This high efficient hvac system we installed in a shouse near Platte SD includes a Lennox 26 seer A/C, Lennox 99% efficient 90K BTU propane converted furnace with 2 zone dampers, 2 speed HRV (heat recovery ventilator), Lennox S40 ultra smart thermostat, and a Lennox zone thermostat. These high efficient systems have the capability to supply the exact amount of heating/cooling needed to ensure the minimal amount of energy usage necessary. On the hydronic side there is a Navien combi 2 zone boiler/water heater that will have its own post once completed.