Cummins Onan P4500idf Portable Inverter Generator
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At a glance
- Running Watts (Gas)
- 3,700 W
- Peak Watts (Gas)
- 4,500 W
- Running Watts (Propane/LP)
- 3,330 W
- Peak Watts (Propane/LP)
- 4,050 W
- Fuel
- Dual Fuel - Propane or 87-93 octane gasoline
- Engine
- Cummins Onan 224cc OHV 4-stroke
- Tank Capacity
- 3.4 gal (12.8 L)
- Runtime
- Gas: 12.5 hrs @ 25% load (8.2 hrs @ 50%); Propane: 15 hrs @ 25% load (20 lb tank)
- Noise
- As low as 52 dBA
- THD
- ≤3%
- Outlets
- (1) 120V 30A TT-30R, (1) Duplex 120V 20A (5-20R), (2) 5V USB
- Start Type
- Electric push-button, remote start fob (33 yd), recoil backup
- Voltage / Frequency
- 120V, 60 Hz
- Weight
- 104.7 lb (47.6 kg) dry
- Dimensions (LxWxH)
- 25.5 x 18.12 x 20.5 in
- Parallel Capable
- Yes (with P4500i or P2500i)
- Emissions
- EPA, CARB, CSA compliant
- Warranty
- 3-year residential / 1-year commercial
Why this generator
- Dual-fuel flexibility: run on gasoline (3,700W running) or propane (3,330W running) with the flip of a switch
- Clean inverter power with ≤3% THD - safe for sensitive electronics like phones, tablets, and laptops
- Three ways to start: push-button electric, included factory-paired remote fob (up to 33 yards), and recoil pull-cord backup
- Ultra-quiet operation as low as 52 dBA thanks to double-insulated design
- RV- and camper-ready with a 30A TT-30R outlet, plus a 120V 20A duplex and two 5V USB ports
- Lightweight at 104.7 lbs with telescoping handle and wheels; parallel-capable with another P4500i or P2500i for more power
Everything you need to know
The Cummins Onan P4500idf is a 4,500-watt portable inverter generator built for real-world power on the move — camping and RVs, tailgating, the jobsite, and emergency home backup for the essentials when the grid drops.
Clean Inverter Power for Sensitive Electronics
Inverter technology produces clean, stable sine-wave power (low total harmonic distortion) that's safe for laptops, phones, TVs, and other sensitive electronics — power a conventional open-frame generator can't guarantee. It also runs quieter and lighter than conventional units of similar output.
Dual-Fuel: Gasoline or Propane
The P4500idf runs on gasoline or propane, so you're never stuck without power. Propane stores indefinitely and burns clean for emergency standby; gasoline gives you quick power anywhere. Switch fuels with a simple selector.
Ready When You Need It
With 4,500 starting watts, the P4500idf comfortably powers what matters in an outage — refrigerator or freezer, lights, fans, phone and laptop chargers, a window AC or sump pump — and on a job it keeps tools running where there's no outlet. Genuine Cummins Onan build quality means it starts when you ask it to, year after year.
Genuine Cummins Onan, Shipped Free
This is a genuine Cummins Onan portable, backed by the Cummins factory warranty. Total Generator Pros ships it free within the contiguous United States, with real generator experts a phone call away before or after the sale.
- 4,500 starting watts
- Inverter technology — clean, electronics-safe power
- Dual-fuel: gasoline or propane
- Genuine Cummins Onan — factory warranty
- Free shipping (contiguous US)
- Part Number: A068H732
Frequently asked questions
Does the price include installation?+
No — the online price covers the unit shipped free to the lower 48. Professional installation is available in NC & SC on a quote basis; outside that area we'll help you find a qualified local installer.
How fast does it ship?+
Free curbside / liftgate shipping to the contiguous 48 states. Most orders leave the warehouse in 3–5 business days.
What warranty is included?+
5-year limited factory warranty, registered and supported directly through Cummins.
Is financing available?+
Yes — 0% APR financing is available on qualifying orders. Ask us for details before checkout.
Free curbside shipping
Liftgate delivery to the lower 48. Most orders leave the warehouse in 3–5 business days.
Install help, no upsell
We size, spec, and connect you with a vetted local installer — or talk your contractor through it for free.
Real Cummins warranty
Full 5-year limited warranty — registered and supported through Cummins directly.