Hot-water systems · Gravity-fed systemGravity-fed system
Gravity-fed system
A tank in the loft.
A cold-water tank in the loft feeds a hot-water cylinder, and gravity provides the pressure. Common in older homes, often with low shower pressure.
- Tank
- In the loft
- Pressure
- Depends on tank height
- Often
- Low
- Boost with
- A pump
What it is
Water falls from the loft tank to the cylinder and taps; the higher the tank above an outlet, the better the pressure.
Good for
Volume
A store of hot water for baths.
Simple
Few moving parts.
What to weigh up
Pressure
Showers can feel weak without a pumped or power shower.
Top-floor bathrooms
Less height means less pressure.
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