The following solar air heating systems have had their test performance verified by SAHWIA as per the Solar A Mark criteria.
| Solar A Mark # | Company | Solar Air Heater |
| 1001 | Conserval Engineering Inc. / Conserval Systems Inc. | SolarWall |
| 1002 | Conserval Engineering Inc. / Conserval Systems Inc. | SolarWall 2-Stage |
| 1003 | CA Group | SolarWall |
| 1004 | SolarWall Europe Sarl. | SolarWall |
| 1005 | SolarWall Europe Sarl. | SolarWall 2-Stage |
| 1006 | Your Solar Home | SolarSheat |
| 1007 | Conserval Engineering Inc. / Conserval Systems Inc. | SolarWall PV/T |