Also referred to as a pressure differential switch, it is designed to act as a safety instrument which checks if the fan is running correctly, the air pressure switch connects to the Fan via heat resistant tubes which go directly onto the fan Venturies. Through these, it enables the boiler to detect when the fan is running to ensure that if the fan fails there would not be a build-up of toxic fumes with no way of venting them, A signal would then be sent to the printed circuit board telling the boiler to stop sending gas to the burner and preventing the boiler from turning on.

Main Air Pressure Switch 5105867

Part: 5105867

Price: £63.36
Baxi 5111609 Solo 3 60PF Air Pressure Switch

Part: 5111609

Price: £28.46
Baxi 5137529 Combi Air Pressure Switch

Part: 5137529

Price: £32.98
Main Air Pressure Switch 642236

Part: 642236

Price: £55.74
Potterton Pressure Switch 248466

Part: 248466

Price: £14.23
Potterton Pressure Switch Kit 246055

Part: 246055

Price: £39.99
Main Air Pressure Switch 5105574

Part: 5105574

Price: £43.09
Saunier Duval Air pressure switch 0020053614

Part: 0020053614

Price: £46.43
Potterton Air Pressure Switch 5110393

Part: 5110393

Price: £24.84
Baxi Pressure Switch 5111414

Part: 5111414

Price: £139.21
Baxi 226060 Air Pressure Switch

Part: 226060

Price: £36.75
Glowworm Air Pressure Switch 0020064058

Part: 0020064058

Price: £39.31
Saunier Duval Air Pressure Switch 0020053616

Part: 0020053616

Price: £46.43
Main Air Pressure Switch 5112195

Part: 5112195

Price: £24.84
Chaffoteaux 61313932 Air Pressure Switch

Part: 61313932

Price: £53.81
Ideal 172589 Mini Air Pressure Switch

Part: 172589

Price: £83.24
Potterton Ultra Air Pressure Switch 642223

Part: 642223

Price: £56.57
Potterton Pressure Switch 5111414

Part: 5111414

Price: £139.21
Main Air Pressure Switch 5112197

Part: 5112197

Price: £24.84
Main Air Pressure Switch 5105796

Part: 5105796

Price: £43.08
Potterton 5111408 Control Unit

Part: 5111408

Price: £461.42
Chaffoteaux 998484-01 Air Pressure Switch

Part: 998484-01

Price: £36.34
Alpha 1.8396 Air Pressure Switch

Part: 1.8396

Price: £45.00
Ariston 60081054 Air Pressure Switch

Part: 60081054

Price: £161.60
Main Air Pressure Switch 248466

Part: 248466

Price: £14.30
Ideal 173236 Mini He Air Pressure Switch

Part: 173236

Price: £78.96
Baxi 246055 Solo 3 Pfl Air Pressure Switch

Part: 246055

Price: £39.99
Main Air Pressure Switch 5137532

Part: 5137532

Price: £32.93
Chaffoteaux 571651-01 Air Pressure Switch

Part: 571651-01

Price: £46.57
Page 1 of 4