Glow Worm vs Keston
Average Price
£950
Glow Worm
£1,200
Keston
Energy Efficiency
93.2%
Glow Worm
94.0%
Keston
Warranty
7.0 years
Glow Worm
7.0 years
Keston
Customer Rating
4.2/5
Glow Worm
4.1/5
Keston
Glow Worm vs Keston: Summary
When comparing Glow Worm and Keston boilers, several key differences emerge. Glow Worm, established in 1934, offers boilers with an average efficiency of 93.2% at an average price of £950. Meanwhile, Keston boilers average 94.0% efficiency at £1,200.
Glow Worm boilers come with an average warranty of 7.0 years, compared to Keston's 7.0 years. Customer satisfaction ratings show Glow Worm leading with 4.2/5, while reliability scores give Keston a slight edge.
Both manufacturers offer smart control compatibility and produce boilers suitable for different property types. Both are based in United Kingdom.
Detailed Comparison
Who Should Choose Glow Worm
- Budget-conscious homeowners looking for great value
- Tech-savvy homeowners wanting smart home integration
- Those who prefer to support UK manufacturing
- Homeowners looking for efficient combi boilers
Who Should Choose Keston
- Those looking for a boiler with strong performance
Popular Boiler Models
Glow Worm Popular Models
| Model | Type | Efficiency | Price |
|---|---|---|---|
| Glow Worm Energy 30C | Combi | 93.2% | £950 |
Keston Popular Models
| Model | Type | Efficiency | Price |
|---|---|---|---|
| Keston C30 | Combi | 94.0% | £1200 |
Approved Installers
Glow Worm Installers
No installer data available
Keston Installers
No installer data available
Efficiency & Running Costs
A more efficient boiler can significantly reduce your heating bills. Based on average UK gas prices and a typical 3-bedroom house:
Glow Worm
Average Efficiency
93.2%
Estimated Annual Running Cost
£1,210
Based on average UK gas usage
Potential Annual Savings vs. Old Boiler (80% Efficient)
£170
Keston
Average Efficiency
94.0%
Estimated Annual Running Cost
£1,200
Based on average UK gas usage
Potential Annual Savings vs. Old Boiler (80% Efficient)
£179
Customer Reviews & Testimonials
Glow Worm Owner Reviews
"Glow Worm boilers offer excellent reliability. We've had ours for 3 years with no issues. The efficiency is great and it's quiet in operation."
John D. - Glow Worm Energy 30C Owner
"Installation was straightforward and the smart controls make it easy to manage heating. Customer service is responsive when needed."
Sarah T. - Boiler Owner
Keston Owner Reviews
"Keston boilers offer excellent reliability. We've had ours for 3 years with no issues. The efficiency is great and it's quiet in operation."
John D. - Keston C30 Owner
"Installation was straightforward and the smart controls make it easy to manage heating. Customer service is responsive when needed."
Sarah T. - Boiler Owner
Frequently Asked Questions
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