Installing a tankless water heater can be a great way to save energy, space, and money in the long run. However, to ensure a smooth and successful installation process, it's crucial to avoid common mistakes that could lead to issues down the line. In this guide, we'll highlight the top mistakes to avoid when installing a tankless water heater to help you achieve a seamless setup.

1. Choosing the Wrong Size

One of the most common mistakes homeowners make when installing tankless water heaters is choosing the wrong size unit for their needs. To avoid this mistake, consider the following factors:

• Calculate the peak hot water demand in your home to determine the appropriate size of the tankless water heater.
• Consider the number of fixtures and appliances that will be using hot water simultaneously.
• Consult with a professional to ensure you select the right size unit for your household's needs.

2. Skipping Proper Ventilation

Proper ventilation is essential for a tankless water heater to function efficiently and safely. Avoid the mistake of skipping proper ventilation by:

• Following the manufacturer's guidelines for venting requirements.
• Ensuring there is an adequate air supply for combustion and ventilation of the unit.
• Hiring a professional to install the venting system to avoid any safety hazards.

3. Neglecting Water Hardness Levels

Water hardness can have a significant impact on the performance and lifespan of a tankless water heater. To prevent issues related to water hardness, consider the following:

• Assess the hardness of your water supply and install a water softener if necessary.
• Regularly maintain the water softener to prevent mineral buildup in the tankless water heater.
• Consult with a water treatment professional to determine the best solution for your water quality issues.

4. Improper Electrical or Gas Connection

Incorrect electrical or gas connections can pose serious safety risks and cause damage to your tankless water heater. Avoid this mistake by:

• Hiring a licensed professional to handle the electrical or gas connection of the unit.
• Ensuring all connections comply with local building codes and regulations.
• Regularly inspecting the connections for any signs of damage or wear.

5. Failing to Conduct Regular Maintenance

Regular maintenance is key to ensuring the longevity and efficiency of your tankless water heater. Avoid the mistake of neglecting maintenance tasks by:

• Flushing the unit regularly to remove any mineral buildup or debris.
• Checking for leaks, corrosion, or other signs of wear and tear.
• Following the manufacturer's recommended maintenance schedule.

6. Not Considering Installation Location

The location of your tankless water heater can impact its performance and efficiency. Avoid installation mishaps by:

• Choosing a well-ventilated area that allows for easy access to the unit for maintenance.
• Avoiding installation in unconditioned spaces or areas prone to freezing temperatures.
• Ensuring the unit is installed away from flammable materials or sources of heat.

7. Ignoring Permits and Regulations

Failure to obtain the necessary permits or comply with local regulations can lead to costly fines and safety hazards. Avoid this mistake by:

• Checking with your local building department to determine if a permit is required for the installation.
• Ensuring the installation is completed by a licensed professional who is familiar with local codes and regulations.
• Obtaining any inspections required by your local jurisdiction to verify the installation meets safety standards.

8. Overlooking the Need for Professional Installation

While DIY projects can be rewarding, installing a tankless water heater is best left to the professionals. Avoid the mistake of overlooking the need for professional installation by:

• Hiring a licensed and experienced plumber or HVAC technician to install the unit.
• Ensuring the professional is familiar with tankless water heater systems and manufacturer guidelines.
• Requesting references or reviews before hiring a professional to ensure quality workmanship.