The AAV as it is also known is fitted to the boiler to automatically remove air from the central heating system and the boiler. They work using a float which opens when air is present and closes when it detects no air This ensures air can’t get into the boiler which could cause airlocks and a variety of other problems to the boiler. The auto air vent is normally located on the pump housing ensuring air is removed from the boiler at this point, the point where the water is being circulated and where air bubbles would occur. The pump circulates water around the boiler and also around the central heating system but if the air was present within the pump, the pump would cease to be effective, the boiler would overheat which would cause the boiler to turn off on an overheat fault. Auto-Air Vents are fitted to every boiler and should be checked regularly to ensure they are in good working order.

Ariston 995865 Aco Auto Air Vent

Part: 995865

Price: £10.25
Ideal 075468 Henrad Auto Air Vent

Part: 075468

Price: £15.95
Potterton 5106932 Automatic Air Vent

Part: 5106932

Price: £13.75
Biasi BI1002111 Prisma Riva Auto Air Vent

Part: BI1002111

Price: £12.50
Vaillant 104521 Auto Air Vent

Part: 104521

Price: £13.00
Main 5130570 Eco Automatic Air Vent

Part: 5130570

Price: £19.95
Baxi 240396 Solo Pfl Auto Air Vent

Part: 240396

Price: £13.50
Potterton Automatic Air Vent 247391

Part: 247391

Price: £8.95
Ravenheat 0008VAL11010/0 Automatic Air Vent

Part: 0008VAL11010/0

Price: £11.55
Main Auto Air Vent 247391

Part: 247391

Price: £8.95
Ferroli 39801160 Optima Auto Air Vent

Part: 39801160

Price: £14.00
Heatline D003202334 Compact Auto Air Vent

Part: D003202334

Price: £33.62
Remeha 720532801 Automatic Air Vent

Part: 720532801

Price: £19.95
Main Pump Airvent 720532801

Part: 720532801

Price: £19.95
Saunier Duval Auto Air Vent 2000800153

Part: 2000800153

Price: £10.25
Ariston 998643 Auto Air Vent

Part: 998643

Price: £12.00
Baxi 5122330 Duo-Tec 40He Auto Air Vent

Part: 5122330

Price: £35.13
Alpha 1.022102 Cd Auto Air Vent

Part: 1.022102

Price: £12.00
Main Air Bleed Valve 10/18728

Part: 10/18728

Price: £7.95
Glowworm Automatic de-aerator S1005600

Part: S1005600

Price: £14.95
Vokera 10025485 Linea, Compact Auto Air Vent

Part: 10025485

Price: £8.95
Glowworm S801186 Auto Air Vent

Part: S801186

Price: £13.75
Chaffoteaux 995865 Auto Air Vent

Part: 995865

Price: £10.46
Chaffoteaux 65104703 Auto Air Vent

Part: 65104703

Price: £21.21
Worcester 87161064990 Greenstar Manual Air Vent

Part: 87161064990

Price: £6.66
Potterton Pump Airvent 720532801

Part: 720532801

Price: £19.95
Main Auto Air Vent 430054

Part: 430054

Price: £8.95
Vaillant 061707 Turbomax Auto Air Vent

Part: 061707

Price: £13.00
Worcester Bosch 87161061420 Junior Auto Air Vent

Part: 87161061420

Price: £10.99
Biasi BI1212107 Automatic Air Vent

Part: BI1212107

Price: £12.75
Alpha 1.010771 240, Cb, Cd Auto Air Vent

Part: 1.010771

Price: £14.00
Saunier Duval S801186 Compact Auto Air Vent

Part: S801186

Price: £13.75
Glowworm 2000801898 Cxi, Sxi Auto Air Vent

Part: 2000801898

Price: £14.95
Saunier Duval Auto Air Vent 2000800685

Part: 2000800685

Price: £10.50
Vokera 10029306 Linea He Unica Auto Air Vent

Part: 10029306

Price: £14.15
Potterton Puma, Ultra Auto Air Vent 10/18728

Part: 10/18728

Price: £7.95
Ideal 172525 Mini Auto Air Vent

Part: 172525

Price: £11.50
Ravenheat 5015015/N Air Purge Valve

Part: 5015015/N

Price: £11.55
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