
Replacing a Mira shower can seem daunting, but with the right tools and guidance, it’s a manageable DIY task. Whether your current shower is malfunctioning, outdated, or simply in need of an upgrade, understanding the process is key. This guide will walk you through the essential steps, from turning off the water supply and removing the old unit to installing the new Mira shower and ensuring it functions correctly. By following these instructions carefully, you’ll be able to enjoy a reliable and efficient showering experience in no time.
| Characteristics | Values |
|---|---|
| Tools Required | Screwdriver, adjustable spanner, pliers, new Mira shower unit, PTFE tape, cloth/rag |
| Safety Precautions | Turn off water supply, isolate electricity (if electric shower), wear safety gloves |
| Steps to Replace | 1. Turn off water supply & isolate electricity 2. Remove existing shower unit (unscrew faceplate, detach pipes) 3. Prepare new Mira shower (check model compatibility, apply PTFE tape to threads) 4. Install new shower unit (connect pipes, secure faceplate) 5. Test for leaks & functionality |
| Common Mira Models | Mira Vie, Mira Leap, Mira Azora, Mira Sport, Mira Excel |
| Compatibility Check | Ensure new shower matches existing pipework & mounting holes |
| Warranty | Mira showers typically come with 1-5 year warranty (check specific model) |
| Maintenance Tips | Regularly clean showerhead, check for leaks, descale as needed |
| Cost Range (UK) | £100 - £500 (depending on model & features) |
| Time Required | 1-2 hours (for experienced DIYers) |
| Difficulty Level | Moderate (basic plumbing skills required) |
| Additional Resources | Mira official website, YouTube tutorials, manufacturer's manual |
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What You'll Learn
- Turn off water supply: Locate stop valve, turn clockwise to shut off water before starting replacement
- Remove old shower unit: Disconnect hoses, unscrew wall bracket, and carefully lift out the old shower
- Fit new shower unit: Align new unit, secure with screws, and attach water pipes tightly to prevent leaks
- Check for leaks: Turn water back on, test shower, and inspect connections for any dripping or moisture
- Adjust settings: Set temperature and flow rate, ensure safety features work, and clean the unit

Turn off water supply: Locate stop valve, turn clockwise to shut off water before starting replacement
Before you embark on replacing your Mira shower, a critical first step is to turn off the water supply. This might seem straightforward, but it’s a step that, if overlooked or done incorrectly, can lead to unnecessary mess and complications. The key to success lies in locating the stop valve and understanding how to operate it effectively. Typically, the stop valve is situated near the shower unit, often under the bath, in a cupboard, or behind a panel. Familiarize yourself with its location beforehand to save time and avoid panic when you’re ready to begin.
Once you’ve identified the stop valve, the next step is to turn it clockwise to shut off the water supply. This action is crucial because it prevents water from flowing through the pipes while you’re working on the replacement. A common mistake is assuming the valve is fully closed when it’s not, so ensure you turn it until it stops completely. If the valve is stiff or difficult to turn, use a pair of adjustable pliers for extra leverage, but be careful not to apply too much force, as this could damage the valve. A smooth, controlled motion is best.
It’s worth noting that not all stop valves are created equal. Some older systems may have gate valves, which require multiple turns to shut off completely, while modern systems often feature quarter-turn ball valves for quicker operation. Understanding the type of valve you’re dealing with can save you time and frustration. If you’re unsure, test the valve by turning it off and then opening a nearby tap to confirm no water flows. This simple check ensures you’re ready to proceed without unexpected interruptions.
Finally, consider this step as a safety measure as much as a practical one. Working on a shower unit with the water still running can lead to flooding, water damage, or even injury. By taking the time to locate and properly shut off the stop valve, you’re setting the stage for a smooth and stress-free replacement process. Think of it as laying the foundation for success—a small but essential task that ensures everything else goes according to plan. With the water supply securely off, you’re now ready to tackle the next steps of replacing your Mira shower with confidence.
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Remove old shower unit: Disconnect hoses, unscrew wall bracket, and carefully lift out the old shower
The first step in replacing your Mira shower is a delicate operation: removing the old unit without causing damage to your bathroom or the new shower’s installation point. Begin by turning off the water supply to prevent accidental spills or pressure issues. Locate the isolation valve, typically found near the shower or under the bath, and turn it clockwise to shut off the flow. This ensures a dry, safe working environment.
