Baxi 720777601 Automatic Air Vent Valve – Compatible with Ecoblue, Duo Tec & Main Eco Boilers
SKU: AUT-1940-A-N
The Baxi 720777601 Automatic Air Vent Valve helps release trapped air from the heating system, allowing the boiler to maintain proper circulation and operate efficiently.
If air builds up inside the system, it may cause noisy operation, reduced heating performance or circulation problems. Replacing a faulty air vent valve can help restore smooth system operation and dependable boiler performance.
Compatible Boilers
This part is compatible with selected Baxi and Main boiler models.
Baxi 100, 200, 400, 600 & 800 Combi Series
| Title | GC Number |
|---|---|
| 124 Combi | 47-077-25 |
| 128 Combi | 47-077-26 |
| 224 Combi | 47-077-21 |
| 228 Combi | 47-077-22 |
| 424 Combi | 47-077-23 |
| 428 Combi | 47-077-24 |
| 624 Combi | 47-077-28 |
| 630 Combi | 47-077-29 |
| 636 Combi | 47-077-30 |
| 825 Combi | 47-077-38 |
| 830 Combi | 47-077-39 |
| 836 Combi | 47-077-40 |
Baxi 800 System Series
| Title | GC Number |
| 818 System | 41-470-73 |
| 824 System | 41-470-74 |
Baxi Ecoblue & Ecoblue Advance Series
| Title | GC Number |
| Ecoblue 24 Combi | 47-075-81 |
| Ecoblue 28 Combi | 47-075-82 |
| Ecoblue 33 Combi | 47-075-83 |
| Ecoblue Advance Combi 24 | 47-075-87 |
| Ecoblue Advance Combi 28 | 47-075-88 |
| Ecoblue Advance Combi 33 | 47-075-89 |
| Ecoblue Advance Combi 40 | 47-075-90 |
| 18 System Ecoblue ERP | 41-470-25 |
| 24 Combi Ecoblue ERP | 47-077-11 |
| 24 System Ecoblue ERP | 41-470-26 |
| 28 Combi Ecoblue ERP | 47-077-12 |
| 33 Combi Ecoblue ERP | 47-077-13 |
Baxi Advance & Plus Combi ERP
| Title | GC Number |
| Advance Combi 24 ERP | 47-077-14 |
| Advance Combi 28 ERP | 47-077-15 |
| Advance Combi 33 ERP | 47-077-16 |
| Advance Combi 40 ERP | 47-077-17 |
| Plus Combi 24 / 24 ERP | 47-075-84 / 47-077-08 |
| Plus Combi 28 / 28 ERP | 47-075-85 / 47-077-09 |
| Plus Combi 33 / 33 ERP | 47-075-86 / 47-077-10 |
Baxi Duo Tec 2 GA & ErP Series
| Title | GC Number |
| Duo Tec 2 24 GA Range | 47-075-54 |
| Duo Tec 2 28 GA Range | 47-075-55 |
| Duo Tec 2 33 GA Range | 47-075-56 |
| Duo Tec 2 40 GA Range | 47-075-57 |
| Duo Tec 24 Combi ErP (AC/BC/CC/DC) | 47-075-96 (AC–DC) |
| Duo Tec 28 Combi ErP (AC/BC/CC/DC) | 47-075-97 (AC–DC) |
| Duo Tec 33 Combi ErP (AC/BC/CC/DC) | 47-075-99 (AC–DC) |
| Duo Tec 40 Combi ErP (AC/BC/CC/DC) | 47-077-03 (AC–DC) |
Baxi Platinum 2 & Neta-Tec GA Series
| Title | GC Number |
| Platinum 2 Combi 28 GA | 47-075-61 |
| Platinum 2 Combi 33 GA | 47-075-62 |
| Platinum 2 Combi 40 GA | 47-075-63 |
| Neta-Tec 24 / 28 / 33 GA | 47-075-51 / 47-075-52 / 47-075-53 |
| Neta-Tec Plus Combi 24 / 28 / 33 GA | 47-075-64 / 47-075-65 / 47-075-66 |
Baxi Megaflo 2 Compact GA Series
| Title | GC Number |
| Megaflo 2 System 12 Compact GA | 41-075-70 |
| Megaflo 2 System 15 Compact GA | 41-075-71 |
| Megaflo 2 System 18 Compact GA | 41-075-72 |
| Megaflo 2 System 24 Compact GA | 41-075-73 |
| Megaflo 2 System 28 Compact GA | 41-075-74 |
| Megaflo 2 System 32 Compact GA | 41-075-75 |
Baxi System Series – Generic & ErP
| Title | GC Number |
| System 12 / 12 ERP | 47-077-95 / 41-470-23 |
| System 15 / 15 ERP | 47-077-96 / 41-470-24 |
| System 18 | 47-077-97 |
| System 24 | 47-077-98 |
| System 28 / 28 ERP | 47-077-99 / 41-470-27 |
| System 32 / 32 ERP | 41-470-01 / 41-470-28 |
| 15 System ERP (IN AC/BC/CC) | 41-470-18 |
| 18 System ERP (IN AC/BC/CC) | 41-470-19 / 41-470-17 |
| 24 System ERP (IN AC/BC/CC) | 41-470-20 |
| 28 System ERP (IN AC/BC/CC) | 41-470-21 |
| 32 System ERP (IN AC/BC/CC) | 41-470-22 |
Baxi Combi – Generic & ErP
| Title | GC Number |
| 24 Combi | 47-075-67 |
| 28 Combi | 47-075-68 |
| 40 Combi | 47-075-70 |
| Combi 28 Compact | 47-075-72 |
| 24 Combi ERP (CC/DC/EC/IN AC/IN BC) | 47-077-04 |
| 28 Combi ERP (CC/DC/EC/IN AC/IN BC) | 47-077-05 |
| 33 Combi ERP (CC/DC/EC/IN AC/IN BC) | 47-077-06 |
| 40 Combi ERP (CC/DC/EC/IN AC/IN BC) | 47-077-07 |
Main Eco Compact & ErP Series
| Title | GC Number |
| Eco Compact 15 System | 41-467-30 |
| Eco Compact 18 System | 41-467-31 |
| Eco Compact 25 Combi | 47-467-14 |
| Eco Compact 30 Combi | 47-467-15 |
| 24 System ErP (AC/BC/CC/DC) | 41-467-28 |
| 25 Combi ERP (AC/BC/CC) | 47-467-12 |
Why Choose This Product?
This brand-new Baxi air vent valve provides a reliable way to remove trapped air and improve heating system performance. It can help reduce circulation problems and unwanted boiler noise while supporting efficient operation.
Delivery and Return
Place your order before 3:00 PM for same-day dispatch. Standard and next-day delivery options are available.
Returns are accepted within 30 days, provided the part remains unused and in its original packaging.
Always use a qualified engineer for installation.
| SKU | AUT-1940-A-N |
Baxi
Free Delivery
Free UK delivery on orders over £75. Same-day dispatch on orders placed before 4pm on working days.
Returns
We offer a 30-day returns policy. Items must be returned in original condition and packaging. Contact our team to arrange a return.