Can a Heat Pump Heat My Hot Water?

Yes, a heat pump heats both your home and your hot water. In fact, this is one of the key benefits of switching, you replace both your boiler and your hot water system in one go.

Unlike a combi boiler that heats water on demand, a heat pump system uses a hot water cylinder (typically 200-300 litres) to store hot water. The heat pump heats the water in the cylinder to around 48-52°C throughout the day.

To protect against Legionella bacteria, the system periodically heats the cylinder to 60°C using a built-in immersion heater. This is a standard safety measure required by building regulations and uses minimal additional electricity.

A 200-litre cylinder is sufficient for most households of 2-3 people. Larger families (4+) typically need a 250-300 litre cylinder. We assess your hot water usage during the survey to recommend the right size.

Your smart thermostat allows you to schedule hot water heating during off-peak electricity hours (typically overnight), when tariffs are cheapest. This can reduce your hot water costs by 30-50% compared to heating at standard rates.

The hot water from a heat pump system feels identical to what you're used to, plenty hot enough for showers, baths, and washing up. The cylinder ensures you always have a ready supply of hot water when you need it.