There are a variety of factors that will impact the cost of your installation, so the only way to determine the exact cost to install a tankless water heater is to have a licensed plumber come to your home to assess your current system and hot water needs. The cost to install a tankless water heater in San Antonio ranges from $3,500 to $8,000, with an average cost of $5,200.
Some of the factors that will have an impact on the cost of your installation include:





