Best Combined Toilet and Sink Units for Small Bathrooms and Basements
Maximize bathroom space with integrated toilet and sink solutions that save floor area without sacrificing comfort. This guide reviews five top-rated combined units and macerating systems that pair a toilet with a sink or provide built-in upflush capabilities for tight spaces like apartments, basements, and tiny homes. Each option focuses on water efficiency, compact design, and practical installation concerns to help you choose the right fit for your home.
| Product | Brand | Key Benefit |
|---|---|---|
| Simple Project Modern Elongated Toilet with Sink | Simple Project | 3-in-1 design with faucet on the tank top; space saving |
| SUPERFLO Elongated Toilet with Sink | SUPERFLO | Elongated comfort with integrated sink and faucet |
| Simple Project 600w Macerating ToiletSystem | Simple Project | Upflush system with sink and shower support |
| SUPERFLO 600W Macerating Toilet System | SUPERFLO | Upflush for basements; includes sink connections |
| WinZo 600W Macerating Toilet with Upflush | WinZo | Three connections for sink, tub, and more; compact design |
Each product below includes a concise overview, notable features, and installation considerations to help you compare options side by side. For readers in the U.S., these units are practical choices for small bathrooms, laundry rooms, or basement remodels where traditional plumbing isn’t feasible.
Simple Project Modern Elongated Toilet With Sink
The Simple Project 3-in-1 toilet-sink combo maximizes compact bathrooms by placing a built-in sink atop the tank and including a faucet. The 1.28 GPF single flush promotes water efficiency by reusing greywater for handwashing as part of the flush cycle, enabling a dual-use flow that reduces overall water consumption. With a 12-inch rough-in and a 17-inch tall seat height, this unit aims to balance accessibility with space-saving design. The integrated faucet and sink reduce clutter while providing essential handwashing capability directly above the toilet.
Potential considerations include maintenance access to the faucet and sink components, as well as ensuring proper seal integrity between the tank and sink area. Installation may require careful plumbing alignment to maintain water reuse functionality and avoid leaks. Overall, it suits small apartments or guest baths seeking a streamlined, single-unit solution.
SUPERFLO Elongated Toilet With Sink
This SUPERFLO model pairs an elongated toilet with a built-in sink and faucet on top of the tank, designed to save floor space while offering convenient handwashing. The integrated sink leverages stored water from the flush cycle, enabling a water-conscious approach. The unit features a 17.2-inch height for improved comfort when sitting or standing and a soft-closing seat to reduce noise. The design makes it suitable for small bathrooms, guest suites, and apartments where every inch matters.
Important factors include the reliability of the soft-close mechanism and the long-term durability of the tank-sink connection. Proper venting and drainage must be ensured to prevent odors and ensure smooth operation. This option is well-suited for homeowners seeking a stylish, space-efficient solution without sacrificing user comfort.
Simple Project 600W Macerating Toilet System
This one-piece macerating toilet system combines a powerful 600W macerator pump with a rear outlet toilet bowl and a dedicated sink and shower connection. It is designed for basement installations and other spaces where traditional gravity-fed plumbing is impractical. The system supports three water inlets, allowing flexible sourcing from multiple fixtures, and operates quietly to minimize disruption. It’s a strong choice for renovations where a full plumbing retrofit is not feasible.
Considerations include the pump’s maintenance requirements, the height and routing of discharge lines, and ensuring an adequate venting plan. The unit is best suited for basements, garages, or remote bathrooms where plumbing access is limited but a full upflush configuration is desired.
SUPERFLO 600W Macerating Toilet System
This macerating system from SUPERFLO features a one-piece macerator toilet bowl with a soft-close seat and three inlet connections for toilet, sink, and shower. The unit’s 26-foot vertical and 262-foot horizontal pump reach enables flexible basement or below-grade installations without major plumbing work. The compact design helps preserve usable space while providing robust wastewater management for multi-fixture setups.
Key considerations include ensuring proper venting and odor control, plus verifying that the inlets align with your fixture locations. Its versatility makes it feasible for renovations that convert unused spaces into functional bathrooms in basements or workshops.
WinZo 600W Macerating Toilet With Upflush
The WinZo model provides a compact upflush system suitable for small basements or spaces below main plumbing lines. It includes a dual- or triple-connection design for sinks, bathtubs, and other fixtures, enabling flexible layouts. The dual-flush option (1.1/1.6 GPF, averaging 1.28 GPF) supports water conservation while delivering effective waste removal. This unit’s rear-discharge two-piece configuration facilitates installation in tight spaces without major remodeling.
Considerations include assessing the total number of fixtures to be served and ensuring appropriate venting. The WinZo system offers a practical path to add a bathroom where conventional drainage is impractical, especially in basements or dormer spaces.
Buying Guide
When choosing a best combined toilet and sink setup, consider these key factors:
- Space and layout: Decide between a true integrated toilet-sink unit or a macerating upflush system that can support multiple fixtures. For ultra-tight spaces, a single-unit design minimizes footprint, while upflush systems provide flexibility for basements or below-grade installations.
- Water efficiency: Look for toilets with low GPF (gallons per flush) and consider dual-flush options where available. Some units reuse water from the sink for the toilet flush, further reducing consumption.
- Fixture connections: If choosing a macerating system, confirm the number and type of inlets (sinks, showers, bathtubs, laundry) and ensure compatible pipe sizes to avoid bottlenecks or leaks.
- Noise and vibration: Soft-close seats and whisper-quiet macerator pumps improve user experience in shared or small spaces.
- Installation complexity: True integrated units are typically simpler to install in small bathrooms, but may limit configurations. Upflush systems offer placement flexibility but may require skilled plumbing to ensure proper venting and drainage.
- Odor control and venting: Ensure proper venting and consider additional deodorizing options if odors are a concern in basements or confined spaces.
- Maintenance: Macerating pumps require periodic maintenance and cleaning. Check warranty terms and accessibility for servicing components like the pump and seals.
Summary guidance: If your priority is a compact, all-in-one aesthetic with built-in sink practicality, choose true integrated units like the first two products. If you need to retrofit a basement or add a bathroom where gravity-fed plumbing is impractical, upflush macerating systems provide scalable options with multiple fixture connections. Evaluate local codes and consult a professional installer if you’re unsure about venting, discharge paths, or electrical requirements for macerating pumps.