Next, disconnect the hoses from the old shower unit. Mira showers usually have flexible hoses connected to the water inlet and outlet. Grip the nuts securing these hoses with an adjustable wrench, turning them counterclockwise to loosen. Be cautious not to overtighten or force the wrench, as this can damage the threads or the shower’s internal components. Once the hoses are free, place a bucket or towel beneath to catch any residual water.
With the hoses removed, shift your focus to the wall bracket holding the shower unit in place. This bracket is typically secured with screws, which may be hidden behind a decorative cover or directly visible. Use a screwdriver to unscrew the bracket, ensuring you keep track of the screws for potential reuse or disposal. If the screws are rusted or difficult to remove, apply a small amount of penetrating oil (e.g., WD-40) and allow it to sit for 10–15 minutes before retrying.
Finally, carefully lift the old shower unit from the wall. This step requires precision to avoid damaging tiles, grout, or surrounding fixtures. Tilt the unit slightly to clear the bracket and any remaining fixtures, then gently pull it away from the wall. If the unit is heavy or awkward to handle, enlist a helper to assist with the lifting. Once removed, inspect the wall for any signs of water damage or mold, addressing these issues before installing the new shower to ensure longevity.
By following these steps—disconnecting hoses, unscrewing the wall bracket, and lifting the unit with care—you’ll create a clean slate for your new Mira shower installation. This process not only removes the old unit efficiently but also minimizes the risk of complications during the replacement phase.
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Fit new shower unit: Align new unit, secure with screws, and attach water pipes tightly to prevent leaks
Replacing a Mira shower unit demands precision, especially when fitting the new unit. Begin by aligning the new shower unit with the existing wall fixings, ensuring it sits flush against the tiles or wall surface. Use a spirit level to confirm it’s perfectly horizontal and vertical, as even minor misalignment can affect performance and aesthetics. Mira showers often come with pre-drilled holes, so match these with the wall fixings for a seamless fit. This step is critical—poor alignment not only looks unprofessional but can also cause operational issues down the line.
Securing the unit is next, and screws are your best ally here. Use stainless steel screws to avoid rust, particularly in damp environments. Tighten them firmly but not excessively, as overtightening can strip the threads or damage the unit’s casing. Follow the manufacturer’s torque guidelines if provided, typically around 15-20 Nm for most Mira models. Double-check that the unit remains stable after securing, giving it a gentle tug to ensure it doesn’t shift. A wobbly shower unit is a recipe for leaks and future headaches.
Attaching the water pipes is where the risk of leaks becomes most apparent. Start by wrapping PTFE tape (3-4 layers) around the male threads of the pipes in a clockwise direction, ensuring full coverage. Alternatively, use pipe dope for a more permanent seal, though it’s messier and less forgiving if adjustments are needed. Connect the pipes to the shower unit’s inlets, hand-tightening first before using an adjustable spanner to secure them. Be cautious not to overtighten, as this can crack the unit’s internal components. Once connected, turn the water supply back on slowly and inspect all joints for leaks. A single drip now can escalate into a flood later.
A practical tip: before finalising the pipe connections, dry-fit the unit to ensure all components align correctly. This trial run allows you to make adjustments without the pressure of water flow. Additionally, consider installing isolation valves near the shower unit for easier maintenance in the future. These valves let you shut off water to the shower without affecting the entire system, saving time and hassle during repairs or replacements. By aligning meticulously, securing firmly, and sealing tightly, you’ll ensure your new Mira shower unit functions flawlessly for years to come.
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Check for leaks: Turn water back on, test shower, and inspect connections for any dripping or moisture
After replacing your Mira shower, the moment of truth arrives: turning the water back on. This step is both exhilarating and nerve-wracking, as it reveals whether your handiwork has paid off or if you’re in for a soggy surprise. Before you celebrate, methodically check for leaks to ensure everything is sealed tight. Start by slowly opening the water supply valves, allowing the pipes to fill gradually. This prevents sudden pressure spikes that could dislodge connections. Once the water is flowing, step into the shower and test it at various temperatures and pressures. Pay attention to the flow rate and spray pattern—any irregularities could indicate a misaligned component or hidden leak.
