Geothermal Heating & Cooling: Keizer's Choice! To be perfectly accurate, let's put it this way: more and more Keizer residents are coming to the same conclusion that geothermal is the smarter heating and cooling choice. And we're helping them see that. We're Mill Creek Heating. And we understand all about the benefits of geothermal heating and cooling. After all, we've been installing and servicing geothermal systems for years. Why are more people switching to geothermal? For starters, Keizer is located in an area with ideal soil conditions for geothermal installation. We've also got the kind of fluctuating temperature extremes that let a geothermal system display its year-round comfort potentiality to best effect. Think about the savings, too. Our Geothermal Savings Calculator can give you a good idea of what they'd be for your family. Learn more. Contact Mill Creek Heating, your Keizer, Oregon geothermal authority.