We found one dictionary that defines the word submerged combustion heater:

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1. submerged-combustion heater: Encyclopedia

▸ Words similar to submerged combustion heater ▸ Usage examples for submerged combustion heater ▸ Idioms related to submerged combustion heater ▸ Wikipedia articles (New!) ▸ Words that often appear near submerged combustion heater ▸ Rhymes of submerged combustion heater ▸ Invented words related to submerged combustion heater