Next, grab a flashlight and inspect all connections, joints, and seals. Common leak points include the showerhead, hose, mixer valve, and pipe fittings. Look for dripping, moisture buildup, or even the faintest darkening of surfaces, which could signal water seepage. Run your fingers along the connections—if they feel damp or cool, you’ve likely found a problem area. Don’t overlook the wall behind the shower unit; use a moisture meter or simply press a piece of tissue paper against the tiles to check for hidden leaks. Even a small drip can lead to mold, rot, or structural damage over time, so thoroughness is key.
If you spot a leak, resist the urge to tighten fittings immediately. Over-tightening can crack plastic components or damage threads, exacerbating the issue. Instead, turn off the water supply, disassemble the problematic area, and reapply plumber’s tape or sealant as needed. For threaded connections, wrap PTFE tape clockwise around the threads in three to five layers, ensuring full coverage. For push-fit or rubber seals, inspect them for tears or misalignment and replace them if necessary. Reassemble the components carefully, following the manufacturer’s torque guidelines if available.
A comparative approach can be helpful here: think of your shower system as a network of checkpoints, each requiring validation. Just as an electrician tests every wire before closing a circuit, you must verify each connection’s integrity. This systematic approach not only identifies leaks but also builds confidence in your installation. For added peace of mind, repeat the leak check after 24 hours of regular use, as some leaks may only appear under sustained pressure or temperature changes.
In conclusion, checking for leaks isn’t just a final step—it’s a critical safeguard that ensures your Mira shower replacement is both functional and durable. By combining careful observation, methodical testing, and precise adjustments, you can avoid the headaches of water damage and enjoy a reliable shower for years to come. Remember, a leak-free installation isn’t just about following instructions; it’s about understanding the system’s vulnerabilities and addressing them proactively.
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Adjust settings: Set temperature and flow rate, ensure safety features work, and clean the unit
Once your new Mira shower is installed, the next critical step is fine-tuning its performance to ensure both comfort and safety. Start by adjusting the temperature and flow rate to suit your preferences. Most Mira showers feature a thermostatic control that allows you to set the water temperature precisely, typically within a range of 35°C to 45°C for safe showering. To adjust, turn the temperature dial slowly while testing the water with your hand or a thermometer. For flow rate, use the separate flow control knob to increase or decrease the water pressure, balancing between a gentle rinse and a powerful massage. Remember, a lower flow rate can also help conserve water, making it an eco-friendly choice.
Ensuring the safety features function correctly is paramount, especially in households with children or elderly individuals. Mira showers often include a thermostatic shutdown feature that cuts off the water supply if the temperature exceeds safe levels. Test this by turning the hot water supply off while the shower is running; the unit should automatically shut down to prevent scalding. Additionally, check the anti-scald device by adjusting the temperature to its maximum setting and verifying that the water remains within a safe range. If any safety feature fails, consult the user manual or contact a professional to address the issue promptly.
Cleaning your Mira shower unit regularly is essential to maintain its performance and longevity. Limescale buildup, common in hard water areas, can clog the showerhead and reduce water flow. To clean, remove the showerhead and soak it in a solution of equal parts white vinegar and water for at least 30 minutes. For stubborn deposits, use an old toothbrush to scrub the nozzles gently. Wipe down the shower controls and casing with a damp cloth and mild detergent, avoiding abrasive cleaners that could damage the finish. Aim to clean your shower unit monthly to prevent blockages and ensure consistent water delivery.
Finally, consider the environmental impact of your shower settings. Reducing the flow rate not only saves water but also lowers energy consumption, as less hot water is required. Pairing your Mira shower with a low-flow showerhead can further enhance efficiency without compromising on experience. By thoughtfully adjusting settings, testing safety features, and maintaining cleanliness, you’ll maximize the functionality and lifespan of your Mira shower while contributing to a more sustainable home.
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Frequently asked questions
You will typically need an adjustable spanner, a screwdriver (flat and Phillips), pliers, PTFE tape or pipe sealant, and a cloth or towel. Always refer to the Mira shower model’s specific instructions for additional tools.
Locate the isolation valve(s) for the shower, usually found near the unit or under the bath. Turn the valve(s) clockwise to shut off the water supply. If there’s no isolation valve, you may need to turn off the main water supply to your home.
Replacing a Mira shower can be a DIY task if you’re confident with basic plumbing. However, if you’re unsure or encounter complex issues (e.g., faulty electrics or pipework), it’s best to hire a qualified plumber or electrician to ensure safety and compliance with regulations.









































