Living where I do a heat pump is the best possible system, but with a heat pump system you get both heating plus cooling in a single unit, then the unit works by moving heat energy either inside or outside of the home. It acts as an air conditioner in the Summer by moving air through coolant. The reverse happens in heating mode; You don’t need to burn plus churn fuel. You don’t need to install HVAC duct. All it takes is an outdoor air compressor plus various mounted indoor air handlers. The devices are installed on exterior walls plus wiring plus refrigerant tubes are fed to the outdoor unit. The way a heat pump provides weather conditions control is quite efficient. It is also scrub plus environmentally friendly. In fact, it is recognized to be so beneficial that the government offers tax benefits when you rely on a heat pump system. The only con is that the heating mode struggles to be effective in temperatures below forty degrees. At this point there is simply no heat energy to locate plus transport indoors. In colder weather conditionss people rely on dual fuel or hybrid boilers which combine a heat pump plus a heater. The heat pump works most of the year plus the heating system tags in when the temperatures drop. Thankfully where I am at I can just get with a heat pump system. After a few months of use the heat pump quickly pays back itself. I feel it is the most cost effective heating plus cooling system on the market at this point.