Current Members
Installer Technician Accredited
Service Technician Accredited
Loop Installers Accredited
The GAOI offers its members an accreditation program. Click here for additional information on the program.
| 20/10 Engineering Group, LLC | ||
|---|---|---|
| 1216 Tower Road Schaumburg, IL 60173 Phone: 847-882-2010 Fax: 847-882-2201 Designer/Engineer/Architect | Website: http://www.2010engineering.com |
|
| 360 Energy Group, LLC | ||
| 8770 W Bryn Mawr AV STE 1300 Chicago, IL 60631 Phone: (312)265-3971 Phone (alternate): (800)401-0360 Fax: (312)264-0657 Designer/Engineer/Architect | Website: http://www.360eg.com |
|
| AC Systems, Inc. | ||
| 11724 Adie Road Maryland Hts, MO 63043 Phone: 314-569-1000 Fax: 314-569-0532 Supplier/Distributor | Website: http://acsystemsinc.net |
|
| Adams Electric | ||
| P.O. Box 247 Camp Point, IL 62320 Phone: 217-593-7701 Coop/Municipal Utility - Lg | ||
| Advanced Geothermal Plumbing & Heating LLC | ||
| 323 South Commonwealth Avenue Elgin, IL 60123 Phone: 847-695-1657 Fax: 847-628-9511 Installing Contractor | Website: http://www.advancedgeothermal.com |
|
| Architectural Consulting Engineers | ||
| 837 Hayes Avenue Oak Park, IL 60302 Phone: 708-524-0272 Designer/Engineer/Architect | ||
| Area Mechanical | ||
| 821 1st Ave Rockford, IL 61104 Phone: 815-964-2070 Fax: 815-964-2071 Mechanical Contractor | Website: http://www.areamechanical.com |
|
| ARNOLD GEOTHERMAL DRILLING | ||
| 18425 RT 84 N EAST MOLINE, IL 61244 Phone: 3093142299 Drilling Contractor/Loop Installer | ||
| Association Of Illinois Electric Cooperatives | ||
| 6460 South 6th Frontage Road East Box 3787 Springfield, IL 62708 Phone: 217-529-5561 Coop/Municipal Utility - Lg | Website: http://www.aiec.coop |
|
| Blackie's Heating And Cooling | ||
| 1639 Tilton Road Tilton, IL 61833 Phone: 217-442-1440 Fax: 217-442-8456 Installing Contractor | Website: http://blackies.com |
|
| Bratcher Heating And Air Conditioning | ||
| 1210 Fort Jesse Rd. Normal, IL 61761 Phone: 309-454-1611 Fax: 309-862-0104 Installing Contractor | Website: http://www.BratcherComfort.com |
|
| Bratcher Heating And Air Conditioning | ||
| 2802 B Hundman Dr. Champaign, IL 61826 Phone: 217-378-HEAT Installing Contractor | Website: http://www.BratcherComfort.com |
|
| Clinton County Electric Cooperative | ||
| 475 N. Main St. PO Box 40 Breese, IL 62230 Phone: 618-526-7282 Fax: 618-526-4561 Coop/Municipal Utility - Sm (< 5000 meters) | Website: http://www.cceci.com |
|
| CM Engineering, Inc. | ||
| 700 Cherry Street, Suite C Columbia, MO 65201 Phone: 573-874-9455 Fax: 573-874-9474 Designer/Engineer/Architect | Website: http://www.cmeng.com |
|
| Collins Plumbing, Heating & Cooling, Inc. | ||
| 1023 W Dorlan Ave., Suite A Springfield, IL 62702 Phone: 217-793-8031 Mechanical Contractor | ||
| ComEd | ||
| 3 Lincoln Center Oakbrook Terrace, IL 60181 Phone (alternate): 630-437-3386 Investor-Owned Utility | Website: http://www.comed.com |
|
| Connor Co | ||
