cartoon doggie  EMS

 

       ENERGY MARKETING SERVICE

PHONE  252-943-1028 (9:00 am- 6:00 pm ET, M-F)

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  SERVING HVAC AND PLUMBING CONTRACTORS SINCE 1986

 

 

FREE INTERNATIONAL CODE BOOKS, CLICK HERE SAMPLE PLUMBING EXAM HELP WITH PASSING THE PLUMBING EXAM

"Guide to Passing the Plumbing Exam"

SAMPLE HVAC EXAM HELP WITH PASSING THE HVAC EXAM

"Guide to Passing the HVAC Exam"

Practice Contractor's Business and Law exam

 THE WORLD'S EASIEST LOAD CALCULATOR SOFTWARE

click here to learn more

INSTRUCTIONS FOR EMS LOAD CALCULATOR

AN HVAC PRIMER FOR CONTRACTORS and HOMEOWNERS

Info for handicap plumbing facilities Accessible and Usable Buildings and Facilities

NEED TO BRUSH UP ON CONTRACTOR MATH? CLICK HERE

USEFUL INDUSTRY LINKS

TEST YOUR ABILITY TO ANSWER TRICK QUESTIONS

 HOW TO SIZE DUCTWORK

 

 

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How to charge a refrigeator

http://youtu.be/QXdn1f0wzH0

How to charge unit using subcooling

 

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