Hot Water Cylinders and Buffer Tanks for Heat Pumps

Heat Logic supplies heat pump hot water cylinders and buffer tanks designed to support efficient hot water and home heating across New Zealand. Our range includes Flexi Tanks, Buffer Tanks and Combi Tanks, with options to suit your home’s needs.

Reliable water storage tanks

The Difference Between Hot Water Cylinders and Buffer Tanks

The main difference is how the water is used. Hot water cylinders store clean water for everyday household use, while buffer tanks hold water that circulates through your home’s heating system, such as underfloor heating or radiators. The two serve separate purposes, even when connected to the same heat pump.

Heat Logic offers Flexi Tanks for domestic hot water, Buffer Tanks for home heating systems, and a Combi Tank that brings both functions together in one unit. Explore the range below to find the right option for your home.

A compact hydronic unit that integrates heating distribution and hot water storage into one streamlined system.

A versatile hydraulic tank that supports efficient circulation and seamless integration within air-to-water heat pump systems.

A control-focused hydraulic unit designed to manage system communication and coordinated operation in heat pump installations.

A compact hydraulic buffer tank designed to stabilize system flow and improve heat pump efficiency within small to mid-sized installations.

A larger-capacity hydraulic buffer tank that supports enhanced system stability, consistent flow rates, and improved overall heat pump performance.

A versatile hydraulic buffer tank with an integrated coil for additional circuit support, helping improve system efficiency and maintain optimal flow conditions.

Choosing the Right Tank

What Type and Size of Tank Do I Need for My Heat Pump?

Choosing the right tank for your air to water heat pump depends on your household’s hot water needs and how your home is heated. Different tanks serve different purposes, and the right size will depend on your overall system design.

Hot Water Cylinders

If your heat pump supplies domestic hot water, the cylinder size will depend on factors such as the number of people in your household, bathrooms and daily hot water usage. Heat Logic offers 220L and 300L Flexi Tanks to suit different system requirements.

Buffer Tanks

If your heat pump supplies underfloor heating or radiators, a buffer tank may be needed to provide additional water volume and support stable system operation. Heat Logic offers 45L and 100L buffer tank options, with the appropriate size determined by your heating system’s requirements.

Combi Tanks

For systems requiring both domestic hot water storage and heating buffer capacity, Heat Logic’s HL240/70 Combi Tank conveniently combines both functions in one unit, reducing the need for separate tanks and helping save space in your home.

Not sure which tank is right for your home?

Contact Heat Logic to discuss your hot water and heating requirements. Our team can help you explore the available options and find a suitable solution for your home.