How It Works

Blue and white icon

How Our Training Works

Discover how SkillMill helps people rapidly acquire skills and do their best work.

A laptop, tablet, desktop, and VR headset displaying the Skillmill application

What is SkillMill?

Simply put, it’s the fastest way to a skilled workforce.

SkillMill is the world’s leading on-demand skilled trades platform, delivering a growing catalog of courses, 3D simulations and a comprehensive suite of measurement and engagement tools designed for skilled trades businesses.

What are the Main Benefits of SkillMill?

  • Reduces training costs and ramp-up times.
  • Enables you to rapidly advance the abilities of your entire team — no matter their starting level.
  • Scales easily so you can provide effective upskilling to as many people as possible.
  • Delivers expert-led content on HVAC, Solar, Plumbing, Electrical, Multi-Family and Facilities Maintenance.
  • Helps increase in-the-field performance and customer satisfaction with unlimited practice in a no-fail environment.
  • Gives you the tools to assess your teams’ skills and abilities.
  • Provides analytics and insights into team members’ usage and progress.
  • Frees up your time to focus on employee development so you can retain a top crew of technicians.


What Makes Our Training Different?

We’ve leveraged proven technology, once reserved for training heavily capitalized industries like aviation and military, and brought it to the everyday skilled worker.

Through the use of state-of-the-art 3D simulations, SkillMill creates an immersive platform for users, preparing them for the real world better than anything else on the market.

Interplay Learning is tackling the skills gap head-on, and changing the game in skilled trades training.

Our award-winning training has already helped more than 130,000 industry professionals, and today we’re bringing it to millions more.

Want to see for yourself? Try our free 3D/VR simulation. No registration required.


Key Components of SkillMill

We’ve consulted with trusted subject matter experts and instructional design professionals to develop an effective training platform that applies the science behind how people learn best.

The SkillMill training platform includes short video courses, 3D simulations and knowledge checks — all to help your workforce advance their abilities faster and more efficiently than with traditional training methods.

Video Courses

SkillMill video courses are designed to build foundational knowledge. Our instructional designers know that retention and engagement begins to drop off after a few minutes. For that reason, our video lessons rarely run more than 3-5 minutes long.

Walk-Through Video Guides

Subject matter experts share their knowledge with learners as they’re led step-by-step through a simulation procedure guide. Watching these videos helps people understand exactly what to do and what to expect, once they’re in a simulation.

3D Simulations

Our sim-based training is designed to model real-world field scenarios. Sims help learners practice and perform tasks and procedures so they’re better prepared for real life. We use a learning methodology that starts out slow and then builds up as learners begin to grasp more difficult concepts.

Instruction Mode
You are guided through the diagnostic process from beginning to end with step-by-step instructions so you can never make a mistake. It’s like having an instructor with you in the field, showing you exactly how to perform a procedure.

Practice Mode
There is a randomly generated fault in the system where learners are urged down the path with a procedure guide. Some of the guards have been removed to allow learners to make mistakes while relying on the training that they received in an earlier training sim. We describe this as having an instructor looking over their shoulder, helping them if they get stuck, with a little bit of guidance.

Field Challenge Mode
This is a test and there is no guidance. Learners don’t know what fault they’re working on and they have to employ the diagnostic process that’s been established throughout their training to identify the correct fault. This is where you can really identify the “parts changers” on your team. Switching out parts to see what works will not lead to successful completion of the sim. We describe this as the graded instructor experience; the instructor is there, watching how you do the procedure, but not helping at any point.

Knowledge Checks

Short quizzes follow each lesson. They help users focus, remember key pieces of information and zero in on just a few key takeaways from each module.

Supplemental Learning Materials

These visuals help users further understand complex information like wiring diagrams, equations, example system configs, charts and more.



Learning Paths are expertly curated roadmaps that are created to help your team learn the right skills. They put learners in front of the most relevant courses, in the correct order, to provide the fastest and most complete journey to their training goals.

Ranging from core-based fundamental courses to certification prep, the wide range of Learning Paths help ensure learners are building the most applicable knowledge and skills.



With today’s shortage of skilled workers, it can be costly to pull your team off the road to put them in a training lab or conference room. Your business cannot afford to lose workers when there are already wait times for service calls.

Training with SkillMill does not force you to compromise on where you allocate your resources. Jobs get done and training can be completed whenever there is downtime.

How is this possible?

  • All course content is broken up into small, digestible pieces, allowing technicians the flexibility of learning a little at a time.
  • Since our video lessons typically only run 3-5 minutes long, even 5 minutes is a useful amount of time to continue training.
  • Do your techs have 15 minutes between service calls? That’s more than enough time to watch a video lesson or two, and take a knowledge check quiz.
  • Your workers can download our tablet app and turn their truck into a training lab while they complete 3D simulations.

Whether your workers are between service calls, waiting for their lunch to be delivered, or at home, they can continue to expand their knowledge and skills with the flexibility and mobility of SkillMill.



The platform is compatible with most devices. Check the chart below to see what features are available according to each device.

Knowledge ChecksYesYesYesYes
3D SimulationsYesYesYes
VR SimulationsYesYes



Gamification uses aspects of game-play, such as point scoring, competition and leaderboards, but applies it to something not typically thought of as a game, like skills training.

The Interplay Learning Skills Assessment is a personalized service we offer businesses to assess team skills and abilities. The results give you an objective sense of your workers’ starting point so you can plan a better, more effective training path.

Investing in training is costly, so you want to make sure your team actually uses it. Consider incorporating incentives into your program; they can ensure you see a return on your investment.

Under the “My Organization” tab from your dashboard, there are a number of insights you gain:

No. Training with SkillMill means training can be completed on any device and goes wherever your team goes. Using VR? You only need 10 x 10 ft of space!

Our training can be completed via computer, mobile device, tablet or with a virtual reality headset. Read more about our VR technology recommendations.

You or your team can earn continuing education credits by completing certain courses within the SkillMill platform. Learn more about earning CEUs for NATE.