Locate a Dealer

Current Members

Installer

Installer Technician Accredited

Service

Service Technician Accredited

Looper

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 Rd
Schaumburg, IL 60173
Phone: 847-882-2010
Fax: 847-882-2201

Designer/Engineer/Architect


Website: http://www.2010engineering.com
A Polar Bear Air, LLC
1210 Bloods Point Rd
Cherry Valley, IL 61016
Phone: 815-544-5424

Installing Contractor

Installer Service Tech 
Website: http://www.apolarbearair.com
A-Team Heating And Air
120 Easy Street
Suite 14
Carol Stream, IL 60188
Phone: 630-793-5233

Installing Contractor


Website: http://www.ateamheating.com
AA Service Co. Heating & Cooling
550 Anthony Trail
Northbrook, IL 60062
Phone: 847-729-7889

Installing Contractor


Website: http://www.aaserviceco.com
Advanced Geothermal Plumbing & Heating LLC
326 Wilcox Ave
Elgin, IL 60123
Phone: 847-695-1657

Installing Contractor

Looper 
Advanced Temperature Systems
1936 N. 2nd St
Clinton, IA 52732
Phone: 563-243-6100
Phone (alternate): 563-243-4057
Fax: 563-242-3046

Mechanical Contractor


Website: http://www.advancedtemperature.com
Architectural Consulting Engineers
837 Hayes Ave
Oak Park, IL 60302
Phone: 708-524-0272

Designer/Engineer/Architect


Website: http://www.ace-oakpark.com
Area Mechanical
821 1st Ave
Rockford, IL 61104
Phone: 815-964-2070
Fax: 815-964-2071

Mechanical Contractor


Website: http://www.areamechanical.com
Association Of Illinois Electric Cooperatives
6460 S 6th Frontage Rd E
PO Box 3787
Springfield, IL 62708
Phone: 217-529-5561

Coop/Municipal Utility - Lg


Website: http://www.aiec.coop
Bradbury Plumbing, Heating And Air
4150 N. 10,000 W. Rpad
Bonfield, IL 60913
Phone: 8157919272

Installing Contractor

Bradley University
1501 W Bradley Ave.
Peoria, IL 61625
Phone: 3096772780

Educational (non-voting)


Website: http://www.bradley.edu/
Bradley University, Peoria,IL
3408, Horse Creek Rd
Normal, IL 61761
Phone: 3182378135
Phone (alternate): 3182378135

Educational (non-voting)

Bratcher Heating And Air Conditioning
1210 Fort Jesse Rd
Normal, IL 61761
Phone: 309-454-1611
Fax: 309-862-0104

Installing Contractor

Installer Looper Service Tech 
Website: http://www.BratcherComfort.com
Chicagoland Geothermal
312 Van Damin Ave.
Glen Ellyn, IL 60137
Phone: 630-400-9012
Phone (alternate): 630-893-2222

Drilling Contractor/Loop Installer, Installing Contractor


Website: http://www.chicagolandgeothermal.com
College Of DuPage HVACR Program
425 22nd St
Glen Ellyn, IL 60137
Phone: 630-942-3068

Educational (non-voting)

Connor Co
2800 NE Adams St
Peoria, IL 61603
Phone: 309-688-1068
Fax: 309-688-4120

Supplier/Distributor


Website: http://www.connorco.com
Cook County Bureau Of Economic Development
69 West Washington Street, Suite 2900
Suite 2900
Chicago, IL 60602
Phone: 3126030310

Friend of the Industry (non-voting)


Website: http://www.cookcountyil.gov
Corn Belt Energy
One Energy Way
Bloomington, IL 61705
Phone: 309-662-5330

Coop/Municipal Utility - Lg


Website: http://www.cornbeltenergy.com
Crossroads Geothermal Drilling
15500 E State Hwy 33
PO Box 345
Teutopolis, IL 62467
Phone: 217-347-5755
Fax: 217-347-5715

