Duncan Plumbing & Gas

Our Superior Customer Plan helps you avoid costly and unexpected repairs. For the low cost of $149.95 per year, we'll come out & fully inspect the plumbing in your house and let you know what areas might need attention. We'll check from your crawlspace or basement all the way up to your attic and inspect every toilet, faucet, drain line, water line, water heater, hose bib, and much, much more. Superior Plumbing & Gas, a family-owned-and-operated plumbing and gas company in Columbia, SC, trains capable, friendly plumbers and technicians to meet all your plumbing service and repair needs.

Superior Plumbing & Gas leads Columbia in the tankless water heater market. Rinnai Inc., the foremost innovator in tankless water heaters, awarded its highest achievement award to Superior Plumbing for quality installations and service. Tankless water heaters provide energy efficient, instant hot water for your home or business. Call us today to learn more about the benefits and savings of Rinnai, the water heating system preferred by more consumers, homebuilders, business owners & installers. You don't use hot water 24-hours a day, but you're paying to heat water all day long.