Does your toilet use too much water with every flush? Imagine seeing your water bill shrink just by making a simple change at home! Older toilets can waste gallons of water daily. This adds up fast, hurting your wallet and the planet. You know you want to save water, but picking the right dual flush toilet conversion kit feels confusing. Which one fits your toilet? Will the installation be a nightmare? These common worries stop many people from upgrading.
This guide cuts through the confusion. We will break down exactly what you need to look for in a conversion kit. You will learn which features matter most for easy installation and maximum water savings. Stop guessing and start saving! Keep reading to find the perfect kit to transform your standard toilet into a water-saving champion.
Top Dual Flush Toilet Conversion Kit Recommendations
No. 1
Danco HYR451T HyrdroRight Universal Water-Saving Toilet Repair Kit with Dual Flush Valve, Lever Handle, White, HYR451T
- NO TOOLS REQUIRED: Easy and simple DROP-IN installation that does NOT require any tools or toilet tank removal.
- WATER SAVING: Saves water and eliminates common leaky toilet problems due to worn out flapper, toilet handle, or faulty flapper chain.
- INNOVATIVE DESIGN: This toilet repair kit signals when a leak is found and the fast-fill valve provides efficient operation; this kit replaces flapper, chain and handle with LightTouch lever that has a unique split handle design for operation efficiency; Permafit silicone seal is chemical and warp-resistant.
- UNIVERSAL FIT: Converts most 2-piece toilets 1.6 GPF and higher to water-saving dual-flush design and detects leaks. Works with standard 2 inch flush valve toilets: NOT compatible with 1.28 GPF toilets, toilets with 3” flush valves, or Mansfield Brand toilets.
- INCLUDED: Combines two products that will increase your toilet’s efficiency: HYR271T Dual Flush Valve and HC630T HydroClean Fill Valve
No. 2
Danco HyrdroRight Water-Saving Toilet Tank Repair Kit with Dual Flush Valve, Includes Dual Push Button Handle in Chrome, (HYR460)
- WATER-SAVING DUAL FLUSH TOILET REPAIR KIT: Converts a standard toilet into a dual flush toilet that saves water by reducing the amount of water used with each flush. The HYR451T combines two products that together will increase your toilet’s efficiency: HYR271 Dual Flush Converter and HC630 HydroClean fill valve
- COMPATIBILITY: The Dual Flush Converter works with standard 2 in. flush valves and requires a 10-inch minimum clearance from highest point of the flush valve opening to the inside of the tank lid. NOT COMPATIBLE with 1.28 GPF toilets, toilets with 3″ flush valves, or Mansfield Brand toilets
- FLUSH VALVE REPLACEMENT INSTALLATION TIP: Be sure to place the Dual Flush Converter directly in the center of your existing flush valve
- IMPORTANT INSTALLATION TIP: Do not remove overflow tube and flush valve from toilet tank; the Dual Flush Converter is a replacement to the existing flapper; slide the blue silicone dome gasket down the overflow tube, seating the gasket into the flush valve
- ELIMINATES TOILET LEAKS: Eliminates common leaky toilet problems due to a worn-out flapper, handle or faulty flapper chain; the permafit silicone seal is also chlorine and chemical resistant and will not warp
No. 3
Fluidmaster 550DFRK-3 DuoFlush Complete Fill and Dual Flush Conversion System, 2
- Convert your existing 2” flush valve toilet to Dual Flush technology
- Save water & money, uses up to 45% less water
- Retrofits to any 2” flush valve toilet, 1.6 GPF and pre 1994 3.5+ gallon per flush models
- Easy-to-install and fully adjustable for a wide range of settings, without removing the valve
- Complete fill & dual flush conversion system
No. 4
3-Inch Dual Flush Valve Replacement Kit for 2-Piece Toilets, Universal Toilet Repair Kit with Push Button, Fill Valve, Gasket & Bolts,Compatible with Glacier Bay, Kohler, American Standard, and Toto
- 【Wide Compatibility】Designed for most 3-inch two-piece toilets (not for one-piece toilets). Fits flush valve openings 3.2"–3.6" and the tank button hole diameter 1.9"–2.2".Please check our size-measurement guide in the images before ordering.Compatible with Glacier Bay, compatible with Toto, WaterRidge, Kohler, American Standard, Aquasource, and more
