Vaillant Unistor Indirect 120

Overview

The Vaillant Unistor Indirect 120 is designed to support dependable stored hot water performance in domestic heating systems. It can form part of a wider installation where the right boiler parts and compatible components are needed for long-term reliability. For heating engineers and homeowners comparing boiler accessories, this product helps complete a practical hot water setup.

The Vaillant uniSTOR 120L Unvented Indirect Cylinder is a compact, high-quality stainless steel hot water storage solution, ideal for domestic properties with either a new or existing sealed system or an open vent boiler. Designed for efficiency, this cylinder provides reliable hot water and improved performance for small to medium-sized homes.

Performance and Efficiency

• Capacity: 120 litres, suitable for smaller homes or apartments
• Improved insulation - minimises heat loss, helping reduce running costs
• High-pressure unvented design - operates efficiently in sealed heating systems, providing higher water pressure at taps and showers
• Energy-efficient upgrade - retrofitting this cylinder reduces heat loss compared to older copper cylinders with insulation jackets

Installation and Flexibility

• Retrofit-friendly - can be installed on older systems without replacing the entire setup
• Adjustable feet - allows installation on uneven ground
• Compact design - ideal for homes where space is limited, such as loft conversions
• Suitable for multiple systems - compatible with both sealed and open vent heating systems

Durability and Warranty

The uniSTOR cylinder is made from premium stainless steel, ensuring long-term durability and corrosion resistance. It comes with a 2-year guarantee on parts and labour and a 25-year guarantee on the cylinder shell, giving you peace of mind for years to come.

Why Choose Vaillant uniSTOR 120?

The uniSTOR 120L is perfect for homeowners looking to upgrade from an old vented cylinder or improve hot water performance without a full system overhaul. Its compact size, energy efficiency, and robust construction make it an ideal choice for modern homes, delivering consistent hot water and reducing energy bills.

FAQs

Q: What is the capacity of the Vaillant uniSTOR 120?

The cylinder has a 120-litre capacity, making it suitable for small to medium homes.

Q: Can it be installed on older heating systems?

Yes, the uniSTOR 120 can be retrofitted onto existing systems, allowing upgrades without replacing the entire heating system.

Q: How energy-efficient is the uniSTOR 120?

Its improved insulation reduces heat loss, making the cylinder more energy-efficient than older copper cylinders with insulation jackets, which can help lower fuel bills.

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