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World Heat Cylinders · 0161 343 8610 · sales@whcylinders.co.uk
Domestic · Heat pump cylinder
Climacyl Heat Pump Cylinders: Maximum Efficiency & Performance
Stainless steel unvented cylinders with large-surface-area coils sized for low-temperature heat pump flow, in slim, standard and wide diameters.
- Coils sized for heat pumps (2–3 m²)
- 120–500 L standard sizes
- Duplex stainless steel vessel
- ErP class B–C
- Twin coil versions for solar
- 25 year guarantee on stainless steel unvented cylinders up to 300 litres, subject to annual servicing
- Stainless steel cylinders over 300 litres: 12 months on the vessel, against a material defect or manufacturing fault
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What’s included Specifications Datasheets & downloads
Made in Manchester- ISO 9001
- WRAS
- G3
What’s included
Supplied with every cylinder
Every Climacyl and EcoSlim heat pump cylinder comes with a full unvented kit. Heat pump models don’t need the boiler’s dual thermostat or zone valve.
- Expansion vesselTakes up the water’s expansion as it heats
- Inlet manifold blockPressure reducing valve, pressure relief valve, strainer and check valve in one block
- Temperature and pressure relief (T&P) valve
- TundishThe visible air gap on the discharge pipe
Exact kit contents can vary with the cylinder size; we confirm them on your quotation.
About our unvented kits and spare partsTechnical data
Specifications
Ecoslim heat pump cylinder — 475 mm diameter (Slim)
| Capacity (litres) | 120 | 150 | 180 | 210 |
|---|---|---|---|---|
| Height (mm) | 1208 | 1474 | 1690 | 2003 |
| Diameter (mm) | 475 | 475 | 475 | 475 |
| Coil surface area (m²) | 2.29 | 2.29 | 2.29 | 3.31 |
| ErP class | B | C | C | C |
Climacyl heat pump cylinder — 550 mm diameter (Standard)
| Capacity (litres) | 120 | 150 | 180 | 210 | 250 | 300 |
|---|---|---|---|---|---|---|
| Height (mm) | 954 | 1154 | 1280 | 1468 | 1718 | 2031 |
| Diameter (mm) | 550 | 550 | 550 | 550 | 550 | 550 |
| Coil surface area (m²) | 2.29 | 2.29 | 2.29 | 3.31 | 3.31 | 3.31 |
| Standing heat loss (W) | 51.25 | 54.58 | 66.67 | 77.08 | 87.5 | 96.25 |
| ErP class | B | B | C | C | C | C |
Climacyl heat pump cylinder — 600 mm diameter (Wide)
| Capacity (litres) | 210 | 250 | 300 | 350 | 400 |
|---|---|---|---|---|---|
| Diameter (mm) | 600 | 600 | 600 | 600 | 600 |
| Coil surface area (m²) | 3 | 3 | 3 | 3 | 3 |
| ErP class | C | C | C | C | C |
Climacyl heat pump cylinder — 700 mm diameter (Standard)
| Capacity (litres) | 300 | 400 | 500 |
|---|---|---|---|
| Height (mm) | 1237 | 1650 | 1950 |
| Diameter (mm) | 700 | 700 | 700 |
| Coil surface area (m²) | 3 | 3 | 3 |
| Standing heat loss (W) | 96 | 107 | 115 |
| ErP class | C | C | C |
EcoSlim Twin Coil heat pump & solar cylinder — 475 mm diameter (Slim)
| Capacity (litres) | 150 | 180 | 210 |
|---|---|---|---|
| Height (mm) | 1474 | 1690 | 2003 |
| Diameter (mm) | 475 | 475 | 475 |
| ErP class | C | C | C |
Climacyl Twin Coil heat pump & solar cylinder — 550 mm diameter (Standard)
| Capacity (litres) | 150 | 180 | 210 | 250 | 300 |
|---|---|---|---|---|---|
| Height (mm) | 1154 | 1280 | 1468 | 1718 | 2031 |
| Diameter (mm) | 550 | 550 | 550 | 550 | 550 |
| ErP class | B | C | C | C | C |
Figures are from our current product data; each range’s product information sheet is linked under its table. Connection positions are confirmed on the drawing for each order. Other sizes and configurations are built to order.
Must be installed by a qualified unvented (G3) installer and registered with building control.
