Completed our HVAC project today inclusive of a York multistage high efficiency heat pump with a matching variable speed drive electric furnace, full metal main ducting and flexible branch ducting 100% insulated, refrigerant lines, high and low voltage wiring with service disconnects, an auxiliary drain pan below indoor unit with two water safety devices, Merv11 air filtration cabinet, all return grilles and supply registers, and a multistage programmable auto changeover thermostat.