Cummins Onan · Inverter generator

Onan P11000iTF

Name: Cummins Onan Onan P11000iTF
Brand: Cummins Onan

High-output 120/240V inverter power with gasoline, propane, or natural-gas operation.

9,000W running11,000W peak64 dBAGasoline + Propane + Natural gas

Check availability Official spec sheet

Product image: Cummins

Product decision summary

Researched by Andrew Petla · reviewed under the FMG editorial standard · Sep 15, 2026

Trace the evidence · not a hands-on review

Bottom line

Competitive in its class for home emergency backup & large rv air conditioners.

Best for: Home emergency backup & Large RV air conditioners

Running output

9,000W

Fuel / power

Gasoline + Propane + Natural gas

Weight

219 lb

Strongest reasons

High-output 120/240V inverter power with gasoline, propane, or natural-gas operation.
Running output is higher than 66% of its class.
Peak output is higher than 63% of its class.

Know before buying

At 219 lb, this is a wheeled or placed unit—not a carry-style generator.

Scores at a glance

Class score

Starter fit

Competitive in its class among 65 high output inverter generators.

Good fit

See score details Personalize in 60 sec

Best current buying route

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Price intelligence Evidence ledger Accessories & manuals

Key specifications

The numbers that drive the decision.

Published values stay labeled, and every usable metric includes class context. Missing data is shown instead of estimated.

Open complete specifications

Specification	This model	Class median	Context
Running output	9,000WHigher than 66% of its class	8,300W	Higher than 66% of its class
Peak / starting output	11,000WHigher than 63% of its class	10,500W	Higher than 63% of its class
Product weight	219 lbLighter than 29% of its class	207 lb	Lighter than 29% of its class
Published sound level	64 dBAQuieter than 62% of its class	64.3 dBA	Quieter than 62% of its class
Fuel / power source	Gasoline + Propane + Natural gasInverter generator	Not applicable	Inverter generator
Best current price	Check current priceSee current offers at Cummins	Prices change	See current offers at Cummins

Class comparisons use 65 high output inverter generators. Runtime figures can use different loads, fuels, or test conditions; confirm the model manual before planning fuel or battery duration.

Product gallery & complete specifications Official imagery, full spec tables, use cases, and source linksView details

Visual spec gallery

The numbers, made scannable.

Scroll sideways to explore →

01 · Output by fuel

Up to 11,000 peak watts

Gasoline9,000W running

75A @ 120V / 37.5A @ 240V11,000W peak

Propane8,100W running

67.5A @ 120V / 33.8A @ 240V10,000W peak

Natural gas7,200W running

60A @ 120V / 30A @ 240V8,800W peak

Power output changes by fuel. Match against the rating for the fuel you will actually use.

02 · Runtime & sound

Gas · 25% load

16.5hr

Propane · 25% load

6.7hr

Operational volume

64 dBA

Manufacturer-rated minimum

Onboard tank

7.4 gal (28 L) gasoline

03 · Size & mobility

219lb

Dry weight

30.3 × 25.0 × 27.0 in

L × W × H

Handle: Lockable cantilevered handle
Wheels: 8 × 2 in wheels
Shipping weight: 225 lb
Extended length: 45.7 in

04 · Connection & control

Start

Electric, remote, recoil

Engine

457cc Cummins Onan OHV 4-stroke

Power quality

≤3% THD · inverter

Safety

Low-oil shutdown · CO shutdown

1 duplex GFCI 120V 20A (5-20R) · 1 × 120/240V 30A L14-30R · 1 × 120/240V 50A 14-50R · 2 × USB-A 5V 2.1A

Complete specifications

Every useful detail we could verify.

Specifications were compiled from Cummins’ current North American product page and official model spec sheet. Always verify the current manual and exact part number before purchase.

Outdoor use only. Fuel-burning portable generators produce carbon monoxide. Follow the manual and current CPSC placement guidance.

