Pre-1990 ranches in central and south Phoenix were often finished with a swamp cooler on the roof. A heat pump sized for 110-degree afternoons takes both heating and cooling.
Ask for a heat pump sized to keep your home warm on the coldest usual winter day. The price uses the AZ and utility programs your address qualifies for. No sales call, no information sold, no pressure.
This temperature is a regional estimate for this market. Ask your installer to check it for your address.
Size the heat pump to the heating design temperature on this page.