Triangle Tube is an innovator and industry leader in the manufacture and supply of quality stainless steel hot water heating equipment, and has been keeping families warm since 1946. Founded in Blackwood, New Jersey, the company began by supplying tankless coils to boiler manufacturers in the United States, and was the first company to bring fire tube heat exchangers to the residential market, a distinction that remains central to their identity and legacy to this day.
Over the decades, Triangle Tube built a strong reputation for engineering reliable, high-efficiency heating and hot water products. Their product lineup grew to include gas condensing boilers, combination boilers, indirect-fired water heaters, stainless steel storage tanks, and heat exchangers for a wide range of applications including radiant floors, snow melting, swimming pools, and spas. The Prestige series of high-efficiency condensing boilers was first introduced to the market in 2004, becoming one of the brand's most well-known product lines.
Triangle Tube's industry-best "No Fault Forward" manufacturing process includes over 200 quality checks during production. If a product fails a check, it is corrected before being allowed to advance to the next production step, ensuring that no fault or flaw goes unaddressed.
In 2018, Triangle Tube was acquired by Groupe Atlantic, a company founded in 1968 in Paris, France, that has grown into a global designer and manufacturer of boilers, water heaters, ventilation and air conditioning, and heat pumps. Under this ownership, Triangle Tube continued to develop new products, including the Instinct series condensing boiler launched in 2019 and the Smart 316 stainless steel indirect water heater introduced in 2020.
It is worth noting for those researching Triangle Tube for purchasing purposes that Triangle Tube ceased operations effective November 3, 2025. Spare parts are being made available through stocking distributors while supplies last, though all purchases made after that date carry no warranty. Despite its closure, Triangle Tube's nearly eight decades of innovation left a lasting mark on the hydronic heating industry in North America.
