Summeraire The Summeraire Mfg., Division of Trent Metals Limited was created in 1969 with the manufacture of residential pipe, duct, elbows and fittings for forced air perimeter heating systems. Today, these products have been complemented with the addition of residential registers, oil, wood-oil furnaces, and heat recovery ventilators. Visit Summeraire: http://www.summeraire.com/