About D&S

D&S rebuilds wood chipper catalytic converters — the right way, here in America — so tree crews and equipment owners aren't stuck paying full OEM for a part that can be brought back to life.

What we do

When a chipper's converter plugs up, the usual answer is a wince-inducing OEM price and a long wait. We built D&S around a better one: rebuild the converter you already own. A fresh catalyst substrate goes into your original housing, built to meet EPA emissions standards, and it comes back on a core exchange in 3–5 business days for about half the cost of new.

Rebuilt in America

Every D&S converter is remanufactured right here in the United States and shipped from our Massachusetts operation. Your core never leaves the country. That means faster turnaround, work you can stand behind, and American hands on every unit.

Part of New England Supply House

D&S is the rebuild brand of New England Supply House in Foxboro, MA — the same team that supplies HVAC, heating, and equipment repair parts nationwide. That gives you a real company behind the rebuild: a phone number that a person answers, straight talk on fitment, and a warranty against manufacturing defects on every converter we send out.