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Monday 5am - 5pm Tuesday 5am - 5pm Wednesday 5am - 5pm Thursday 5am - 5pm Friday 5am - 5pm Saturday 9am - 3pm Sunday 9am - 3pm

Mastermind Electric, LLC

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United States
Johnson City, TN
Mastermind Electric, LLC

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Mastermind Electric, LLC delivers high-quality, reliable electrical services with a focus on professionalism, safety, and customer satisfaction.

Proudly serving Johnson City and surrounding communities. Our professionally trained and certified staff is ready to provide you with excellent service and quality workmanship. Whether it's something as simple as having a light installed or a complete home wiring project, our qualified staff is here to serve you. For more information please contact our office today

11/01/2026

🎃⚡ Happy Halloween from Mastermind Electric LLC! ⚡🎃
Wishing all our friends, customers, and neighbors a fun, safe, and brightly lit Halloween!
While the little ghosts and goblins are out trick-or-treating, we’re thinking about safety. Take a quick look at your outdoor lights, extension cords, and decorations — a little check can prevent big scares.
Need any electrical help before or after the big night? We’ve got you covered.
Stay safe, have a blast, and Happy Halloween from the whole team at Mastermind Electric LLC! 👻🔌

10/26/2026

Before/After: Correcting a recessed electrical box and restoring proper conductor continuity.
Under NEC 314.20, any electrical box installed in a wall or ceiling made of combustible material must be flush with or project out from the finished surface. There is zero tolerance for setback. This box was recessed, so I installed a listed box extender to bring it into compliance.
I also pigtailed the conductors. Per NEC 300.13(B), the neutral in a multi‑wire branch circuit must remain continuous and cannot rely on the device to maintain continuity.
Small corrections like this prevent arcing, overheating, and future failures.

10/15/2026

Install new pendant lights above kitchen island

10/09/2026

Keeping your HVAC equipment protected and your home running safely. Just wrapped up a clean install of new AC disconnects with integrated surge protectors. These units now have an extra layer of protection against lightning strikes, utility spikes, and East Tennessee power fluctuations — helping prevent expensive compressor failures and nuisance breakdowns. If your HVAC system doesn’t have surge protection, it should. It’s one of the most cost‑effective upgrades you can make to protect your investment.📍 Johnson City, TN
⚡ Mastermind Electric LLC® — Licensed • Insured • Local

07/04/2026

Happy 4th of July from Mastermind Electric!
Wishing everyone a safe and bright Independence Day as we celebrate the freedom that powers our great nation. Enjoy the holiday with family, friends, and good times — and stay safe out there! ⚡🇺🇸

05/27/2026

We honor the heroes who made the ultimate sacrifice for our country.
Mastermind Electric is grateful for their courage, their service, and the freedoms we enjoy because of them.
Wishing everyone a safe and meaningful Memorial Day. 🇺🇸

05/14/2026

Let’s talk straight.
Across the industry, too many people are doing electrical work without the proper license — and it’s hurting everyone. Homeowners get unsafe wiring. Contractors get blamed for jobs gone wrong. Legit tradesmen lose work to cut‑rate shortcuts.

If you’re hiring or subcontracting electrical work, ask for the state license. It’s not optional — it’s the law.
👉 Verify any electrician or contractor instantly at verify.tn.gov

At Mastermind Electric, we stand for doing it right:
Licensed. Insured. Code‑Compliant.
Because when the work is legal and safe, everyone wins — homeowners, builders, and the reputation of our trade.

No shortcuts. No surprises. Just power done right.

📞 Call or text 423‑900-7875 for licensed electrical work done the right way.

05/10/2026

Happy Mother’s Day from Mastermind Electric!
To all the moms who keep life running smoothly — with love, patience, and endless strength — we appreciate you.
Wishing you a day full of rest, joy, and well‑deserved appreciation. 💛⚡

05/05/2026

Happy Cinco De Mayo from Mastermind Electric

04/28/2026

Mastermind Electric is now fully licensed and insured in the State of Tennessee!
We are officially certified as a CE Electrical Contractor with a $500,000 monetary limit.
Proud to bring quality, honest electrical work to our community. TN License #85705

Address

Johnson City, TN

Opening Hours

Monday	5am - 5pm
Tuesday	5am - 5pm
Wednesday	5am - 5pm
Thursday	5am - 5pm
Friday	5am - 5pm
Saturday	9am - 3pm
Sunday	9am - 3pm

Telephone

+16029101224

Website

http://mastermindelectric.com/

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