Drilling Contractor/Loop Installer

Looper 
Design Air
1201 N 19th St
Decatur, IL 62521
Phone: 217-429-1105
Fax: 217-475-0419

Installing Contractor


Website: http://www.designairhvac.com
Douglas County Health Department
1250 E US Hwy 36
Tuscola, IL 61953
Phone: 217-253-3421
Fax: 2172533421

Educational (non-voting)

Duden & Silver Inc
103 N Main St
Gifford, IL 61847
Phone: 217-568-7954
Fax: 217-568-7305

Installing Contractor


Website: http://www.dudensukver.com
Durbin Geothermal
PO Box 68
Beecher City, IL 62414
Phone: 618-487-5402
Fax: 618-487-5037

Drilling Contractor/Loop Installer

Looper 
Website: http://www.letsdig.com
Eastern Illini Electric Co-op
330 W Ottawa St
Paxton, IL 60957
Phone: 800-824-5102
Phone (alternate): 217-379-2131
Fax: 217-379-2936

Coop/Municipal Utility - Lg


Website: http://www.eiec.coop
Edelman, Inc.
19440 E 600 N Rd
Fairbury, IL 61739
Phone: 815-692-2700
Phone (alternate): 815-692-4699
Fax: 815-692-4292

Installing Contractor


Website: http://edelmaninc.com
Edelman, Inc.
3302 N. Mattis Ave.
Champaign, IL 61822
Phone: 217-403-9663

Installing Contractor


Website: http://www.edelmaninc.com
Egyptian Electric
1732 Finney Rd.
Murphysboro, IL 62966
Phone: 618-684-2143
Phone (alternate): 618-965-3434
Fax: 618-965-3111

Coop/Municipal Utility - Lg


Website: http://www.eeca.coop
Energy Specialists Co
224 N Main St
Toluca, IL 61369
Phone: 815-452-2332
Fax: 815-452-2496

Installing Contractor


Website: http://www.energy-specialists.com
Enertech Global LLC
2506 W Elm St
Greenville, IL 62246
Phone: 618-664-4010
Fax: 618-664-4597

Manufacturer


Website: http://www.enertechgeo.com
G.O. Loop
W11366 Blanecae Rd.
Randolph, WI 53956
Phone: 920-326-2050
Fax: 920-326-2051

Drilling Contractor/Loop Installer

Design Module 
Website: http://www.goloopwi.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

Installer Service Tech 
Website: http://www.garberheating.com
Geothermal Eco Options, Inc
407 2nd Ave., SW
Cresco, IA 52136
Phone: 563-382-0300
Phone (alternate): 563-547-2871
Fax: 563-382-0305

Drilling Contractor/Loop Installer

Looper 
Website: http://www.geo-inc.com
Geothermal Exchange Organization
1050 Connecxticut Ave., NW, Ste. 1000
Washington, , DC 20036
Phone: 888-255-4436

Friend of the Industry (non-voting)


Website: http://www.geoexchange.org
GVS Contracting
87 Bynum Rd
Ozark, IL 62972
Phone: 618-924-0429
Phone (alternate): 618-551-2852

Drilling Contractor/Loop Installer

Hinrichsen Heating And Air Conditioning
255 N Eureka St
Goodfield, IL 61742
Phone: 309-965-2604

Installing Contractor


Website: http://www.hinrichsenheating.com
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
PO Box 596
Thomasboro, IL 61878
Phone: 217-643-2125
Fax: 217-643-2128

Installing Contractor

Installer Service Tech 
Website: http://www.hoveln.com
Hydronics, Inc.
3871 Sunset Ln.
Northbrook, IL 60062
Phone: 847-942-4542

Installing Contractor

Illinois State University

Normal, IL 61761

Educational (non-voting)

JACK WELLING INC
10929 Franklin Ave STE U
Franklin Park, IL 60131
Phone: 847-258-3277
Phone (alternate): 847-650-1664

