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Efficient heat storage for solar thermal installations with space heating support

The RATIO buffer storage tank is an excellent steel buffer storage tank for application in solar-assisted space heating or for use in combination with a solar system and solid fuel boiler. The RATIO buffer tank is also ideally suited for combination with our fresh water unit RATIOfresh.

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Your benefits:

  • High-quality steel buffer storage tank
  • Low heat losses thanks to optimal thermal insulation
  • Optional CONVECTROL III convection brakes to reduce heat loss through connections


Energy-saving convection brakes

convectrolOur patented CONVECTROL convection brakes fitted within the pipe connections prevent uncontrolled heat escape. The heat losses at the pipe connections of a solar storage thus can be reduced by up to 50 %.

We employ RATIO buffer tanks for most of our solar space heating systems.
The second heat exchanger in the upper section enables simple linking with all gas or gas condensing boilers.

Our competent partner installers and planners will be pleased to advise you which solar storage tank is best suited for your application.
You don't have a Wagner Solar specialist available to you yet? Talk to us!


Your installer will be happy to advise you on which product is best suited to your application.

Dear interested customers,
Up to this point, we have always tried to find you a suitable specialist company in your area. Due to the current high demand, many of our specialist companies have hardly any free capacity. Therefore, a mediation on the part of Wagner Solar can not take place at the moment. We ask for your understanding.

Your Wagner Solar Team