What Size Electric Shower Is Best for My London Home?
Choosing the right size electric shower depends on water pressure, household needs, and electrical supply. Citywide Plumbers helps London homeowners select and install the perfect unit for safe, efficient performance.
Electric showers are an excellent choice for many London homes. They heat water on demand and work independently of your boiler, making them ideal for households with unpredictable hot water supply. But one common question we receive at Citywide Plumbers is: “What size electric shower is best for my home?”
Understanding Shower Sizes (kW Ratings)
Electric showers are sized by their power rating in kilowatts (kW). This rating determines how quickly the shower can heat water—and how strong the flow will be. Common sizes include:
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7.5 kW – 8.5 kW: Ideal for homes with lower water pressure or older electrical systems.
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8.5 kW – 9.5 kW: A good middle ground—suitable for most London properties.
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10.5 kW and above: Offers stronger flow and better heating but requires a high-capacity electrical supply.
The higher the kW rating, the more powerful the shower, but it also requires a stronger electrical circuit and sufficient water pressure.
What Factors Should Be Considered?
At Citywide Plumbers, we consider several key factors when recommending the ideal size for your electric shower:
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Electrical Capacity
Your consumer unit (fuse box) must support the chosen shower size. Higher kW units need thicker cabling and dedicated circuit breakers. Our team will assess and upgrade if needed.
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Water Pressure
London homes, especially in older buildings, may have variable water pressure. We ensure the chosen shower matches your pressure levels, preventing poor flow or safety risks.
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Usage Habits
If your household includes multiple people taking regular showers, a higher kW unit ensures consistent temperature and pressure.
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Installation Constraints
Smaller bathrooms may benefit from more compact units. We’ll make sure the model fits your space without compromising performance.
Expert Installation with Citywide Plumbers
Selecting the right size is only part of the job. Installation must comply with UK safety regulations, including:
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Part P Building Regulations
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18th Edition Wiring Rules
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WRAS (Water Regulations Advisory Scheme)
Our qualified engineers are trained in both plumbing and electrical installation, eliminating the need to hire multiple trades.
Avoid Common Pitfalls
Choosing a shower that’s too powerful for your current setup can lead to tripped circuits, leaks, or even fire risks. On the other hand, underpowered showers provide poor flow and temperature fluctuation.
Let Citywide Plumbers guide you through the process—from selection to full installation—with no shortcuts and no hidden fees.
Call the Experts Today
Whether you’re replacing an old unit or installing a new one, the right electric shower can improve your daily routine and reduce energy usage.
Call Citywide Plumbers on 02038928545
Email us at info@citywideplumbers.co.uk
We’ll help you find the perfect size for your property—backed by expert advice and quality workmanship.