: My husband just installed a water heater under the sink iin the kitchen. He has tired pipe dope aadn teflon tape, and tighted the fittings until he finally had to replace them but there is still a very small leak he can't seem to stop. What do you suggest?

Theresa,
First, remove the pipe dope and Teflon tape.
The fittings for the Insinkerator use compression fittings.
If the tubes do not go far enough into the fittings, they will leak. You may need to raise the tank a bit higher under the cabinet.
Terry

• Insinkerator water heaters