| Fits Appliance(s) | | GC No. |
| Baxi 105 HE A Instant | - | 47-075-50 |
| Baxi Duo Tec 24 HE | - | 47-075-23 |
| Baxi Duo Tec 28 HE | - | 47-075-25 |
| Baxi Duo Tec 28 HE A (After Serial No.CAC0929 Issue 9) | - | 47-075-36 |
| Baxi Duo Tec 28 HE A (Before Serial No.CAC0929 Issue 9) | - | 47-075-36 BEFORE |
| Baxi Duo Tec 33 HE | - | 47-075-24 |
| Baxi Duo Tec 33 HE A (After Serial No.BTH1112 Issue 9) | - | 47-075-37 |
| Baxi Duo Tec 33 HE A (Before Serial No.BTH1112 Issue 8) | - | 47-075-37 BEFORE |
| Baxi Combi 28 HE | - | 47-075-21 |
| Baxi Combi 33 HE | - | 47-075-22 |
| Baxi Platinum Combi 24 HE | - | 47-075-27 |
| Baxi Platinum Combi 28 HE | - | 47-075-28 |
| Baxi Platinum Combi 28 HE A (After Serial No. BNC0932 Issue 7) | - | 47-075-32 |
| Baxi Platinum Combi 28 HE A (Before Serial No. BNC0932 Issue 7) | - | 47-075-32 BEFORE |
| Baxi Platinum Combi 33 HE | - | 47-075-29 |
| Baxi Platinum Combi 33 HE A (After Serial No. BNE1112 Issue 5) | - | 47-075-33 |
| Baxi Platinum Combi 33 HE A (Before Serial No. BNE1112 Issue 6) | - | 47-075-33 BEFORE |
| Baxi Platinum Combi 40 HE | - | 47-075-30 |
| Main Combi 25 Eco | - | 47-467-01 |
| Main Combi 30 Eco | - | 47-467-03 |
| Potterton Gold 24 HE Combi | - | 47-590-05 |
| Potterton Gold 28 HE Combi | - | 47-590-06 |
| Potterton Gold 28 HEA Combi (After Serial No BNF0932 & GNK0932) | - | 47-393-19 |
| Potterton Gold 28 HEA Combi (Before Serial No BNF0932 & GNK0932) | - | 47-393-19 BEFORE |
| Potterton Gold 33 HE A Combi (After Serial No GNL1112) | - | 47-393-20 |
| Potterton Gold 33 HE A Combi (Before Serial No GNL1112) | - | 47-393-20 BEFORE |
| Potterton Gold 33 HE Combi | - | 47-590-19 |
| Potterton Promax Combi 24 HE Plus | - | 47-393-17 |
| Potterton Promax Combi 24 HE Plus LPG | - | 47-393-24 |
| Potterton Promax Combi 28 HE Plus | - | 47-590-04 |
| Potterton Promax Combi 28 HE Plus A | - | 47-393-22 |
| Potterton Promax Combi 33 HE Plus | - | 47-590-03 |
| Potterton Promax Combi 33 HE Plus A | - | 47-393-23 |
| Potterton Titanium 28 | - | 47-393-40 |
| Potterton Titanium 33 | - | 47-393-41 |
| Potterton Titanium 28 Combi Erp (Serial No. Ending in AC) | - | 47-393-51 |
| Potterton Titanium 28 Combi Erp (Serial No. Ending in BC & CC) | - | 47-393-51 BC |
| Potterton Titanium 33 Combi Erp (Serial No. Ending in AC) | - | 47-393-52 |
| Potterton Titanium 33 Combi Erp (Serial No. Ending in BC & CC) | - | 47-393-52 BC |
| Potterton Titanium 33 Combi Erp (Serial No. Ending in DC) | - | 47-393-52 DC |