We're the Geothermal Source in Mallala! Mallala homeowners in the know turn to Mill Creek Heating for all their geothermal heating and cooling needs. They count on us to provide not only the proper installation and service but also the experience to help them get the most from their geothermal systems. Thinking about a geothermal system of your own? Give our nifty little Geothermal Savings Calculator a whirl. Just fill-in your data and stand in awe of the results. Then, contact us, the Mallala, Oregon, geothermal experts at Mill Creek Heating.