Mira Sport Single Outlet Electric Shower 9.8kW

In-Depth Look

Electric showers remain essential in the UK market. They provide hot water on demand without relying on a boiler, making them the standard choice for en-suites, second bathrooms, and properties where the hot water system cannot support multiple outlets simultaneously.

Thermostatic Stabilisation

The key feature that sets the Mira Sport apart from basic electric showers is its thermostatic stabilisation. When someone runs a tap or flushes a toilet elsewhere in the house, the cold mains pressure to the shower drops momentarily. In a basic electric shower, this causes a sudden spike in temperature. The Mira Sport detects this pressure change and compensates, maintaining a consistent shower temperature.

Electrical Requirements

A 9.8kW electric shower draws significant current and requires a dedicated 40A circuit with 10mm2 cable. The cable size may need to increase for longer runs. This is a job for a qualified electrician, and Part P notification or certification is required. Installers should verify the existing consumer unit can accommodate the additional circuit before quoting the job.

Verdict

The Mira Sport 9.8kW is the dependable electric shower that works in virtually any UK property. The thermostatic stabilisation genuinely improves the showering experience, and Mira’s UK-based support and parts availability give both installers and homeowners long-term confidence.

How It Compares

The Mira Sport is an electric shower, which means it heats cold mains water as it flows, rather than mixing hot and cold water from a boiler or cylinder. That is the main point to weigh up when comparing it with other showers. An electric shower works independently of the boiler, so it suits en-suites, second bathrooms, combi or system boiler homes and rentals where the hot water system cannot supply two outlets at once.

The other big category is the thermostatic mixer shower. A mixer takes hot and cold supplies and blends them, so flow is limited by the plumbing rather than by an element’s heating power. Mixers can deliver stronger flow and keep it consistent through the year, but they need a good hot and cold supply and, in some homes, a pump. An electric shower is simpler to install in the right place, with no hot water pipework to the shower, but it cannot match the flow of a thermostatic mixer.

Triton and Aqualisa also make electric showers, such as the Triton T80 and Amore ranges. Rather than looking for numbers across brands, compare the points that matter for the install: the power rating, how temperature is controlled, the showerhead and the manufacturer’s installation requirements. A higher-rated model, including others in the Mira Sport range, will need to be matched to the electrical supply in the same way.

What marks out this model is the thermostatic stabilisation, which keeps the temperature steadier when someone runs a tap or flushes the toilet elsewhere. It also has a phased shutdown to clear residual hot water, a four-spray showerhead and easy-clean nozzles that resist limescale build-up. It has a two-year warranty.

The main limits are electrical. A 9.8kW unit needs a dedicated 40A circuit and 10mm² cable as a minimum, and longer runs may need thicker cable. Check the consumer unit has capacity before you commit to the job.

Common Questions

Do I need a 40A circuit and 10mm² cable, and should an electrician fit it? Yes. The specification calls for a dedicated 40A circuit and 10mm² cable, and the cable size may need to increase for longer runs. This is a job for a qualified electrician, and Part P notification or certification applies. The electrician should also check that the consumer unit has room for the circuit.

Why is the water cooler in winter? The element heats the water by a fixed amount, and in winter the incoming cold mains water is colder to start with. The same heat gives a lower final temperature. To get the water hotter, reduce the flow rate. This is a normal characteristic of electric showers, and it explains why flow is lower than a mixer shower in winter.

What minimum water pressure does it need? The minimum flow pressure is 0.7 bar. It is a cold mains fed shower, so it relies on the mains supply rather than a tank. If your mains pressure is low, the shower may not work as expected. Check the pressure at the pipe before buying.

Can it be fitted in any bathroom zone? The shower is rated IPX4, but position within a bathroom is governed by the wiring regulations, BS 7671, and by the manufacturer’s installation instructions. Zones, RCD protection and the isolating switch must all be right. Do not guess. Have a qualified electrician decide where it can go and fit it.