- 【Dual Flush Valve – Eco & Powerful】Upgrade your toilet with this toilet flusher replacement kit featuring full and half-flush options. Enjoy powerful waste removal with the full flush mode and reduce water use (and bills!) with the half flush mode — perfect for everyday light flushing. Easily adjustable water levels let you customize performance and maximize efficiency for both solids and liquids
- 【Restore & Boost Toilet Power — Say Goodbye to Leaks & Wobbling】Upgrade your toilet’s performance with this toilet repair kit inside tank, designed to stop leaks, improve flushing power, and eliminate wobbling. Including a toilet flush valve, push button, toilet fill valve, durable mounting bolts, and a secure tank-to-bowl gasket, it quickly fixes common issues like worn flappers, weak flushes, and unstable tanks. This dual-flush toilet kit restores factory-level performance — making your toilet flush like new again without replacing the entire system
- 【Easy, Flexible Installation】This toilet tank replacement kit is designed for fast, easy to install and maximum flexibility. The toilet dual flush valve, fill valve height (adjustable from 8"–13"), push-button rod length, and overflow pipe height can all be customized to match your tank setup, ensuring a precise fit and smooth flushing`.Moreover, this toilet fill valve can also remain silent during the filling process, making your life more comfortable and quiet
- 【Durable Premium Materials】This toilet repair kit is built with high-quality ABS components for superior durability and stable performance under varying water pressure. The reinforced flush valve and push button resist corrosion and wear, while the extra-thick rubber seal creates a tight, secure fit to prevent leaks and extend the life of your toilet system
No. 5
2-Inch Dual Flush Valve Replacement Kit for 2-Piece Toilets, Universal Toilet Repair Kit with Push Button, Fill Valve, Gasket & Bolts,Compatible with Glacier Bay, Kohler, American Standard, and Toto
- 【Wide Compatibility】Designed for most 2-inch two-piece toilets (not for one-piece toilets). Fits flush valve openings 2.4"–2.8" and the tank button hole diameter 1.9"–2.2".Please check our size-measurement guide in the images before ordering.Compatible with Glacier Bay, compatible with Toto, WaterRidge, Kohler, American Standard, Aquasource, and more
- 【Dual Flush Valve – Eco & Powerful】Upgrade your toilet with this toilet flusher replacement kit featuring full and half-flush options. Enjoy powerful waste removal with the full flush mode and reduce water use (and bills!) with the half flush mode — perfect for everyday light flushing. Easily adjustable water levels let you customize performance and maximize efficiency for both solids and liquids
- 【Restore & Boost Toilet Power — Say Goodbye to Leaks & Wobbling】Upgrade your toilet’s performance with this toilet repair kit inside tank, designed to stop leaks, improve flushing power, and eliminate wobbling. Including a toilet flush valve, push button, toilet fill valve, durable mounting bolts, and a secure tank-to-bowl gasket, it quickly fixes common issues like worn flappers, weak flushes, and unstable tanks. This dual-flush toilet kit restores factory-level performance — making your toilet flush like new again without replacing the entire system
- 【Easy, Flexible Installation】This toilet tank replacement kit is designed for fast, easy to install and maximum flexibility. The toilet dual flush valve, fill valve height (adjustable from 8"–13"), push-button rod length, and overflow pipe height can all be customized to match your tank setup, ensuring a precise fit and smooth flushing`.Moreover, this toilet fill valve can also remain silent during the filling process, making your life more comfortable and quiet
- 【Durable Premium Materials】This toilet repair kit is built with high-quality ABS components for superior durability and stable performance under varying water pressure. The reinforced flush valve and push button resist corrosion and wear, while the extra-thick rubber seal creates a tight, secure fit to prevent leaks and extend the life of your toilet system
No. 6
FLUSH-N-SAV 2 - Inch Dual Flush Valve Complete Conversion Kit with Handle, Adjustable Fill Valve, Adjustable Overflow Tube, Overflow Water Conserver, Stainless Steel Bolts & Donut Gasket.
