Key Information:

• Thermal injected polyurethane insulation combined with vacuum panels
• Large diameter, smooth coil technology
• Global Warming Potential less than 5 and ozone depletion of 0
• Thermodynamically positioned sensor pocket
• Expansion vessels included or available as accessories
• 25-year guarantee

What's Included:

• Vaillant uniSTOR 250L Pre-plumbed Unvented Indirect Cylinder - 20237132

Pre-plumbed for easy installation, the Vaillant uniSTOR 250L Pre-plumbed Unvented Indirect Cylinder combines convenience with efficiency to create a world-class water heating solution.

Automatic descaling

The automatic descaling provides a handy solution for maintenance. It's designed with efficiency and practicality in mind!

Unvented cylinder

As these cylinders are unvented, they operate more efficiently under high pressures, for instance in a sealed heating system.

Made from stainless steel

Stainless steel is perfect for unvented cylinders as it possesses corrosion resistant properties. Moreover, it has excellent durability and can withstand high temperatures - perfect for a heat pump cylinder.

Compatible with Vaillant heat pumps

The Vaillant uniSTOR 250L Pre-plumbed Unvented Indirect Cylinder is compatible with Vaillant heat pumps, and the large coil size makes this cylinder compatible with a wide range of ground source heat pump systems.