| A & A MAINTENANCE INC | 4118 N PITTSBURGH AVE CHICAGO, IL | (773) 589-1574 |
| A CUSTOM HEATING & AIR CONDITIONING | CHICAGO, IL | (773) 539-8175 |
| A PROFESSIONAL HEATING & COOLING INC | 6715 S PULASKI RD CHICAGO, IL | (773) 735-2400 |
| A-A MECHANICAL | 1858 N OAKLEY AVE CHICAGO, IL | (773) 782-4314 |
| AA PRO REFRIGERATION & HEATING INC | CHICAGO, IL | (773) 767-2233 |
| AARON HEATING & AIR CONDITIONING REPAIR | CHICAGO, IL | (773) 267-3334 |
| ADAMS AIR-CRAFT | 10918 S WESTERN AVE CHICAGO, IL | (773) 779-7998 |
| AFFORDABLE HEATING & COOLING | 6348 W GUNNISON ST CHICAGO, IL | (773) 594-0131 |
| AIRON INC | 3715 W BELMONT AVE CHICAGO, IL | (773) 723-3321 |
| ALL AMERICAN CONSTRUCTION SERVICE INC | 3041 S MICHIGAN AVE CHICAGO, IL | (312) 326-0662 |
| ALL-TEMP CHICAGOLAND HEATING & AIR CONDITIONING INC | 4363 W MONTROSE AVE CHICAGO, IL | (773) 481-2000 |
| ALWAYS READY REPAIR CO | CHICAGO, IL | (773) 233-7999 |
| AMERICAN COMFORT HEATING & AIR CONDITIONING | 6236 N SAYRE AVE CHICAGO, IL | (773) 631-2350 |
| ANDY'S HEATING & SHEET METAL CO | 6115 W BELMONT AVE CHICAGO, IL | (773) 622-1752 |
| ARROW HEATING SALES & SERVICE | 4523 N ELSTON AVE CHICAGO, IL | (773) 736-6515 |
| BARTLEYS HEATING & AIR CONDITIONING CO INC | CHICAGO, IL | (773) 935-6050 |
| BOBS HEATING & AIR CONDITIONING SERVICE | 5825 N CANFIELD AVE CHICAGO, IL | (773) 631-9160 |
| BURNHAM COOL HEAT INC | CHICAGO, IL | (773) 324-4000 |
| CASCADE HEATING & AIR CONDITIONING CO | MILWAUKEE AND MONTROSE CHICAGO, IL | (773) 283-5040 |
| CHICAGO COOLING CORP | 2328 N ELSTON AVE CHICAGO, IL | (773) 276-5000 |
| CLIMATEMP INC | 315 N MAY ST CHICAGO, IL | (312) 829-3131 |
| COMFORT SERVICES | 405 N WABASH AVE CHICAGO, IL | (312) 755-9603 |
| COOK COUNTY HTG & AIR CONDITIONING | CHICAGO, IL | (773) 646-6633 |
| D & G HEATING & COOLING | 4251 W DIVISION ST CHICAGO, IL | (773) 235-1429 |
| DUNN JAMES HEATING & AIR CONDITIONING | CHICAGO, IL | (773) 342-0558 |
| EISMUELLER & SONS INC | 2659 N NARRAGANSETT AVE CHICAGO, IL | (773) 889-8686 |
| EXCEL MECHANICAL SERVICES | 5231 S CICERO AVE CHICAGO, IL | (773) 581-2721 |
| FOUR SEASONS HEATING & AIR CONDITIONING | 5926 S ARCHER AVE CHICAGO, IL | (847) 966-1300 |
| GARCO ENTERPRISES INC | 1435 W FULTON ST CHICAGO, IL | (312) 666-4447 |
| GUARDIAN HEATING & COOLING SERVICE INC | 3619 N CENTRAL PARK AVE CHICAGO, IL | (773) 583-8855 |
| HEAT WORKS HEATING AND AIR COND INC | 4810 N LAVERGNE AVE CHICAGO, IL | (773) 283-6911 |
| HOMEOWNERS HEATING & AIR | 116 W 95TH ST CHICAGO, IL | (773) 995-6356 |
| J & N BUILDERS INC | 1704 N ARTESIAN AVE CHICAGO, IL | (773) 252-2000 |
| JOBBER REFRIGERATION | 8003 W SUMMERDALE AVE CHICAGO, IL | (708) 457-1144 |
| KNOX HEATING & COOLING | CHICAGO, IL | (773) 239-3959 |
| LOCAL HEATING & COOLING | CHICAGO, IL | (773) 233-9798 |
| METRO MECHANICAL | 5808 N NORTHWEST HWY CHICAGO, IL | (773) 467-1261 |
| MODERN ENERGY SYSTEMS INC | 4110 N KEDZIE AVE CHICAGO, IL | (773) 539-4780 |
| NORM'S HEATING & AIR CONDITIONING INC | CHICAGO, IL | (773) 227-7233 |
| ORNELAS | 600 W TAYLOR ST CHICAGO, IL | (312) 461-4900 |
| POWER FLAME INC | 1035 N THROOP ST CHICAGO, IL | (773) 235-4924 |
| PUSKARZ JOHN HEATING | 4408 N MILWAUKEE AVE CHICAGO, IL | (773) 202-8042 |
| RALPH HEATING | 2710 E 79TH ST CHICAGO, IL | (773) 375-4600 |
| RIVAL HEATING & AIR CONDITIONING | 4418 N MILWAUKEE AVE CHICAGO, IL | (773) 286-2557 |
| SERVICE EXPRESS HEATING & AIR | 6320 N MILWAUKEE AVE CHICAGO, IL | (773) 792-9222 |
| STANDARD CITY AND SUBURBAN HEATING AND AIR CONDITION | 3822 W 79TH ST CHICAGO, IL | (773) 767-0800 |
| SUB CITY HEATING & COOLING | 311 W WASHINGTON ST CHICAGO, IL | (773) 777-9887 |
| THERM-ALL | 5505 N CUMBERLAND AVE CHICAGO, IL | (847) 272-4769 |
| TRUMBULL HEATING & COOLING | 7918 S TRUMBULL AVE CHICAGO, IL | (773) 636-5141 |
| WAGNER CONSTRUCTION CO | 8228 S KEDZIE AVE CHICAGO, IL | (773) 434-8306 |