Keston vs Vaillant
Average Price
£1,200
Keston
£1,450
Vaillant
Energy Efficiency
94.0%
Keston
94.7%
Vaillant
Warranty
7.0 years
Keston
9.8 years
Vaillant
Customer Rating
4.1/5
Keston
4.5/5
Vaillant
Keston vs Vaillant: Summary
When comparing Keston and Vaillant boilers, several key differences emerge. Keston, established in 1928, offers boilers with an average efficiency of 94.0% at an average price of £1,200. Meanwhile, Vaillant boilers average 94.7% efficiency at £1,450.
Keston boilers come with an average warranty of 7.0 years, compared to Vaillant's 9.8 years. Customer satisfaction ratings show Vaillant ahead at 4.5/5, while reliability scores give Vaillant a slight edge.
Both manufacturers offer smart control compatibility and produce boilers suitable for different property types. Keston is based in United Kingdom, while Vaillant originates from Germany.
Detailed Comparison
Who Should Choose Keston
- 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 Vaillant
- Those wanting longer warranty coverage for peace of mind
- Homeowners valuing customer satisfaction and after-sales support
- Those planning to stay in their home long-term
- Homeowners wanting access to a wide network of approved installers
- Those looking for a boiler with exceptional reliability
Popular Boiler Models
Keston Popular Models
| Model | Type | Efficiency | Price |
|---|---|---|---|
| Keston C30 | Combi | 94.0% | £1200 |
Vaillant Popular Models
| Model | Type | Efficiency | Price |
|---|---|---|---|
| ecoFIT pure | Combi | 93.0% | £950 |
| ecoTEC pro | Combi | 93.0% | £1,100 |
| ecoTEC plus | Combi | 94.0% | £1,300 |
| ecoTEC Plus LPG | Combi | 94.0% | £1,350 |
| ecoTEC exclusive | System | 97.0% | £1,800 |
Approved Installers
Keston Installers
No installer data available
Vaillant Installers
BOXT
Premium Partner
E.ON
Advanced Installer
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:
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
Vaillant
Average Efficiency
94.7%
Estimated Annual Running Cost
£1,191
Based on average UK gas usage
Potential Annual Savings vs. Old Boiler (80% Efficient)
£186
Customer Reviews & Testimonials
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
Vaillant Owner Reviews
"Vaillant 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. - ecoFIT pure Owner
"Installation was straightforward and the smart controls make it easy to manage heating. Customer service is responsive when needed."
Sarah T. - ecoTEC pro Owner
Frequently Asked Questions
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