About Us E.L.M. Repair & Refrigeration, full-service diesel repair shop in Edgar WI

Diesel Repair
Experts in Edgar, WI

E.L.M. Repair & Refrigeration was started by Evan and Mary Lang in 1996, working out of their home garage. This is where Evan came up with the idea of a mobile air conditioning service, since there was none in the area at the time. In 2002, they purchased a small, 3-bay garage in Edgar and renovated it to begin and grow their business.

In the next few years, the business just took off, and they seemed to be busting at the seams, so in 2006, Evan and Mary added an additional 3 bays to the facility. Now with 6 bays, they are able to accommodate semi-trucks, trailers, farm tractors, combines (less attachments J), other farm equipment off-road equipment, and logging equipment. In the new facility, there’s also a 5 ton overhead crane, which makes it easier to pull out engines for repair.

In 2009, we purchased Mobile Sterli Koni lifts, making it so much easier for our technicians to do full service oil changes, transmission repairs, clutch jobs, and rear end services.

Our repair shop is fully computerized so that our technicians can easily diagnose an engine problem and efficiently and quickly fix that problem. We also have a 24 hour mobile repair, so if you are broken down on the road, we are able to come to you, and get you going in a timely manner. We are listed in the NTTS Breakdown Directory and come highly recommended for fast, efficient service.

We also have diesel performance products on hand if you need more fuel economy and horsepower. Give us a call, and we can guide you in the right direction as to which product would work best for you.

Meet Our Technicians & Staff

Evan Lang, Owner E.L.M. Repair & Refrigeration, full-service diesel repair shop in Edgar WI

Evan Lang, Owner

Before opening E.L.M. Repair & Refrigeration Inc., Evan came to this business with 14 years of experience. Evan graduated from Wyoming Technical Institute in 1990 with a vocational diploma in diesel and heavy equipment technology. In 1996, Evan and his wife began doing auto repairs from their own garage. Throughout the years, Evan was able to purchase his own 3-bay facility, which now has 6 bays and a full staff at hand.

An interesting fact that you may not know about Evan is that he loves to snowmobile and go four wheeling when weather permits, and in his heart he would still love to be in farming.


ASE Master Medium/Heavy Duty Truck Technician certified in:

  • Gas Engines
  • Diesel Engines
  • Drive Trains
  • Brakes
  • Suspension & Steering
  • Electrical/Electronic Systems
  • Heating, Ventilation, and A/C
  • Preventive Maintenance Inspection

ASE Advanced Level Specialist certified in:

  • Electronic Diesel Engine Diagnosis

Other Certifications:

  • Cummins Warranty Decision Maker
  • Cummins N14, M11, ISX, Celect, 88NT, ISB, SIG 600, L10 Engines
  • Cummins L10 Overhaul
  • Cummins 855 Overhaul
  • Cummins B Series and C Series Engines
  • Cummins Celect/STC Overhead Adjustment
  • Cummins ReCon Electrics Troubleshooting
  • Cummins Onan RV Generators
  • Cummins QSK19 Base Engine & Quantum Fuel System
  • Cummins ISC & QSC
  • Cummins Insite
  • Air Conditioning / HVAC
  • Advanced Air Brake Systems
  • Wabco & Bendix ABS
  • Eaton Fuller Clutches
  • GM Powertrain
  • BAB Steering Hydraulics Trouble Shooting & Diagnosis
  • Catco Manual Transmission
  • Allison Automatic Transmission
  • Kenworth HVAC Preventive Maintenance
  • Haldex ABS