Glow Worm Boiler Review
Glow Worm, a British brand under Vaillant Group, provides affordable and efficient boilers with a focus on simplicity and customer satisfaction.
Customer Satisfaction
Average Price
Established
Glow Worm History
Glow-Worm has been producing boilers in the UK since 1934 and is part of the Vaillant Group since 2001.
Glow Worm Technology Innovations
Energy-Saving Mode
Built-in eco function reduces gas usage during low-demand periods.
Glow Worm Pros and Cons
Advantages
UK-Tuned R&D
Tailored for British water hardness and climate.
UK-Focused R&D
Products tailored specifically for British homes and water hardness.
Affordable Pricing
Solid build at an entry-level cost.
Disadvantages
Entry-Level Only
No high-output commercial models.
Entry-Level Only
Fewer high-end options for large properties.
Shorter Warranty
2–3 years vs. 5–10 industry norm.
Frequently Asked Questions
Efficiency Rating
93.2%
Average Efficiency
Warranty
7.0
Average Years Coverage
Market Share
5.8%
UK Boiler Market
Service Network
70
UK Service Centers
Key Features
- Highly rated for customer satisfaction
- Industry-leading reliability scores
- Multiple boiler models to suit different property sizes and requirements
Brand Information
Country of Origin
United Kingdom
Headquarters
Belper, UK
Years in Business
91 years
Popular Glow Worm Boiler Models
| Model | Type | Output | Efficiency | Price | Warranty | Smart Control | |
|---|---|---|---|---|---|---|---|
| Glow Worm Energy 30C | Combi | 30 kW | 93.2% | £950 | 7 years | Details |
Prices shown are for the boiler only. Installation costs typically range from £500 to £1,500 depending on the complexity of your installation.
Product Categories
Combi Boilers
Glow Worm combi boilers are affordable and efficient for UK homes.
Easy to use
compact
quiet operation
Why Choose Glow Worm?
Performance Highlights
- Good energy efficiency at 93.2%
- Solid reliability rating of 4.2/5
- Range of combi boilers with excellent flow rates
- Customer satisfaction rating of 4.2/5
Support & Aftercare
- Extended warranty periods averaging 7.0 years
- 70 dedicated service centers across the UK
- 0 approved installation partners
- UK-based manufacturing and support
Ready to Install a Glow Worm Boiler?
Get competitive quotes from trusted installers in your area
Why get a new Glow Worm boiler?
- Save up to 30% on your heating bills with an efficient new boiler
- Benefit from Glow Worm's 7-year warranty coverage
- All installers are Gas Safe registered for your peace of mind
- Fixed price quotes with no hidden costs