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Tankless Water Heater Installation: A Guide and Cost Breakdown

Outdoor Tankless Water Heater Installation: A Guide and Cost Breakdown

Installation Tips and Financial Considerations of a Tankless Water Heater

Tankless water heaters are becoming increasingly popular for homeowners who want to save money on their energy bills and have a constant supply of hot water. Unlike traditional tank-style water heaters that store and heat water continuously, tankless water heaters heat water on demand, providing a more energy-efficient solution for your home's hot water needs. 

How To Install A Tankless Water Heater Outside

Disconnect Your Old Water Heater: 

The first step in installing a tankless water heater outside is to disconnect your old water heater. Turn off the power supply or gas to the unit, and shut off the water supply to the tank.

Find An Appropriate Outdoor Installation Space: 

Choose a location for your tankless water heater that is away from direct sunlight, and in an area where it will not be exposed to extreme temperatures or harsh weather conditions.

Mount Your Tankless Water Heater: 

Install the mounting brackets on the wall where you plan to mount your tankless water heater. Make sure the brackets are level and securely fastened to the wall.

Connect Your Unit To Your Home’s Water Supply: 

Attach the water supply lines to the tankless water heater, making sure to follow the manufacturer's instructions for proper installation.

Connect Your Power Supply and Gas Line (If Gas Operated) To The New Unit: 

Connect the electrical wires or gas line to the tankless water heater according to the manufacturer's instructions.

Turn On And Test: 

Turn on the water supply and power or gas supply to the tankless water heater. Test the unit by running hot water through your home's faucets to ensure that the water is flowing properly and the unit is working efficiently.

tankless water heater

Cost Of Tankless Water Heater

When considering a tankless water heater, it's essential to understand the various cost factors involved. In this informative guide, we break down the key considerations that can impact the overall cost of a tankless water heater. From initial purchase and installation expenses to long-term savings and maintenance, we provide valuable insights to help you make an informed decision.

Initial Cost:
Tankless water heater prices vary based on the size and type of unit. Generally, expect a range of $500 to $4,000 for the unit itself, depending on your hot water requirements.

Long-Term Cost:
While tankless water heaters have a higher initial cost, they can yield long-term savings on energy bills due to their higher efficiency and on-demand heating.

Cost of Professional Installation:
Professional installation costs typically range from $500 to $1,500, depending on the complexity of the installation and any necessary modifications to your existing plumbing system.

Cost of Maintenance:
Tankless water heaters require regular maintenance, including flushing to remove mineral buildup and periodic replacement of parts. These costs should be factored into your overall budget.

Cost of Professional Maintenance:
Opting for professional maintenance services can cost around $100 to $200 per year, ensuring optimal performance and extending the lifespan of your tankless water heater.

Operating Costs:
The operating costs will vary based on the size of the unit, the type of heater (electric, gas, propane), and the fuel source available in your home. Consider the long-term savings potential and efficiency of different options.

Size of Unit:
Select a tankless water heater that suits the hot water needs of your household to avoid overpaying for excessive capacity or experiencing insufficient hot water supply.

Location and Accessibility:
The location and accessibility of the installation site can impact installation costs. Factors like venting requirements, distance from the power source, and available space may influence the overall expense.

Fuel Source:
The choice of fuel source—electricity, natural gas, propane—will affect the operating costs of the tankless water heater. Consider the availability and cost of each fuel option in your area.

Frequently Asked Questions

How much energy can I save by using a tankless water heater?

Tankless water heaters can be up to 30% more energy-efficient than traditional tank water heaters, resulting in lower energy bills over time.

Do tankless water heaters require special maintenance?

Tankless water heaters require regular maintenance, including flushing the unit and checking the unit's components for wear and tear.

Is it necessary to flush a tankless water heater?

Yes, it is recommended to flush a tankless water heater at least once a year to remove any mineral buildup that can affect the unit's performance.

Can a tankless water heater supply enough hot water for my needs?

Yes, a properly sized tankless water heater can supply enough hot water for the needs of a household, as long as the unit is sized correctly and installed properly.

How does a tankless water heater work?

A tankless water heater heats water on demand, using a heat exchanger to quickly raise the temperature of the water as it passes through the unit.



Tecasa Tankless Water Heaters can be a great investment for homeowners looking to save money on their energy bills and have a constant supply of hot water. Installing a tankless water heater outside can provide additional space and increase energy efficiency. By considering the cost factors outlined in this article, homeowners can make an informed decision when selecting a tankless water heater for their homes.


At Tecasa, we understand the importance of having a reliable and efficient water heating system for your home or business. Installing a tankless water heater outside can be a great option for those looking to save space and increase efficiency. We recommend consulting with a professional plumber to ensure proper installation and safety measures. The cost of a tankless water heater can vary depending on factors such as size, type, and installation. However, the long-term benefits and energy savings make it a worthwhile investment. At Tecasa, we are committed to helping our customers find the best solution for their water heating needs.