Electrical output

Gasoline output: 9,000W running / 11,000W peak · 75A @ 120V / 37.5A @ 240V running · 91.6A @ 120V / 45.8A @ 240V peak
Propane output: 8,100W running / 10,000W peak · 67.5A @ 120V / 33.8A @ 240V running · 83.3A @ 120V / 41.6A @ 240V peak
Natural gas output: 7,200W running / 8,800W peak · 60A @ 120V / 30A @ 240V running · 73.3A @ 120V / 36.6A @ 240V peak
Voltage / frequency: 120/240V · 60 Hz
Power quality: Built-in inverter · ≤3% THD
Parallel capable: Yes

Engine, fuel & runtime

Engine: 457cc Cummins Onan OHV 4-stroke · Variable
Starting system: Electric, remote, recoil · 98 ft (30 m) remote range
Fuel tank: 7.4 gal (28 L) gasoline
Gas · 25% load: 16.5 hours
Propane · 25% load: 6.7 hours
Oil: SAE 10W-30 · 1.16 qt / 1.1 L
Altitude: Carburetor and fuel-switch kits required above 2,000 ft
Sound: As low as 64 dBA

Connections, safety & portability

AC outlets: 1 duplex GFCI 120V 20A (5-20R) · 1 × 120/240V 30A L14-30R · 1 × 120/240V 50A 14-50R
USB / DC: 2 × USB-A 5V 2.1A
Grounding: Bonded neutral
Transfer-switch ready: Yes
GFCI outlets: Yes
Protection: Automatic low-oil shutdown · Automatic CO shutdown · Circuit-breaker overload protection
Display: Digital: runtime, power, voltage, frequency, fuel, lifetime hours
Dimensions: 30.3 × 25.0 × 27.0 in
Weight: 219 lb dry / 225 lb shipping
Mobility: Lockable cantilevered handle · 8 × 2 in wheels

Ownership details

Part number: A078C500
Availability: United States; not for sale in California
Certification: EPA
Emissions: EPA
Spark arrestor: Yes
Residential warranty: 3-year limited
Commercial warranty: 1 year

Best-fit uses

Home emergency backup
Large RV air conditioners
Large power tools
High-wattage appliances

Standout features

Three selectable fuels
Low-THD 120/240V inverter output
Automatic CO shutdown
50A outlet and transfer-switch readiness

Compatible accessories listed by Cummins

Natural-gas hose kit · Power-distribution cord · Transfer-switch cord · High-altitude kits · Parallel kit · Maintenance kit · Storage and running covers

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Sources:Cummins product page Official specification sheetVerified September 15, 2026

Price & Availability

Compare the whole buying route.

The lowest sticker price is not always the best offer. We rank exact-model seller pages using price, stock, shipping, freshness, returns, and warranty details—then show what is still unknown.

Price and delivered cost

Shipping is included only when the seller publishes a usable amount.

Stock and freshness

Current, low-stock, preorder, and stale records are scored differently.

Purchase protections

Published return and warranty terms improve evidence confidence.

Affiliate-neutral ranking

Commission status is recorded but never adds ranking points.

Watch this model

Save it to your shortlist to retain the current price snapshot and turn price and safety watches on or off.

Best current buying route

Cummins Onan P11000iTF

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Seller options

0 with price

Offer rank

22/100

Relative to listed sellers

Data confidence

30%

5 open fields

Delivered totals

0/1

Shipping included

The only verified seller destination for this exact model. Confirm current price and stock with the seller.

Seller data checked Sep 15, 2026.

Shipping not yet verified.

Open fields: current price, confirmed stock, delivered cost, return window, warranty term.

Prices, local stock, shipping, taxes, installation, and seller terms can change. Confirm the exact model and final checkout total before buying. Affiliate disclosure.

Seller comparison

Every verified exact-model destination.

Browse all priced models

One exact-model seller destination is currently verified. We show the unknown fields so a single listing is never presented as a broad market comparison.

Seller

Price

Stock & shipping

Buyer protection

Confidence

Action

Cummins

Best overall

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Total not available

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Shipping not yet verified

Returns not verified

Warranty not verified

30% complete

Checked Sep 15, 2026

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Cummins

Best overall

Review soon

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Availability: Verify stock
Shipping: Shipping not yet verified
Returns: Not verified
Warranty: Not verified

Verify seller

30% data confidence · checked Sep 15, 2026

Price history

A durable record, starting with verified snapshots.

