Triangle Tube SMART40 36-Gallon Tankless Coil WH

The **Triangle Tube SMART40** is a high-performance **36-gallon indirect water heater** designed for efficiency, durability, and cost-effective hot water solutions. Built with **exclusive 'Tank-in-Tank' technology**, this unit delivers **abundant domestic hot water** while maintaining the lowest possible operating costs. Ideal for residential and light commercial applications, it integrates seamlessly with existing HVAC systems, eliminating the need for separate water heating equipment.

Engineered with **2″ of high-density polyurethane foam insulation**, the SMART40 minimizes heat loss, ensuring energy efficiency and consistent water temperatures. Its **self-cleaning/self-descaling heat exchanger** reduces maintenance demands, while the **lowest pressure drop in the industry** optimizes system performance. Trusted by professionals for over 60 years, Triangle Tube delivers **stainless steel construction** and proven reliability in both residential and commercial settings.