Replacing 2 systems with a modulating variable speed unit. Dual fuel heating. Adding zone board and dampers to allow control of each floor independently. Replacing all the registers in the house. Adding 5 inch filtration to system. Increasing upstairs return duct. Adding airflow volume control dampers to downstairs duct runs. Installing Wi-Fi thermostats. Permits included. 1 year free maintenance included. 10 years parts/ 1 year labor. $259.62 for 180 months @ 7.99%