All exterior mechanical equipment, including units for heat, ventilation, air-conditioning, pool pumps and accessories, heat pumps, other than individual air-conditioners to serve a building property shall be located in the rear yard and/or on the top story of either the principal or accessory buildings, either inside or outside. If installed in the yard, they shall comply with the rear yard and setback provisions. If installed on the buildings they shall not be visible from the front or side street or from ground level of immediately adjacent properties and shall be located behind a solid non-transparent physical buffer such as a parapet wall or solid short fence so as to dampen noise effects on neighboring properties. Such wall or fence shall not be higher than the ridgeline of the structure to which it is placed.

Permanently installed generators shall be located in the rear yard, and shall be installed at grade.