| 2800 N.E. Adams St. Peoria, IL 61603 Phone: 309-688-1068 Fax: 309-688-4120 Supplier/Distributor | Website: http://www.connorco.com |
|
| CWLP | ||
| 1008 E. Miller St Springfield, IL 62702 Phone: 217-789-2070 Fax: 217-789-2210 Coop/Municipal Utility - Lg | Website: http://www.cwlp.com |
|
| D&C Heating And Cooling | ||
| 603 N. Market Marion, IL 62959 Phone: 618-997-6577 Installing Contractor | Website: http://www.dc-heatingandcooling.com |
|
| Design Air | ||
| 1201 N. 19th Street Decatur, IL 62521 Phone: 217-429-1105 Fax: 217-475-0419 Installing Contractor | Website: http://www.designairhvac.com |
|
| Duden & Silver INC | ||
| 103 North Main St. Gifford, IL 61847 Phone: 217-568-7954 Fax: 2175687305 Installing Contractor | ||
| Durbin Geothermal | ||
| PO Box 68 Beecher City, IL 62414 Phone: 618-487-5402 Fax: 618-487-5037 Drilling Contractor/Loop Installer | Website: http://www.letsdig.com |
|
| Eastern Illini Electric Coop | ||
| 330 W. Ottawa St Paxton, IL 60957 Phone: 800-824-5102 Phone (alternate): 217-379-0446 Fax: 217-379-2936 Coop/Municipal Utility - Lg | Website: http://www.eiec.coop |
|
| Edgar County Public Health Department | ||
| 502 Shaw Ave Paris, IL 61944 Phone: 2174652212 Phone (alternate): 2174652212 Fax: 2174651121 Educational (non-voting) | ||
| Egyptian Electric | ||
| PO Box 38 Steeleville, IL 62288 Phone: 618-684-2143 Phone (alternate): 618-965-3434 Fax: 618-965-3111 Coop/Municipal Utility - Lg | ||
| Electro Electric, Inc | ||
| 904 N Main Flora, IL 62839 Phone: 618-662-4520 Fax: 618-662-8189 Installing Contractor | Website: http://electro electric.com |
|
| Element Energy Consulting | ||
| 108 S. Seminary Ave. Park Ridge, IL 60068 Phone: 312-405-8401 Designer/Engineer/Architect | ||
| Elevate Energy | ||
| 322 S. Green St. Chicago, IL 60607 Phone: 773-328-7013 Associate | Website: http://www.elevateenergy.org |
|
| Enertech Global | ||
| 2506 W. Elm Street Greenville, IL 62246 Phone: 888-436-3783 Fax: 618-664-4597 Manufacturer | ||
| Ernst Heating & Cooling | ||
| 202 West State St. Hamel, IL 62046 Phone: 618-633-2244 Phone (alternate): 618-633-2848 Fax: 618-633-2442 Installing Contractor | Website: http://www.ernstheating.com |
|
| Garber Heating & Air Conditioning | ||
| 310 Detroit Ave. Morton, IL 61550 Phone: 309-696-2862 Phone (alternate): 309-266-9372 Fax: 309-266-0742 Mechanical Contractor | Website: http://www.garberheating.com |
|
| Geothermal Eco Options, Inc. | ||
| PO Box 401. Decorah, IA 52101 Phone: 563-382-0300 Fax: 563-382-0305 Drilling Contractor/Loop Installer | Website: http://www.geo-inc.com |
|
| Great Lakes Geothermal | ||
| 1151 Atlantic Dr., Ste. 4 West Chicago, IL 60185 Phone: 630-231-5685 Drilling Contractor/Loop Installer | Website: http://www.greatlakesgeothermal.com |
|
| GVS Contracting | ||
| 87 Bynum Rd. Ozark, IL 62972 Phone: 618-790-4789 Drilling Contractor/Loop Installer | ||
| Hanson Professional Services | ||
| 1525 S. Sixth St. Springfield, IL 62703 Phone: 217-747-9443 Designer/Engineer/Architect | ||
