Assertion: gas boiler | /r/HasProperty | designed for turndown ratios of 10
Facets:
value: to no loss in combustion efficiency
type: OTHER
value: with little
type: OTHER
Source sentences:
text: Gas boilers can be designed for turndown ratios of 10-12 with little to no loss in combustion efficiency, while some gas burners may achieve a ratio of 35.[unreliable source?]