Glowworm Energy System Boiler 18kW

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

Delivery may take a little longer over the bank holiday period. Check our Early May bank holiday delivery times for details.

 

DELIVERY OPTIONS (UK mainland only)

 

Next Day Delivery – £5.00 or FREE for orders over £40

• Order before 9pm Monday to Thursday for next business day delivery
• Order Friday to Sunday before 5pm for Monday delivery
• Orders placed after Sunday at 5pm will be delivered the following Tuesday

 

Pre-12pm Delivery – £10.00 to arrive before 12pm on the scheduled days above

Saturday Delivery – £10.00 or £5.00 for orders over £40 & FREE for orders over £75 (order by 6pm Friday)

Sunday Delivery – £10.00 or £5.00 for orders over £40 & FREE for orders over £75 (order by 4pm Saturday)
Times may vary for items being delivered directly from the supplier. For more information, please visit our delivery information page below.

Items over 30kg can only be delivered from Monday to Friday. If ordered before 6pm, please allow up to two business days for delivery. Orders placed after 6pm Thursday will be delivered after the weekend.

 

Supplier Delivery - Lead times for products delivered directly by our suppliers are shown on the product pages, and are always advertised in working days (Monday to Friday).

 

More about delivery

Store opening hours may differ over the bank holiday period. Check our Early May bank holiday opening hours for details.

 

Our standard opening times are 7am-8pm Monday-Friday, 7am-6pm Saturday and 9-4pm Sunday. Please check your local store is open on the store locator page, before you visit.

 

Once you have placed your order online, we’ll have it ready for you at the store you have selected in as little as 5 minutes. We will hold your order for 14 days, after which we will automatically generate a refund to the payment type you used to place the order.

 

Don’t forget your mobile number – Make sure your mobile number is added so that we can text you when your order is ready to collect. Please wait for your text or email before coming to collect your items.

 

If an item is eligible for Next Business Day Collection in store, the order must be placed by 9pm Monday to Thursday for collection the next day. Orders placed after 9pm on Thursday, and up to 5pm on Sunday, will be available for collection on Monday. For larger items over 30kg, please allow two business days.