Yes—1.6 GPF toilets deliver strong performance while conserving water. This guide highlights top options for households seeking efficient flushing, universal height comfort, and reliable components. The list includes two TOTO Drake models for universal and standard heights, a Kohler two-piece with a dual-flush option, a Kohler flush valve kit, and a universal-fit toilet fill valve. Ideal buyers include small bathrooms needing compact, efficient models, ADA-conscious shoppers seeking comfortable heights, and DIYers who want easy-to-install components for long-term reliability.
Summary of selected products
| Product | Best For | Key Benefit |
|---|---|---|
| TOTO Drake CST776CSFG#01 | Universal Height comfort seekers | Powerful Tornado Flush with CEFIONTECT glaze |
| TOTO Drake CST776CSG#01 | Standard height users | One-flush reliability with 1.6 GPF |
| Kohler K-3987-0 Wellworth | Small baths, dual-flush control | Left-hand lever; dual-flush option |
| Kohler 85406 Flush Valve Kit | Valve upgrades and repairs | Genuine KOHLER parts for compatibility |
| Korky QuietFILL 528MP | Easy-to-install fill valve | Universal fit; fast, quiet operation |
TOTO Drake Two-Piece Elongated 1.6 GPF Universal Height Toilet
The TOTO CST776CSFG#01 offers Universal Height for easier sitting and standing and a powerful Tornado Flush that cleans the bowl surface with a circular water swirl. CEFIONTECT glaze minimizes waste buildup, helping with easier maintenance. Best for households needing ADA-friendly comfort and reliable performance in a single-flush system.
Best for: buyers who want ADA-compliant height and a high-performance, easy-to-clean flush. Why selected: combines universal height with efficient 1.6 GPF and TOTO’s signature cleaning technology. Caution: Universal Height may not be preferred if space is extremely tight or if a standard height is required.
TOTO Drake Two-Piece Elongated 1.6 GPF Toilet (Standard Height)
This model provides standard-height comfort with a strong 1.6 GPF flush and a wide 3-inch flush valve for a powerful one-flush performance. Best for: users who prefer a lower seating height. Why selected: reliable performance with a familiar two-piece design and efficient water use. Caution: Standard height might feel less accessible to taller individuals during repeated use.
KOHLER K-3987-0 Wellworth Two-Piece Toilet
Wellworth is a two-piece design with a Round-front bowl ideal for smaller baths. It offers a left-hand trip lever and a choice of 1.1 or 1.6 GPF. Best for: compact bathrooms that still require efficient flushing options. Why selected: proven Kohler design with dual-flush versatility in a space-saving form. Caution: Dual-flush availability may vary by model year or region.
Kohler 85406 Toilet Flush Valve Kit
Genuine KOHLER flush valve kit designed for multiple Wellworth and Highline models. Includes flush valve, 2″ flapper, gasket, and bolts. Best for: DIY repairs or upgrades to restore optimal flush performance. Why selected: ensures compatibility with KOHLER 2-piece toilets and supports leak-free operation. Caution: Parts compatibility should be verified for older or non-KOHLER models.
Korky QuietFILL Platinum Toilet Fill Valve
The QuietFILL Platinum fill valve replaces worn ballcocks and fits a wide range of 2-piece and 1-piece toilets. It features easy twist-lock installation and adjustable height from 7.75″ to 13.5″. Best for: DIY repairs or replacements to reduce fill noise and improve refill speed. Why selected: broad compatibility and quick install. Caution: Some models may require minor modification during installation in non-standard toilets.
Buying Guide
What to consider when choosing a 1.6 GPF toilet or upgrade:
- Height and accessibility: Universal Height offers easier sitting and standing for many users; standard height may suit spaces with lower ceilings or user preference.
- Flush system type: Tornado or dual-flush systems can improve efficiency and cleanliness. Consider noise level, ease of maintenance, and bowl wash pattern.
- Toilet shape and fit: Elongated bowls tend to be more comfortable but require more space; round bowls save space in tight bathrooms.
- Maintenance and glaze: Glazes like CEFIONTECT reduce waste sticking and simplify cleaning, but verify compatibility with the bowl material.
- Parts availability: Having access to genuine replacement valves and kits (Kohler, Kohler-compatible, or universal valves) reduces long-term maintenance effort.
FAQ
- What does 1.6 GPF mean for water savings? It means the toilet uses up to 1.6 gallons per flush, reducing water use compared with older 3.5–5.0 GPF models.
- Is universal height always ADA-compliant? Universal height models are designed to meet ADA height requirements, but always verify specific model compliance.
- Can I replace a toilet valve kit myself? Yes, with basic plumbing skills and the correct kit for your model, installation is straightforward.
- Which is better for small bathrooms: round or elongated bowls? Round bowls save space; elongated bowls are more comfortable for most users. Choose based on space and user comfort.
- Do 1.6 GPF toilets flush well on their own? Modern 1.6 GPF designs with wide flush valves and efficient bowls are designed to deliver strong performance in a single flush.