The Grundfos UPS15-50 130 Selectric MK3 Circulator Pump in red is an electric pump designed for use with storage tank water heaters and boilers. With a voltage of 240V and an amperage of 15A, this indoor pump is energy-efficient with a rating of B. Its water temperature range is 82°C, making it suitable for efficient heating systems. The side water connection location and power of less than 100W make it a reliable choice for heating systems in the home.