| Harriss Geothermal Drilling | ||
| 203 Eastlawn Street New Athens, IL 62264 Phone: 618-475-0007 Phone (alternate): cell 618-806-5870 Fax: 618-475-0007 Drilling Contractor/Loop Installer | ||
| Hinrichsen Heating And Air Conditioning | ||
| 255 N. Eureka St. Goodfield, IL 61742 Phone: 309-965-2604 Installing Contractor | ||
| Houston Plumbing Heating Cooling | ||
| 111 N. Market St. Paxton, IL 60957 Phone: 217-379-2329 Fax: 217-379-2166 Installing Contractor | Website: http://www.houstonsplumbing.com |
|
| Hoveln Heating And Cooling, Inc. | ||
| 903 N Church St. Thomasboro, IL 61878 Phone: 217-643-2125 Installing Contractor | Website: http://www.hoveln.com |
|
| Illinois Geothermal Engineering, Inc. | ||
| 1803 Amber Lane Urbana, IL 61802 Phone: 217-344-6154 Phone (alternate): 847-975-1935 Fax: 847-589-8565 Designer/Engineer/Architect | ||
| Illinois Geothermal Supply Company | ||
| 1308 NE Adams St. Peoria, IL 61603 Phone: 1-800-826-2737 Fax: 309-674-1532 Supplier/Distributor | Website: http://www.illinoisgeosupply.com |
|
| Illinois Rural Electric Cooperative | ||
| 2 S. Main Winchester, IL 62694 Phone: 217-742-3128 Coop/Municipal Utility - Lg | ||
| Illinois State University | ||
Normal, IL 61761 Educational (non-voting) | ||
| Imbert International | ||
| 7030 N. Austin Ave. Niles, IL 60714 Phone: 847-588-3170 Supplier/Distributor | Website: http://www.imbertcorp.com |
|
| Information Communication Technician Group Inc. | ||
| 16903 N Crd. 1300 E Arcola, IL 61910 Phone: 2179621882 Drilling Contractor/Loop Installer | Website: http://www.ictgroupinc.com |
|
| Iroquois County Public Health Department | ||
| 1001 East Grant Street Watseka, IL 60970 Phone: 815-432-2483 Fax: 815-432-2198 Friend of the Industry (non-voting) | ||
| J & R Herra, Inc. | ||
| 11944 Ehlers Road. Elburn, IL 60119 Phone: 630-365-6266 Installing Contractor | ||
| Jansen Heating, Air Conditioning & Electrical | ||
| 4341 Rolling Hills Freeport, IL 61032 Phone: 815-262-4373 Phone (alternate): 815-233-6231 Fax: 815-616-8675 Installing Contractor | Website: http://www.jansenhvac.com |
|
| Jansens Heating And Air | ||
| 11984 E US Highway 40 Effingham, IL 62401 Phone: 217-347-5223 Fax: 217-342-3004 Installing Contractor | Website: http://www.jansensheating.com |
|
| JCCI - Jansen Cable Construction Inc. | ||
| 16766 N. US Hwy. 45 Effingham, IL 62401 Phone: 217-347-4141 Installing Contractor | ||
| Jeckel Plumbing & Heating, LLC | ||
| PO Box 21 115 E. Third St Delavan, IL 61734 Phone: 309-244-8265 Phone (alternate): 309-369-2214 Fax: 309-244-7402 Installing Contractor | ||
| Jo-Carroll Energy, Inc. (NFP) | ||
| 793 US Route 20 West P.O. Box 390 Elizabeth, IL 61028 Phone: 800-858-5522 ext. 1339 Fax: 815-858-2080 Coop/Municipal Utility - Lg | Website: http://www.jocarroll.com/ |
|
| Just In Time Heating, A/C & Plumbing | ||
