Finned coils are used in buildings for heating air at winter and for cooling at summer. Two or more coils can be used to recover energy from the exhausted air to fresh air, thus saving energy and costs.

Ekocoil uses highly efficient corrugated aluminum fins to enhance the heat transfer from air to liquid. This makes the coil very compact and economical. Optionally, fins can be made of copper. Tubes inside the coil are made of copper