Toilet Buying Guide: Close Coupled, Back to Wall & Wall Hung

A toilet needs to fit the room, connect correctly to the soil pipe and provide a comfortable seating position, but modern ranges now offer far more choice than a standard pan and cistern. Close-coupled, back-to-wall, wall-hung, rimless and comfort-height toilets all suit different layouts and budgets.

This UK toilet buying guide explains the main toilet types, the measurements that matter, soil-pipe connections, concealed cisterns, toilet seats and the practical differences between common designs. Browse our full toilets range while you compare the options.

What type of toilet should you choose?

The three most common modern formats are close-coupled, back-to-wall and wall-hung toilets. Traditional high-level and low-level designs are also available in some bathroom ranges, while rimless and comfort-height features can be found across several pan styles.

The best choice depends on the existing plumbing, available floor space, desired appearance and whether you are carrying out a straightforward replacement or a full bathroom renovation.

Close-coupled toilets

A close-coupled toilet has the cistern positioned directly on the back of the pan. It is one of the most familiar toilet designs in UK homes and is usually straightforward to understand, install and service because the cistern remains accessible.

Close-coupled toilets are available in traditional and contemporary styles. The Hudson Reed Richmond close-coupled toilet provides a traditional appearance, while more compact modern pans suit minimalist bathrooms.

Back-to-wall toilets

A back-to-wall toilet uses a floor-standing pan positioned closely against the wall or a WC furniture unit. The cistern is concealed behind the wall or inside furniture, leaving a cleaner visible finish.

Back-to-wall pans are popular in contemporary bathrooms because they hide pipework and make the area around the toilet easier to clean. The hidden cistern needs suitable access for maintenance, so plan a removable panel or compatible furniture arrangement.

Wall-hung toilets

Wall-hung toilets are fixed to a support frame so the pan is suspended above the finished floor. The cistern and structural frame are concealed in the wall or a boxed-out section.

The clear floor underneath creates a modern appearance and can make cleaning easier. Installation is more involved than a standard close-coupled toilet because the support frame must be securely fixed and the cistern must remain serviceable through the flush plate or another access point.

Close-coupled vs back-to-wall vs wall-hung

Close-coupled toilets are generally the simplest choice for replacing an existing WC. Back-to-wall pans provide a cleaner appearance while keeping the toilet floor-mounted. Wall-hung toilets create the most open floor area but require a compatible frame and concealed cistern.

If the bathroom is already finished and you want to minimise building work, close-coupled may be the easiest route. During a full renovation, concealed systems become easier to plan because walls, floors and furniture can be designed around them from the start.

Rimless toilets

A rimless toilet is designed without the traditional enclosed flushing rim around the top of the pan. This leaves fewer hidden areas for dirt and limescale to collect and makes the bowl easier to wipe clean.

Rimless technology is available on close-coupled, back-to-wall and wall-hung products. The Nuie Freya comfort-height rimless toilet combines rimless flushing with a taller seating position.

Comfort-height toilets

Comfort-height toilets position the seat slightly higher than many standard pans. The extra height can make sitting down and standing up easier for taller users, older people or anyone with reduced mobility.

Examples include the Hudson Reed Richmond comfort-height toilet and the rimless Nuie Freya linked above. Measure the finished seat height rather than relying only on the description because dimensions vary between manufacturers.

Toilet projection and small bathrooms

Projection is the distance the toilet extends from the wall into the room. This is one of the most important measurements in a small bathroom or cloakroom. A difference of 50mm can have a noticeable effect on clearance in front of the toilet or movement around a nearby basin or door.

Compact pans reduce projection, while wall-hung and back-to-wall systems can also improve the visual sense of space. Remember that a concealed cistern and frame still need physical depth behind the pan, even though the room looks cleaner.

Toilet width and side clearance

Measure the pan width as well as projection. The toilet needs comfortable clearance from walls, vanity units, radiators and shower screens. Very narrow gaps also make cleaning difficult.

If you are replacing a toilet in an existing recess, check the widest point of the ceramic rather than measuring only the cistern. Some traditional pans are significantly wider than contemporary designs.

