HOW IS HYDROMX INSTALLED? June 30, 2022 By The existing heat transfer fluid in a closed-loop system is drained and replaced with Hydromx. One pipefitter can complete installation in usually one to two days. Hydromx will arrive on-site in concentrate to be mixed with tap water per Hydromx’s installation instructions. Hydromx challenges the industry to identify another energy-saving product that is as fast and easy to install with similar energy-saving benefits.