Find an IRA Registered Contractor
IRA Registered Contractors have met the program's standards of certification, licensing and training. Pick one to guide your project — newly approved contractors appear here automatically.
Displaying 526–550 of 748 contractors · List updated September 29, 2026
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Nash Mechanical LLC HOMESHEAR 5219 W HAMPTON AVE, Milwaukee, WI 53218 · Milwaukee County (414) 640-7001 nashmechanical8@gmail.comHVAC, Water Heater, Heat Pump Water Heater
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Newark Construction LLC HOMES 7601 W SAINT LAWRENCE AVE, Beloit, WI 53511 · Rock County (608) 346-0297 newarkconstructionllc@gmail.com
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Nextech Glass HOMES 2100 PEWAUKEE RD STE D, Waukesha, WI 53188 · Waukesha County (262) 565-3725 rpaustian@nextechglass.com
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Next Energy LLC HEAR 1240 E WASHINGTON AVE, Madison, WI 53703 · Dane County (920) 254-7471 brent@fullspectrumsolar.comHVAC, Solar PV, Heat Pump Water Heater, Heat Pumps, Electrical
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Next Step Energy LLC HOMES PO BOX 1971, Eau Claire, WI 54702 · Eau Claire County (715) 830-9337 zeus@nextstepenergy.comHVAC, Solar PV, Heat Pumps, Electrical, Solar Hot Water
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Nicolet Heating and Cooling, LLC HOMESHEAR 1344 RUSSETT CT, Green Bay, WI 54313 · Brown County (920) 619-2343 office@nicoletheatingandcooling.comHVAC
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Nimmer Heating & A/C HEAR 6530 W FOREST HOME AVE, Milwaukee, WI 53220 · Milwaukee County beth@nimmerheating.comHVAC, Geothermal, Heat Pumps, Solar Hot Water
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North Country Electric Service LLC HEAR 1692 HALLIE RD STE 10, Chippewa Falls, WI 54729 · Chippewa County (715) 861-7138 tpetrie@ncelectricservice.comHVAC, Electrical
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Northland Electrical Solutions Ltd HEAR 23180 MISSIONARY POINT DR, Cable, WI 54821 · Bayfield County (715) 760-0071 cjarosch@mac.comElectrical
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North Wind Renewable Energy Cooperative HEAR 578 ALLEN ST, Amherst, WI 54406 · Portage County (715) 630-6451 josh@northwindre.comSolar PV, Electrical, Solar Hot Water
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Oasis Heating & Air Conditioning LLC HOMES 1351 S 71ST ST, Milwaukee, WI 53214 · Milwaukee County (262) 573-0544 info@oasis-hvac.comHVAC
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Olson Heating Cooling & Appliances LLC HOMESHEAR 214 E LINCOLN, Mount Horeb, WI 53572 · Dane County (608) 437-3666 olsonhca@aol.comHVAC, Geothermal
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Olson Solar Energy LLC HEAR 1447 OAK FOREST DR, Onalaska, WI 54650 · La Crosse County (608) 792-6415 cameron.olson@olsonsolarenergy.comSolar PV, Electrical
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Olson's Rural Electric Inc. HOMESHEAR N2810 CIR DR, Clintonville, WI 54929 · Shawano County (715) 823-6882 dick@olsonsruralelectric.netElectrical
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One Hour Heating and Air Conditioning of Southeastern WI HEAR 13205 GLOBE DR STE 210, Sturtevant, WI 53177 · Racine County (262) 945-1968 dan@onehourwi.comHVAC
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On Site Performance Testing LLC HOMESHEAR 4628 143RD ST, Chippewa Falls, WI 54729 · Chippewa County (715) 579-4788 osptllc@gmail.comHome Energy Assessment, Insulation, New Construction Building Performance Consultant
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Oyen Plumbing and Heating LLC HOMESHEAR 1 MEANS DR, Platteville, WI 53818 · Grant County (608) 331-0238 oyenph@gmail.comHVAC, Heat Pump Water Heater
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Paap Electrical Contracting LLC HEAR W3720 COUNTY ROAD B, Rio, WI 53960 · Columbia County (414) 254-0349 tim@pecsolarcompany.comElectrical
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Paramount Electric LLC HEAR N2225 COUNTY ROAD C, Rio, WI 53960 · Columbia County (608) 393-9562 scott@paramountelectric.comElectrical
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Paul's Heating & Air Conditioning HOMESHEAR 1241 OAK FOREST DR, Onalaska, WI 54650 · La Crosse County (608) 784-0751 mitch@paulsheating.comHVAC, Geothermal, Heat Pumps
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HVAC, Heat Pumps
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Peck & Weis Heating Cooling Plumbing and Electric HEAR 2506 CREST DR, Lake Geneva, WI 53147 · Walworth County (262) 248-6836 ryan@peckandweis.comHVAC, Electrical
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Perfect Temp Heating and Cooling LLC HEAR 6813 ELM AVE, Loves Park, IL 61111 · Winnebago County (815) 980-9646 perfecttempheatingcooling@gmail.comHVAC, Heat Pumps
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Performance Heating & Air HOMESHEAR N5575 COUNTY RD ZZ, Plymouth, WI 53073 · Sheboygan County (920) 889-9901 performanceheat@gmail.comHVAC
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Photovoltaic Systems LLC HEAR 7910 STATE HIGHWAY 54, Amherst, WI 54406 · Portage County 715 824-2069 PVSOLAR@WI-NET.COMSolar PV, Electrical