WASHINGTON, DC:  3501 13th St. NW is the latest address to have a solar thermal system installed.  The multi-family housing unit now has solar collectors on the roof, installed by Maryland solar contractor Solar Energy Services, Inc. to pre-heat the building’s existing conventional water heater.

The solar system includes 32 solar thermal collectors, south-facing on the building’s roof, closed-loop plumbed to 2, 806 gallon tanks.  The system is expected to significantly reduce the building’s utility bill by offsetting their water heating load with solar.