| 1 |  | RK Air Systems 5 (38) | Barrie | B | 88 |
| 2 |  | Tristar Mechanical North 3.5 (2) | Creemore | B | 87 |
| 3 |  | Central Heating 4.8 (402) | Barrie | B | 84 |
| 4 |  | Ontario HVAC | Meaford | B | 84 |
| 5 |  | Mariposa Building Services 5 (206) | Orillia | B | 81 |
| 6 |  | Ness HVAC & Controls Inc. 5 (25) | Stayner | B | 80 |
| 7 |  | Zeeco Services Ltd 4.6 (143) | Barrie | B | 80 |
| 8 |  | Community Gas & Mechanical Services 4.8 (44) | Wasaga Beach | C | 79 |
| 9 |  | Patten Mechanical 5 (2) | Collingwood | C | 79 |
| 10 |  | Affordable Comfort 5 (1,067) | Collingwood | C | 78 |
| 11 |  | LaFontaine Mechanical 4.9 (136) | Barrie | C | 78 |
| 12 |  | Bird Fuels 4.7 (107) | Owen Sound | C | 77 |
| 13 |  | Daves Duct Cleaning 5 (3) | Meaford | C | 77 |
| 14 |  | Georgian Bay Mechanical 5 (4) | Thornbury | C | 77 |
| 15 |  | B&B ClimateCare 4.7 (39) | Orillia | C | 76 |
| 16 |  | Simcoe Muskoka Home Comfort 4.9 (248) | Barrie | C | 76 |
| 17 |  | Gas Plus Heating, Cooling & Fireplaces 4.1 (99) | Owen Sound | C | 75 |
| 18 |  | Boyce Heating and Air Conditioning 3 (2) | Collingwood | C | 74 |
| 19 |  | Daves Heating & Cooling 5 (4) | Meaford | C | 74 |
| 20 |  | Deller's Heating 4.9 (46) | Wasaga Beach | C | 74 |
| 21 |  | Air Source Home Comfort 5 (279) | Collingwood | C | 73 |
| 22 |  | Andrew's Heating & Air Conditioning 4.6 (67) | Barrie | C | 73 |
| 23 |  | A Plus Heating & Air Conditioning 4.9 (219) | Barrie | C | 72 |
| 24 |  | Shakell Heating & Cooling 4.7 (37) | Orillia | C | 72 |
| 25 |  | Darryl's Heating & Cooling Ltd. 4.8 (83) | Owen Sound | C | 71 |
| 26 |  | MAK Mechanical 4.7 (143) | Barrie | C | 71 |
| 27 |  | My Mechanical HVAC & Water Treatment 5 (45) | Barrie | C | 71 |
| 28 |  | PlumbCore Mechanical 4.9 (35) | Wasaga Beach | C | 71 |
| 29 |  | Scott's R & S Heating Systems 4.7 (53) | Midland | C | 71 |
| 30 |  | Gas Line Resources 4.9 (70) | Wasaga Beach | C | 70 |
| 31 |  | JCG Mechanical 4.7 (14) | Owen Sound | C | 70 |
| 32 |  | Air Solutions Heating & Cooling Inc 4.7 (68) | Barrie | D | 69 |
| 33 |  | Cook's Plumbing, Heating, Air Conditioning, Water Treatment and Electrical 4.2 (112) | Owen Sound | D | 69 |
| 34 |  | Enercare 4.6 (2,169) | Barrie | D | 69 |
| 35 |  | Nottawasaga Mechanical 4.9 (1,054) | Wasaga Beach | D | 69 |
| 36 |  | Shelswell Heating & Air 5 (25) | Orillia | D | 69 |
| 37 |  | Georgian Home Comfort - Heating and Cooling 4.9 (319) | Barrie | D | 68 |
| 38 |  | Barrie Heating & Air Conditioning 4.8 (87) | Barrie | D | 67 |
| 39 |  | Climate Air Heating & Air Conditioning 4.7 (840) | Barrie | D | 67 |
| 40 |  | Crose Mechanical 4.3 (56) | Owen Sound | D | 67 |
| 41 |  | Heritage Heating Contractors Inc 5 (12) | Orillia | D | 67 |
| 42 |  | Aire One Heating & Cooling | Furnace Installation & Repair Barrie, HVAC, Heat Pump & AC Service 4.8 (149) | Barrie | D | 66 |
| 43 |  | Anything Gas Master Mechanical Ltd. | Wasaga Beach | D | 66 |
| 44 |  | Cockburn Refrigeration Limited 4.9 (37) | Orillia | D | 66 |
| 45 |  | Custom Comfort Home Services 4.9 (841) | Barrie | D | 66 |
| 46 |  | Noble 5 (21) | Collingwood | D | 65 |
| 47 |  | Vinny's HVAC 5 (38) | Collingwood | D | 65 |
| 48 |  | Air-Tech Heating & Cooling Solutions 5 (4) | Collingwood | D | 63 |