- 𝐃𝐞𝐬𝐢𝐠𝐧𝐞𝐝 𝐟𝐨𝐫 𝟐-𝐈𝐧𝐜𝐡 𝐓𝐨𝐢𝐥𝐞𝐭𝐬 𝐎𝐧𝐥𝐲 : This dual flush conversion kit is engineered for toilets with a 2-inch flush valve opening. To avoid size confusion, measure your toilet’s discharge hole (2½" or smaller = 2 inches) or measure the diameter of the flapper (2½" or smaller = 2 inches). Ideal for most traditional residential toilets, ensuring a precise and compatible fit every time. Works with most standard round and elongated toilet tanks, giving universal compatibility across common household models.
- 𝐂𝐨𝐦𝐩𝐥𝐞𝐭𝐞 𝐓𝐨𝐢𝐥𝐞𝐭 𝐂𝐨𝐧𝐯𝐞𝐫𝐬𝐢𝐨𝐧 𝐊𝐢𝐭 : Not just a valve replacement, this kit provides everything you need for a complete upgrade: a dual flush valve, a chrome handle assembly, adjustable fill valve, adjustable overflow tube, overflow water conserver, stainless steel bolts, and a donut gasket. Perfect for those starting from scratch and modernizing older toilets. A true all-in-one toilet upgrade kit, it eliminates the need for multiple purchases or guesswork.
- 𝐄𝐂𝐎-𝐅𝐑𝐈𝐄𝐍𝐃𝐋𝐘 𝐃𝐔𝐀𝐋 𝐅𝐋𝐔𝐒𝐇 𝐒𝐘𝐒𝐓𝐄𝐌: Save water and reduce utility bills with a two-option flush system. Use the lighter flush for liquids and the full flush for solids, conserving up to 50% water while maintaining strong flushing performance. An ideal toilet upgrade for water-conscious households. This water-saving toilet kit is helping support environmental conservation standards.
- 𝐎𝐕𝐄𝐑𝐅𝐋𝐎𝐖 𝐖𝐀𝐓𝐄𝐑 𝐂𝐎𝐍𝐒𝐄𝐑𝐕𝐄𝐑 𝐈𝐍𝐂𝐋𝐔𝐃𝐄𝐃: The included overflow water conserver device installs directly on the overflow pipe, reclaiming water that would normally go to waste. This small but powerful addition enhances efficiency, making your bathroom more sustainable with every flush. Designed for continuous water efficiency, it prevents the toilet’s bowl from overfilling and unnecessary waste.
- 𝐇𝐄𝐀𝐕𝐘-𝐃𝐔𝐓𝐘, 𝐀𝐃𝐉𝐔𝐒𝐓𝐀𝐁𝐋𝐄 & 𝐄𝐀𝐒𝐘 𝐈𝐍𝐒𝐓𝐀𝐋𝐋: Includes corrosion-resistant stainless steel bolts, a secure rubber gasket, and an adjustable fill valve for fine-tuning flush strength. Assembly is straightforward; simply remove the old parts, separate the toilet tank and bowl, install the new Flush-N-Sav components, and reconnect the toilet tank and bowl. It comes with clear step-by-step instructions, ensuring a hassle-free DIY installation with basic tools.
No. 7
Fluidmaster 400AKRP10 Universal, All In One, Complete Toilet Tank Repair Kit For 2-Inch Flush Valve Toilets
- RESTORES OVERALL TOILET PERFORMANCE: All in one toilet repair kit replaces inefficient fill and flush valves, leaky flappers, and broken toilet handles to make your toilet run like new.
