EntityQ1453244· pop 12· linked from 454 articlesductSign in to saveconduit to direct airflow, used in heating, ventilation, and air conditioningConnectionsdamperEntityRadiant heating and cooling systemsEntitymechanical fanEntitystandard temperature and pressureEntitycompressorEntityQ460173Entityheating, ventilation, and air conditioningEntitybuilding automationEntityheat recovery ventilationEntitycopperEntityaluminiumEntityMontrealEntityknifeEntitythermodynamicsEntityconcreteEntitysmokeEntityhydrocarbonEntitymechanical engineeringEntitydigital object identifierEntityInternational Standard Serial NumberEntityCategoriesHeating, ventilation, and air conditioning