Hot Water Cylinder Installation, Replacement & Upgrades

A reliable hot water cylinder is essential for consistent hot water throughout your home or property. At Heatworks Plumbing and Heating, we install, replace, and upgrade hot water cylinders across South Wales, delivering systems that are safe, efficient, and correctly sized for demand.

Whether you’re upgrading an existing system, replacing a failed cylinder, or installing hot water storage as part of a new heating system, we provide clear advice and high-quality workmanship from start to finish.

Hot Water Cylinder Installation & Replacement

Modern hot water cylinders are designed to work efficiently with today’s heating systems, including boiler systems and air source heat pumps. We install and replace hot water cylinders across Bridgend, Port Talbot, Neath, Swansea, and Cardiff, ensuring each system is correctly specified for the property.

We install and replace:

  • Unvented hot water cylinders
  • Vented hot water cylinders
  • Cylinders for boiler-fed systems
  • Cylinders designed for heat pumps

Every installation is carefully specified to ensure adequate capacity, correct pressure, and safe operation.

Our installations include:

  • Assessment of hot water demand
  • Correct cylinder sizing and specification
  • Removal of old equipment
  • Installation and commissioning
  • Safety testing and certification

Unvented Hot Water Cylinders

Unvented cylinders provide high-pressure hot water directly from the mains and are ideal for properties with multiple bathrooms or higher hot water demand. These systems are commonly installed alongside modern central heating systems to ensure consistent performance throughout the property.

We are qualified to install and maintain unvented systems, ensuring:

  • Compliance with building regulations
  • Correct safety devices and discharge pipework
  • Reliable performance and consistent pressure

Safety is critical with unvented cylinders, and all work is carried out by suitably qualified engineers.

Cylinders for Heat Pumps & Low-Temperature Systems

Air source heat pumps require hot water cylinders designed specifically for low-temperature operation. These systems must be correctly integrated with the overall heating design to perform efficiently.

We supply and install cylinders that:

  • Maximise heat pump efficiency
  • Deliver reliable hot water performance
  • Integrate seamlessly with low-temperature heating systems

Correct cylinder selection is essential for performance, efficiency, and user comfort.

Repairs, Fault Finding & Maintenance

If your hot water system is underperforming or has failed, our engineers can diagnose faults and advise on the most effective solution, working alongside our plumbing services where required to resolve system issues properly.

We deal with:

  • Loss of hot water
  • Pressure or temperature issues
  • Faulty immersion heaters
  • Leaks or safety valve discharge
  • Age-related cylinder failures

Where repair is not viable, we’ll explain replacement options clearly and honestly.

Hot Water Cylinder Services Across South Wales

We provide hot water cylinder installation, upgrades, and repairs across Bridgend, Port Talbot, Neath, Swansea, and Cardiff.

From single-cylinder replacements to full system upgrades, we assess each property individually to ensure the correct solution is installed for long-term reliability and performance.

Domestic, Landlord & Development Projects

We carry out hot water cylinder work for:

  • Homeowners
  • Landlords and letting agents
  • HMOs and multi-unit properties
  • Renovations and new builds
  • Heat pump installations

Whether it’s a simple replacement or part of a wider heating upgrade, we deliver dependable results.

See Our Work

Why Choose Heatworks?

  • Qualified and experienced engineers
  • Unvented cylinder certified
  • Fully insured and compliant installations
  • Honest advice and clear communication
  • Trusted across South Wales

We install hot water systems properly — with safety, performance, and long-term reliability as the priority.

Hot Water Cylinder FAQs

  • What size hot water cylinder do I need?
    This depends on the number of bathrooms, occupants, and usage. We calculate this as part of the installation process.
  • What is the difference between vented and unvented cylinders?
    Unvented cylinders provide mains pressure hot water, while vented systems rely on gravity-fed tanks.
  • Can I upgrade my cylinder without replacing the whole system?
    In many cases, yes — we assess compatibility and recommend the most practical solution.

Speak to a Hot Water Specialist

If you need a hot water cylinder installed, replaced, or repaired, contact Heatworks Plumbing and Heating today. We’ll help you choose the right solution for your property.

📞 Call us or use our contact form to arrange a consultation.