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Buffer cylinders for heating water

SPU-2 & SPU-2-W

The WOLF SPU-2 heating water storage cylinder is the perfect reservoir for storing hot heating water produced by your heat generator either in detached houses or apartment buildings. The buffer cylinder has high-quality thermal insulation which also helps you save energy. 

With or without solar central heating backup

  • SPU-2

    The simple design of the WOLF SPU-2 offers excellent value for money without compromising on good storage properties.

    Available in the versions SPU-2-500, SPU-2-800, SPU-2-1000 and SPU-2-1500 with cylinder sizes from 500 to 1500 litres, it covers a wide range of applications from detached houses to apartment buildings.

    WOLF Buffer tank SPU-2
  • SPU-2-W

    The SPU-2-W solar water cylinder is available as an alternative. This cylinder is equipped with an additional solar heat exchanger for connecting to a solar thermal technology system. The solar buffer cylinders SPU-2-W-500, SPU-2-W-800, SPU-2-W-1000 and SPU-2-W-1500 are also available with cylinder volumes from 500 to 1500 litres.

Benefits of WOLF buffer cylinders

WOLF Storage tank SPU-2

Buffer cylinders boost efficiency

Fewer burner starts

The SPU-2 and SPU-2-W buffer cylinders improve the efficiency of your heating system. Thanks to the buffer effect, your heating does not need to start up as often. This saves energy and cuts the cost of heating.

No oversized elements

A heating system with a WOLF buffer cylinder can bridge times when the house needs extra heating, such as during freezing cold winter nights. This means that there is no need to install an oversized and inefficient heat generator to cope with these rare occasions. And you do not have to compromise on comfort. Read more

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Long service life

Minimal wear

Wear is reduced because the heating system gets by with fewer burner starts. Your heating system will last all the longer.

Robust workmanship

WOLF buffer cylinders are robust and have a particularly long service life.

Oil boiler TOB - Couple having dinner

Experienced team

Cylinders for any situation

Whether you want to use the cylinder with a gas boiler, oil heating system, heat pump or solar thermal technology: WOLF buffer cylinders are equipped for all heating technology requirements.

Ideal combinations

WOLF system modules can be combined to create the perfect heating system, all from a single source.

Perfectly in tune with you.

Made in Germany
& German engineering

Put your trust in premium quality from our Bavarian development and production site. We manufacture durable, robust and reliable appliances. 

Made in Germany
& German engineering

Put your trust in premium quality from our Bavarian development and production site. We manufacture durable, robust and reliable appliances. 

WOLF know-how
Over 50 years of experience

We have been developing indoor environment solutions for decades. Always in line with our motto “Perfectly in tune with you”.

WOLF know-how
Over 50 years of experience

We have been developing indoor environment solutions for decades. Always in line with our motto “Perfectly in tune with you”.

All-rounders & experts
Heating, ventilation & air handling

We supply complete solutions from a single source. Benefit from a perfectly coordinated system with a unified control scheme and a single expert advisor. 

All-rounders & experts
Heating, ventilation & air handling

We supply complete solutions from a single source. Benefit from a perfectly coordinated system with a unified control scheme and a single expert advisor. 

Smart homes
Modern homes

Smart home technology lets you control your heating system, ventilation and many other appliances from wherever you are. 

Smart homes
Modern homes

Smart home technology lets you control your heating system, ventilation and many other appliances from wherever you are. 

Made in Germany
& German engineering

Put your trust in premium quality from our Bavarian development and production site. We manufacture durable, robust and reliable appliances. 

WOLF know-how
Over 50 years of experience

We have been developing indoor environment solutions for decades. Always in line with our motto “Perfectly in tune with you”.

All-rounders & experts
Heating, ventilation & air handling

We supply complete solutions from a single source. Benefit from a perfectly coordinated system with a unified control scheme and a single expert advisor. 

Smart homes
Modern homes

Smart home technology lets you control your heating system, ventilation and many other appliances from wherever you are. 

Also suitable for DHW heating

Combined with a freshwater station, WOLF buffer cylinders provide instant and hygienic DHW heating.

Technical details

  • SPU-2 buffer cylinder

    Model type
    SPU-2
    2000
    3000
    4000
    5000
    Cylinder volume
    litres
    1950
    2700
    3950
    4950
    Height excl. thermal insulation / air vent valve
    G mm
    2400
    2480
    2590
    2830
    Height including thermal insulation
    H mm
    2480
    2560
    2670
    2910
    Diameter including thermal insulation
    I mm
    1300
    1450
    1700
    1800
    Diameter excl. thermal insulation
    J mm
    1100
    1250
    1500
    1600
    Height when tilted, including thermal insulation
    mm
    2800
    2950
    3150
    3400
    Height when tilted, excl. thermal insulation
    mm
    2550
    2650
    2850
    3100
    Weight
    kg
    253
    298
    486
    603

    SPU-2 buffer cylinder

    Cylinder volume (litres)
    1950
    2700
    3950
    4950
    Height excl. thermal insulation / air vent valve (G mm)
    2400
    2480
    2590
    2830
    Height including thermal insulation (H mm)
    2480
    2560
    2670
    2910
    Diameter including thermal insulation (I mm)
    1300
    1450
    1700
    1800
    Diameter excl. thermal insulation (J mm)
    1100
    1250
    1500
    1600
    Height when tilted, including thermal insulation (mm)
    2800
    2950
    3150
    3400
    Height when tilted, excl. thermal insulation (mm)
    2550
    2650
    2850
    3100
    Weight (kg)
    253
    298
    486
    603
  • Buffer cylinder SPU-2-W

    Type
    SPU-2 800plus
    SPU-2 1000plus
    SPU-2 1500plus
    Cylinder volume
    l
    795
    980
    1530
    Diameter including thermal insulation
    mm
    990
    990
    1200
    Diameter excl. thermal insulation
    mm
    790
    790
    1000
    Total height including thermal insulation
    mm
    1785
    2135
    2235
    Height when tilted, including thermal insulation
    mm
    2050
    2360
    2540
    Height when tilted, excl. thermal insulation
    mm
    1750
    2090
    2270
    Weight
    kg
    109
    130
    205

    Buffer cylinder SPU-2-W

    Cylinder volume (l)
    795
    980
    1530
    Diameter including thermal insulation (mm)
    990
    990
    1200
    Diameter excl. thermal insulation (mm)
    790
    790
    1000
    Total height including thermal insulation (mm)
    1785
    2135
    2235
    Height when tilted, including thermal insulation (mm)
    2050
    2360
    2540
    Height when tilted, excl. thermal insulation (mm)
    1750
    2090
    2270
    Weight (kg)
    109
    130
    205

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