I contacted 6 total HVAC co.’s for a complete system upgraded. All offered similar design suggestions. Burkholder’s provided a different design option that ultimately made the most sense. It was not the least expensive option but it was the best long-term option which to our family meant the lowest long-term cost. 6 months after installation and we are still very happy with the decision we made to utilize BH’s and we will again (if ever needed). Many thanks to everyone who gave us a sense of comfort from sales through install.