RV Repair & Service for Festus, MO & South Jefferson County

Festus, Crystal City, Herculaneum, De Soto — the south Jefferson County corridor along I-55 is packed with RV owners. The area has strong blue-collar roots, families who work hard and camp harder, and rigs that see real use on weekends and vacations. When your trailer or fifth wheel needs more than an oil change, you need a shop that understands the kind of equipment south county families own.

3R RV Service Center is about 40 minutes northwest of Festus in Union, MO. We're a family-owned shop — not a corporate chain, not a dealership service bay. Our RVTI Level 4 Master Certified technicians grew up wrenching on the same kind of equipment that rolls through south county campgrounds every weekend.

South County Camping Culture

This area camps. Sandy Creek Covered Bridge, Washington State Park, Hawn State Park, and the Mark Twain National Forest are all within an hour. That means trailers and fifth wheels getting towed on gravel roads, parked on uneven surfaces, exposed to Ozark weather, and packed up for the drive home every Sunday. That kind of use creates real wear — and we fix it all.

What We Do

  • Roof repair and full replacement — EPDM, TPO, fiberglass, rubber
  • Water damage restoration — floor rot, wall delamination, slide-out leaks
  • Electrical diagnostics — 12V, 120V, inverters, solar, coach wiring
  • Slide-out repair, alignment, and seal replacement
  • Brakes and suspension — trailers and 5th wheels
  • Onan generator service — certified
  • Aqua-Hot heating — certified
  • Appliance repair — Dometic, Norcold, Suburban, Atwood
  • Plumbing system repair
  • Awning repair and replacement
  • Complete RV rebuilds and renovations
  • Horse trailer repair and service
  • OEM and aftermarket parts
  • Secure RV storage

Factory Authorized

Newmar, Tiffin, Keystone. All brands serviced.

Getting Here from Festus

Take Highway 67 North to I-55 North to I-44 West, exit Highway 50. Or take Highway 21 North to Highway 30 West. About 40 minutes. 7819 Highway 47 S, Union, MO 63084.

Call us at (636) 583-2244 or Book an Appointment online.