#Multimeter July 20
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In July 2025, many of us are taking part in the 30-Day “Tool” Coach4aday Challenge. Each day, the challenge encourages participants to share a tool that can help people with productivity, organization, and communication. Tools are essential in many occupations and hobbies. Today my choice is going to be a tool used by HVAC professionals called a MULTIMETER.
My wife and I are blessed to know and employ a wonderful Electrician/HVAC professional named Rudy Jones. When he comes to our house, he often has to utilize his Multimeter. During his visits he indulges me with questions about what that device is actually doing in helping him diagnose the issue.
Tool-30 Day Challenge Guidelines
As with previous challenges, participants are encouraged to adapt the guidelines to fit their own circumstances. If you can, commit to sharing something about a tool in July.
- Record something about a particular tool. It can be physical or digital. It may also be something that has been replaced with advanced technology.
- Share with a challenge partner if you have one.
- Join the conversation by posting on social media with the hashtag #Coach4adayChallenge
July 20-Multimeter
Rudy has explained to me that his multimeter helps diagnose electrical issues by measuring voltage, current, and resistance in system components. It’s essential for checking power supply to units, testing thermostats, and verifying continuity in fuses or wiring. By identifying faults quickly and accurately, a multimeter improves both safety and efficiency in HVAC troubleshooting and repair.
Here is how to use a multimeter
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