design and endless supply of hot water. But who exactly is responsible for installing these modern appliances? In this section, we’ll explore the common challenges that both homeowners and professionals face during tankless water heater installation, along with some handy troubleshooting tips to overcome these hurdles.

Dealing With Gas Or Electrical Issues During Installation

Installing a tankless water heater requires careful attention to detail, especially when it comes to gas or electrical connections. Here are some key points to keep in mind:

  • Gas-related challenges:
  • Ensure that the gas supply is turned off before starting the installation process.
  • Verify that the size of the gas line is adequate to handle the increased demand of a tankless water heater.
  • Check for any gas leaks by using a mixture of soapy water and applying it to the connections. Look for bubbles that indicate gas leakage.
  • Electrical challenges:
  • Verify that the electrical supply is turned off and take necessary precautions to avoid electric shocks during the installation.
  • Check the voltage and amperage requirements of the tankless water heater to ensure compatibility with the existing electrical system.
  • Securely connect the wires according to the manufacturer’s instructions and ensure proper grounding.
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Addressing Water Pressure And Flow Rate Problems

Maintaining the optimal water pressure and flow rate is crucial for the efficient operation of a tankless water heater. Here are a few troubleshooting tips to overcome these common issues:

  • Low water pressure:
  • Check the main water supply line for any clogs or obstructions that may be affecting the flow.
  • Clean the aerators or showerheads, as they can accumulate minerals and restrict the water flow.
  • Consider installing a pressure regulator if the water pressure is consistently low throughout the house.
  • Inconsistent flow rate:
  • Inspect the inlet filter and flush it out to remove any debris or sediment that may be causing blockages.
  • Verify that the tankless water heater is properly sized for the water demands of your household.
  • Consult a professional plumber to assess the plumbing system and identify any underlying issues causing inconsistent flow rates.

Troubleshooting Common Errors And Malfunctions

Even with careful installation, tankless water heaters can sometimes encounter errors or malfunctions. Here are a few troubleshooting tips to help resolve these issues:

  • Error codes:
  • Familiarize yourself with the manufacturer’s error code guide to identify the specific issue indicated by the led display.
  • Follow the suggested troubleshooting steps provided by the manufacturer to address the error code.
  • If the issue persists, contact customer support or a professional plumber for further assistance.
  • Lime scale buildup:
  • Tankless water heaters can develop lime scale buildup over time, which can hinder their performance.
  • Regularly descale the unit to remove mineral deposits and maintain optimal efficiency.
  • Follow the manufacturer’s recommendations regarding descaling solutions and frequency.
  • Lack of hot water:
  • Check if there are any water leaks or obstructions in the plumbing system that may be affecting the flow of hot water.
  • Verify that the temperature settings on the tankless water heater are appropriately adjusted to meet your desired hot water needs.
  • Ensure that the unit is properly sized for your household’s hot water demands.

By understanding the common challenges and having troubleshooting tips at hand, homeowners and professionals can navigate the installation and maintenance of tankless water heaters more effectively. Remember, it is always recommended to consult with a certified professional for complex installations or persistent issues to ensure safety and optimal performance.

Maintenance And Care For Tankless Water Heaters

Tankless water heaters are a convenient and efficient alternative to traditional tank-based systems. They provide hot water on demand and can help homeowners save on energy costs. However, like any other appliance, tankless water heaters require regular maintenance and care to ensure they operate smoothly and last for years to come.

Here are some key tips for maintaining and caring for tankless water heaters:

Regular Flushing And Descaling To Prevent Mineral Buildup

Mineral buildup is a common issue in tankless water heaters, especially in areas with hard water. Over time, mineral deposits can accumulate in the heat exchanger, hindering its performance and efficiency. To prevent this, regular flushing and descaling should be performed.

Here’s what you need to do:

  • Flush the system at least once a year to remove any sediment, debris, or mineral deposits.
  • Follow the manufacturer’s guidelines for flushing. This usually involves connecting a pump to the unit and running a vinegar or descaling solution through the system.
  • After flushing, make sure to thoroughly rinse the system with clean water to remove any leftover residue.
  • Flushing and descaling can be performed by a professional or a knowledgeable homeowner. If you’re unsure, it’s best to hire a professional to do the job.

Checking For Leaks And Inspecting The Ventilation System

Regularly inspecting your tankless water heater for leaks is crucial to avoid water damage and ensure its proper functioning. Additionally, the ventilation system should be inspected to guarantee the safe removal of combustion gases. Here are the key points to consider:

  • Check for any signs of leakage, such as water pooling around the unit, dampness or discoloration on the walls or floor, or a drop in water pressure.
  • Inspect the pressure relief valve and drain line to ensure they’re not blocked or leaking.
  • Examine the ventilation system for obstructions, such as debris or bird nests, that could impede the flow of exhaust gases.
  • Ensure the ventilation system is properly sized and installed according to the manufacturer’s guidelines.
  • If you notice any leaks or issues with the ventilation system, it’s crucial to address them promptly and seek professional assistance if needed.

Following Manufacturer Guidelines For Maintenance Tasks

Manufacturers provide specific guidelines for maintaining their tankless water heaters, and it’s crucial to adhere to these recommendations. Here’s what you should do:

  • Read the manufacturer’s instruction manual thoroughly and familiarize yourself with the recommended maintenance tasks and intervals.
  • Follow the instructions for cleaning and replacing filters, if applicable.
  • Perform any required maintenance tasks, such as lubricating moving parts or inspecting electrical connections, as specified by the manufacturer.
  • Keep track of the maintenance performed, including dates and any issues encountered, for future reference.

By following these maintenance and care tips for tankless water heaters, you can ensure their longevity, efficiency, and reliable performance. Regular flushing and descaling, checking for leaks, inspecting the ventilation system, and following manufacturer guidelines will help you enjoy the benefits of hot water on demand without any hassle.

Remember, if you’re unsure or uncomfortable performing any maintenance tasks yourself, it’s always best to consult a professional.


After considering the various factors involved in installing a tankless water heater, it becomes clear that this task requires the expertise of a professional. With their knowledge and experience, licensed plumbers are best suited for the job. They possess the necessary skills to assess the existing plumbing system, determine the appropriate location for installation, and ensure all safety measures are followed.

By hiring a professional, homeowners can avoid potential pitfalls such as improper sizing, inadequate venting, or incorrect electrical connections. Moreover, licensed plumbers can provide valuable advice on choosing the right tankless water heater model to meet the household’s hot water demands.

Investing in professional installation not only guarantees a functional and efficient tankless water heater system but also eliminates the risk of costly repairs or damages in the future. Ultimately, it is important to prioritize quality and safety by entrusting the installation of a tankless water heater to a licensed professional.


I am a mechanical engineer and love doing research on different home and outdoor heating options. When I am not working, I love spending time with my family and friends. I also enjoy blogging about my findings and helping others to find the best heating options for their needs.