Every once in a while two separate technologies come together so fluently that they dramatically improve the other’s performance and application possibilities. Such is the case with a commercial rooftop energy recovery ventilator (ERV) and a ductless mini-split heat pump system. The real benefactors of the union are the 350 members at the Cornerstone Presbyterian Church in the town of California, Md.
The design phase for a new wing of the church was a six-month process. Several contractors, reps, and engineers brought different views about how to condition the single-story, 14,000-square-foot addition, mainly comprised of classroom space.