- HEP Plumbing
- Dual-flush Models

Dual-flush Models
Dual-flush Models | Toilet Upgrades and Replacements | Plumbing | Robbins
Imagine pressing a sleek chrome button and knowing you’re saving gallons of water with every flush—without sacrificing performance. HEP’s dual-flush toilets bring that feeling home to Robbins, pairing modern styling with powerful, precision-engineered flushing technology. Our certified plumbers handle every detail, from removing the old unit to hauling it away, so all you have to do is enjoy a quieter, cleaner, eco-friendly bathroom.
Whether you’re planning proactive toilet upgrades and replacements during a remodel or your current fixture just called it quits, we’ll match you with the right dual-flush model, schedule installation around your calendar, and back the job with a workmanship guarantee. Book today and start seeing lower water bills—and a fresher looking bathroom—by this time next week.
FAQs
What exactly is a dual-flush toilet and how does it differ from a standard model?
A dual-flush toilet is designed with two separate flush options: a reduced-volume button (usually 0.8–1.1 gpf) for liquid waste and a full-volume button (1.28–1.6 gpf) for solid waste. The user chooses the amount of water needed, reducing overall consumption without sacrificing performance. Traditional single-flush toilets release the same higher volume of water every time, so the dual-flush mechanism can cut usage by 20–60 percent, depending on household habits.
How much water and money can I expect to save in Robbins by upgrading to a dual-flush model?
Robbins households that switch from 3.5 gpf or older 1.6 gpf toilets to WaterSense-certified dual-flush units typically save 12 000–16 000 gallons of water per toilet each year. With the Town of Robbins’ average combined water and sewer rate of roughly $0.011–$0.013 per gallon (2024), that equals $130–$200 in annual utility savings for a family of four. The payback period for the toilet purchase is often 2–4 years, after which the savings continue for the life of the fixture.
Can I convert my existing toilet to dual-flush, or do I need a completely new unit?
Some aftermarket conversion kits can be installed on select two-piece toilets, but they seldom achieve the same reliability or WaterSense certification as a factory-built dual-flush model. If your current toilet was manufactured before 1994 or uses more than 1.6 gpf, a full replacement is usually recommended for maximum efficiency, performance, and warranty coverage. Our Robbins plumbing team provides free on-site evaluations to determine whether a retrofit or full replacement makes better economic sense.
Are dual-flush toilets approved under Robbins and North Carolina plumbing codes?
Yes. The 2021 North Carolina Plumbing Code, adopted by Moore County and the Town of Robbins, permits low-flow and dual-flush fixtures as long as they meet ANSI/ASME A112.19.2 and EPA WaterSense standards. WaterSense certification is required for most new construction and major renovations to qualify for inspections. A simple like-for-like toilet replacement does not require a building permit, but the work must still comply with code and be performed by a licensed plumber if alterations to the supply line or drain are involved.
What is the typical cost and installation timeline for a dual-flush toilet replacement in Robbins?
Complete replacement—including a WaterSense-certified dual-flush toilet, new wax ring or gasket, supply line, disposal of the old unit, and labor—generally runs $350–$950, depending on brand, bowl type (round, elongated, comfort height), and any subfloor repairs. Standard installations take 2–3 hours. If flange repairs, shut-off valve upgrades, or drain reconfigurations are needed, add 1–2 hours and $75–$150 in parts. Our Robbins office offers free estimates, transparent pricing, and same-day service for in-stock models.
How do I maintain a dual-flush toilet and what common issues should I watch for?
Maintenance is straightforward: • Clean the buttons or actuator plate monthly to prevent mineral buildup that can affect flushing force. • Avoid drop-in tank tablets; they can degrade seals and gaskets. Use mild bowl cleaners instead. • Replace the flush valve seal every 3–5 years (a $5 part) if you notice intermittent tank refills. • Check the fill valve height after installation so water stops 1" below the overflow tube. Typical issues—such as a weak reduced-volume flush, running water, or buttons that stick—are usually resolved by cleaning or replacing inexpensive internal parts. Our Robbins technicians carry common dual-flush service kits on every truck and can complete most repairs in a single visit.