And here’s the best part: when you do all of that, your inverter systems will sing. They’ll heat better. Dehumidify better. Run quieter. Use less energy. And your customers will notice the difference.

Final Thoughts

I cannot emphasize this final point enough: Be sure to commission every system. Make that part of your process, not an optional add-on. If you install a high-end inverter system in the winter, plan to come back when cooling season hits and re-test it.

Run through the manufacturer’s test modes. Use every tool at your disposal to confirm charge, airflow, temperatures, and static pressure.

Performance testing isn’t just for show — it protects your installations and builds trust with your customers.

Inverter systems aren’t going anywhere. If anything, they’re becoming the new normal in both residential and light commercial work. But they demand a new level of discipline.

That means no more “good enough.” No more “elbow charging.” No more “ductwork as an afterthought.”

So, take the time. Build your process. Read the manual. Use your scale. Flow your nitrogen. Take those photos. And when you’re not sure, ask for help.

None of us is getting an electrical engineering degree anytime soon, but we can all get better every day. That’s the fun part. That’s why we’re here.

Keep pushing. Keep testing. And as always, measure what matters.

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Bryan Orr is the founder of HVAC School and co-owner of Kalos Services, a high-performance HVAC contracting business in Central Florida. He writes, podcasts, and teaches techs how to do things the right way — even when it’s harder. For more information or if you have questions, you can reach Bryan at ncilink.com/ContactMe.