Cool Energy 150L / 25L - Combined Cylinder / Buffer in White
Cool Energy 150L / 25L - Combined Cylinder / Buffer in White

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  • IN THE BOX

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✔ 150L cylinder, integrated 25L buffer

✔ Dedicated coil, efficient heat transfer

✔ Buffer volume, reduced short cycling

✔ 3kW immersion, backup heating support

✔ Heat pump ready, optimised efficiency

 

The Cool Energy 150 L / 25 L Combined Cylinder / Buffer CE-25150LCOMBI is an elegantly integrated combination unit that brings together a 150 litre unvented hot water cylinder with a 25 litre buffer tank and an efficient heat pump coil, engineered to support smooth heat pump operation and consistent delivery of hot water. Supplied with a G3 unvented kit and a 3 kW immersion heater for reliable backup, this cylinder and buffer solution helps maintain stable water temperature and reduces heat pump cycling, supporting long-term comfort and system efficiency. Backed by an extensive 25-year warranty, it offers enduring performance and peace of mind for refined residential or light commercial installations.

✔ 1 x Cool Energy 150L / 25L - Combined Cylinder / Buffer

✔ 1 x G3 unvented kit

25-Year Manufacturer Warranty: Cool Energy Heat Pump Cylinders come backed by a 25-year manufacturer warranty, reflecting the brand's commitment to quality and long-lasting craftsmanship. Should a qualifying manufacturing defect arise during normal, everyday use, the manufacturer will arrange for the product to be repaired or replaced, giving you confidence in your purchase for years to come. Please note that this warranty covers manufacturing defects only — it does not extend to cosmetic wear and tear, misuse, accidental damage, incorrect installation, or inadequate maintenance. Valid proof of purchase will be required when making a warranty claim. This warranty is offered in addition to, and does not affect, your statutory rights under the Consumer Rights Act 2015. For any warranty-related queries, please contact us at hello@icecoldspice.com

UK Delivery Once dispatched, we'll send you tracking information so you can follow your order every step of the way. Your order will be delivered to the nearest accessible point at your property boundary — drivers are unable to bring items inside. As this is a heavy item, please have two people available on delivery day. We strongly recommend not booking installers or making any arrangements that depend on a specific delivery date until your order has arrived safely. Estimated delivery date and any associated delivery costs for this product are indicated above the checkout button on this product page. If you would like to clarify this before making your purchase, please give us a call on 020 3740 1246.

Change of mind returns You have 14 days from delivery to notify us of a return by emailing customercare@icecoldspice.com. To process your return, please provide together in one email your order number, whether the return is change of mind, faulty or damaged, clear photos showing the item’s condition and original packaging, and confirmation that the item has not been used or had installation attempted. You then have a further 14 days to return the item. Goods should be returned in their original condition and packaging. Returned items will be inspected and, where an item has been used, installed, damaged or handled beyond what is reasonably necessary, resulting in a reduction in value or resaleability, we reserve the right to make an appropriate deduction from the refund to reflect that loss in value, up to the full purchase price. Any refund due will be issued within 14 days. Rejected deliveries or failed delivery attempts may be treated as change-of-mind returns. Return postage for change-of-mind returns is at your own cost.

Bespoke, made-to-order, and pre-order items These cannot be returned for any reason, unless faulty or not as described. Faulty or incorrect items Please inspect the packaging and item carefully on delivery and report any visible damage before signing for the goods with the driver. We recommend refusing the package if there are visible damages and making this reason clear to the driver. Contact us as soon as possible — and ideally within 48 hours — by emailing customercare@icecoldspice.com with your order number, photos of the item, and a description of the issue. All faulty items are assessed in conjunction with the manufacturer, whose findings will inform the resolution offered.

Faulty or incorrect items Please inspect the packaging and item carefully on delivery and report any visible damage before signing for the goods with the driver. We recommend refusing the package if there are visible damages and making this reason clear to the driver. Contact us as soon as possible — and ideally within 48 hours — by emailing customercare@icecoldspice.com with your order number, photos of the item, and a description of the issue. All faulty items are assessed in conjunction with the manufacturer, whose findings will inform the resolution offered.