- UNIVERSAL DESIGN: 400A toilet fill valve adjusts easily from 9 – 14 inches, fits most 2-inch flush valve toilets, and is ideal for use in 1.6 to 3.5 gallons per flush toilets or larger
- HIGH PERFORMANCE FLAPPER: PerforMAX high performance 2-inch adjustable water-saving toilet flapper maximizes water usage with each flush
- EASY INSTALLATION: Easily installs in 10 minutes or less to get your toilet flushing like new again
No. 8
FLUSH-N-SAV 3 - Inch Dual Flush Valve Complete Conversion Kit with Handle, Adjustable Fill Valve, Adjustable Overflow Tube & Overflow Water Conserver - Two Flush Options & Full Toilet Upgrade
- 𝐃𝐔𝐀𝐋-𝐅𝐋𝐔𝐒𝐇 𝐖𝐀𝐓𝐄𝐑 𝐄𝐅𝐅𝐈𝐂𝐈𝐄𝐍𝐂𝐘 & 𝐄𝐂𝐎-𝐅𝐑𝐈𝐄𝐍𝐃𝐋𝐘 𝐃𝐄𝐒𝐈𝐆𝐍: Upgrade your 3-inch toilet with the dual-flush valve system, offering two flushing options for liquids and solids. Save up to 50% water while maintaining strong flushing performance. Ideal for eco-conscious homes, apartments, and commercial bathrooms.
- 𝐂𝐎𝐌𝐏𝐋𝐄𝐓𝐄 𝐂𝐎𝐍𝐕𝐄𝐑𝐒𝐈𝐎𝐍 𝐊𝐈𝐓 – 𝐀𝐋𝐋-𝐈𝐍-𝐎𝐍𝐄 𝐔𝐏𝐆𝐑𝐀𝐃𝐄: This kit includes the 3-inch dual flush valve, chrome handle assembly, adjustable fill valve, adjustable overflow tube, overflow water conserver, refill hose, stainless steel bolts & nuts, and heavy-duty donut gasket, and an illustrated installation guide. Fully replaces old flapper-and-chain mechanisms for a reliable, long-lasting toilet upgrade.
- 𝐃𝐞𝐬𝐢𝐠𝐧𝐞𝐝 𝐟𝐨𝐫 𝟑-𝐈𝐧𝐜𝐡 𝐓𝐨𝐢𝐥𝐞𝐭𝐬 𝐎𝐧𝐥𝐲 – This dual flush complete conversion kit is engineered for toilets with a 3 - inch flush valve opening. To avoid size confusion, measure your toilet’s discharge hole (greater than 2 ½ inches = 3 inches) or measure the diameter of the flapper (greater than 2 ½ inches = 3 inches). Ideal for most traditional residential toilets, ensuring a precise and compatible fit every time. Works with most standard round and elongated toilet tanks, giving universal compatibility across common household models.
- 𝐄𝐧𝐡𝐚𝐧𝐜𝐞𝐝 𝐅𝐥𝐮𝐬𝐡𝐢𝐧𝐠 𝐏𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 & 𝐑𝐞𝐝𝐮𝐜𝐞𝐝 𝐂𝐥𝐨𝐠𝐬: Optimised internal components increase water flow from tank to bowl, improving flush power and minimising clog risks. Adjustable fill valve height and float settings allow precise control of water volume for consistent, smooth flushing every time.
- 𝐃𝐈𝐘 & 𝐏𝐑𝐎𝐅𝐄𝐒𝐒𝐈𝐎𝐍𝐀𝐋 – Full Conversion: Install your complete 3-inch toilet conversion kit using the included step-by-step instructions and all hardware. Supports a hassle-free DIY upgrade or professional installation, modernizing your toilet system efficiently and reliably.
The Smart Switch: Your Dual Flush Toilet Conversion Kit Buying Guide
Are you tired of watching the water meter spin? Upgrading your toilet to a water-saving dual-flush system used to mean buying a whole new unit. Now, you can easily convert your existing toilet! A dual-flush conversion kit lets you choose between a full flush for solids and a half flush for liquids. This guide helps you pick the best kit for your bathroom.
Key Features to Look For
When shopping for a conversion kit, look for these important features that make a difference in performance and ease of use.
- Dual-Actuation Options: How do you switch between flushes? Some kits use a standard handle replacement. Others use a top-mounted button system. Buttons are often easier to install and look modern.
