Daniel M Troth President/CEO at GreenTech Construction More about Daniel M Troth Building high-performance green homes in the Central Ohio region. Solar panels, geo-thermal HVAC heating and cooling, fresh air mechanical ventilation utilizing Energy Recovery Ventilators, triple-pane windows, and super insulated building envelopes are just some of the leading edge technologies employed in our homes that exceed the Department of Energy's Zero Energy Ready Home performance standards.