If your home has a gravity-fed water system, you might be wondering whether a mixer shower is a viable option. The answer is yes, you absolutely can use a mixer shower with a gravity-fed system, but a few key factors will affect performance.
At Aqualisa, we design mixer showers to work across a wide range of UK plumbing systems, including gravity-fed setups. Here’s what you need to know.
What Is a Gravity-Fed System?
A gravity-fed water system is common in older UK properties. It typically features:
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A cold water storage tank in the loft
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A hot water cylinder in an airing cupboard
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Water flow that relies on gravity, not mains pressure
This setup often results in low water pressure, especially in upstairs bathrooms or where the cold water tank isn’t significantly elevated.
Will a Mixer Shower Work?
Mixer showers blend hot and cold water to your preferred temperature. They rely on reasonably balanced water pressure from both supplies, something gravity-fed systems can struggle to deliver.
You might notice:
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Weak water flow
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Temperature fluctuations
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An underwhelming shower experience
But don’t worry, with the right approach, you can still enjoy an excellent mixer shower experience.
How to Get the Best Performance
1. Choose a Mixer Shower Designed for Low Pressure
Some Aqualisa mixer showers are engineered specifically for low-pressure systems (as low as 0.1 bar). Always check the product specifications for pressure compatibility before buying.
2. Consider a Shower Pump
Installing a pump can dramatically boost flow, transforming a dribble into a powerfully satisfying shower.
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Twin impeller pumps boost both hot and cold supplies.
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Single impeller pumps boost one supply (usually hot).
Speak to a qualified installer to ensure your setup is pump-compatible.
3. Ensure Balanced Pressure
Unequal pressure between hot and cold supplies can affect performance. Balancing the system, either through pipework adjustments or a pump, ensures consistent temperature control.
Other Factors to Consider
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Height of Cold Water Tank: The greater the vertical distance (“head height”) between your shower and the tank, the better the natural pressure. A minimum of 1 metre is ideal.
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Pipework: Old or narrow pipework can restrict flow. A plumber can advise if upgrades are necessary.
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Thermostatic Control: Aqualisa thermostatic mixer showers help maintain safe, consistent temperatures: ideal for family bathrooms or shared households.
The Aqualisa Difference
Aqualisa has over 40 years of showering expertise. Whether you choose an exposed or concealed mixer, we offer solutions built for British homes and plumbing systems, including those with gravity-fed water supplies.
Explore our full range of mixer showers designed for style, safety, and superb performance.