- Adjustable Water Volume: The best kits let you fine-tune how much water the half flush uses. Being able to adjust this means you save more water over time.
- Universal Fit: Check if the kit fits your current toilet tank. Most standard toilets use a 2-inch or 3-inch flapper opening. A good kit will include adapters for different sizes.
- Easy Installation: Look for kits that claim a “tool-free” or “5-minute” installation. Complex kits mean more frustration.
Important Materials Matter
The material of the internal components directly affects how long your kit lasts. Cheap plastic parts break quickly.
- Silicone Seals: Look for high-quality silicone gaskets and seals instead of rubber. Silicone resists wear and tear from harsh chemicals in the water and creates a much better, long-lasting seal.
- Durable Plastic: The main body and levers should be made from strong ABS plastic. This material resists cracking when exposed to moisture inside the tank.
- Corrosion Resistance: Metal parts, like mounting bolts, should be stainless steel. This prevents rust, which can stain your tank water.
Factors That Improve or Reduce Quality
Quality isn’t just about the parts; it’s about the design.
What Boosts Quality?
- Reliable Flushing Power: A high-quality kit uses a large or cable-operated flush valve. This design provides a stronger siphon action, meaning you rarely need a second flush.
- Quiet Operation: Better engineering means the flush mechanism closes gently, reducing the loud “clunk” you sometimes hear.
What Lowers Quality?
- Flimsy Linkages: If the parts connecting the handle to the flapper feel weak, they will quickly stretch or snap.
- Poor Instructions: If the manual is hard to follow, installation becomes difficult, leading to leaks or improper function.
User Experience and Use Cases
A good dual-flush kit offers immediate benefits.
The Experience
Once installed, the user experience is simple: press the small button for pee, press the large button for poo. Users report significant savings on their monthly water bills almost immediately. Installation difficulty is often the biggest hurdle. If you can change a showerhead, you can likely install a simple conversion kit.
Use Cases
- High-Usage Bathrooms: If you have a main bathroom used by many family members, the water savings add up fast.
- Rental Properties: Landlords install these to lower utility costs without replacing expensive fixtures.
- Water Conservation Goals: Anyone serious about reducing their environmental footprint benefits greatly.
10 Frequently Asked Questions (FAQ) About Dual Flush Conversion Kits
Q: Will this kit fit my old toilet?
A: Most kits are designed to fit standard two-piece toilets made in the last 30 years. Always measure your existing flush valve opening (usually 2 or 3 inches) before buying.
Q: Do I need to turn off the water supply to install it?
A: Yes. You must always shut off the water valve behind the toilet and empty the tank before you start working on the internal parts.
Q: Does this kit save a lot of water?
A: Yes, it does! Standard toilets use about 1.6 gallons per flush (GPF). A dual flush uses about 0.8 GPF for liquids and 1.6 GPF for solids, cutting overall water use significantly.
Q: Is the installation difficult for a beginner?
A: For simpler button kits, no. Many people install them in under 30 minutes with just a screwdriver. More complicated systems might take an hour.
Q: What if my toilet still leaks after I install the kit?
A: A leak usually means the new silicone seal is not seated correctly or the adjustment chains are too tight. Double-check the alignment of the flush seal.
Q: Can I use this kit on a one-piece toilet?
A: Sometimes. One-piece toilets often have smaller, proprietary tank designs. You must confirm the kit manufacturer states it works with your specific one-piece model.
Q: How long do these conversion kits usually last?
A: High-quality kits made with silicone and ABS plastic often last 5 to 10 years before the seals might need minor adjustment or replacement.
Q: Will this change how my toilet looks from the outside?
A: If you install a top-mounted button kit, yes, it will look different and often cleaner than the old handle. Handle replacement kits look almost identical to the original.
Q: Are these kits better than just replacing the flapper?
A: Yes. A standard flapper only controls the total water volume. A conversion kit actively splits the flush into two distinct water amounts, offering much greater water savings.
Q: What if I lose the instructions?
A: Almost every major brand posts PDF installation guides online. Search the brand and model number on their website for easy access.