New HVAC System on Ringgold Road November 15, 2019 mpnadmin Comments Off on New HVAC System on Ringgold Road New HVAC System on Ringgold Road by mpnadmin | Nov 15, 2019 The HVAC system on Ringgold Rd. was over 20 years old. We converted this home from fuel oil to a heat-pump system with some additional ductwork, for a much more energy-efficient system in less than 2 days.