| Adams | MN | Dave | Schmitz | Schmitz Electric | 507-582-3528 |
| Aitkin | MN | Joe | Ferrara | Ferrara Heating & AC | 800-801-5765 |
| | Jim | Miller | Heritage Mechanical Services, Inc. | 800-898-6484 |
| | Rick | Fenner | Northern Air Plumbing & Heating | 218-927-6828 |
| Albert Lea | MN | Kevin | Johnson | Johnson Heating | 507-373-2264 |
| Albertville | MN | Rick | Anderson | DJ's Htg & Clg | 763-497-2661 |
| Alexandria | MN | Mark | Anderson | Ellingson Plumbing, Heating & AC | 320-762-8645 |
| Apple Valley | MN | Brian | Kuhn | Air Masters, Inc. | 952-431-5932 |
| Avon | MN | Brian | Pilarski | Albany Heating AC & Service, Inc | 320-267-3666 |
| Babbitt | MN | Chris | Koivisto | Chris Koivisto Geothermal | 218-827-3597 |
| Backus | MN | Kevin and Craig | Keefe | Keefe Heating, AC & Appl. Repair | 218-947-3210 |
| Bagley | MN | Paul | Neill | Neills Plbg & Htg | 218-694-6545 |
| Barnum | MN | Ralph | Sandberg | Fox Service | 218-389-6030 |
| Barron | WI | Gerry | Winch | Dirk's Htg | 715-537-3990 |
| Baxter | MN | Bob | Willette | Horizon Heating & Services | 218-829-8437 |
| | Kent | Schwen | Mid-American Energy | 218-828-4375 |
| Becker | MN | Matt | Westin | Westin Plbg & Htg Inc | 763-913-8613 |
| Brainerd | MN | Ryan | Czech | All Seasons Htg | 218-839-1035 |
| | Roman | Bednar | Bednar Plumbing & Heating LLC | 218-829-6534 |
| | Sue | Seep | Homeland Geothermal | 218-829-2172 |
| Clearbrook | MN | Randy | Wetenkamp | Clearbrook Electric | 218-776-3995 |
| Cloquet | MN | Ron | Thilmany | All Season's Heating & Cooling | 218-384-3401 |
| | Jim | Allen | Allen & Sons Mechanical | 877-772-5536 |
| | Clint | Jaakola | Fire & Ice Mechanical LLC | 218-879-4757 |
| | Mike | Randall | Randall Bros. Heating & AC | 218-879-4886 |
| Cohasset | MN | Scott | Lewis | Lewis Refrigeration | 218-328-6130 |
| | Jake | Laury | Mr Furnace | 218-328-6145 |
| Cokato | MN | Andrew | Engh | A R Engh Heating & Air Conditioning | 320-286-5899 |
| | Phil | Hataja | Palo Companies | 320-286-6133 |
| Cottage Grove | MN | Brian | Urlaub | Northern Geothermal Corp. | 651-458-8846 |
| Cotton | MN | Herbert | Tuhkanen | Plumbing and Heating | 218-482-3360 |
| Cromwell | MN | Art | Hill | Hill Electric | 218-644-3629 |
| Cross Lake | MN | Julie | Anderson | Crosslake Sheet Metal Inc. | 218-692-2177 |
| Deer River | MN | Mark | Wholrabe | Deer River Plumbing & Heating | 218-246-2294 |
| Detroit Lakes | MN | Rick | Michaelson | Modern Heating | 218-847-7459 |
| Duluth | MN | Josh | Hendrickson | All Service Plumbing & Heating | 218-525-8000 |
| | Cory | Hakes | Blue Water Mechanical | 218-624-1390 |
| | Cory | Hakes | Bluewater Plumbing Heating & AC | 218-624-1390 |
| | Rick | Carlson | Carlson Bros. Mechanical Contracting | 218-723-8351 |
| | Craig | Carlson | Carlson Duluth Company | 218-727-0063 |
| | Mark | Swanson | Cosgriff Sheetmetal | 218-628-0400 |
| | Mark | LaTour | Earth $ense Geo-Systems | 218-721-4494 |
| | Seth | Levanen | Harbor Mechanical Inc | 218-525-7473 |
| | Bob | Johnson | Midway Sheet Metal & Heating | 218-624-9446 |
| | Mark | Sakry | Northern Ground Source Inc. | 218-848-2869 |
| | Todd | Cosgriff | Northland Geothermal | 218-628-0400 |
| | Steve | Koutsoyan | Plaunt Plb & Htg c/o Jamar Co | 218-722-1458 |
