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Ethical brand ratings and accreditation since 2001

Boilers: Ethical Comparison Ratings Table

Glow-Worm

86
No Accreditation

Vaillant

86
No Accreditation

Ariston

82
No Accreditation

Grant

82
No Accreditation

Ideal

77
No Accreditation

Keston

77
No Accreditation

Alpha

73
No Accreditation

Baxi

73
No Accreditation

Biasi

73
No Accreditation

Heatrae Sadia

73
No Accreditation

Johnson & Starley

73
No Accreditation

Main

73
No Accreditation

Ravenheat

73
No Accreditation

Sime

73
No Accreditation

Intergas

68
No Accreditation

Ferroli

64
No Accreditation

Viessmann

59
No Accreditation

Vokera

59
No Accreditation

Worcester Bosch

55
No Accreditation