Used Transformers for Sale — Florida & Nationwide

The two big families are dry-type and liquid-filled. Dry-type transformers use air and cast or ventilated insulation, which makes them the safer indoor choice with no oil to contain — common up through the low-medium-voltage range. Oil-filled (liquid-filled) transformers cool with fluid, handle higher loads and voltage classes efficiently, and dominate pad-mount and substation duty outdoors. Beyond the family, the numbers that matter are kVA, primary and secondary voltage, and voltage class.

Matching a used transformer means lining up all of those to your service: the kVA to your load, the primary voltage to your incoming service, and the secondary to what you're feeding. Send us the nameplate you're replacing or your one-line, and we'll match you to a unit that actually fits rather than sell you the closest thing in the yard.

New transformers have been one of the hardest pieces of electrical gear to get, with backlogs stretching many months for anything beyond stock sizes. A sound used transformer does the same job for a fraction of the price and lands in weeks, not quarters — which for a project on a schedule can be the difference between energizing on time and not. Units we pull from decommissions come with a known history rather than an auction guess.

Before you buy, confirm the kVA, primary and secondary voltage, and voltage class, and decide oil versus dry for your environment. For oil-filled units ask about oil testing and any leaks; for any unit, look for insulation-resistance and turns-ratio test results. We document all of it so you can weigh tested units against as-is bargains honestly. Transformers are often bought alongside switchgear from the same lineup — ask and we'll tell you what came out together.