Installing Contractor


Website: http://www.jackwellinginc.com
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
Jeckel Plumbing & Heating, LLC
117 E Third St, PO Box 21
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 Rte 20 West, PO Box 390
Elizabeth, IL 61028
Phone: 800-858-5522 ext. 1339
Fax: 815-858-2080

Coop/Municipal Utility - Lg


Website: http://www.jocarroll.com/
KCH Mechanical, Inc
15500 E State Hwy 33
Teutopolis, IL 62467
Phone: 217-347-5755
Fax: 217-347-5715

Installing Contractor

Looper 
McDonald Renewable Energy
413 N Walnut St
Itasca, IL 60143
Phone: 630-780-6928

Installing Contractor

Installer Service Tech 
Website: http://www.mcdonaldrenewableenergy.com
Mechanical Incorporated
2279 East Yellow Creek Road
Freeport, IL 61032
Phone: 815-297-6025
Fax: 815-297-9075

Mechanical Contractor

Service Tech 
Website: http://http:www.mechinc.com
MEP Associates LLC
2720 Arbor Ct.
Eau Claire, WI 54701
Phone: 715-832-5680

Designer/Engineer/Architect


Website: http://www.mepassociates.com
Midwest Geothermal, LLC
4546 Roger B. Chaffee Mem Dr.
Grand Rapids, MI 49548
Phone: 616-514-1101
Fax: 6165141125

Drilling Contractor/Loop Installer


Website: http://www.mwgeothermal.com
Monroe County Electric Cooperative
PO Box 128
Waterloo, IL 62298
Phone: 618-939-7171

Coop/Municipal Utility - Sm (< 5000 meters)


Website: http://www.mcec.org
Plastics Pipe Institute
105 Decker Ct, Suite 825
Irving, TX 75062
Phone: 469-499-1057

Friend of the Industry (non-voting)


Website: http://https://www.plasticpipe.org/
Plumbers And Pipefitters Local 23
4525 Boeing Drive
Rockford, IL 61109
Phone: (815) 397-0350
Fax: (815) 397-0466

Educational (non-voting)


Website: http://www.ualocal23.org
Plumbers And Pipefitters Local 501
1295 Butterfield Rd
Aurora, IL 60502
Phone: 630-692-7316
Phone (alternate): 630-692-7326
Fax: 630-978-9240

Educational (non-voting)


Website: http://www.ualocal501.org/
Plumbers And Pipefitters, Local 23
4525 Boeing Dr.
Rockford, IL 61109
Phone: 8153970350

Educational (non-voting)

Popejoy Inc.
203 S. 10th St.
Fairbury, IL 61739
Phone: 815-692-4471
Fax: 815-692-4553

Installing Contractor


Website: http://www.popejoyinc.com
Pro Air Heating, Cooling, Electrical & Geothermal
106 Oak Creek Plaza
Bloomington, IL 61704
Phone: 309-452-3415
Fax: 309-829-0600

Installing Contractor

Installer Looper Service Tech 
Website: http://www.proairhvac.com
Ridgeway Precision Mechanical Inc
280 W St Charles Rd
Villa Park, IL 60181
Phone: 630-279-4822
Fax: 630-279-4884

Installing Contractor

Installer Service Tech 
Website: http://www.RPMechanical.com
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
Schuster Heating & Pump Co., Inc.
15674 Key City Lane
Peosta, IA 52068
Phone: (563) 582-2148
Fax: (563) 557-5188

Installing Contractor

Installer Service Tech 
Website: http://www.schusterpump.com
Scranton Heating & Cooling
868 975N Ave
Mt Sterling, IL 62353
Phone: 217-773-2626
Phone (alternate): 217-773-2751
Fax: 866-241-5209

Installing Contractor

Installer Service Tech 
Website: http://www.comfortman.com
Shavitz Heating And Air

Skokie, IL 0
Phone: 847-678-1000

Installing Contractor


Website: http://www.shavitz.com
Sheet Metal Workers' Local 265
205 Alexandra Way
Carol Stream, IL 60188
Phone: 630-668-0110
Fax: 630-668-2876

