The Grundfos Max-E Boost is a single pump variable speed packaged cold water booster set, designed as a compact and cost effective solution for pressure boosting of clean cold water. • Boosting to pressurised hot and cold water systems in large domestic properties with three or more bathrooms, and light commercial buildings. • Small irrigation systems with above ground storage tank. • Water transfer to high level tanks. The Max-E Boost uses Grundfos’ own variable speed pump motor technology, to maintain a constant discharge pressure up to a maximum setting of 4.5bar