Retrofit Fan Solutions for VAC in the Americas Region. Retrofit solutions manufactured in the United States for the American market. Common retrofit projects throughout the Americas region involve replacing existing solutions that use inefficient AC motors or single-phase drive shaft components with highly efficient EC technology. Speed-controlled and programmable solutions are offered, all within the same mechanical footprint. The advantages are manifold: improved energy efficiency, reduced operating costs, and enhanced comfort. EC motors boast superior efficiency levels, surpassing even the stringent IE4.3 standards, making them an eco-friendly and cost-effective choice for retrofitted solutions.