Documents
Datasheets & downloads
Datasheets
Climabuff integrated buffer cylinder product information sheetPDF · 684 KB (opens in a new tab)
Climabuff 400L and 500L integrated buffer cylinder product information sheetPDF · 717 KB (opens in a new tab)
Climabuff Slimline integrated buffer cylinder product information sheetPDF · 683 KB (opens in a new tab)
Climacyl Horizontal heat pump cylinder product information sheetPDF · 686 KB (opens in a new tab)
Climacyl Horizontal Twin Coil heat pump cylinder product information sheetPDF · 703 KB (opens in a new tab)
Climacyl heat pump cylinder product information sheetPDF · 723 KB (opens in a new tab)
Climacyl Twin Coil heat pump and solar cylinder product information sheetPDF · 787 KB (opens in a new tab)
Installation & service manuals
ErP labels & data
Certificates
Brochures
Can’t find a document? Search the downloads library, browse all product datasheets and manuals, or email sales@whcylinders.co.uk.
In detail
About Climacyl Heat Pump Cylinder
The Climacyl Heat Pump Cylinder range from World Heat Cylinders is meticulously engineered to deliver maximum efficiency and optimal performance in conjunction with modern heat pump systems. Understanding the unique demands of renewable heating technologies, these cylinders are available in high-quality stainless steel, ensuring longevity and reliability.
Efficient system operation hinges on careful design considerations. Consequently, our Climacyl cylinders feature specifically designed coils with the correct surface area and optimised flow rates. These factors are paramount for effective heat transfer from the heat pump to your stored domestic hot water.
Engineered for Heat Pump Applications
Heat pump systems operate at lower flow temperatures compared to traditional boilers. Therefore, the design of the hot water cylinder is critical. The Climacyl range addresses these specific needs by:
- Maximising Coil Surface Area: Our heat pump cylinders incorporate coils with an exceptionally large surface area. This facilitates superior heat transfer, even with lower temperature inputs from the heat pump.
- Optimising Flow Rates: The internal coil design ensures that water from the heat pump flows effectively through the cylinder, maximising contact time and heat exchange.
- Reducing Heat Loss: High-density, foam-injected zero ozone depletion potential (ODP) insulation minimises standing heat losses, keeping your water hotter for longer and reducing the workload on your heat pump.
- Material Choice: Offering options in highly corrosion-resistant Duplex Stainless Steel for ultimate durability.
With a wealth of experience in both specialist cylinder manufacturing and renewable technology system design, World Heat Cylinders can provide the most efficient solution to meet your specific heat pump system requirements.
Bespoke Options & Multi-Source Integration
We understand that not all heat pump systems are the same. For this reason, bespoke options are available on request for the Climacyl range. This includes, for example, Twin Coil or even Triple Coil cylinders designed for integrating multiple heat sources alongside your heat pump, such as solar thermal systems or a secondary boiler.
Please contact a member of our technical sales support team for further information on custom configurations. Call us on 0161 343 8610 or email sales@whcylinders.co.uk.
Commitment to Quality
Our Climacyl Heat Pump Cylinders are built to last and perform:
- A 25 year guarantee on stainless steel unvented cylinders up to 300 litres reflects the quality of materials and our manufacturing expertise.
- Stainless steel cylinders over 300 litres: 12 months on the vessel, against a material defect or manufacturing fault.
- We use foam injected zero ozone depletion insulation for superior thermal performance and environmental responsibility.
- Constructed from highly corrosion-resistant Duplex Stainless Steel.
- All our cylinders are British Manufactured under a BSI audited ISO9001 quality management system.
Speak to Our Heat Pump Cylinder Specialists
For expert advice on selecting the right Climacyl Heat Pump Cylinder, discussing bespoke requirements, or for any technical queries, please contact our knowledgeable team.
Call us today on 0161 343 8610, email sales@whcylinders.co.uk, or request further information.
Help choosing and specifying
Guides and tools
- Heat pump cylinders: what to look forCoil size, storage temperature and sizing explained
- Heat pump cylinder sizingWhich cylinder to fit for the home and the heat pump
- Pre-plumbed heat pump cylinder selectorThe package to suit your heat pump make and model
- Will it fit? Cylinder space checkerEvery cylinder that fits your cupboard or plant space
- Legionella and safe hot water storageHSE L8 and HSG274 temperatures for stored hot water
Need this tailored to your project or system?
Different connections, coil, size, controls or finish: our design team builds to your requirements.
We also build own-brand ranges for OEM partners.
Need a cylinder built to your specification?
From 10 litres to 10,000 litres, our Manchester team designs, manufactures and tests every vessel in-house. We confirm and respond to every bespoke enquiry within 48 hours, and standard range enquiries immediately. If you need a price on a standard product, don’t hesitate to call and speak to one of our team on 0161 343 8610.We confirm and respond to every bespoke enquiry within 48 hours, and standard range enquiries immediately. If you need a price on a standard product, don’t hesitate to call and speak to one of our team on 0161 343 8610.We confirm and respond to every bespoke enquiry within 48 hours, and standard range enquiries immediately. If you need a price on a standard product, don’t hesitate to call and speak to one of our team on 0161 343 8610.