We preserve each dated seller observation instead of replacing the old number. Trends use the lowest verified listed price on each observation date—not an estimated market price.

Cummins

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Ownership

What living with it looks like.

Ownership requires a safe fuel plan, hour-based engine service, correct storage, and confidence that parts and support are accessible.

Ownership rule

Use the exact Cummins Onan Onan P11000iTF manual for maintenance intervals, fluids, storage limits, and warranty requirements. Similar models are not interchangeable.

Open owner’s manual Manufacturer support

Published warranty

3-year limited

Commercial coverage: 1 year. Confirm eligibility and exclusions before purchase.

Service information

2 official resources

An owner or operator manual is linked below for exact service intervals.

Routine upkeep

SAE 10W-30 · 1.16 qt / 1.1 L

Oil, filters, spark plug, fuel system, and starting battery needs vary by model and hours used.

Handling & storage

219 lb · Gasoline + Propane + Natural gas

Plan a wheeled route, stable storage position, and help for steps or vehicle loading.

Practical care plan

From delivery to long-term readiness

1
Day one
Register and record the exact unit
Save the receipt, serial number, seller, warranty terms, and model-specific manual before packaging is discarded.
2
Before first load
Complete setup and break-in correctly
Add the specified oil, inspect the fuel system, position the generator outdoors, and follow the exact break-in and first-service instructions in the manual.
3
Before every use
Check the safety-critical basics
Check oil level, leaks, cords, outlets, grounding instructions, CO-safe placement, and the transfer equipment needed for any building connection.
4
By hours and season
Log service and keep it outage-ready
Track running hours and perform oil, filter, spark-plug, fuel-system, and starting-battery service at the intervals published for this exact model.

Before you buy

Five ownership questions to settle first

Confirm that 3-year limited applies to your seller, region, and intended use.
Open the official manual for Onan P11000iTF and review setup, service intervals, warnings, and storage requirements.
Verify access to Cummins Onan parts, authorized service, and a practical return path in your area.
Plan approved fuel storage, outdoor operating clearance, weather protection, and safe refueling.
Plan how the 219 lb unit will move over steps, gravel, and door thresholds.

Manuals and compatible accessories Compare seller protections

Evidence

See the proof behind the conclusion.

We separate sourced facts, reproducible calculations, editorial judgments, and missing evidence. That makes every important claim easier to inspect—and harder to overstate.

Published-data coverage

88%documented

7 of 8 relevant evidence fields are documented for this model.

Source-backed editorial analysis—not a hands-on or laboratory test.

Read our evidence standard Explore original market research

Source record

3 traceable sources

Last reviewed Sep 15, 2026

Hands-on testing

Checking ledger…

No manufacturer data is presented as an independent test

Verified owners

Checking reports…

Percentages stay hidden until the sample qualifies

CPSC screening

No model-text match

39 generator recall records screened

88%

Documented fields

Traceable sources

Reproducible calculations

Open evidence gaps

Original calculation

Published surge reserve

2,000W

11,000W peak − 9,000W running

22.22% above rated running output. This is arithmetic headroom, not a promise that every motor load will start.

Original calculation

Rated power density

41.1 running W/lb

9,000W ÷ 219 lb

A catalog-derived portability ratio. It does not account for handles, wheels, shape, or how the weight feels in use.

