David White Services is known for offering the residents of Gallipolis, OH, outstanding furnace installation options. As a family-run company, we’re able to provide highly personalized services to our Gallia County customers. We work with Energy Star-certified products and strive to save our customers as much money as possible. Many people could benefit from a new heating system, so we make it easy to get one installed. Our BBB-accredited business maintains an A+ rating by always performing high-quality work.