| Ackerman Plumbing & Heating^* | Park Rapids | (218)732-7836 |
| Advantage Heating & Cooling^* | Backus | (218)947-4480 |
| AJ's Heating & Cooling^ | Laporte | (218)368-5617 |
| Christensen's Heating & Cooling^ | Menahga | (218)255-0165 |
| Denny's Plumbing, Heating and Air Conditioning, LLC | Nevis | (218)652-2016 |
| DMP Heating and Cooling, LLC^* | Menahga | (218)564-5654 |
| Ellenson Heating & Cooling^ | Park Rapids | (218)237-1152/ (218)252-4775 |
| Graham HVAC^ | Solway | (218)556-0597 |
| Hass Geosystems, Inc.^* | Frazee | (218)538-6698 |
| Ikes Heating and Cooling^* | Nevis | (218)652-4057 |
| Keefe Heating, AC & Climate Control^ | Backus | (877)271-0970 |
| Leading Edge Mechanical, Inc.^ | Park Rapids | (218)237-5125 |
| Lindow Plumbing | Nevis | (218)252-1900 |
| Naylor's Heating & Refrigeration^ | Bemidji | (218)444-4328 |
| North County Electrical Services | Benedict | (218)224-2704 |
| North Star Service | Benedict | (218)244-3130/ (888)955-1918 |
| Northern Pines Plumbing & Heating^* | Park Rapids | (218)732-5845 |
| Park Rapids Plumbing and Heating^* | Park Rapids | (218)732-7238 |
| Peterson Sheet Metal | Bemidji | (218)751-4502 |
| R&G Plumbing and Heating^ | Osage | (218)252-1510/ (218)255-0227 |
| Samuelson Laney Plumbing & Heating^* | Park Rapids | (218)237-9276 |
| Service Professionals^ | Wadena | (218)631-2638 |
| True North Mechanical^ | Park Rapids | (218)252-4877 |
| Ulvin Plumbing & Heating^ | Park Rapids | (218)732-0026 |
| Wroolie Refrigeration Heating and Cooling^ | Akeley | (320)493-3214 |
| Hass Geosystems, Inc.^* | Frazee | (218)538-6698 |
| Ikes Heating and Cooling^* | Nevis | (218)652-4065 |
| Keefe Heating, AC & Climate Control^ | Backus | (877)271-0970 |
| Mid Valley | Ottertail | (701)847-3031/ (800)763-5196 |
| North Country Electrical Services | Benedict | (218)224-2704 |
| Peterson Sheet Metal | Bemidji | (218)751-4502 |
| Ulvin Plumbing & Heating^ | Park Rapids | (218)732-0026 |
| ACE Electric | Park Rapids | (218)732-8467 |
| Armory Electric* | Park Rapids | (218)732-0456 |
| Avenson Electric* | Park Rapids | (218)252-9350 |
| Benedict Electric | Benedict | (218)547-1589 |
| Bessler/Wiebolt Electric | Bemidji | |
| Bob's Electric | Menahga | (218)564-4028 |
| Boe Electrical Contractors, Inc. | Park Rapids | (763)241-8922 |
| Brent Electric | Park Rapids | (218)732-5935 |
| Dailey Electric | Sebeka | (218)632-5957 |
| Lee Davis Electric* | Park Rapids | (218)732-8304 |
| Frazee Electric* | Frazee/ Park Rapids | (218)334-2382 |
| Hansen's Electric, Inc.* | Park Rapids | (218)732-3818 |
| Hoffman Electric | Park Rapids | (218)732-8374 |
| Ted Hyduke | Walker | (218)547-3875 |
| Komula Electric | Wadena | (218)430-0015 |
| Kopkie Electric, LLC | Park Rapids | (218)255-3100 |
| Lake Electric, Inc. | Sebeka | (218)849-7666 |
| Les' Electric* | Sebeka | (218)837-5547 |
| Longfors Electric | Detroit Lakes | (218)846-1252 |
| Lowe Electric* | Akeley | (218)547-3929 |
| Marchell Electric* | Park Rapids | (218)732-8862 |
| North Central Electric | Menahga | (218)564-3532 |
| North Country Electrical Services | Benedict | (218)224-2704 |
| Northern Pines Electric | Park Rapids | (218)732-5845 |
| Northern States Electric, Inc. | Akeley | (218)652-4227 |
| Overmyer Electric, LLC | Park Rapids | (218)252-0919 |
| Parks Electric | Park Rapids | (218)255-3532 |
| Steve's Electric* | Park Rapids | (218)732-3340 |
| Terry's Electric* | Menahga | (218)564-4325 |
| Todavich Electric | Bemidji | (218)751-1699 |
| Chuck Trosen* | Walker | (218)675-5757 |
| Zenergy | Sebeka | (218)837-5155 |
^Certified for Air Source Heat Pump rebate program
*Steffes Certified Dealer