For our complete returns policy please click here.

Your statutory rights are not affected.

Are you a trade professional or business customer? Unlock BIG trade benefits including a hidden discount on this product.

✓ Your own private trade discount code, valid for one year
✓ Preferential volume and repeat order rates
✓ Dedicated 1-to-1 WhatsApp support
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→ Click Here to Unlock Your Free Trade Membership

Cool Energy 150L / 25L - Combined Cylinder / Buffer

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£2,600.95
£2,700.95 
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  • FEATURES

  • IN THE BOX

  • WARRANTY

  • DELIVERY & RETURNS

  • 🔓 UNLOCK TRADE PRICE

✔ 150L Cylinder with Integrated 25L Buffer — Combines domestic hot water storage and buffer capacity within a single unit, simplifying system layout and reducing installation complexity. This integrated approach optimises hydraulic efficiency while minimising footprint.

✔ Dedicated Heat Pump Coil — Engineered to support efficient energy exchange between the heat pump circuit and stored water. Enhances overall system performance through improved heat transfer rates and recovery efficiency.

✔ Buffer-Assisted Operation — The integrated buffer volume stabilises system flow and temperature, reducing heat pump short cycling. This promotes smoother operation, improved efficiency, and extended equipment lifespan.

✔ Unvented Cylinder Configuration — Designed to deliver stored hot water at consistent mains pressure across multiple outlets. Ensures stable flow rates and reliable end-user performance.

✔ 3kW Immersion Heater — Incorporates a 3kW electric immersion heater to provide supplemental or backup heating. Maintains hot water availability during peak demand or system downtime.

✔ Heat Pump Compatible Design — Specifically configured for seamless operation with modern heat pump systems. Supports low-temperature performance while maximising overall energy efficiency.

✔ 1 x Cool Energy 150L / 25L - Combined Cylinder / Buffer

✔ 1 x G3 unvented kit

25-Year Manufacturer Warranty: Cool Energy Heat Pump Cylinders come backed by a 25-year manufacturer warranty, reflecting the brand's commitment to quality and long-lasting craftsmanship. Should a qualifying manufacturing defect arise during normal, everyday use, the manufacturer will arrange for the product to be repaired or replaced, giving you confidence in your purchase for years to come. Please note that this warranty covers manufacturing defects only — it does not extend to cosmetic wear and tear, misuse, accidental damage, incorrect installation, or inadequate maintenance. Valid proof of purchase will be required when making a warranty claim. This warranty is offered in addition to, and does not affect, your statutory rights under the Consumer Rights Act 2015. For any warranty-related queries, please contact us at hello@icecoldspice.com

UK Delivery Once dispatched, we'll send you tracking information so you can follow your order every step of the way. Your order will be delivered to the nearest accessible point at your property boundary — drivers are unable to bring items inside. As this is a heavy item, please have two people available on delivery day. We strongly recommend not booking installers or making any arrangements that depend on a specific delivery date until your order has arrived safely. Estimated delivery date and any associated delivery costs for this product are indicated above the checkout button on this product page. If you would like to clarify this before making your purchase, please give us a call on 020 3740 1246.

Change of mind returns You have 14 days from delivery to notify us of a return by emailing customercare@icecoldspice.com. To process your return, please provide together in one email your order number, whether the return is change of mind, faulty or damaged, clear photos showing the item’s condition and original packaging, and confirmation that the item has not been used or had installation attempted. You then have a further 14 days to return the item. Goods should be returned in their original condition and packaging. Returned items will be inspected and, where an item has been used, installed, damaged or handled beyond what is reasonably necessary, resulting in a reduction in value or resaleability, we reserve the right to make an appropriate deduction from the refund to reflect that loss in value, up to the full purchase price. Any refund due will be issued within 14 days. Rejected deliveries or failed delivery attempts may be treated as change-of-mind returns. Return postage for change-of-mind returns is at your own cost.

