Heat Pump Buffer Tank for Heating and Cooling Systems

The Heat Pump Buffer Tank is designed to add thermal storage capacity to hydronic heating and cooling systems. By increasing the water volume within the system, it helps smooth temperature fluctuations and provides a more stable operating environment for heat pumps and other heating sources.

It is suitable for residential, commercial, and light industrial HVAC systems where stable water temperature and flexible system operation are important.

Improve System Stability

Heat pump systems can experience frequent start-stop operation when the system water volume is relatively small or when heating and cooling demand changes quickly. A buffer tank adds additional thermal mass to the water circuit, helping reduce rapid temperature changes and unnecessary cycling.

This makes the tank a useful component for systems using:

• Air source heat pumps

• Ground source heat pumps

• Boilers

• Solar thermal systems

• Underfloor heating

• Fan coil systems

• Hydronic heating and cooling

Flexible Solution for Different HVAC Designs

The tank can be incorporated into various hydronic system layouts according to the required water volume, connection size, and heat source configuration.

With capacities ranging from 60L to 500L, installers and system designers can select a suitable tank size for different applications and project requirements.

Durable Inner Tank Options

To accommodate different project conditions, the inner tank is available in SUS304, SUS316L, and Duplex 2205.

The external casing can be supplied in painted galvanized steel or SUS304 stainless steel, providing different options for installation environments and project requirements.

The tank is rated for a maximum working pressure of 8 bar.

Insulation for Reduced Heat Loss

The buffer tank is equipped with 45mm or 50mm HCFC-free foam insulation. The insulated construction helps reduce heat loss from the stored water and supports more consistent system temperatures during operation.

Optional electric heating elements are available in 1.5kW, 3kW, and 4kW configurations, with an optional thermostat for additional temperature control.

Multiple Connection Options

Different connection sizes are available to suit various hydronic system designs, including:

• G1"

• G5/4"

• G6/4"

• G2"

The tank can also be configured with an air vent, drain connection, temperature sensor position, and safety valve to support practical system installation and maintenance.

Built for Hydronic Heating and Cooling

From underfloor heating and fan coil systems to heat pump-based HVAC installations, this buffer water tank provides additional thermal mass where the system requires greater water volume and temperature stability.

A practical buffer solution for improving thermal stability and system flexibility in modern heat pump and hydronic HVAC applications.