A concealed cistern — also called an in-wall cistern or hidden cistern — is a water tank that is installed behind the bathroom wall, invisible from the room. Used with wall-hung (floating) toilets, concealed cisterns give bathrooms a clean, modern, minimalist look that is impossible to achieve with traditional exposed tank toilets.
In Kenya, concealed cisterns are becoming increasingly popular in new builds, high-end apartments, and hotel renovations. This guide covers how they work, what they cost, and everything you need to know before installing one.
How a Concealed Cistern Works
The system has three main components:
- Carrier frame (steel frame): A heavy-duty steel frame bolted to the floor and wall that supports the weight of the toilet and the user (up to 400kg in most designs). This is what the toilet bowl hangs from.
- In-wall cistern: The water tank clips into the carrier frame and sits behind the wall. It connects to your water supply on one side and the toilet's flush outlet on the other.
- Flush plate: A decorative panel flush-mounted into the finished wall surface (tile or plasterboard). Pressing the flush plate activates the cistern. Available in chrome, matte black, matte white, and other finishes.
The wall-hung toilet bowl mounts onto brackets on the carrier frame. The cistern is enclosed behind wall tiles or a duct panel — completely hidden from view.
Concealed Cistern Products at Ziann Africa
Buildcor Concealed Cistern
In-wall concealed cistern with steel carrier frame and dual-flush mechanism. Compatible with Buildcor wall-hung toilet bowls. Robust build for Kenyan construction standards.
View PriceBuildcor Wall Hung Toilet + Concealed Cistern Set (White)
Complete wall-hung toilet set: ceramic bowl, carrier frame, in-wall cistern, flush plate, and all fittings. Available in white gloss finish.
View PriceWall Hanging Toilet + Concealed Cistern (Matte Black)
Premium matte black wall-hung toilet with concealed cistern. A statement piece for contemporary Kenyan bathrooms and luxury hotels.
View PriceConcealed Cistern Price in Kenya (2026)
| Product | Price (KES) | Notes |
|---|---|---|
| Concealed Cistern Only (with frame) | KES 18,000 – 28,000 | Requires separate wall-hung bowl |
| Wall Hung Toilet + Concealed Cistern (White) | KES 28,000 – 45,000 | Complete set, ready to install |
| Wall Hung Toilet + Concealed Cistern (Matte Black) | KES 38,000 – 58,000 | Premium finish, luxury bathrooms |
| Wall Hung Toilet + Concealed Cistern (Matte Grey) | KES 35,000 – 55,000 | Contemporary, neutral finish |
Step-by-Step: How Concealed Cistern Installation Works
Advantages of a Concealed Cistern
- Cleaner look: No visible tank — the bathroom looks seamlessly modern
- Floor cleaning is easy: No floor contact means no hard-to-clean base
- Height adjustable: The bowl can be mounted at any comfortable height
- Space saving: The cistern uses wall cavity space rather than floor space
- Quieter flush: The in-wall position muffles flush noise
Frequently Asked Questions
How much does a concealed cistern cost in Kenya?
A concealed cistern with steel carrier frame costs KES 18,000 to KES 28,000. A complete wall-hung toilet set (bowl + cistern + frame) ranges from KES 28,000 to KES 58,000 depending on the finish. Available at Ziann Africa Nairobi.
Can a concealed cistern be repaired if it leaks?
Yes. While the cistern is hidden behind the wall, the flush plate can be removed to access the cistern internals (fill valve, flush valve). Most repairs are done without breaking tiles. However, serious leaks may require opening the duct wall, which is why waterproofing the wall cavity properly during installation is critical.
Can I add a concealed cistern to an existing bathroom?
Yes, but it involves building a new duct wall in front of an existing wall — which reduces the bathroom size slightly. It is most cost-effective when done during a full bathroom renovation. Ziann Africa can advise on the best approach for your space.
What flush plate finishes are available?
Available in chrome, matte white, matte black, and brushed nickel — to match your taps, fittings, and overall bathroom design scheme.
Ready to upgrade your bathroom with a wall-hung toilet and concealed cistern? WhatsApp us at 0768 282 934 for a site visit, design advice, or to order your complete set online at ziannafrica.co.ke.