| 115 S Wolfe St PO Box 53 Sandwich, IL 60548 Phone: 815-570-2244 Phone (alternate): 630-553-5302 Fax: 815-570-4180 Installing Contractor | Website: http://www.justintimeheating.com |
|
| Kelly Construction & Design, Ltd. | ||
| 2714 West Harrison Street Chicago, IL 60612 Phone: 773-533-1110 Fax: 773-533-1112 Designer/Engineer/Architect | Website: http://www.kellyconstructiondesign.com |
|
| Kickapoo Drilling Company LLC | ||
| 405 W. Main St. Downs, IL 61736 Phone: 309-378-4003 Phone (alternate): 309-378-4540 Fax: 309-378-4099 Drilling Contractor/Loop Installer | Website: http://www.kickapoodrilling.com |
|
| Kuchefski Heating & A/C, Inc. | ||
| 511 E. Main St. Danville, IL 61832 Phone: 217-442-1454 Fax: 217-442-9345 Installing Contractor | Website: http://www.kuchefskiheating.com |
|
| L & H Services Inc. | ||
| 1140 S. Dixie Hwy. Suite 1 Beecher, IL 60401 Phone: 708-946-2526 Phone (alternate): 888-946-2526 Fax: 708-946-9632 Installing Contractor | Website: http://www.lhserviceshvac.com |
|
| Lemanski Heating & A/c | ||
| 1398 S Armstrong Av Freeport, IL 61032 Phone: 815 232 4519 Fax: 815 235 1444 Installing Contractor | Website: http://Www.lemanskihvac.com |
|
| LITTLE HEATING AND A/C INC | ||
| 197 S WALNUT ST 25 W CHERRY WINCHESTER, IL 62694 Phone: 217-742-3332 Fax: 217-742-8112 Installing Contractor | ||
| MB Heating And Cooling, Inc. | ||
| 1001 E. Miller St. Springfield, IL 62702 Phone: 217-544-4328 Installing Contractor | ||
| McDonough Power Cooperative | ||
| 1210 W. Jackson St. Box 352 Macomb, IL 61455 Phone: 309-833-2101 Coop/Municipal Utility - Lg | Website: http://www.mcdonoughpower.com |
|
| Midwest Energy Efficiency Alliance | ||
| 20 N. Wacker Dr. Chicago, IL 60606 Phone: 3125878390 Friend of the Industry (non-voting) | Website: http://www.mwalliance.org |
|
| Midwest Environmental Products | ||
| 10435 Seymour Ave Franklin Park, IL 60131 Phone: (630) 227-0600 Fax: (630) 227-0533 Associate | Website: http://www.mephvac.com/ |
|
| Monroe County Electric Cooperative | ||
| PO Box 128 Waterloo, IL 62298 Phone: 618-939-7171 Coop/Municipal Utility - Sm (< 5000 meters) | ||
| Mundelein High School | ||
| 1350 West Hawley Street Mundelein, IL 60060 Phone: 8479492200 Phone (alternate): 8474561877 Fax: 8479490599 Educational (non-voting) | Website: http://Www.d120.org |
|
| New Age Technologies Inc. | ||
| 434 North Mill Street Nashville, IL 62263 Phone: 618-314-4969 Phone (alternate): 618-327-8594 Fax: 618-464-0020 Drilling Contractor/Loop Installer, Installing Contractor | ||
| NORESCO | ||
| 2800 S. River Road, Ste. 400 Des Plaines, IL 60018 Phone: 847-375-2050 Phone (alternate): 847-375-2070 Fax: 847-391-9738 Designer/Engineer/Architect | Website: http://www.noresco.com |
|
| Norris Electric Cooperative | ||
| 8543 N. Hwy 130 Newton, IL 62448 Phone: 618-783-8765 Fax: 618-783-3673 Coop/Municipal Utility - Lg | Website: http://www.norriselectric.com |
|
| Optimal Energy LLC | ||
| 2910 North Arlington Heights Road Arlington Heights, IL 60004 Phone: 847-368-8484 Designer/Engineer/Architect | ||
