Glow-Worm Energy7 25S System Boiler

The Glow-Worm Energy7 25S System Boiler is a high efficiency and high-quality gas system boiler designed for reliable heating in homes with a sealed heating system. Built in the UK with an automotive-grade aluminium heat exchanger, this boiler is lightweight and easy to install, featuring a modern, quiet design with a bright LCD display for clear boiler status and settings.

Key Features

• ErP A-rated boiler delivering 25 kW heating output, suitable for medium-sized homes
• Durable automotive-grade aluminium heat exchanger for longevity and reliability
• High efficiency modulating Grundfos pump adjusts to heating demand to lower running costs
• Rear flue option for flexible installation locations
• Bright, easy-to-read LCD display providing clear status and simple control
• Modern, high-impact timeless case design with quiet operation
• Simple water flush cleaning method reduces maintenance costs
• Patented 4-sided cooling design reduces stress on heat exchanger, enhancing durability
• UK-wide spare parts availability ensures straightforward servicing and support

Technical Specifications

Why Buy

The Glow-Worm Energy7 25S system boiler combines advanced engineering with practical features like a modulating pump and automotive-grade aluminium heat exchanger for outstanding energy efficiency and long service life. The clear LCD interface and quiet operation make it user-friendly, while its robust design ensures reliability in a variety of installations.

Suitable For

• Medium-sized homes with sealed heating systems
• Installations requiring flexible rear flue options
• Users seeking a modern, efficient boiler with simple maintenance

Order the Glow-Worm Energy7 25S system boiler for efficient, reliable heating backed by a 7-year warranty and UK support infrastructure.

Please note: Delivery times may vary depending on location, with specific details outlined below.

Standard Delivery

UK Mainland 

• Delivery Time: 2–4 working days
• Free Delivery on most orders
• £4.95 for small items
• £69 for Solar Panels, Batteries and other specialized large items delivery

Express Delivery

UK Mainland

• Delivery Time: 1–3 working days
• Free Delivery
• £4.95 delivery for small items

Channel Islands

• Postcodes Covered: GY*, IM*, JE* 
• Minimum Order: £50
• Delivery Fee: £70

Northern Ireland, Offshore Territories & Scottish Islands 

• Postcodes Covered: BT*, HS*, KW, ZE
• Minimum Order: £50
• Delivery Fee: £35

Same Day Delivery 

• Eligible Postcodes:
  E*, EC*, N*, NW*, SE*, SW*, W*, WC*, HA*, UB*, EN*, IG*, RM*, KT*, SM*, CR*, BR*, DA*, TW*
• Minimum Order: £50
• Same Day Delivery Fee: £60
• Special Requests or Locations:
  For areas outside these postcodes or urgent quotes, please email orders@qualityheating.co.uk and we’ll do our best to accommodate.

Collections

Want to collect your order instead?You’re welcome to do so — just email us at orders@qualityheating.co.uk or message us via WhatsApp with your preferred collection time, and we’ll confirm the details.

Collection address: 284 Water Rd, Unit 9, London, HA0 1HX