Original calculation

Strongest class-relative spec

66th percentile

Running output: 9,000W ranked within 65 high output inverter generators

Higher than 66% of its class

Claim-by-claim evidence ledger

Evidence type	Claim	Basis	Trace
Published factSource-backed	9,000W running and 11,000W peak output are recorded for this model.	Model-specific output fields in the catalog.	Official model source
Published factSource-backed	Gasoline + Propane + Natural gas power and 219 lb product weight are recorded.	Published configuration and dimensional data.	Official model source
Original calculationReproducible	Published surge reserve: 2,000W.	11,000W peak − 9,000W running	Calculation standard
Original calculationReproducible	Rated power density: 41.1 running W/lb.	9,000W ÷ 219 lb	Calculation standard
Original calculationReproducible	Strongest class-relative spec: 66th percentile.	Running output: 9,000W ranked within 65 high output inverter generators	Calculation standard
Editorial judgmentEditorial	Competitive in its class for home emergency backup & large rv air conditioners.	Class score 60/100, declared best use, comparative specifications, and explicit buying cautions.	Inspect the score
Editorial judgmentEditorial	At 219 lb, this is a wheeled or placed unit—not a carry-style generator.	Editorial risk check based on product category, weight, output, price availability, and missing fields.	Judgment standard
Open evidence gapCaution	Published price is not sufficiently documented in the current record.	The field remains unknown rather than being inferred from a related model or marketing language.	Not available

Source ledger

Official model source Primary specifications, product identity, and published configuration.Specification sheet Manufacturer performance, electrical, dimensional, and equipment data.CPSC recall search Model-text screening against 39 generator recall records; checked 2026-09-16T02:08:27.514Z.

What this evidence cannot prove

No Find My Generator hands-on test, instrumented load test, teardown, or long-term ownership trial is claimed for this page.
Manufacturer specifications may use different fuels, loads, test distances, temperatures, or operating modes. Cross-brand comparisons inherit those differences.
A reliable public price was not available, so price-efficiency analysis is excluded.
Published price is missing and receives no invented or estimated value.

Deeper analysis

Open the details you need

The key decision is above. These supporting scorecards, owner signals, and evidence notes stay out of the way until you want to inspect them.

Fit and score detailsSee the class benchmarks and personalize the fit score for your needs.

Find My Generator score

60/ 100

Competitive in its class

Compared with 65 high output inverter generators in the current catalog.

Power65

Running and peak output versus the class

Portability29

Lower weight scores higher

Quietness62

Lower published dBA scores higher

Fuel flexibility90

Multiple fuel choices

Class comparison

See what each spec really means.

A number is more useful with context. Each row shows this model beside its class median and translates the difference into a percentile.

SpecificationThis modelClass medianClass standing

Running output

Higher than 66% of its class

This model · 9,000W

Median · 8,300W

Higher than 66% of its class

Peak output

Higher than 63% of its class

This model · 11,000W

Median · 10,500W

Higher than 63% of its class

Product weight

Lighter than 29% of its class

This model · 219 lb

Median · 207 lb

Lighter than 29% of its class

Published sound level

Quieter than 62% of its class

This model · 64 dBA

Median · 64.3 dBA

Quieter than 62% of its class

How the score works: Scores use published specs and are relative to comparable products in this catalog. Missing specs are excluded and remaining weights are normalized. Runtime is the longest manufacturer-published figure and may use a different load or fuel than another model.

Size a generator for your own appliances

Starter Fit Score

78/ 100

Good fit

For a 3,000W target and a $1,500 budget.

Clears your critical profile limits

Why it scored this way

A score you can inspect and change.

This personal score is separate from the model’s class score. It measures fit against your priorities and gives neutral partial credit when price or noise data is missing.

Power fit

29.3/35

Clears your 3,000W running target.

Budget fit

11/20

Price is not published; confirm the current offer.

Fuel fit

15/15

Gasoline + Propane + Natural gas works with your flexible fuel preference.

Portability

4.5/10

219 lb against your medium portability priority.

Noise fit

8/10

64 dBA against your medium quietness priority.

Use-case fit

10/10

Home-backup fit rewards adequate output and fuel flexibility.

Tune my profile

Testing, reviews and evidenceCheck hands-on testing status, owner reliability signals, sources, and data confidence.

Checking the hands-on test ledger…

Testing protocol

The methods behind every result.

This category-specific protocol defines the questions, equipment, conditions, outputs, and safety gates required for this exact model. Published specifications stay visibly separate from hands-on measurements.

