Hvac Tech Notes 

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Tech notes on industry related subjects. 

• Evaporative Cooling

• Air Conditioning Check Out

• Brazing 101

• Boilers

• Ohm's Law

• Steam Boilers

• Basic Refrigerant Cycle

• Two Column P/T Charts        

• Full-Load Currents of Motors

• What You Should Know About Refrigerant Safety

• How A/C affects the ozone layer

• BACnet^TM, the standard communications protocol 

• Refrigerant Phase out chart
  

Ohm's law?
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Notice

 Please note that these are articles and views submitted by tradesmen and fellow readers, all info and comments should be verified by certified HVAC service technicians and companies.  All equipment and system design changes should also be approved by your insurance companies and city building officials.