| | Jeff | Aili | Summit Mechanical Service | 218-728-9965 |
| Eau Claire | WI | Rick | Kaiser | Certified, Inc. | 715-834-5409 |
| | Joe | Britt | Waterfurnace Int'l | 715-839-9048 |
| Elbow Lake | MN | Brad | Duetchsman | Elbow Lake Plbg & Htg | 218-685-5454 |
| Elk River | MN | Mark | Kennedy | Econar Energy Systems Corp | 763-241-3110 |
| Esko | MN | Paul | Plucinak | ABCO Plumbing & Heating, Inc | 218-878-1317 |
| Eveleth | MN | Pete | Bertuchi | Arrowhead Heating | 218-744-3421 |
| | | | Lanyk Electric | 218-744-5899 |
| Fargo | MN | Bill | Bill Swangler | All Seasons Mech | 701-232-7099 |
| | John | Robinson | Paschke Htg | 701-235-6633 |
| Fergus Falls | MN | John | Ugstad | Ugstads Plbg & Htg | 218-736-4228 |
| Fosston | MN | Don | Dyrdahl | Earthloop of Fosston | 218-435-6379 |
| Frazee | MN | Dennis | Hass | Dennis Hass Repair | 218-538-6698 |
| Freeport | MN | Mike | Stuckel | MS Geo Systems Inc | 320-291-3720 |
| Gilbert | MN | Floyd | Strehlow | Advanced Builders & Excavating, Inc. | 218-865-4217 |
| | Cliff | Mann | Lakeland Electric | 218-865-6043 |
| Glenwood | MN | Richard | Blakeman | R&R Plbg & Htg | 320-634-3608 |
| Grand Rapids | MN | Tom | Anderson | A & A Plumbing and Heating | 218-326-4249 |
| | Scott | Anderson | Anderson Plumbing | 218-326-2433 |
| | David | Kaiser | Kaiser Heating & AC | 218-212-4035 |
| | Tim | Torgerson | Northern Air Plumbing & Heating | 218-327-9361 |
| Ham Lake | MN | Bill | Arzdorf | S&B Geothermal | 763-434-5162 |
| Hankinson | ND | Pat | Falk | Falk Brothers | 701-242-7252 |
| Hayward | WI | Adam | Peoples | People's Htg | 715-766-2212 |
| Hibbing | MN | Sheri | Hendricks | Bob Heicimovich Mech Contracting Inc | 218-262-2969 |
| Hill City | MN | Don | Coatsworth | Coatsworth Construction | 218-697-2544 |
| Hines | WI | Gerald | Sizer | Sizer Well Drilling | 218-835-6522 |
| Hutchinson | MN | Nate | Johnson | Plbg & Htg by Craig | 320-587-7437 |
| International Falls | MN | Rodney | Fletcher | Fletcher Heating & Air | 218-283-2892 |
| | Gerald | Grosjean | Geothermal Solutions | 218-285-6155 |
| | Gene | Wallander | Voyaguer Refrigeration & Ice, Inc. | 218-286-5783 |
| Long Prairie | MN | Ed | Becker | Central Home Comfort Plumbing & Htg | 320-732-4387 |
| | Jerry | Lucas | Long Prairie Plumbing & Heating | 612-732-2815 |
| Longville | MN | Dan | Tharp | Big 'D' Electric | 218-363-2726 |
| | Kim | Johnson | Longville Plumbing & Heating | 218-363-3366 |
| Loyal | WI | Ray | Weyer | Weyer Refrigeration | 218-255-8626 |
| Lutsen | MN | Jim | West | County Plumbing & Heating | 218-663-7537 |
| Mankato | MN | Bruce | Defries | Countryside Refrig | 507-387-2069 |
| Maple Palin | MN | Rick | Nash | Bergerson-Caswell, Inc. | 612-479-3121 |
| Marcell | MN | Denis | Williams | Cozy Air Htg & Plbg Services | 218-832-3246 |
| Marshfield | WI | Matt | Ruchti | House of Heating | 715-384-3163 |
| McGrath | MN | Larry | Bullen | Larry Bullen Construction Co. | 800-862-4353 |
| McGregor | MN | Brian | Nistler | Nistler Plbg & Htg | 218-768-3777 |
| Menomonie | WI | Scott | Sinz | Cedar Falls Htg | 715-235-7166 |
| Mora | MN | Ron | Peterson | Ron's Heating & Refrigeration | 320-679-1534 |
| | Jim | Strandlund | Strandlund Refrigeration | 866-689-2567 |