| Peters Heating And Air Conditioning Inc. | ||
| 4520 Broadway Quincy, IL 62305 Phone: 217-222-1368 Phone (alternate): 217-222-1369 Fax: 217-222-1088 Mechanical Contractor | Website: http://http//www.petersheatingandair.com |
|
| Plumbers And Pipefitters Local 501 | ||
| 1295 Butterfield Road Aurora, IL 60502 Phone: 630-692-7316 Phone (alternate): 630-692-7326 Fax: (630) 978-9240 Educational (non-voting) | Website: http://www.ualocal501.org/ |
|
| Popejoy, Inc. | ||
| 203 S. 10th St. Fairbury, IL 61739 Phone: 815-692-4471 Installing Contractor | ||
| Porter Pipe & Supply Co. | ||
| 401 S. Rohlwing Rd. Addison, IL 60101 Phone: 630-543-8145 Fax: 630-543-6830 Supplier/Distributor | Website: http://www.porterpipe.com |
|
| Prairie Power, Inc. | ||
| P.O. Box 610 Jacksonville, IL 62651 Phone: 217-245-6161 Coop/Municipal Utility - Lg | ||
| Pro Air Heating, Cooling, Electrical & Geothermal | ||
| 106 Oak Creek Plaza Bloomington, IL 61704 Phone: 309-452-3415 Fax: 309-829-0600 Installing Contractor | Website: http://www.proairhvac.com |
|
| R & H Plumbing, Heating & Electric | ||
| 123 N Main Altamont, IL 62411 Phone: 618-483-6159 Installing Contractor | ||
| Renew Mechanical | ||
| Box 118 Monee, IL 60449 Phone: 773-257-3639 Installing Contractor | Website: http://www.RenewMechanical.com |
|
| Rightnowar's Service Inc | ||
| 76 County Road 150 North Belle Rive, IL 62801 Drilling Contractor/Loop Installer | ||
| Rural Electric Convenience Cooperative | ||
| 3793 W. State Rt. 104, PO Box 19 Auburn, IL 62615 Phone: 217-438-6197 Coop/Municipal Utility - Sm (< 5000 meters) | Website: http://www.recc.coop |
|
| Sams Well Drilling Inc | ||
| N9935 Pleasant Road Box 150 Randolph, WI 53956 Phone: 920-326-5193 Installing Contractor | ||
| Scranton Heating & Cooling | ||
| RR 3 Box 6A Mt Sterling, IL 62353 Phone: 217-773-2626 Fax: 217-773-2751 Installing Contractor | Website: http://www.comfortman.com |
|
| Shelby Electric Cooperative | ||
| PO Box 560 1355 HWY 128 Shelbyville, IL 62565 Phone: 217-774-3986 Phone (alternate): 2177743986 Coop/Municipal Utility - Lg | Website: http://www.shelbyelectric.coop |
|
| Sierra Club | ||
| RR 2, Box 3A Harrisburg, IL 62045 Phone: 618-477-7882 Friend of the Industry (non-voting) | ||
| Sierra Club, Illinois Chapter | ||
| 70 E. Lake Street, Suite 1500 Chicago, IL 60601 Phone: 312-251-1680 Fax: 312-251-1780 Friend of the Industry (non-voting) | Website: http://illinois.sierraclub.org |
|
| Snell Heating And Cooling | ||
| 617 S. Springfield Virden, IL 62690 Phone: 217-965-3911 Installing Contractor | Website: http://www.snellhvac.com |
|
| Southwestern Illinois College | ||
| 4950 Maryville Road Granite City, IL 62040 Phone: 618-797-7448 Phone (alternate): EXT 5175 Fax: 618-797-1584 Educational (non-voting) | Website: http://www.swic.edu/hvacr/ |
|
| Spoon River Electric Cooperative | ||
| P.O. Box 340 930 South Fifth Avenue Canton, IL 61520 Phone: 309-647-2700 Fax: 309-647-7354 Coop/Municipal Utility - Sm (< 5000 meters) | ||
