Here's some great new items just added to the Educational Forums:

Six Handy HVAC Calculators:

NICOR - Natural Gas Reference Guide:

Natural Gas Pipe Sizing:


Danfoss Turbocor Compressor (Video):

Copeland PerformanceAlert (Video):

Robertshaw Basic Heat Gas Valves:

Blower & Motor Calculations:

Belt Energy Efficiency (Video):

Belt Efficiency Calculator:

Psychrometric Chart Tutorial:

Psychrometric Chart Lesson:

Sheet Metal Fitting Fabrication (Video):

Rotary Compressors Explained (Flash Video):

Vilter Single Screw Compressor (Video):

Copeland Digital Discus Compressor (Video):

Emerson/RDT Eco-Cool Refrigeration Rack (Video):

RDT Refrigeration Systems:

Free Online CO2 E-Learning Course:

Kelvinator/Universal Nolin: