An integrated toilet and sink combo is a space-saving solution for compact bathrooms. This guide highlights five practical options, explaining who each product is best for and why it stands out. If you’re renovating a small bathroom, you’ll want a unit that combines hygiene, water savings, and easy installation. The top picks below are suitable for tiny homes, rental apartments, guest baths, and basements where floor space is at a premium.
Summary Table Of Chosen Products
| Product | Best For | Key Benefit | Note |
|---|---|---|---|
| SUPERFLO Elongated Toilet with Sink | Small bathrooms needing height and space efficiency | Built-in sink and faucet with water-saving dual-use flush | Elongated, 17.2” height |
| Simple Project Modern Elongated Toilet with Sink | Budget-friendly space-saving upgrades | 3-in-1 design with included faucet, 1.28 GPF | 17″ tall, compact footprint |
| Sinkology SinkPositive GreenFlow Toilet Tank Sink | Easy retrofit in small spaces | Tank-cover sink for effortless replacement | Requires no plumbing changes |
| Simple Project Tall Toilet with Sink | Comfort-focused, space-stretched layouts | 17″ seat height, soft-closing seat | 2-in-1 with faucet |
| SinkTwice Adaptable Toilet Tank Sink | Versatile compatibility and water reuse | Upgrade option for various tanks | Made in the USA |
SUPERFLO Elongated Toilet With Sink
The SUPERFLO unit is designed for small bathrooms that need maximum floor space. It features a built-in sink on top of the tank and an included faucet, enabling convenient handwashing without stepping away from the toilet. The water-saving single flush uses the sink’s graywater to augment the flush, helping reduce overall water use. The elongated bowl stands at 17.2 inches, offering a more comfortable seating experience, and the soft-closing seat minimizes noise.
Best for: Users who want a compact, two-in-one fixture with a taller, comfort-focused design. This model is ideal for those prioritizing space efficiency and a streamlined aesthetic in guest baths or half baths. A potential limitation is the reliance on the water-saving approach, which requires careful use to maximize efficiency.
Simple Project Modern Elongated Toilet With Sink
The Simple Project unit combines a toilet and sink in a 3-in-1 design with a top-of-tank faucet. This model emphasizes practical space savings for tight spaces, apartments, and small guest baths. It uses a 1.28 GPF single flush, helping conserve water while providing a functional place for quick handwashing. The compact footprint makes it a strong choice when you must balance storage, movement, and usability in narrow bathrooms.
Best for: Renters or homeowners who want an economical, all-in-one solution without sacrificing function. Choose this if you prioritize a compact footprint and simple installation. Limitation: 3-in-1 fixtures can be less customizable than separate components in longer-term renovations.
Sinkology SinkPositive GreenFlow Toilet Tank Sink
The Sinkology option focuses on space-saving with an integrated tank sink design. It is positioned as an easy retrofit for small bathrooms and eco-conscious projects. The faucet consistently provides fresh water to wash up, integrating a handwashing station directly into the toilet system. No plumbing changes are required for installation, which simplifies upgrading in existing layouts.
Best for: Homeowners seeking a retrofit-friendly upgrade that minimizes disruption to existing plumbing. Limitation: It may be best suited for standard-to-small tanks, so confirm compatibility with your existing toilet model.
Simple Project Tall Toilet With Sink
This taller model adds comfort height to a compact two-in-one system. The soft-closing seat reduces noise, and the 17-inch seat height accommodates a broader range of users. The 12″ rough-in and integrated faucet provide a simple, space-saving solution for small bathrooms that still demand a comfortable user experience. Best for: Families or individuals who want comfort without compromising on footprint. Limitation: Slightly taller fixtures may require careful clearance planning in very tight spaces.
SinkTwice Adaptable Toilet Tank Sink
The SinkTwice adaptable system focuses on compatibility with a broad range of toilet models. It uses a built-in spout to direct refill water from the toilet tank to the sink, enabling handwashing while conserving water by reusing the flush water. This option is particularly useful for renovations where existing toilet styles must be preserved. Best for: Those upgrading an existing setup without replacing the entire toilet. Caution: Always verify compatibility with your current tank dimensions before purchasing.
SUPERFLO Macerating Toilet System
While not an integrated sink unit, the macerating system is included for consideration in basement or below-grade bathrooms where traditional sewer lines are challenging. It uses a powerful 600W macerator pump and supports multiple inlets for a sink, shower, or laundry drain. This model is best when expansions into under-floor drain setups are needed. Limitation: It is a specialized system that requires proper installation planning and may be overkill for purely small-bathroom setups.
Buying Guide
What should you consider when choosing an integrated toilet and sink?
- Space and layout: Measure the available floor area and check the rough-in compatibility (most options specify 12″ or 12 inch rough-in). The height of the seat and overall unit affects accessibility and comfort.
- Water efficiency: Look for units with low-flow flush options (1.28 GPF or similar). This affects utility costs and environmental impact.
- Maintenance and cleaning: Some models feature soft-closing seats and smooth surfaces that are easier to clean. Consider models with fewer crevices where dirt can accumulate.
- Installation: Retrofit-ready options with minimal plumbing changes appeal to renovations. Some products are designed to replace tank covers with built-in sinks, which can simplify upgrades.
- Compatibility: If upgrading an existing toilet, verify that the chosen sink-tloat model aligns with your tank size and outlet type. The SinkTwice and similar products emphasize broad compatibility.
- Aesthetic and material quality: A cohesive look matters in compact spaces. Choose finishes that complement your bathroom decor and ensure durable materials for long-term use.
Frequently Asked Questions
- What is an integrated toilet and sink?
It combines a toilet and a sink into a single footprint or a compact top-tank system to save space and encourage water reuse. - Are these units easy to install in small bathrooms?
Many are designed for easy, space-saving installation, often requiring minimal plumbing changes. - Do integrated systems use less water?
Yes, most use water-saving flushes and leverage sink runoff to augment the toilet flush where applicable. - Which is best for basements or below-grade spaces?
Systems with macerator pumps or adaptable tank sinks can handle non-standard drainage and space constraints. - Can I retrofit an existing toilet with a sink?
Some models are designed as retrofit-friendly tank covers, allowing upgrades without full teardown. - What should I avoid when choosing an integrated unit?
Avoid overly tall or bulky designs if you have very tight clearance. Also verify compatibility with your current plumbing before purchasing.