Free Shipping On Electric Generators (Lower 48) Tax-Free Except Illinois Orders
Welcome | Sign In or Contact Us
Your Cart @ Electric Generators Direct Cart:
Free Shipping on Electric Generators and Accessories*
Shop Electric Generator Accessories
Quick Search
Generator Models

Cummins Onan RV QD12500 - 12.5kW RV Generator (Diesel)

Cummins Onan Electric Generators and Accessories
Model: RV QD 12500
(Based on expert analysis, manufacturer ratings and customer reviews)

4.5 out of 54.5 out of 54.5 out of 54.5 out of 54.5 out of 5
2 Reviews
Share This Product
Plus 1 This Product
Tweet This Product
Pin It!
Factory DirectFactory Direct
Ships in 4-7 Business Days

Factory items ship direct from the manufacturer. Shipping times vary.

  • Features
  • Specs
  • 1
  • 2
  • Articles
  • Shipping
  • Accessories
Run Watts
Rated Watts
120/240 Single-Phase

Product Video Disclaimer: "PED is not responsible for any variances from the product in this video and the item you purchase. Please review all product specs prior to purchase."

12.5 kW Diesel Powered RV Generator (Model 11506)
Designed for Type A RVs w/ 3 AC units (50A 2-Pole Breaker)
Runs 3 15,000 BTU AC units w/ 5000 additional watts available

Cummins Onan 1647cc Liquid-Cooled Diesel Engine
Automatic timed glow plugs for quick & easy starting
Elec. fuel pump w/ full oil & fuel filter (.48 Gal/h @ 1/2 Load)

Microprocessor Controlled
Self-diagnostic capability to simplify troubleshooting

High Quality, Pure Sine Wave Electrical Output
Digital voltage regulator prevents damaging spikes

Computer-Controlled Variable Speed Operation
Matches engine speed to load demand, minimizes noise levels

Sound-Attenuating Design w/ USDA Approved Spark-Arrestor Muffler
Lowers noise levels while providing cross-flow cooling

Three-Point, Fully Focalized Mounting System
Reduces vibration for quieter operation
Stationary exhaust pipe connection point for easy installation

Integrated Generator Set & Engine Control
Provides user friendly controls and safety features

3 Year / 2000 Hour Warranty (Please See Warranty Sheet)
Engine Brand
Cummins Onan
Starting System
12-Volt Button Start
27 HP
1647 CC
Consumer Engine Warranty
3 Years
Low Oil Alert/Shutdown
Product Specs
120/240 Single-Phase
60 Hertz
Auto Voltage Regulation
Rated Watts
12500 Watts
Fuel Type
Rated Amps
52 @ 240 Volts (Single Phase) Amps
Decibel Rating @ 7m
(68 @ 3M - Half Load) db(A)
Hour Meter
Min. Air Outlet - Bottom
15" x 16"
Min. Air Inlet - Front
19" x 12"
Grade Type
770 Pounds
Product Style
RV Generator
Product Length
41.4 Inches
Product Width
24.5 Inches
Product Height
27 Inches
Consumer Warranty
3 Years
RV QD 12500
Subject: Store ID: Product ID: Data Category: Brand Category:

*Ask Mike about the Cummins Onan RV QD 12500. Sorry, no repair questions:




 Receive Weekly How-To Tips & Specials 

*Required Field Submit
  1 Question
Q: I RV and know how much other people hate when you run your generator because of the noise. How much quieter have they become? I am looking at the onan 12500w
by Linda Walsh from New Hampshire on August 06, 2012

A: I would say that sound levels have been reduced significantly over the years. The Cummins Onan RV QD12500 is one of your higher quality units out there and is rated at 68 db(A) @ 3M - Half Load. Per the product specs, it also meets national Park Service Requirements (60 db(A) @ 50Ft) for national park use and typical installation will further reduce sound levels.
by Mike, Product Expert
Cummins Onan RV QD 12500 Reviews & Ratings
2 Reviews  Sort by 
Mike, the Generator Expert
Electric Generator Expert

Product Expert
Total Reviews
103 Reviews
Total Helpful Votes
10843 Helpful Votes
Electric Generators Direct Recommended

If you are thinking about buying an RV generator from us, you are most likely replacing an existing generator which was probably an Onan.

Most customers coming to us have an Onan RV generator in their RV now. We always like the motto, "If it isn't broken, why fix it"? But in this case, yours is probably broken, which is why you are looking to buy a new one.

Did you have years of reliable service and creature comforts in your RV because of your old Onan RV generator?

Well,... more
Mike Recommends This Model
Was this review helpful?
Tom C.
Pacific Palisades, CA
Total Reviews
3 Reviews
4 out of 54 out of 54 out of 54 out of 54 out of 5
"quiet Diesel"
While Onan advertises these generators as quiet, their cooling fans put out noise to the point that if you're in a quiet campground can be irritating. And servicing in the cabinet can be challenging.
Tom Recommends This Cummins Onan Product
Was this review helpful?
Free Freight
  • Ships via Semi-Truck
  • Requires a loading dock or forklift
  • Free to Lower 48 States
We currently CANNOT ship this product to Alaska, California, Hawaii, Indiana, North Dakota, Wisconsin or any destination outside of the United States
Lift Gate Services
  • Safely Lowers Products Off the Truck
  • Requires Special Hydraulic Lift
  • Free Lift Gate
 Learn More  Learn More

Learn More About 338-3490-01



Learn More About 338-3490-02



Learn More About 300-4942



Learn More About 300-4943



Learn More About THP215


Sign Up
Receive Weekly How-To Tips & Specials

Shop for the Cummins Onan RV QD12500 - 12.5kW RV Generator (Diesel) at Electric Generators Direct. Research Cummins Onan rv generator online. Find Cummins Onan RV QD 12500 rv generator & onan 12.5 kw quiet diesel rv generator features and specifications. Get the best deal; compare Cummins Onan RV QD 12500 prices now. Buy the RV QD 12500 direct and save.