Buffertanks

A buffer tank is a water storage tank that temporarily stores heat and then releases it evenly into the heating system. It functions like a battery that absorbs temperature fluctuations and ensures a more stable heat supply. Buffer tanks are often used in combination with boilers or heat pumps to make the heating process more reliable and efficient.

A buffer tank is especially useful when heat demand fluctuates, for example during peak loads or when several distribution systems need to be supplied at the same time. It also prevents unnecessary switching when the heat source is not sufficiently modular. In temporary situations such as construction projects, events, or process heating, a buffer tank helps maintain consistent comfort and reliability.

A buffer tank stabilises the supply and return temperatures of the system, ensuring smoother operation. It prevents boilers or heat pumps from constantly switching on and off, which increases efficiency and extends service life. Buffer tanks also absorb demand peaks and provide hydraulic separation, allowing the flows on the source side and the distribution side to operate independently and with better control.

We rent out the MWS-500 Buffer Tank and the T-300 Buffer Tank with pump. These cover capacities of around 300 to 500 litres. Depending on your project, we advise which volume and configuration best suits your heat source and distribution system.

A buffer tank with pump, such as the T-300, is equipped with an integrated circulation pump that supports and regulates the water flow. A buffer tank without pump, such as the MWS-500, relies on the pumps already present in the heat source or distribution system. The right choice depends on the required flow rate, pipe length, and control needs.

A buffer tank is installed between the heat source and the distribution system via supply and return connections. Key components include proper sensor placement, air vents, safety devices, an expansion vessel, and good insulation. This ensures safe and efficient operation of the system.

Yes, buffer tanks are ideal in combination with underfloor heating because they make the heating-up and cooling-down protocol easier to follow, reducing the risk of cracks in the floor. When combined with a fresh water module, a buffer tank can also serve as a buffer for hygienic domestic hot water supply.

Yes, our technical advisors are happy to help determine the right buffer tank. Based on your heat source, distribution system, and required capacity, you will receive tailored advice to ensure a reliable and efficient installation.