| Spoon River Mechanical Services | ||
| 405 1/2 E. Linn St. Canton, IL 61520 Phone: 309-647-2700 Fax: 309-647-7354 Installing Contractor | ||
| Stevens HVAC | ||
| 301 S. 7th Quincy, IL 62301 Phone: 217-222-5220 Installing Contractor | ||
| Sub-Surface Geothermal Inc, | ||
| 1201 Carey Dr McHenry, IL 60050 Phone: 8478151958 Phone (alternate): 8153630549 Fax: 8153637713 Drilling Contractor/Loop Installer | Website: http://subsurfacegeothermal.com |
|
| Synergy Heating & Cooling, Ltd. | ||
| 6260 E. Riverside Blvd # 164 311 Lafayatte, Rockford, IL 61107 (Physical Add) Loves Park, IL 61111 Phone: 815-977-5826 Installing Contractor | Website: http://http:/www.synergyhvac.biz |
|
| T & G Plumbing | ||
| 6916 Foss Rd. Monee, IL 60449 Phone: 708-603-0577 Drilling Contractor/Loop Installer | ||
| The Hole Deal, Inc | ||
| P.O. Box 127 Goodfield, IL 61742 Phone: 309-222-5265 Drilling Contractor/Loop Installer | Website: http://www.theholedealinc.com |
|
| Toennies Service Co. | ||
| 219 E. Main St. Damiansville, IL 62215 Phone: 618-248-5130 Fax: 618-248-5812 Installing Contractor | Website: http://www.toenniesservice.com |
|
| Tri County Irrigation And Plumbing | ||
| PO Box 290 Goodfield, IL 61742 Phone: 309-965-2057 Fax: 309-965-2376 Drilling Contractor/Loop Installer | Website: http://www.tricountyirrigation.com |
|
| Tri-County Electric | ||
| PO Box 309 Mt Vernon, IL 62864 Phone: 618-244-5151 Coop/Municipal Utility - Lg | ||
| Trico Mechanical | ||
| 1980 W. US Hwy 30, Suite 11 Sugar Grove, IL 60554 Phone: 630-466-3662 Mechanical Contractor | ||
| Unimin Corporation | ||
| 258 Elm Street New Canaan, CT 6880 Phone: 203-966-8880 Phone (alternate): 203-442-2320 Fax: 203-972-1927 Supplier/Distributor | Website: http://www.unimin.com |
|
| Vermeer Midwest | ||
| 120 E Martin Dr Goodfield, IL 61742 Phone: 309-467-3716 Associate | Website: http://www.vermeermidwest.com |
|
| Wabash Valley Power | ||
| 722 North High School Road Indianapolis, IN 46214 Phone: 3174812800 Coop/Municipal Utility - Lg | Website: http://www.wvpa.com |
|
| WaterFurnace | ||
| 927 Comstock Station Saint Peters, MO 63376 Phone: 877-304-7255 Phone (alternate): 260-442-7246 Fax: 877-799-3965 Manufacturer | Website: http://www.waterfurnace.com |
|
| Wayne-White Counties Electric Cooperative | ||
| 1501 W. Main Fairfield, IL 62837 Phone: 618-842-2196 Coop/Municipal Utility - Lg | ||
| Weidner Refrigeration, INC | ||
| 14450 Frazee Rd. Divernon, IL 62530 Phone: 217-628-3400 Installing Contractor | |
|
| Western Illinois Electrical Coop | ||
| Box 338 Carthage, IL 62321 Phone: 217-353-7312 Coop/Municipal Utility - Sm (< 5000 meters) | ||
| Wm. J. Kraus & Sons, Inc. | ||
| 1012 Main St. Keokuk, IA 52632 Phone: 319-524-3714 Fax: 319-524-3264 Installing Contractor | Website: http://www.krausandsons.com |
|
| Yard Heating And Cooling | ||
| 100 S. Spressor St. Taylorville, IL 62568 Phone: 217-824-4737 Installing Contractor | ||