Assertion: water heater's efficiency | /r/HasProperty | sealed combustion
Facets:
Source sentences:
text: Many high-efficiency (sealed combustion) water heaters can become leakers without any advance visual signs.
text: High-efficiency (sealed combustion) water heaters do leak, but these units have the combustion chambers at the bottom of the unit, so when an internal tank leak develops it leaks into that combustion chamber under the tank and can’t be seen from the outside.
text: Note: All high-efficiency (sealed combustion) water heaters have blower motors.