Geothermal Products in Wilmington O'Brien Service Company offers only WaterFurnace brand geothermal products to the Wilmington, NC area. WaterFurnace has been the most recognized and respected name in the industry for nearly three decades. Every unit is tested before it leaves the manufacturing facility to ensure flawless operation on startup. We combine a commitment to quality installations with WaterFurnace's commitment to quality products - that's the best of both worlds. 7 Series 700A11 41 EER / 5.3 COP The best of the best. Variable capacity system delivers comfort and savings you have to experience to believe. Efficiency Learn more 5 Series 500A11 28 EER / 4.8 COP Some of our best features and efficiencies. Efficiency Learn more 3 Series 300A11 22.3 EER / 4.1 COP 30 years of research, engineering advancements, and manufacturing experience all at a great price point. Efficiency Learn more Synergy3D 25.7 EER / 4.2 COP With the Synergy3D, you’ll enjoy incredible energy savings on your heating and cooling costs while providing hot water for radiant floor heat. Efficiency Learn more 5 Series SAH 23.5 EER / 4.4 COP Smaller, lighter and more efficient than ever. When paired with one of our split systems, a 5 Series SAH Air Handler provides the perfect solution for replacing an air conditioner or heat pump in homes with limited utility space. Efficiency Learn more 5 Series 500W11 17.5 EER / 3.1 COP The 5 Series 500W11 Hydronic Heat Pumps provide super efficient hot water generation for pool/spa heating, radiant floor, snow melt, aquaculture, and process water installations. Efficiency Learn more 5 Series 504W11 16.1 EER / 3.3 COP The 5 Series 504W11 with OptiHeat Vapor Injection Technology is perfect for high temperature hydronic heating for boiler replacement Efficiency Learn more Envision NDW 22 EER / 3.5 COP Envision NDW dual hydronic units provide high capacity hot water heating perfect for larger luxury homes. Efficiency Learn more 5 Series 500R11 25.3 EER / 4.4 COP 5 Series 500R11 Indoor Splits are designed for indoor use where all-in-one systems would be difficult to install, like attics or crawl spaces. When connected to our 5 Series SAH Air Handler, the unit can efficiently heat and cool. Efficiency Learn more 5 Series 500RO11 25.3 EER / 4.4 COP 5 Series 500RO11 Outdoor Splits are designed for outdoor use where indoor systems would be difficult to install. Efficiency Learn more 5 Series 506A11 27.6 EER / 4.6 COP Outdoor packaged system for indoor comfort. Efficiency Learn more
7 Series 700A11 41 EER / 5.3 COP The best of the best. Variable capacity system delivers comfort and savings you have to experience to believe. Efficiency Learn more
3 Series 300A11 22.3 EER / 4.1 COP 30 years of research, engineering advancements, and manufacturing experience all at a great price point. Efficiency Learn more
Synergy3D 25.7 EER / 4.2 COP With the Synergy3D, you’ll enjoy incredible energy savings on your heating and cooling costs while providing hot water for radiant floor heat. Efficiency Learn more
5 Series SAH 23.5 EER / 4.4 COP Smaller, lighter and more efficient than ever. When paired with one of our split systems, a 5 Series SAH Air Handler provides the perfect solution for replacing an air conditioner or heat pump in homes with limited utility space. Efficiency Learn more
5 Series 500W11 17.5 EER / 3.1 COP The 5 Series 500W11 Hydronic Heat Pumps provide super efficient hot water generation for pool/spa heating, radiant floor, snow melt, aquaculture, and process water installations. Efficiency Learn more
5 Series 504W11 16.1 EER / 3.3 COP The 5 Series 504W11 with OptiHeat Vapor Injection Technology is perfect for high temperature hydronic heating for boiler replacement Efficiency Learn more
Envision NDW 22 EER / 3.5 COP Envision NDW dual hydronic units provide high capacity hot water heating perfect for larger luxury homes. Efficiency Learn more
5 Series 500R11 25.3 EER / 4.4 COP 5 Series 500R11 Indoor Splits are designed for indoor use where all-in-one systems would be difficult to install, like attics or crawl spaces. When connected to our 5 Series SAH Air Handler, the unit can efficiently heat and cool. Efficiency Learn more
5 Series 500RO11 25.3 EER / 4.4 COP 5 Series 500RO11 Outdoor Splits are designed for outdoor use where indoor systems would be difficult to install. Efficiency Learn more