Hot Water Cylinder & Calorifier Spare Parts and Components


At World Heat Cylinders, we fully understand the critical importance of comprehensive after-sales support for both our trade partners and end-users. Consequently, we are dedicated to supplying the genuine cylinder spare parts and components you require, quickly and efficiently. Maintaining the performance and longevity of your hot water cylinder or calorifier often depends on using the correct, high-quality replacement parts. Therefore, we make it straightforward to identify and obtain the spares you need.



Collection of genuine World Heat Cylinders spare parts and components, including immersion heaters, thermostats, and valves.


Why Choose Genuine WH Cylinders Spare Parts?


WH Cylinders incorporates only the best quality components and materials in the manufacture of all our products. To ensure the continued high efficiency, safety, and reliability of your installation, we strongly recommend the use of official WH Cylinders spare parts. Using genuine parts provides several key advantages:

  • Guaranteed Compatibility: Official spares are designed to fit perfectly and function correctly with your specific World Heat unit.
  • Maintained Performance: Ensures your cylinder or calorifier continues to operate at its optimal efficiency levels.
  • Preserved Warranty: Using non-genuine parts may affect your product’s warranty terms.
  • Safety Compliance: Genuine components meet the original safety and testing standards of the appliance.
  • Longevity: High-quality materials and manufacturing ensure durability and a longer service life for the replacement part.


Common Spare Parts & Components Available


We stock and supply a wide range of spare parts for our extensive portfolio of hot water cylinders, buffer vessels, and calorifiers, including components for domestic, commercial, and renewable energy systems. While our inventory is comprehensive, some of the most commonly requested spares include:

  • Immersion Heaters: Various ratings (e.g., 3kW, 6kW, incoloy, titanium) and thermostat options.
  • Thermostats: Control thermostats, high-limit thermostats, and combined units.
  • Safety Valves: Pressure relief valves (PRVs), temperature & pressure relief valves (T&P valves).
  • Expansion Vessel Components: Including charging valves and mounting brackets (complete expansion vessels may be ordered as main units).
  • Gaskets & Seals: For inspection hatches, immersion heaters, and other flanged connections.
  • Anodes: Sacrificial anodes for protection in certain water conditions (primarily for specific calorifier types).
  • Control System Components: Sensors, wiring centres, and control panel spares for pre-plumbed units.
  • Specialist Fittings & Connections: Unique components specific to certain WH Cylinders models.

This list is not exhaustive. If you require a part not listed, please contact us with details of your unit, as we can likely source or manufacture it.



How to Order Your Spare Parts


To ensure we supply the correct spare part for your World Heat cylinder or calorifier efficiently, please have the following information ready when you contact us if possible:

  • Product Model Name or Serial Number: This is usually found on the identification label on the unit.
  • Approximate Age of the Unit: Helps identify potential part revisions.
  • Description of the Part Required: If known, or a description of the fault.
  • Photographs: Photos of the unit and the specific part can be extremely helpful.

Our knowledgeable technical sales team is ready to assist you in identifying and ordering the correct cylinder spare parts and components.

Please contact us directly to discuss your requirements or place an order. You can reach us by calling 0161 343 8610 or by emailing our sales team at sales@whcylinders.co.uk. Alternatively, you can use our main contact page for enquiries.