| Morris | MN | Randy | Thymian | McGinnis Appliance | 320-589-3933 |
| Motley | MN | Bruce | Brotherton | Brotherton Geothermal | 218-839-2140 |
| Mt. Iron | MN | Bill | Neiters | Range Electric | 218-258-2218 |
| Neillsvill | WI | Tim | Voigt | Custom Htg & Clg | 715-743-6109 |
| Nevis | MN | Justin | Issacson | Ike's Heating & Cooling | 218-652-4057 |
| Nisswa | MN | Randy | Hardy | Hardy Plumbing and Heating | 218-828-4194 |
| | Kent | Oakes | Oakes Plumbing & Heating, Inc. | 218-963-4889 |
| Northfield | MN | Kevin | Betterly | Better Air | 507-663-1208 |
| Northhom | MN | Chad | Smischney | Smischney Builders | 218-766-6525 |
| Olgilvie | MN | Steve | Johnson | D & L Heating and Air | 612-490-3614 |
| Owatonna | MN | Mark | Kenney | KSW Heating | 507-451-9710 |
| Park Rapids | MN | Lee | Davis | Davis Electric | 218-732-8304 |
| | Brian | Ellenson | Ellenson Heating & Cooling | 218-252-4775 |
| | Paul | May | May Comfort Zone | 218-732-0145 |
| | Dennis | Kurth | Park Rapids Plumbing & Heating | 218-732-7238 |
| Pequot Lakes | MN | Mike | Scott | Superior Mechanical | 218-568-4709 |
| | Tom | Jones | Tom Jones Plumbing & Heating | 218-821-5813 |
| Perham | MN | Joe | Esser | Esser Plumbing & Heating | 218-346-3530 |
| Pierz | MN | James | Schlichting | Jim's Heating & Air | 320-468-6742 |
| Pillager | MN | Jim | Renner | Jibec | 218-828-0330 |
| Pine River | MN | Steve | Johnson | Plumbing Etc., Inc | 218-587-4965 |
| Plymouth | MN | Brian | Hehn | Westburne Supply, Inc. | 612-551-2800 |
| Reynolds | ND | Kevin | Olson | Mid-Valley Contracting | 701-847-3031 |
| Rice Lake | WI | Boyd | Beranek | Beranek Electric | 715-234-2284 |
| River Falls | WI | Dennis | DeMar | Hi-Tech Service | 715-497-8470 |
| Rochester | MN | Arnie | Lorimor | Haley Comfort Systems | 507-534-2901 |
| Sauk Rapids | MN | Gary | Anderson | St. Cloud Heating | 320-253-0657 |
| Siren | WI | Bruce | Wikstrom | Earth Energy Systems | 715-653-2313 |
| Spring Valley | MN | Phil | Sheldon | Sheldon Plbg & Htg | 507-346-2860 |
| St. Cloud | MN | Jim | Reichle | All Seasons Climate Control | 320-259-6945 |
| | Kevin | Johnson | Mech Energy Systems | 320-253-4859 |
| Staples | MN | Kurt | Wilson | Northwoods Electric | 218-639-4010 |
| Superior | WI | Tom | Barrieau | Barrieau Enterprises | 715-399-2636 |
| | Richard | Kressin | Kastern Heating - York | 715-394-2085 |
| Tower | MN | Norm | Riihiluoma | Riihiluoma Electric | 218-753-6925 |
| Verndale | MN | Duane | Johnson | Johnson Plumbing & Htg. Central Air | 218-639-1657 |
| Wabasha | MN | Dennis | Cullip | Cullip's Watershop | 651-565-2246 |
| Wadena | MN | Greg | Oakland | Oakland Heating & Air Conditioning Inc | 218-371-0103 |
| Walker | MN | Bob | Andrews | Andrews Plumbing & Heating Inc. | 218-547-1017 |
| | Mike | Freeman | Freeman Well Drilling | 218-547-1462 |
| Wanamingo | MN | Randy | Schaefer | Schaefer Htg | 507-824-2111 |
| Willmar | MN | Brice | Bakker | Affordable Air | 320-235-1095 |
| | Barry | Bakker | Chappel Central | 320-235-8982 |
| Willow River | MN | David | Prachar | Willow River Geothermal | 218-372-3892 |
| Wright | MN | Blaine | Schatz | Warm Homes of Wright, Inc | 218-357-2911 |
| Zimmerman | MN | Jason | Massmann | Massmann Geothermal | 763-286-5769 |
