Buffer vessels

Buffer vessels are well-insulated vessels that can store unused heat for later use. This heat comes from various sources, such as a heat pump, solar panels, and solar collectors. Buffer Vessels focus on heat retention, quality, and effectiveness.

What are the advantages of a buffer vessel?

Increased performance: Storing surplus heat increases the performance of the heating system. This is due to lower energy usage. The heat pump does not need to turn on and off as frequently, and unused hot water is not wasted.

Connect multiple heat sources: A buffer vessel creates a more efficient heating system by using multiple heat sources. Think of a wood or pellet stove and a solar boiler. This way, you prioritise the most cost-effective way of heating.

Prevent fluctuations in energy consumption: Peaks are caused by the constant switching on and off of the heat pump. A buffer vessel helps to absorb these peaks and ensures a continuous heat supply.

No shortages or surpluses: Ensure there is never a shortage of hot water and avoid waste. With a buffer vessel, there is always enough hot water available.

Extended heat pump lifespan: The constant switching causes wear on the water pump’s compressor. By installing a buffer vessel, less switching occurs, and the heat pump’s lifespan increases.

What is the difference between a buffer vessel and a boiler vessel?

These terms are often used interchangeably. A buffer vessel stores hot water for heating systems, while a boiler vessel stores hot water for the shower or kitchen. This is also known as domestic hot water.

Buying a buffer vessel

In our range, you’ll find buffer Vessels in various sizes, including 50 litres, 100 litres, and 200 litres. Moreover, we have buffer Vessels specifically developed for heat pumps, with different numbers of connections. Buy buffer Vessels from Vaillant and DRL, or choose a membrane expansion vessel from Reflex.