Our Website no longer supports Internet Explorer

As the Internet Explorer has severe security breaches and shows modern websites only to an extent we are no longer supporting it.


It is possible that our website will not be shown correctly or at all in your browser. Please download a modern browser like Google Chrome; Microsoft Edge; Mozilla Firefox; Opera or Apple Safari.

Find an expert
Contact us!
Productfinder
Career at WOLF
Close

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

Sectional image memory

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

    • 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

    • 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

      • 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

      You may be interested in

      Advice: Understanding cylinder systems

      Find out more

      Guide: Saving energy in your home

      Find out more

      Guide: Sustainable heating

      Find out more

      Hello!

      How can we help you?

      Service contact
      Customer hotline
      Finding your expert
      Important Links
      Career
      Sustainability
      Contact