Circuit Solver® is a self-actuating thermostatic balancing valve that automatically and continuously maintains a set water temperature at the end of each domestic hot water supply, without balancing or re-balancing. Putting an end to hot water complaints from users and management, it solves delayed hot water delivery, while eliminating costly manual balancing procedures. Circuit Solver® allows only the water that cools below the set point to flow to the return, saving you money in materials, electricity, water usage, and overall lifetime operation.