The HDWS 1000 L heat pump solar storage tank was specially developed for demanding use in combination with heat pumps and solar systems. Thanks to the latest technology and high-quality materials, it ensures effective heat transfer and thus optimizes the operation of your heating system.

With innovative insulation processes and first-class workmanship, this storage tank offers a reliable and long-lasting solution. It is available in two different insulation variants: For types up to 600, a 75 mm PUR rigid foam (directly foamed) is used, while from type 750 onwards, a fleece insulation (Made in Germany) is used.

Product features at a glance

• Insulation: Ecoline fleece insulation (Made in Germany)
• Two double-wound smooth tube heat exchangers (1 inch tube) for efficient heat transfer
• Highest processing quality thanks to robust quality steel S275JR according to EN 10025 and EN12897:2006
• Enamelled according to DIN 4753 for long-lasting corrosion protection
• Operating pressure: 10 bar
• test pressure: 16 bar
• Maximum operating temperature: 95°C
• Up to 5 years warranty (with proven maintenance)