Tankless water heaters are expensive to repair because they contain very few parts. Most of the cost of repairing a tankless water heater goes into labor, which is why it's important to find a reputable and qualified technician to do the work. Tankless water heaters also last longer than traditional tank-type water heaters, so the cost of repairs usually doesn't outweigh the benefits of having one in your home. If you're thinking about getting a tankless water heater repaired, be sure to get an estimate from a certified technician before making a decision.

Tankless water heaters are more expensive to repair because they have more parts. The typical repair for a tankless water heater includes replacing the igniter, thermostat, and gas valve. Also, since tankless water heaters don't have tanks, the technician has to check the entire system to make sure everything is working properly. So if you're thinking of getting your tankless water heater repaired, be prepared to spend a little extra money.