Assertion: water heater's energy factor | /r/HasProperty | achieved using intermittent pilot
Facets:
value: usually
type: TEMPORAL
value: with baffle blowers
type: OTHER
value: with an automatic flue damper
type: OTHER
value: with power venting
type: OTHER
Source sentences:
text: Energy Star-qualified natural gas and propane tank water heaters (as of September 2010) have energy factors of 67% or higher, which is usually achieved using an intermittent pilot together with an automatic flue damper, baffle blowers, or power venting.