Listing of current combi boilers for Potterton listed in declining SEDBUK rating order.
Potterton: Powermax HE : 150 CP
gas : combi : condensing : floor mounted
Power Rating: (24.0 – 24.0 kW)
SEDBUK efficiency 90.6%
Potterton: Powermax HE : 150 CPIH
gas : combi : condensing : floor mounted
Power Rating: (24.0 – 24.0 kW)
SEDBUK efficiency 90.6%
Potterton: Powermax HE : 115 CPIH
gas : combi : condensing : floor mounted
Power Rating: (24.0 – 24.0 kW)
SEDBUK efficiency 90.5%
Potterton: Powermax HE : 85 CPIH
gas : combi : condensing : floor mounted
Power Rating: (24.0 – 24.0 kW)
SEDBUK efficiency 90.5%
Potterton: Powermax HE : 115 CP
gas : combi : condensing : floor mounted
Power Rating: (24 – 24 kW)
SEDBUK efficiency 90.5%
Potterton: Powermax HE : 85 CP
gas : combi : condensing : floor mounted
Power Rating: (24.0 – 24.0 kW)
SEDBUK efficiency 90.5%
Potterton: Promax HE Store : 150 Litre
gas : combi : condensing : floor mounted
Power Rating: (24.0 – 24.0 kW)
SEDBUK efficiency 90.4%
Potterton: Promax HE Store : 115 Litre
gas : combi : condensing : floor mounted
Power Rating: (24 – 24 kW)
SEDBUK efficiency 90.3%
Potterton: Promax HE Store : 90 Litre
gas : combi : condensing : floor mounted
Power Rating: (24 – 24 kW)
SEDBUK efficiency 90.3%
Potterton: Gold : 28 HE
gas : combi : condensing : wall mounted
Power Rating: (24 – 24 kW)
SEDBUK efficiency 90.1%
Potterton: Promax Combi : 33 HE Plus
gas : combi : condensing : wall mounted
Power Rating: (28 – 28 kW)
SEDBUK efficiency 90.1%
Potterton: Gold : 33 HE
gas : combi : condensing : wall mounted
Power Rating: (28 – 28 kW)
SEDBUK efficiency 90.1%
Potterton: Promax Combi : 28 HE Plus
gas : combi : condensing : wall mounted
Power Rating: (24 – 24 kW)
SEDBUK efficiency 90.1%
Potterton: Gold : 24 HE
gas : combi : condensing : wall mounted
Power Rating: (24 – 24 kW)
SEDBUK efficiency 90.1%
Potterton: Promax Combi : 24 HE Plus
gas : combi : condensing : wall mounted
Power Rating: (20 – 20 kW)
SEDBUK efficiency 90.1%
Potterton: Performa : 30 HE
gas : combi : condensing : wall mounted
Power Rating: (29.6 – 29.6 kW)
SEDBUK efficiency 87.3%
Potterton: Performa : 24i HE
gas : combi : condensing : wall mounted
Power Rating: (24 – 24 kW)
SEDBUK efficiency 87.3%
Potterton: Performa : 24 Eco HE
gas : combi : condensing : wall mounted
Power Rating: (24 – 24 kW)
SEDBUK efficiency 87.3%
Potterton: Performa : 28
gas : combi : non condensing : wall mounted
Power Rating: (29.4 – 29.4 kW)
SEDBUK efficiency 78.1%
This information has been collated from Manufacturers literature and the SEDBUK online database as at April 2007.
Small variations in efficiency ratings are not significant. It can be assumed that a 3% difference in rating will give a 95% confidence that the higher rated boiler is more efficient than the lower.
