The Altherma Monobloc heat pump system by Daikin has a built in reversing valve so summertime air conditioning is included through a separate fancoil unit. Integrate with a boiler for larger applications and add domestic hot water for low energy consumption. "We installed the Altherma at Desert Rain in Bend. I was so impressed with the performance that I put it in my house. Now my radiant floors are heated without using any propane and the electrical increase has been minimal.
Compared to GeoThermal system installations with deep wells or ground loops, the Air to Water Altherma uses the air surrounding the unit. No drilling and no excavation required. Saves thousands of dollars.