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Industry veterans with industry focus



What we do

Maddox sells, rents, and repairs transformers.

Our product scope includes padmount, substation, dry-type transformers, and pad mounted and metal enclosed switchgear.

Our Goal

We aim to provide you with a dependable product and outstanding customer service. No matter what, we strive to conduct ourselves with integrity and upright character, because we know that our greatest assets are a good reputation and strong relationships with our customers.

Our Focus

Our experience has taught us that the best way to accomplish our goal is to deliberately concentrate our expertise on a single line of products. From the very start, Maddox was built with an exclusive focus on industrial and commercial transformers and transformer-related equipment.

Who we serve


Maddox exclusively serves the commercial and industrial segment of the transformer market in the United States. We work with small one-man operators, all the way up to the largest industrial projects in the country. Our customers value speed, transparency, and an easy buying experience.


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Our commitment

Fast delivery

With thousands of units in-stock and expedited production slots available, Maddox is dedicated to fast lead times and helping you get your project powered on as fast as possible.


An easy buying experience

Our highly trained sales and customer service teams are dedicated to finding you the right transformer and delivering it to you at the right time.


Our Team

We strive to preserve a culture in which every employee can thrive, find purpose, and become part of a close-knit team. The result is a one-of-a-kind employee experience, and great customer service.

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Our Locations

We have factories, sales offices, and stocking warehouses across the country to support our nationwide customer base.


map of Greenville, South Carolina

Greer, SC

303 B Greer Dr.
map of Houston, Texas

Houston, TX

2002 Timberloch Place Suite 200
map of Moscow, Idaho

Moscow, ID

230 West E St.
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Battle Ground, WA

1608 SE Commerce Ave
map of Dyersburg, Tennessee

Dyersburg, TN

2225 Industrial Road

We're ready to help

Call our toll-free number 1-800-270-2011 or complete the following inquiry form and our team will get back to you as soon as possible.