Well-known industry author and instructor Jim Johnson is offering a new video for technicians who want to sharpen their troubleshooting skills. "This HVAC training video program, is available in DVD ...
In "Electrical Fundamentals For HVAC/R Technicians, A Practical Approach To Electrical Troubleshooting & Servicing Comfort Cooling Systems" well-known HVAC industry trainer Jim Johnson takes the ...
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