Repair-Rebuild-Renovation

At 3R RV in Union, MO, we service all Motor Homes, Class A, Class B, Class C, 5th Wheel, Travel Trailers, Luxury Coaches, Utility Trailers, Boat Trailers, and Horse Trailers. We service all makes & models, such as Fleetwood, Tiffin, Keystone, Monaco, Prevost, Newell, Country Coach, Holiday Rambler, Allegro, Jayco, Newmar, and Bluebird, to name a few.


We are a proud member of FMCA, RVIA, RVDA, RVTI, and we are Nationwide Preferred Provider for Insurance claims. We also work with many other insurance companies like State Farm, All State, American Family, Travelers, Shelter, Safeco, AMCO, Gieco, and others. We work with Extended Warranty companies such as Good Sam’s, Protective, Ride-Rite, Phoenix, Choice, AGW, Cornerstone, Fixed Forever, Vantage, and many more.

The 3R RV Service Center Experience

RV Service Department

Our Service Department has four bays, each holding up to a 45-foot bus. Our lot has plenty of room to turn around, even if you tow a vehicle. Our technicians are well experienced with over 100+ years combined experience, and they are RVIA/RVDA certified or are in training and learning from the best. Give our RV service department a call. We are ready to service your needs. From floor to ceiling, outside to inside, engine maintenance, appliance repairs, or new installation, you may want to update the look of the inside or change a sofa for a dinette.

We Have RV Parts in Stock

We also have a full line of RV parts and accessories, including Awnings, Air Conditioners, Furnaces, Water Heater, Refrigerators, Inverters, Converter, Hitches, Tow Bars, Base Plate, Gooseneck, Brake Controls, Toilets, and satellite TV. Some of the brands we carry are Dometic, Norcold, Carefree, A&E, Camco, Reese, Drawtite, Husky, Easy Lift, Brake Buddy, Hayes, Tekonsha, Road Master, Super Glide, Blue Ox, Demco, Sure-Flo, Aqua Hot, Webasto, Brisk Air, Coleman, Carrier, Atwood, Suburban & Hydroflame, Onan Generators, Xantrex Inverters and Solar. 3R RV Service Center also has what you need for camping and floating.


Our customers come from all over like St. Louis, Troy, Rolla, Sullivan, Cuba, Bourbon, Union, St. Clair, Eureka, Fenton, St. Charles, St. Peters, I-44, I-70, Arnold, Festus, Desoto, Farmington, Wentzville, Lake St. Louis, Hillsboro, Springfield, Arkansas, Arizona, Illinois, Indiana, Texas, California and Florida.

RV Generator Tip

  • Extending the Life of Your Generator

    You must read your generator owner’s manual and warranty information regarding who is responsible for what regarding routine and scheduled maintenance. Often, scheduled maintenance that is required and not performed can void your warranty and shorten the life of your generator set.


    Preventive maintenance consists of cleaning, inspecting, lubricating, adjusting, and servicing your generator. Before starting your generator, you should, at minimum, inspect the generator set for fuel or oil leaks, inspect the exhaust system for proper mounting and leaks, and check the oil level. Also, ensure the CO detector(s) are operating properly, and all appliances are turned off.


    Routine maintenance based on hours of operation: Monitor the generator hour meter and have the required maintenance performed at specified intervals, per your owner’s manual.


    Exercise Your Generator: On a bi-weekly basis, start your engine and let it run for 1 hour with a 50% load. This will keep your engine seals lubricated and helps prevent moisture buildup.


    Storing Your Gas Generator: fill the fuel tank and put a stabilizer like Sta-bil. You still have to start the generator every two weeks, but the stabilizer will help with keeping the fuel from jelling in the carburetor. Changing your oil and filter before storage can save your bearings from corrosion.

We Service Most Makes and Models of RVs

Call us for any of the following services:

  • Factory Recalls
  • Extended Warranties
  • Insurance Claims.
  • Air Conditioners – Duotherm, Coleman, Brisk Air
  • Hydronic Heating – Aqua Hot, Oasis, Hydra Hot, Hurricane
  • Roofing – Rubber, TPO, Fiberglass, Aluminum, Xtreme
  • Graphics, Decals
  • Tow Brakes, Tow Bars – Road Master, Blue Ox, Draw Tite, Hayes, Demco
  • Refrigerators – Dometic, Norcold
  • Furnaces – Suburban, Atwood, Hydroflame
  • Awnings – A&E, Carefree, Girard, Zip Dee
  • Converters – Progressive Dynamics, Friendship, Atwood, Elixir, Iota, Parallax, Todd, WFCO
  • Inverters – Magnum, Xantrex
  • Generators – Onan
  • Exterior Repairs and Body Work - including hail damage, tire blow-out damage, side wall repair and replacements, slide room repairs, fiberglass & metal repairs
  • Interior – complete remodeling, custom woodworking,
  • Furniture replacements/upholstery
  • Flooring - carpet, tile, vinyl, wood floors
  • Complete LP repair & fabrication
  • Windshield replacement
  • Toilets – Sealand, Thetford, Microphone, Headhunter
  • ALL plumbing and holding tanks
  • Virtually any appliance in an RV
  • Rehab - minor to complete tear out and remodel
  • Pick up and drop off of your Trailer or Motor Home available for additional fees
  • Before the Kitchen Stove Renovation | Union, MO | 3R RV & Horse Trailer

  • After the Kitchen Stove Renovated | Union, MO | 3R RV & Horse Trailer

  • Before Remodeling the RV Roof | Union, MO | 3R RV & Horse Trailer

  • After Remodeling the RV Roof | Union, MO | 3R RV & Horse Trailer

  • Before Remodeling the Laundry Cabinet | Union, MO | 3R RV & Horse Trailer

  • Laundry Cabinet | Union, MO | 3R RV & Horse Trailer

  • Before Rebuilding the Side of RV Vehicle | Union, MO | 3R RV & Horse Trailer

    Slide title


  • After Rebuilding the Side of RV Vehicle | Union, MO | 3R RV & Horse Trailer

  • Before Couch Replacement | Union, MO | 3R RV & Horse Trailer

  • After Couch Replacement | Union, MO | 3R RV & Horse Trailer

  • Before Remodeling the RV | Union, MO | 3R RV & Horse Trailer

  • After Remodeling the RV | Union, MO | 3R RV & Horse Trailer

  • Slide title

    Write your caption here
    Button
  • Slide title

    Write your caption here
    Button
  • Slide title

    Write your caption here
    Button
  • Slide title

    Write your caption here
    Button
  • Slide title

    Write your caption here
    Button
  • Slide title

    Write your caption here
    Button
  • Slide title

    Write your caption here
    Button
  • Slide title

    Write your caption here
    Button
  • During Mobile RV Detailing | Union, MO | 3R RV & Horse Trailer

  • After Mobile RV Detailing | Union, MO | 3R RV & Horse Trailer

  • Before Mobile RV Renovating | Union, MO | 3R RV & Horse Trailer

  • After Mobile RV Renovating | Union, MO | 3R RV & Horse Trailer

  • Mobile RV Shower Room | Union, MO | 3R RV & Horse Trailer

  • Two Laundry Machines | Union, MO | 3R RV & Horse Trailer

  • During the Ceiling Renovation of Mobile RV | Union, MO | 3R RV & Horse Trailer

  • During the Renovation of Ceiling | Union, MO | 3R RV & Horse Trailer

NO JOB IS TOO BIG, AND NO JOB IS TOO SMALL! Whether you are local or passing through, we will do our best to get you on your way to enjoying your time and travels. Call at (636) 583-2244.

Share by: