A O Smith UB70 G vs Boulter Bonus 40/65

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

A O Smith UB70 G

A O Smith

89.5%

Boulter Bonus 40/65

Boulter

85.5%

Efficiency & Performance

89.5%

85.5%

60.1 - 60.1

11.7 - 19

Gas

Oil

Conventional

Technical Specifications

Open or Room-Sealed

Room-Sealed

Condensing

Non-Condensing

Fan Assisted

2011 - current

1999 - 2005

Cost & Savings

£150-£300

Free (ECO4)

Comparison Summary

Efficiency Winner

A O Smith UB70 G

Best Value

Both boilers are available free through the ECO4 scheme

Ready to Get Your Free Boiler?

Both A O Smith UB70 G and Boulter Bonus 40/65 are available free through the ECO4 scheme. Check your eligibility and apply today.