Soil pipe position

The toilet outlet connects to the soil system through a pan connector. Existing soil-pipe position can influence which toilet is easiest to install. Connections may run horizontally through the wall, vertically through the floor or offset to one side using suitable connectors.

Before ordering, measure the outlet location and compare it with the new pan. Back-to-wall and fully shrouded pans hide more of the plumbing, which can reduce the space available for unusual connector arrangements.

What is a fully shrouded toilet?

A fully shrouded close-coupled toilet has ceramic sides extending back toward the wall so much of the pipework is hidden. It gives a cleaner appearance than an open-backed close-coupled pan while still keeping the cistern visible.

Shrouding can make pipe access tighter, so confirm the existing soil and water connections can be routed within the available space before choosing the pan.

Concealed cisterns

Back-to-wall and wall-hung toilets normally need a concealed cistern. For wall-hung toilets, the cistern is typically integrated into a structural support frame that carries the user's weight and fixes securely to the building structure.

Check whether the pan, frame, cistern and flush plate are sold together or separately. Components should come from compatible systems because flush plates and valves are not universally interchangeable.

Dual-flush toilets

Dual-flush mechanisms provide two flush volumes, usually a smaller flush for liquid waste and a larger flush for solid waste. They are common on modern cisterns and can reduce unnecessary water use compared with using a full flush every time.

The flush button or plate should be compatible with the cistern. On concealed installations, the flush plate can also provide servicing access, so its position needs to remain accessible after tiling or furniture installation.

Toilet seats

Some toilets include a seat while others require one separately. Soft-close seats reduce slamming, while quick-release hinges make cleaning around fixing points easier.

Toilet-seat shape is not universal. D-shaped, square and rounded pans require matching seats, and fixing-hole centres can differ. If the seat is included with the toilet, keeping the product model information makes future replacement easier.

Traditional toilets

Traditional toilet designs use more decorative shapes, stepped cisterns and period-style detailing. They pair well with crosshead taps, pedestal basins and traditional baths.

Traditional styling does not prevent modern internals. Many products still use dual-flush mechanisms and contemporary inlet valves while keeping a classic external appearance.

Modern toilets

Contemporary toilets typically have smoother ceramic surfaces, straighter lines and more concealed pipework. Rimless pans, back-to-wall formats and wall-hung systems are especially common in modern bathrooms.

Think about how the toilet coordinates with the basin and furniture. Mixing a strongly square toilet with a very rounded basin can look accidental unless the contrast is intentional.

Replacing an existing toilet

Measure the existing pan projection, overall width, soil-pipe position, water inlet location and cistern height before removal. Photographing the connection area can also help when discussing replacement options with an installer.

A toilet with very similar external dimensions can still have a different outlet location. Allow for pan connectors and isolation valves rather than assuming a direct swap.

Toilet buying checklist

• Choose close-coupled, back-to-wall or wall-hung.
• Measure pan projection, width and finished seat height.
• Check the soil-pipe direction and position.
• Allow space for water inlet and isolation valve connections.
• For concealed systems, confirm frame and cistern compatibility.
• Check whether the toilet seat is included.
• Consider rimless flushing for easier cleaning.
• Choose comfort height where a taller seat would help.
• Plan servicing access before boxing in a concealed cistern.

Frequently asked questions

What is the easiest toilet to replace?

A close-coupled toilet with similar dimensions and outlet position to the existing pan is often the simplest replacement, although pipework may still need adjustment.

Is a back-to-wall toilet the same as a wall-hung toilet?

No. A back-to-wall pan stands on the floor with the cistern concealed. A wall-hung pan is suspended from a support frame and leaves the floor clear underneath.

Are rimless toilets better?

Rimless designs are easier to clean around the top of the bowl because there is no enclosed flushing rim. Flush performance still depends on the individual toilet design and correct installation.

What is a comfort-height toilet?

It has a higher seating position than many standard toilets, which can make sitting and standing easier for some users.

Shop toilets online

Browse toilets online including close-coupled, back-to-wall, wall-hung, rimless and comfort-height designs. Measure the room and soil connection first, then choose the toilet style that fits both the plumbing and the bathroom layout.