How to Choose a Tankless Water Heater

How to Choose a Tankless Water Heater

A direct-vent gas unit draws outdoor air in to fuel the burner, and then exhales combustion gases out through a sealed vent. It eliminates carbon monoxide leaks from the heater and prevents indoor water from mixing with combustion gases.

Professional installation is recommended since installing a tankless water heater involves making leak-free water, gas and electrical connections. You may also have to upgrade your circuit breaker panel.


The cost of a tankless water heater varies widely, depending on the unit size and capacity, fuel type, flow rate, installation costs, and energy efficiency. Installing a new water heater requires plumbing and electrical work, which can add to the overall cost of the project. The installation costs also vary based on the size of the unit and whether it is a point-of-use or whole-home model. Additional factors include the price of gas or electricity, installation labor rates, and permit fees.

Choosing the right tankless hot water heater for your home is essential, as you want to make sure that it can accommodate your peak hot-water demand. It is best to hire a professional for the small electric tankless water heater installation of a new water heater, as this is a dangerous project that can cause explosions and release carbon monoxide. A professional plumber charges $75 to $150 per hour on average.

You should consider the installation costs when budgeting for a tankless hot water heater. You will also need to install new gas lines and vents if you are installing a gas model. The cost of these upgrades can run $100 to $600. In addition, you should consider the difference between condensing and non-condensing tankless models. Non-condensing units are less expensive, but they produce acidic condensation that needs to be neutralized.

All tankless water heaters must be vented to the outside. They can be vented through a power vent or direct vent. A power vent draws indoor air and exhausts it out through a wall or duct, while a direct vent draws outdoor air into the duct and exhausts it through a different chamber or duct.

Energy efficiency

A tankless hot water heater is more efficient than its traditional counterparts, and it can save you money on your energy costs. But it’s important to choose a model that is sized properly for your home. You’ll want to consider your hot-water needs, including the number of people in your household and their average usage patterns. You should also consider the space requirements for the unit and your gas or electric hookups.

It’s best to hire a professional plumber for the installation process. This is because it involves a complex plumbing work and electrical connections, which can cause problems if you aren’t a skilled DIYer. In addition, a mistake during the installation can damage your home and void the warranty of the new system.

During the installation process, it’s important to shut off the power and water supply and drain the old heater. It’s also important to properly connect the pipes and install flow and pressure valves. Once all the connections are secure, test the unit to make sure it’s working correctly and that you have hot water. Finally, it’s important to regularly flush your hot water heater. This will help remove sediment from the heat exchanger and improve its efficiency. Ideally, this should be done at least once every three years. It’s a good idea to consult the manufacturer’s manual for specific maintenance instructions and schedule.


The installation process is a major consideration when purchasing a tankless hot water heater. Having the right tools and understanding what is required for the installation will help you make the best choice and avoid potential problems down the road. A professional plumber can save you time, money, and ensure compliance with local regulations. They will shut off the circuit breaker, drain and remove the old heater, and prepare the new one for mounting. They will also determine if the electrical service panel can handle the power requirements of the unit.

Once the installation is complete, a professional will connect the water pipes to the inlet and outlet of the heater. They will use the appropriate fittings to prevent leakage. They will also bleed the system by opening all hot water outlets in the home to remove air from the system. This will improve performance and water flow.

It is important to choose a location for the tankless water heater that is close to the points of use. This will minimize energy waste electric tankless heater and reduce your utility bills. You should also ensure that the area has sufficient space for ventilation and maintenance access. Lastly, you should check that your home’s gas supply is suitable for the unit you’re installing. You may need to upgrade your gas supply if your current lines are too small.


Tankless water heaters are known for their long lifespans and energy efficiency, but they still require regular maintenance to ensure optimal performance. These tasks include flushing, cleaning the filter and examining the ventilation system. It is also a good idea to monitor the water pressure to make sure it stays within the optimum range specified by the manufacturer.

During a maintenance visit, our plumbers will examine the interior components of your unit to make sure they are free from dust and debris. They will also test the pressure relief valve to make sure it’s working correctly. It’s important to inspect the water pipes connected to the heater as well, especially in cold climates where freezing temperatures can cause damage and leaks.

Flushing a tankless water heater is a critical maintenance task that prevents mineral buildup and improves efficiency. Over time, minerals in the water can build up on the heat exchanger and pipes. This hinders efficiency and reduces the life of your water heater.

Our plumbers will drain and flush your tankless water heater to remove these deposits and prevent future problems. They will temporarily shut off the water and gas supply, then connect hoses to the service valves and open them. The hoses will be connected to a bucket or drain where the descaling solution will be drained and recirculated for the recommended amount of time.

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