PRODUCT GUIDE Ground- and Water-Source Heat Pumps The modular WaterFurnace CLW Chiller heat pump can produce hot and cold water simultaneously from its scroll compressors. Photo: WaterFurnace International, Inc. Behind the recommendations Related articles Behind the recommendations Related articles Ground- and Water-Source Heat Pumps Don’t call it geothermal! The most efficient ground-source and water-source heat pumps, both residential and commercial More about Ground- and Water-Source Heat Pumps New Ground-Source Heat Pumps Saving Energy and Dollars in Commercial Applications WaterFurnace’s CLW Chiller “geothermal” heat pump also uses excess heat and cooling within a building to provide energy-efficient HVAC. New Guide Helps Avoid Pitfalls in Ground-Source Heat Pump Design Overly complex loop designs and controls limit the commercial applicability of ground-source heat pumps. A new guide shows a better way. Ground-Source Heat Pumps: Tapping the Earth's Mass Ground-source heat pumps take advantage of stable temperatures just below the Earth's crust for energy-efficient heating and cooling.