March 2, 20170Comments

Nitrogen Purging and Brazing

Most HVAC installation instructions require flowing nitrogen through the copper tube during brazing. This is an important step in producing a quality HVAC system and nitrogen purging and brazing. Why nitrogen

by Ron Walker

Free HVAC Training

July 29, 20160Comments

Current Relays Commercial Refrigeration

On start-up, the amp draw of the compressor is near LRA before the rotor starts to turn. The high current in the power leg going from M, through R, to the

by Ron Walker

Free HVAC Training

July 27, 20160Comments

Motor Starters – Video

A motor starter is basically a contactor with overloads. The overloads in the starter are selected according to both the voltage and the RLA of the compressor. These protectors respond

by Ron Walker

HVAC Training Articles

July 26, 20160Comments

3 Phase Voltage Unbalance

by Ron Walker

HVAC Certification Course

HVAC Training Articles

July 20, 20160Comments

Awesome Day of HVAC Training

HVAC Training Online and Onsite: For more information please call - (904) 671-7144 We take your HVAC training quite seriously. If you master the complex challenges of air conditioning repair, it will

by Ron Walker

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