Boulter Bonus 40/65 vs British / Scottish Gas RD1 3100

Detailed side-by-side comparison of efficiency ratings, specifications, and performance

Boulter Bonus 40/65

Boulter

85.5%

British / Scottish Gas RD1 3100

British / Scottish Gas

78.0%

Efficiency & Performance

85.5%

78.0%

11.7 - 19

29.3 - 29.3

Oil

Gas

Conventional

Technical Specifications

Room-Sealed

Non-Condensing

Fan Assisted

1999 - 2005

2001 - 2004

Cost & Savings

£150-£300

£50-£200

Free (ECO4)

Comparison Summary

Efficiency Winner

Boulter Bonus 40/65

Best Value

Both boilers are available free through the ECO4 scheme

Ready to Get Your Free Boiler?

Both Boulter Bonus 40/65 and British / Scottish Gas RD1 3100 are available free through the ECO4 scheme. Check your eligibility and apply today.