Educational (non-voting)


Website: http://www.smart265.org
Shelby Electric Cooperative
1355 Hwy 128, PO Box 560
Shelbyville, IL 62565
Phone: 217-774-3986
Phone (alternate): 217-774-3986

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 St, Ste 1500
Chicago, IL 60601
Phone: 312-251-1680
Fax: 312-251-1780

Friend of the Industry (non-voting)


Website: http://illinois.sierraclub.org
Snell Plumbing And Heating
617 S Springfield
Virden, IL 62690
Phone: 217-965-3911

Installing Contractor

Looper 
Website: http://www.snellonline.com
Southwestern Electric Cooperative
525 US Rt 40
Greenville, IL 62246
Phone: 800-637-8667

Coop/Municipal Utility - Lg


Website: http://www.sweci.com
Southwestern Illinois College
4950 Maryville Rd
Granite City, IL 62040
Phone: 618-797-7448
Fax: 618-797-1584

Educational (non-voting)


Website: http://www.swic.edu/hvacr/
Steidinger Brothers, Inc.
124 E. Locust Street
Fairbury, IL 61739
Phone: 815-692-2042
Fax: 815-692-4262

Installing Contractor


Website: http://www.steidingerbrothers.com
Sub-Surface Geothermal, Inc.
1201 Carey Dr
McHenry, IL 60050
Phone: 847-815-1958
Phone (alternate): 815-363-0549

Drilling Contractor/Loop Installer

Looper 
Website: http://www.subsurfacegeothermal.com
Synergy Heating & Cooling, Ltd
1272 Turret Dr
Machesney Park, IL 61115
Phone: 815-977-5826

Installing Contractor

Looper 
Website: http://http:/www.synergyhvac.com
T.F Ehrhart
2212 N. 42nd St.
Quincy, IL 62305
Phone: 217-222-9103

Supplier/Distributor


Website: http://www.tferhart.com
TCI Companies Inc.
405 State Route 117
Goodfield, IL 61742
Phone: 309-965-2057
Fax: 309-965-2376

Drilling Contractor/Loop Installer

Looper 
Website: http://www.tcicompaniesinc.com
The Habegger Corporation
2220 W Altorfer Dr
Peoria, IL 61615
Phone: 309-691-4328
Fax: 309-693-2665

Supplier/Distributor


Website: http://www.habeggercorp.com
The Hole Deal, Inc
PO Box 127
Goodfield, IL 61742
Phone: 309-222-5265

Drilling Contractor/Loop Installer

Looper 
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
Town & Country Services
220 La Salle St
Tonica, IL 61370
Phone: 815-442-3415
Phone (alternate): 815-481-1783

Installing Contractor

Installer Service Tech 
Website: http://http:/www.towncountryservices.com
Tri-County Electric
3906 Broadway St.
Mt Vernon, IL 62864
Phone: 618-244-5151
Fax: 6182441496

Coop/Municipal Utility - Lg


Website: http://www.tricountycoop.com
University Of Illinois
1501 S Oak St
Champaign, IL 61820
Phone: 217-333-3227

Educational (non-voting)


Website: http://www.fs.uiuc.edu/planning/deferredmaintenance/
VA-geo (Virginia Geothermal Heat Pump Association)
12210 Fairfax Town Center, Suite 500
Fairfax, VA 22033
Phone: 630.660.4877

Friend of the Industry (non-voting)

Vermeer Midwest
120 E Martin Dr
Goodfield, IL 61742
Phone: 309-467-3716

Supplier/Distributor


Website: http://www.vermeermidwest.com
Wabash Valley Power
722 N High School Rd
PO Box 24700
Indianapolis, IN 46224
Phone: 317-481-2800

Coop/Municipal Utility - Lg

Design Module 
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


Website: http://www.waynewhitecoop.com
Weidner Refrigeration, Inc
14450 Frazee Rd
Divernon, IL 62530
Phone: 217-628-3400

Installing Contractor

Installer Looper Service Tech