Profile: D&M Service Company, Inc. specializes in providing heating and cooling solutions. We offer industrial and commercial HVAC products. Our products include geothermal heat pumps, gas furnaces, energy products, air conditioners, dual fuel systems, air cleaners, humidifiers, dehumidifiers, zoning systems, ventilators, UV lights and thermostats. Our geothermal systems are the most energy-efficient, eco-friendly, and inexpensive conditioning systems. Geothermal heat pump only uses electricity to move heat, not produce it. A geothermal or "ground source" heat pump is an electrically-powered device which makes use of the natural heat storage capability.