customer reviews

Don’t just listen to us. Take it from our customers and their 600+ 5 Star Reviews.

Trusted by America’s Biggest Companies

Maddox transformers are installed in all 50 United States, Canada, and South America. We’ve provided thousands of transformers to the companies that power American industry.

What Our Customers Say

Wondering if you can trust Maddox with your next project?  Listen to what some of our customers have to say.

600+ 5 Star Reviews

Having the largest transformer inventory in the USA doesn’t help anyone without the team behind it. At Maddox we pick up the phone when you call and ensure you get the transformer you need when you need it.

This product works fantastic for my office. It is used to supply voltage for an EV charger and works flawlessly.

Mike C.

Couldn't ask for more! It was easy to find the right product using the website. Purchasing online was simple. Delivery was fast.

Mark R.

Order shipped and arrived within the week, unit in excellent condition, could not ask for better customer service!

Larry M.

The transformer works great! It allows us to run our 480v moulder/planer with our 240v electric service. The service techs were excellent with answering any questions I had about installation and operation.

Krisopher W.

I love Maddox! I wish I had the opportunity to order from them more frequently. Always so helpful and fast shipping

Jennifer M.

I got this delivered in just a few days. The tech support guys helped me pick the correct transformer for my application. I’m stepping up from 208 to about 380 for a foreign made packaging machine. I also like that the transformer has multiple legs so I could use this for a different application someday.

Jason

Maddox was great to work with! They supplied a quality product and were able to do so with a quicker turner around time then similar vendors. I will consider them for future projects.

Jake M.

Puchaced a reconditioned 3 phase 30KVA 480^ - 208/120Y dry type general X-former for a reasonable price. Delivery was quick and packaging was tight with all the KO punched in the past sealed up. Will use them again for future X-former needs.

Steven P.

I order a used transformer, but the one I received looks brand new! Old Dominion delivered this at noon today (Monday, July 13). I ordered it Friday (July 10)...if this 400 lb transformer had been a 5 oz FedEx overnight envelope, it would not have arrived faster than Maddox got it here. 'Most excellent'.

George L.

Your service and response was impeccable. T he equipment quality is excellent. It was a pleasure to work with Jeremiah. He was fantastic, sent me all the drawings and paperwork superfast. Can't wait to need another transformer. Thank you very much.

Elliott J.

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A padmount transformer outside a data center filled with fr3 fluid