With a tri-metal stainless steel heat exchanger and a state-of-the-art proprietary combustion control system, Optum provides industry-leading thermal efficiencies of up to 99%*. The only fully modulating high-efficiency gas unit heater on the market, Optum utilizes a burner control and configuration that allows a 3:1 turndown for precision discharge temperature control that increases life expectancy and allows for reduced cycling. Available in 6 sizes (50 – 400 MBH), Optum brings a whole new sophisticated style to the unit heater arena with a beautiful commercial-grade brushed stainless steel jacket and contrasting black trim. Its corrosion-resistant exterior and double-wall construction provide both durability and increased efficiency through reduced heat loss. Units can […]