Yes, tankless water heaters can be repaired. However, it's important to note that tankless water heaters are more expensive to repair than traditional water heaters. If your tankless water heater is not working correctly, it's important to call a professional to diagnose and repair the issue. Some common problems that can occur with tankless water heaters include insufficient hot water production, poor flow rate, and improper installation.

It depends. If the tankless water heater is electric, it can be repaired. If the tankless water heater is gas, it may be able to be repaired, or you may need to replace it. If your tankless water heater needs repair, you should contact a professional technician experienced in repairing tankless water heaters. Do not try to repair the tankless water heater yourself. Attempting to repair a tankless water heater without proper training and experience could result in serious injury.