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How to Use a Multimeter to Troubleshoot HVAC Circuits

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Problem: In troubleshooting heating and air conditioning problems it is very important to know how to use a multimeter.  I remember when I did not know how to use a multimeter and I would use the trial and error method for testing circuits! If the circuit breaker blew then I had it wired wrong. If the breaker held I was right! This, of course, was very dangerous and I do not want anyone to use this trial and error method! The trial and error method is very scary, to say the least!  It is a wonder that I did not burn the house down or get hurt from electrical shock! Many people do not know how to use a multimeter and I wanted to list this post and video that shows how to use a multimeter! Of course,  as we all know electricity (the flow of electrons in a conductor) can not be seen. We need to know how to use a multimeter and we need a good multimeter to be able to troubleshoot, find, and fix HVAC, automobile, and home electrical problems. 

Solution: Learn how to properly use a multimeter to troubleshoot heating and air conditioning equipment. We have a really good YouTube video made by Word of Advice TV that explains how to use a multimeter in detail. The Word of Advice Video explains what the multimeter is capable of doing and then shows how each of the functions of the multimeter is used in troubleshooting and testing a furnace. The video shows how to check resistance, voltage, continuity, capacitors, batteries micro-amps, and more! Thanks so very much to Word of Advice TV for making this excellent educational video!  We sell the same G2 Phoenix Pro multimeter that is used and shown in the video below on the following page: Please click here if you are interested in the Phoenix Pro Multimeter that we sell. 

It is unbelievable and awesome how many different tests and functions that you can do with a good multimeter! The most useful thing that I found with multimeters in troubleshooting is the ability to read electricity and amperage through an insulated wire! How can it do that? Just clamp around the outside of the wire and see how many amps are being used and see the flow of electricity! Awesome to say the least!  I hope this video helps you understand how to use a multimeter! If you have any questions please email us anytime or comment below. Our email address is

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