The Glowworm Energy is an ErP A-rated system boiler designed to suit a wide variety of property types. Its compact size and rear flue option provide flexibility, allowing it to be the perfect solution for most installation situations.

This boiler is engineered for efficiency to help reduce your energy bills. It features ultra-quiet operation and is Quiet Mark approved (excluding 15kW and 30kW models), ensuring it won't disturb your home environment.

• ErP A-rated - delivers high efficiency to help lower energy bills
• Compact design - fits into tight spaces with a rear flue option for flexibility
• Quiet Mark approved - ensures ultra-quiet operation (12kW, 18kW, 25kW models)
• Wide output range - caters to different heat demands and system requirements
• Available in a choice of outputs - including 12kW, 15kW, 18kW, 25kW, and 30kW

• This product should only be installed by a Gas Safe registered engineer.

• Unfortunately due to the nature of the products and for safety reasons, we cannot accept returns on unwanted boilers (your statutory rights are not affected). Please see the website for more details.

This item will be delivered directly by our supplier. Lead times are shown on the product and trolley pages and are always advertised in working days (Monday to Friday).

• If your order contains items stocked by us and items that come direct from the supplier, your order will be automatically split and processed accordingly.
• We will pass the details you give us, including delivery details, your email address and your phone number, to the relevant supplier.
• Most of our suppliers can deliver to any UK address. Delivery to remote or offshore postcodes may take a little longer than the advertised lead time. If the supplier cannot deliver to your postcode or we believe your order may take longer, we will try to tell you beforehand.
• Items that come direct from a supplier will be delivered by the courier chosen by the supplier. Where possible, suppliers will update you with delivery information. This may be by email, phone call or text message.
• Items delivered direct from suppliers cannot be returned through a store. You would need to return these items direct to the supplier, unused and in their original packaging, at your expense. You can arrange for most items to be collected by contacting our Customer Services team. A fee of £9* will be taken off your refund. There is no charge for faulty items being collected. *For big and bulky items, additional charges may apply.
• Please note, you cannot return bespoke or made-to-measure items unless they are faulty.