Best Combined Toilet and Sink Units for Small Bathrooms

For compact homes, a combined toilet and sink unit can save space without sacrificing hygiene. This guide highlights five practical options suited to small bathrooms, guest rooms, or basement updates. Each pick targets a specific user profile—from seniors needing comfortable height to renters seeking simple plumbing setups. The table below summarizes who each product best serves, helping you compare at a glance.

Product Best For Why It’s Included
SUPERFLO Elongated Toilet with Sink Small bathrooms needing an elongated bowl 1.28 GPF, includes faucet, 12″ rough-in
Simple Project 3-IN-1 ADATall Toilet with Sink Seniors or mobility-constrained users 17″ height, 12″ rough-in, includes faucet
Simple Project Modern 2 in 1 Toilet with Sink Comfort-oriented setup without excess height Chair-height seating, 12″ rough-in, 1.28 GPF
1500W Macerator Pump System Basement or retrofits with separate sink and toilet Macerator pump enables flexible routing
Simple Project 600w Macerating Toilet System Basement or utility rooms needing integration 3 water inlets, rear outlet, includes sink and shower

SUPERFLO Elongated Toilet with Sink

SUPERFLO Elongated Toilet with Sink

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The SUPERFLO unit combines an elongated toilet with a sink and faucet in a single compact system, ideal for small baths and powder rooms. It uses a 1.28 GPF single flush and includes a 12-inch rough-in. This option suits buyers who want a streamlined footprint without sacrificing a modern look. Best for: small bathrooms where an elongated bowl saves space but comfort remains a priority. Caution: ensure your plumbing can accommodate the integrated sink drain alongside the toilet line.

Simple Project 3-IN-1 ADATall Toilet with Sink

Simple Project 3-IN-1 ADATall Toilet with Sink

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This 3-in-1 setup features ADA tall dimensions and a 12-inch rough-in, plus a faucet-equipped sink. It’s designed for seniors or users who benefit from a higher seating position while still delivering space savings. Best for: households prioritizing accessibility without expanding the bathroom footprint. Limitation: taller height may not suit all users or tight retrofits with low ceilings.

Simple Project Modern 2 in 1 Toilet with Sink

Simple Project Modern 2 in 1 Toilet with Sink

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This 2-in-1 design emphasizes a comfort chair-height seat for easier seating and a compact 12-inch rough-in. The 1.28 GPF flush aids water efficiency, while the modern appearance fits contemporary bathrooms. Best for: users who want a comfortable height and a sleek, minimalist look. Caution: the 12″ rough-in requires precise plumbing alignment during installation.

1500W Macerator Pump System

1500W Macerator Pump System

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This macerator pump system supports flush plumbing for a combined sink and toilet setup when gravity-fed options are limited. It handles up to 2800 GPH and up the 32.8 feet in vertical lift, with multiple inlet connections for versatile routing. Best for: basements or retrofits where standard drainage is impractical. Caution: installation requires electrical and plumbing work; professional guidance is advisable.

Simple Project 600w Macerating Toilet System

Simple Project 600w Macerating Toilet System

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This system provides a compact, powerful setup with a rear outlet toilet bowl and integrated sink/shower options. It includes a 3-water inlets and an AC vent for basement applications, delivering quiet operation and space efficiency. Best for: utility rooms where maximizing space is essential. Limitation: macerator systems may require more maintenance than standard plumbing.

Buying Guide: Key Considerations for Combined Toilet and Sink Units

What should buyers evaluate before choosing a unit? Here are practical questions and criteria to compare:

  • Flush efficiency and water use: Look for units with 1.28 GPF or similar efficiency and verify whether dual-function setups meet local codes.
  • Height and accessibility: ADA-tall options can ease use for seniors or people with mobility issues. Consider chair-height seats and overall comfort.
  • Rough-in distance: Most units use 12 inches; confirm existing rough-in measurements to ensure a proper fit.
  • Drain and vent considerations: Macerator systems enable routing flexibility but may require electrical connections and professional installation.
  • Multi-inlet plumbing: Some systems offer multiple water inlets or rear outlets; ensure compatibility with your bathroom layout.
  • Maintenance and durability: Evaluate material quality, ease of faucet integration, and access to service parts.

Frequently Asked Questions

  1. What is a combined toilet and sink unit?
    It is a compact bathroom fixture that integrates a toilet and a sink in a single footprint to save space.
  2. Who should consider these units?
    Ideal for small apartments, powder rooms, basements, and homes needing easier accessibility.
  3. Do these units require special plumbing?
    Some models use standard plumbing; others may require a macerator or venting adjustments.
  4. Are these units gravity-fed or require power?
    Most rely on standard gravity; macerator-based systems require electrical connections for pumping.
  5. What maintenance should be expected?
    Regular cleaning, faucet care, and periodic inspection of seals and vents help prevent leaks.
  6. Which unit is best for accessibility?
    ADA-tall or chair-height models are typically best for users needing easier seating and standing.

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