| Employer | City | |
| Alternative Energy Resources | Various Locations | View Profile |
| AMERI-TEC MECHANICAL | Lancaster | View Profile |
| Apple Comfort Services, Inc. | Dublin | View Profile |
| Atlantic Refrigeration Equipment Co. | Philadelphia | View Profile |
| Berks Mechanical, Inc | Bernville | View Profile |
| Brandywine Realty Trust | Radnor | View Profile |
| C & W Mechanical Inc. | Pottstown | View Profile |
| Carter Goble Lee Company | Various Locations | View Profile |
| Commercial Refrigeration of Harrisburg | Harrisburg | View Profile |
| Construct Corps | Various Locations | View Profile |
| Controlled Environment Technologies | York | View Profile |
| Cool It | Media | View Profile |
| Cunningham Shanor Inc | Butler | View Profile |
| DiFilippo's Service | Paoli | View Profile |
| Direct Energy - US Home Services | Various Locations | View Profile |
| Dual Temp Company | Allentown | View Profile |
| Emcor Group | Various Locations | View Profile |
| First Service Networks | Various Locations | View Profile |
| Flores Air Conditioning Inc | Catasauqua | View Profile |
| GMH Communities | Newtown Square | View Profile |
| Guy M. Cooper Inc. | Willow Grove | View Profile |
| H & H Heating & Air Conditioning, Inc. | Essington | View Profile |
| H & S HVAC Inc. | Bath | View Profile |
| HighTec HVAC | Southhampton | View Profile |
| Honeywell | Various Locations | View Profile |
| Howard Refrigeration & Air Conditioning, Co. | Allentown | View Profile |
| HVAC Services, Inc. | Philadelphia | View Profile |
| Ingersoll Rand Climate Control Technologies | Various Locations | View Profile |
| Integrity Mechanical Inc. | Plumsteadville | View Profile |
| InterCon Automation, Inc. | Harrisburg | View Profile |
| J A Young Co Inc | Broomall | View Profile |
| Johnson Controls Inc, Controls Group | Various Locations | View Profile |
| Landmark Mechanical Service | Allentown | View Profile |
| Liberty Personnel Services, Inc. | King of Prussia | View Profile |
| Madsen Inc | Broomall | View Profile |
| McQuay International/McQuay Service | Various Locations | View Profile |
| Meisner Electric Inc. | Allentown | View Profile |
| MEP Jobs - Customer Fulfillment | Various Locations | View Profile |
| NES Rentals Holdings, Inc | Various Locations | View Profile |
| NORESCO | Various Locations | View Profile |
| One Hour Heating and Air Conditioning | Eighty Four | View Profile |
| Polar Bear Refrigeration & Air Conditioning, Inc. | Wilkes-Barre | View Profile |
| Reidinger's Coal & Fuel Service, Inc. | Middletown | View Profile |
| Service Logic | Various Locations | View Profile |
| Shawmut Design and Construction | Various Locations | View Profile |
| Siemens Building Technologies | Various Locations | View Profile |
| Tescor, Inc. | Warminster | View Profile |
| The Linc Group | Various Locations | View Profile |
| The Tri-M Group, LLC | Kennett Square | View Profile |
| Total Comfort Solutions | Various Locations | View Profile |
| Trane Commercial Systems | Various Locations | View Profile |
| Transwestern | Various Locations | View Profile |
| Tudi Mechanical Systems | McKees Rock | View Profile |
| Tustin Mechanical Services, Inc. | Norristown | View Profile |
| Unique Indoor Comfort | King of Prussia | View Profile |
| URS Corporation | Various Locations | View Profile |
| Werley Heating and Air Conditioning Co | Allentown | View Profile |
| Wesley Wood | West Chester | View Profile |