Bespoke, made-to-order, and pre-order items These cannot be returned for any reason, unless faulty or not as described. Faulty or incorrect items Please inspect the packaging and item carefully on delivery and report any visible damage before signing for the goods with the driver. We recommend refusing the package if there are visible damages and making this reason clear to the driver. Contact us as soon as possible — and ideally within 48 hours — by emailing customercare@icecoldspice.com with your order number, photos of the item, and a description of the issue. All faulty items are assessed in conjunction with the manufacturer, whose findings will inform the resolution offered.

Faulty or incorrect items Please inspect the packaging and item carefully on delivery and report any visible damage before signing for the goods with the driver. We recommend refusing the package if there are visible damages and making this reason clear to the driver. Contact us as soon as possible — and ideally within 48 hours — by emailing customercare@icecoldspice.com with your order number, photos of the item, and a description of the issue. All faulty items are assessed in conjunction with the manufacturer, whose findings will inform the resolution offered.

For our complete returns policy please click here.

Your statutory rights are not affected.

Are you a trade professional or business customer? Unlock BIG trade benefits including a hidden discount on this product.

✓ Your own private trade discount code, valid for one year
✓ Preferential volume and repeat order rates
✓ Dedicated 1-to-1 WhatsApp support
✓ Bespoke product customisation
✓ Specialist product sourcing

→ Click Here to Unlock Your Free Trade Membership

Additional Information

Download Product Data Sheet

What Is a Heat Pump Hot Water Cylinder?

A heat pump hot water cylinder is a specially designed hot water storage tank that works efficiently with low-temperature heat sources such as air source heat pumps. It stores hot water for taps, showers, and baths while maximising system efficiency.

Is This Cylinder Suitable for Use With an Air Source Heat Pump?

Yes. This cylinder is specifically designed for use with air source heat pumps and features a high-surface-area coil that allows efficient heat transfer at lower flow temperatures compared to standard cylinders.

What Size Heat Pump Cylinder Do I Need for My Property?

The correct size depends on the number of occupants, bathrooms, and your hot water usage. As a general guide: 

 

1–2 people: 150–180 litres 

3–4 people: 200–250 litres

5+ people or multiple bathrooms: 300 litres+ 

 

Your installer can confirm the ideal size during system design.

How Is a Heat Pump Cylinder Different From a Standard Hot Water Cylinder?

Heat pump cylinders have larger internal coils for low-temperature heating, improved insulation to reduce heat loss, and faster recovery when paired with heat pumps. Standard cylinders are typically designed for higher-temperature boiler systems and are less efficient with heat pumps.

Can This Cylinder Be Installed in an Existing Property?

Yes. Heat pump cylinders can be installed in both new builds and retrofit projects. Space, pipework, and water pressure will need to be assessed by a qualified installer before installation.

Does This Cylinder Provide Mains Pressure Hot Water?

Yes. This is an unvented hot water cylinder, meaning it delivers hot water at mains pressure for strong shower performance and fast bath filling, without the need for a cold water storage tank.

How Long Does It Take to Heat the Water?

Heat-up times vary depending on cylinder size, heat pump output, and incoming water temperature. Typically, full reheat times range from 1.5 to 3 hours, with hot water available continuously throughout the day.

How Much Space Does the System Need?

Heat pump cylinders are similar in footprint to standard cylinders but are often taller. Adequate clearance is required for installation, servicing, and safety components. Exact dimensions can be found in the product data sheet.

Are Cool Energy Heat Pump Cylinders Eligible for Government Grant Schemes?

Yes. When installed as part of an MCS-certified heat pump system, heat pump cylinders are typically eligible under UK government schemes such as the Boiler Upgrade Scheme (BUS), subject to installer assessment and system compliance.

Delivery & Returns

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We regularly check to ensure these are clear, fair, and in-line with the industry.

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Fast & Free Delivery

Complimentary standard delivery to all UK mainland addresses. No minimum spend.

Finance Options

Securely pay with all major credit cards, or pay in 3 with PayPal.