Common Plumbing Repairs in Duncan, SC: What Our Team Sees Every Week

As Waldrop’s home base, Duncan is where many of our plumbers live and work. Our technicians Dillon and Trey know Duncan’s neighborhoods, housing stock, and plumbing quirks as well as anyone. Here’s what they see most often.

The Duncan Plumbing Profile

Duncan sits in the heart of Spartanburg County, with housing that ranges from historic homes near downtown to the newer developments along Highway 290 and Reidville Road. The age and style of your home largely determines what plumbing issues you’ll encounter.

Pressure Reducing Valves (PRVs)

Duncan homes connected to the Startex-Jackson-Wellford-Duncan (SJWD) water system or Spartanburg Water frequently need PRV service. Municipal water pressure in this area can run higher than what residential plumbing is designed for, which is why most homes have a PRV installed at the main supply entry.

Both Dillon and Trey regularly install replacement PRVs in Duncan — it’s one of the most common plumbing repairs in the area. On a recent job, Dillon installed a new 600XL 3/4″ PRV in a crawlspace, rebuilt a section of supply line with PEX to replace old sharkbite fittings, and installed a new shower drain — a comprehensive job that addressed multiple aging components in a single visit. A failing PRV causes low water pressure throughout the house, and a missing PRV allows dangerously high pressure that stresses every fitting, valve, and appliance in your plumbing system.

Shower Cartridge Replacements

Another frequent repair in Duncan homes – particularly those built in the 2000s-2010s with single-handle shower valves. The cartridge inside the valve controls both temperature and flow. After 8-12 years of daily use, cartridges wear out, causing:

  • Difficulty adjusting temperature
  • Dripping from the showerhead when the valve is off
  • Sudden temperature changes during use
  • Reduced water flow

Dillon and Trey carry the most common cartridge brands (Moen, Delta, Kohler) on the truck, so most replacements are completed in a single visit.

Cleanout Cap Replacements

Plumbing cleanout caps – the access points used for drain cleaning – deteriorate over time, especially on exterior cleanouts exposed to weather and lawn equipment damage. A missing or broken cap allows sewer gas to escape and debris to enter the drain line.

This is a simple but important repair that’s often overlooked until a plumber points it out during another service call.

Why Duncan Homeowners Trust Waldrop

We’re not just in Duncan – we’re from Duncan. Our headquarters at 790 Duncan Reidville Road means the shortest response times in the area. For emergencies, we’re often on-site within the hour.

Duncan homeowners also benefit from our familiarity with local water conditions, common pipe materials used by area builders, and the specific plumbing layouts typical in neighborhoods like Holly Tree, River Falls, and Tyger River.

Maintenance Tips for Duncan Homeowners

1. Know your PRV location – usually near the main water shut-off where the supply enters the house. If you notice gradually declining water pressure, the PRV is the first suspect.

2. Test your shut-off valves annually – turn each one off and back on to prevent seizing. This includes under-sink valves, toilet valves, and the main shut-off.

3. Know your water heater’s age – check the serial number for the manufacture date. If it’s over 10 years old, start planning for replacement before it fails.

4. Don’t ignore dripping faucets or running toilets – small leaks waste thousands of gallons and can lead to bigger problems.

YOUTUBE EMBED: Got High Water Pressure? This One Valve Fixes It FAST — @YallCallWally

Call Waldrop Plumbing Air Electric at (864) 536-0887 – or stop by our Duncan office at 790 Duncan Reidville Road.

RELATED POSTS:

  • Runnin’ Out of Hot Water → https://www.callwaldrop.com/blog/runnin-out-of-hot-water-lets-figure-it-out-with-wally-upstate-sc/
  • How Does Hot Water Get Through the Whole House → https://www.callwaldrop.com/blog/how-does-hot-water-get-through-the-whole-house/
  • Why Does My Drain Keep Clogging → https://www.callwaldrop.com/blog/why-does-my-drain-keep-clogging/
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