fbpx

Updated: November 23, 2024

Glow Worm, a brand under the Vaillant Group, has been a recognized name in British heating for nearly 90 years. Known for its reliable and affordable range, Glow Worm offers various boiler types, including combi, system, and regular boilers. These options make it a popular choice for homeowners with varied heating needs, especially those looking for budget-friendly heating solutions.

In this guide, we’ll explore the range of Glow Worm boilers, their key features, pricing, and comparison with other brands to help you decide if Glow Worm is the right choice for your home.

The Glow Worm Boiler Range

Glow Worm offers three main types of gas boilers, each designed to serve specific household needs:

  1. Combi Boilers
    Combines hot water and central heating in a single, compact unit.
  2. System Boilers
    Works with a hot water storage cylinder to meet high hot water demands.
  3. Regular Boilers
    A traditional system that requires both a cold water storage tank and a hot water cylinder.

Read more: Types of Boilers Explained

Best boiler in London uk

Glow Worm Combi Boilers: Compact and Efficient

Glow Worm combi boilers are known for their efficiency and space-saving design, as they don’t require a hot water storage tank. They deliver hot water on demand, making them ideal for homes with moderate hot water needs. Below are some popular Glow Worm combi models, their output, and estimated pricing.

ModelOutput (kW)WarrantyPriceTotal Cost (incl. Installation)
Energy Combi Gas Boiler18-257 years£775-£915£1,775-£2,215
Betacom4 Combi Boiler21.2-305 years£525-£565£1,725-£1,965
Easicom3 Combi Boiler24-283 years£614-£665£1,814-£2,265
Ultimate3 Combi Boiler30-355-10 years£705-£775£1,805-£2,075

Ideal For: Homes with up to ten radiators or moderate hot water demands.

Glow Worm System Boilers: Meeting High Water Demands

System boilers are suitable for homes with higher hot water requirements and multiple bathrooms. They include a hot water cylinder, allowing them to provide hot water consistently, even in large households.

ModelOutput (kW)WarrantyPriceTotal Cost (incl. Installation)
Energy System Gas Boiler12-307 years£700-£850£1,800-£2,150
Ultimate3 25kW System Boiler255 years£725£1,825-£2,225
Easicom3 25s System Boiler253 years£595£1,995-£2,695

Ideal For: Large homes with multiple bathrooms requiring consistent hot water supply.

Glow Worm Regular Boilers: Traditional Heating for Larger Homes

Regular boilers, also known as open-vent boilers, are a traditional option that works well for larger homes with an existing setup of cold water storage tanks and hot water cylinders. These systems are optimal for high heating demands but require additional components for installation.

ModelOutput (kW)WarrantyPriceTotal Cost (incl. Installation)
Easicom3 Regular Gas Boiler253 years£685£1,985-£2,100
Energy Regular Gas Boiler12-307 years£713-£890£2,113-£2,390
Ultimate3 25kW Regular Boiler255 years£725£2,525-£2,825

Ideal For: Large homes with high heating demands and space for additional system components.

Warranty and Guarantees

Glow Worm offers warranties ranging from 3 to 10 years, depending on the boiler model. Their warranties cover manufacturing defects and include parts and labor when handled by a certified Vaillant engineer. Notably, warranties don’t cover misuse-related issues or those unrelated to manufacturing.

Customer Ratings and Feedback

Glow Worm boilers are rated highly by users, with an average Trustpilot rating of 4.6 out of 5, based on feedback from nearly 7,000 customers as of mid-2024. Customers appreciate the brand’s affordability, reliability, and variety of boiler types suitable for different household needs.

Comparison: Glow Worm vs. Competitors

Key Competitors

  • Ideal Logic Plus: Similar price range, offers up to 10-year warranties.
  • Worcester Bosch: Known for premium quality, extensive warranties, and high-efficiency ratings.

Glow Worm’s Strengths:
While Glow Worm may not lead in innovation, its boilers are competitively priced and efficient, making them suitable for cost-conscious homeowners.

Considerations:
For the best efficiency and longevity, comparing Glow Worm models with higher-ranked brands such as Viessmann or Alpha may provide a broader perspective.

Error Codes and Troubleshooting

Glow Worm boilers are equipped with diagnostic error codes to help troubleshoot common issues. For example, the F28 error code typically indicates ignition issues, while other codes help users understand boiler performance and maintenance needs. Professional servicing is recommended to address these errors effectively.

Unique Features of Glow Worm Boilers

Glow Worm offers an array of features to improve heating efficiency and user control:

Quiet Mark Approval: Glow Worm’s Energy range is Quiet Mark certified, indicating ultra-quiet operation for a peaceful home environment.

Smart Controls: Glow Worm boilers are compatible with smart thermostats like Google Nest and Hive, allowing for precise control over heating schedules and energy usage.

Weather Sensors: Certain models can detect outdoor temperatures to optimize indoor heating, reducing energy consumption.

    Why Does My Boiler Pressure Keep Dropping?

    Glow Worm Servicing and Repairs

    Annual servicing is crucial for efficiency and safety. Glow Worm’s service plans involve a 12-point inspection and fixed-price repairs, ensuring that each unit operates smoothly year-round. While Glow Worm provides affordable repair options, the service warranty applies only to certain models and conditions.

    For out-of-warranty units, Glow Worm offers one-off repair services at fixed prices, including a gas safety check.

    Read about: How Long Should a Boiler Last?

    Final Thoughts: Is a Glow Worm Boiler Right for You?

    Glow Worm boilers offer a reliable and affordable heating solution for UK homeowners, with options suitable for various home sizes and water demands. While they may not have the longest warranties or the latest tech, they serve as a practical choice for those prioritizing cost-effectiveness and straightforward installation. If budget and space-saving features are a priority, Glow Worm boilers are a solid option.

    However, for those seeking top-tier efficiency or advanced features, higher-ranked competitors such as Viessmann or Alpha might be worth considering.