| Excellent Air & Heating LLC | C-21B | Active |
| Expert Air Conditioning And Heating Inc | C-21B | Active |
| Expert Cooling And Heating LLC | C-21 | Active |
| Express Home Services LLC | C-21 | Active |
| Express Refrigeration LLC | C-21 | Active |
| Extraordinair Mechanical LLC | C-21 | Active |
| Fahrenheit 702 LLC | C-21 | Active |
| Family Air LLC | C-21 | Active |
| Feel The Breeze Heating And Air LLC | C-21 | Active |
| Fire N Ice Heating And Air Conditioning | C-21 | Active |
| First Air Mechanical LLC | C-21 | Active |
| First Class Air LLC | C-21B | Active |
| Fix My A C LLC | C-21B | Active |
| Fluxho LLC | C-21 | Active |
| Force Air Inc | C-21 | Renew by Dec 31, 2026 |
| Forecast Heating Cooling & Refrigeration LLC | C-21 | Active |
| Forward Metal Works Inc | C-21 | Active |
| Foster Cooling & Heating | C-21 | Active |
| Four Brothers Construction Inc | C-21 | Active |
| Foursquare Roofs & Walls Inc | C-21C | Active |
| Freeze And Fire Services HVAC & Refrigeration | C-21 | Active |
| Fresh Air Cooling & Heating LLC | C-21 | Active |
| Fresh General Services LLC | C-21 | Active |
| Frostfire LLC | C-21B | Active |
| Frosty Desert LLC | C-21B | Active |
| Full Spectrum Service LLC | C-21 | Active |
| Fuse Service HVAC & Appliance Repair | C-21B | Active |
| Fuse Stainless LLC | C-21 | Active |
| G M H V A C R & Electrical | C-21 | Active |
| G V M Mechanical LLC | C-21 | Renew by Nov 30, 2026 |
| Gainmore Services LLC | C-21B | Active |
| Gatski Commercial Building & Landscape Maintenance LLC | C-21B | Active |
| Ge Heating And Air | C-21B | Active |
| Gees Air & Appliance Services LLC | C-21B | Renew by Nov 30, 2026 |
| Goettl Air Conditioning & Plumbing | C-21 | Active |
| Gordon Mechanical NV LLC | C-21 | Active |
| Grandview Construction LLC | C-21B | Active |
| GTM Heating & Cooling LLC | C-21B | Active |
| Guardian Angel Air LLC | C-21 | Active |
| Hansen Mechanical Contractors Inc | C-21 | Active |
| Haosen HVAC LLC | C-21 | Active |
| Harris Las Vegas LLC | C-21 | Active |
| Hawthorne Plumbing Heating & Cooling | C-21 | Active |
| Heartfields LLC | C-21 | Renew by Nov 30, 2026 |
| High Temp Air Conditioning Inc | C-21 | Active |
| Hollywood Air LLC | C-21 | Active |
| Home Guard Residential LLC | C-21B | Active |
| Home Repair Professionals | C-21B | Renew by Dec 31, 2026 |
| Hot Air Busters Co | C-21 | Active |
| Hot Cold Air Inc | C-21B | Active |
| Hot Desert Air Conditioning & Heating LLC | C-21 | Active |
| Hot Pursuit Air Conditioning And Heating LLC | C-21 | Active |
| HVAC Amigo | C-21B | Active |
| Ideal Mechanical Inc | C-21 | Active |
| Igloo Heating & Air Conditioning | C-21B | Active |
| Image Electric Inc | C-21 | Active |
| In House Plumbing And HVAC | C-21 | Active |
| Infinity Heating And Cooling | C-21 | Active |
| Innovative Air LLC | C-21 | Active |
| Iron Valley Heating & Cooling LLC | C-21B | Active |
| J & J Heating And Air LLC | C-21B | Active |
| J M A C Plumbing & Air Conditioning LLC | C-21 | Active |
| J P D Heating And Cooling LLC | C-21B | Active |
| J T Temperature LLC | C-21B | Active |
| JD Air And Heating LLC | C-21B | Active |
| Jel Mechanical | C-21 | Active |
| Jet Air Conditioning & Heating LLC | C-21 | Active |
| Joe He Inc | C-21 | Active |
| John Anderson Air Conditioning And Plumbing | C-21B | Active |
| Johnson Controls Inc | C-21 | Active |
| Jones Sheet Metal & Air Conditioning Inc | C-21B | Active |
| Just Maintenance & Repair LLC | C-21B | Active |
| K 2 Mechanical Service LLC | C-21 | Active |
| K O Mechanical Services Inc | C-21 | Renew by Nov 30, 2026 |
| Kamran Metalworks Inc | C-21A | Active |
| Kelso Building Services LLC | C-21B | Active |
| King Cooling & Heating | C-21B | Active |
| Kingly Services | C-21B | Active |
| Komfort Kuest LLC | C-21 | Active |
| Kool Again AC & Heating Company | C-21 | Active |
| L & S Air Conditioning & Heating | C-21 | Active |
| L S K Mechanical LLC | C-21B | Active |
| Lan Air Conditioning & Heating | C-21D | Active |
| Larson Air LLC | C-21 | Active |
| Las Vegas Climate Control Inc | C-21B | Active |
| Las Vegas Facility Service LLC | C-21 | Active |
| Lawyer Mechanical Services Inc | C-21 | Active |
| Lee's Air Plumbing & Heating | C-21B | Active |
| Lees Heating & Cooling | C-21 | Active |
| Legacy Air Heating Cooling Plumbing Electric LLC | C-21B | Active |
| Liberty Heating & Air Conditioning | C-21 | Active |
| Lighthouse Heating And Cooling | C-21B | Active |
| Lios H V A C LLC | C-21B | Active |
| Loyalty Plumbing LLC | C-21B | Active |
| LV Air HVAC LLC | C-21 | Active |
| LV Heating & Cooling LLC | C-21 | Active |
| M & R Heating And Cooling LLC | C-21B | Active |
| M & S Air Conditioning Service Inc | C-21 | Active |
| M A C Tech LLC | C-21B | Active |
| M J Systems & Design Corp | C-21 | Active |