| A |
| A.C. Hall Airconditioning | 27 Rosalie Street, Springvale | | | |
| AC HALL Airconditioningnot edited since 2017 | 195 Springvale Road, Springvale | | | |
| Airify | 2 Arrow Court, Pakenham | | | |
| Airmac Air Conditioning | Montmorency, no street on record | | | |
| Airmaster Fire | 159 Newlands Road, Coburg North | airmaster.com.au | | |
| Airpower heating and cooling | 12 Govan Street, Seaford | | | |
| Australian air-conditioning distributors | 9 - 11 Turbo Drive, Bayswater North | | | |
| Australian Climate Systemsnot edited since 2020 | Croydon North, no street on record | austclimate.com.au | | |
| B |
| B.M.D. Heating and Cooling | 85 Ingram Road, Gruyere | | | |
| C |
| Coldflow Heating & Coolingnot edited since 2017 | Springvale, no street on record | | | |
| Comfort Heating and Cooling | 675 Whitehorse Road, Mont Albert | | | |
| Contract Aircon and Electrical | 2 Kirkham Road West, Keysborough | | | |
| Coop | 33 Corporate Boulevard, Bayswater North | | | |
| D |
| Dale Air | 292A Boundary Road, Moorabbin Airport | | | |
| Dynamic Heating and Cooling | Fitzgerald Road, Moonee Ponds | dynamicservices.com.au | | |
| E |
| Ellis Air | 2 Chifley Drive, Moorabbin Airport | | | |
| F |
| Frazer Air | Thomastown, no street on record | | | |
| H |
| HNS Fume & Dust Control | Thomastown, no street on record | | | |
| Hunt Commercial | 11 Fiveways Boulevarde, Springvale South | huntcommercial.com.au | | |
| Hunt Heating | 11 Fiveways Boulevarde, Springvale South | huntheat.com.au | | |
| Hydronic Heating | Montmorency, no street on record | | | |
| I |
| I Heat and Cool | 33 Southeast Boulevard, Pakenham | | | |
| M |
| McKinnon heating and cooling | 2 Nellbern Road, Moorabbin | | | |
| P |
| Polyaire Airconditioning Products | 9 - 15 Arkwright Drive, Keysborough | | | |
| R |
| Rapid cold air conditioningnot edited since 2020 | 478 Whitehorse Road, Mitcham | | | |
| Resi Air | 95 Tulip Street, Black Rock | | | |
| RKH Air Conditioning Services | Montmorency, no street on record | | | |
| T |
| Thomas Air Conditioning | 1-3 Bricker Street, Cheltenham | thomair.com.au | | |
| Top Notch Air Conditioning | 75 Clifton Grove, Carrum Downs | | | |
| Total Care Heating & Cooling | Rosebud, no street on record | | | |
| Tri-Tech Refrigeration | 51 Commercial Drive, Bundoora | | | |