Open the hands-on test ledger Read the full test protocol Download measurement worksheet

Manufacturer-published baselines

Rated running output

9,000W

Published

Peak / starting output

11,000W

Published

Product weight

219 lb

Published

Published sound level

64 dBA

Pending

How consistently does the unit start under documented conditions?

Follow the manual exactly and record three ambient-temperature starts plus three heat-soaked restarts. Report attempts, elapsed time, start method, battery state, and any intervention.

Attempts per startStart timeAmbient temperatureStart method

Controlled conditions

Record the exact model, serial number, firmware, sample source, and test date before any measurement.
Log ambient temperature, humidity, elevation, wind, surface, and background sound for every test block.
Record instrument model, range, accuracy, and most recent calibration or verification date.
Repeat timing, starting, and sound measurements three times when conditions allow; publish every valid run.
Keep original notes, load logs, meter exports, photos, and any excluded-run explanation with the result.

Required equipment class

Rated resistive or programmable load bank
True-RMS power, voltage, and frequency logger
Calibrated Class 1 or Class 2 sound-level meter
Approved fuel-measurement equipment and fire protection
Weather meter, timer, tachometer, and non-contact thermometer

Safety gate

Operate fuel-burning equipment outdoors only, far from occupied structures, openings, and ignition hazards, with working carbon-monoxide monitoring for personnel.

Testing is for qualified personnel using correctly rated load equipment and the manufacturer’s required grounding, bonding, clearance, and protective-device instructions.

Never connect a generator directly to building wiring or bypass overload, temperature, battery, GFCI, or carbon-monoxide shutdown protection.

Stop a run for unstable voltage or frequency, overheating, fuel or electrolyte leakage, abnormal sound, damaged wiring, or any manufacturer fault indication.

Badge rule: this product receives no “FMG Tested” label or score benefit until a real unit, instruments, conditions, valid runs, raw records, and limitations are documented under the public protocol.

Verified owner reliability

What happens after the honeymoon period?

Long-term reports from confirmed owners show starting, maintenance, failure, support, and recommendation outcomes for the Cummins Onan Onan P11000iTF.

See how ownership is verified

Verified owners only

Be the first confirmed owner to report back.

Checking reports…

Reliability percentages stay hidden until at least 5 ownership-verified reports are published for this exact model — 5 more needed.

Ownership checked

Purchase or registration evidence is reviewed privately.

Time in service

Reports separate new ownership from 12+ month experience.

Failures documented

Repairs and maintenance are captured, not buried in a star.

Reports stay private while ownership and model details are checked. Contact information is never shown publicly.

Data trust & safety

Fresh specifications. Visible recall checks.

We show when this record was verified, where its specifications came from, and whether its model number appears in the official CPSC generator-recall dataset.

Review soon

Specification freshness

Last verified: Sep 15, 2026
Review target: Oct 15, 2026
Primary source: Manufacturer / official listing

Prices can change faster than technical specifications. Always confirm the current price, exact model number, and manual before purchase.

CPSC model screening

No model-number match found

39 records checked

The Cummins Onan Onan P11000iTF model text did not match the generator recall records in our current CPSC snapshot. This is a screening result, not a guarantee or safety certification. Recalls can be serial-number specific, newly published, or use a different product description.

Search CPSC directly Dataset checked Sep 16, 2026

Research owner

Andrew Petla

Founder & lead researcher

Editorial sign-off

Find My Generator Editorial Review

Accountable editor: Andrew Petla

Review scope: exact model identity, published specifications, calculation inputs, source quality, safety language, and affiliate independence. This is an internal editorial review, not third-party engineering, electrical, or safety certification. Hands-on testing is claimed only when a complete test record is published.Request a correction.

Read the full data methodology

Onan P11000iTF

Competitive in its class for home emergency backup & large rv air conditioners.

The numbers that drive the decision.

The numbers, made scannable.

Every useful detail we could verify.

Electrical output

Engine, fuel & runtime

Connections, safety & portability

Ownership details

Does this model fit your load?

Compare the whole buying route.

Cummins Onan P11000iTF

Every verified exact-model destination.

A durable record, starting with verified snapshots.

What living with it looks like.

From delivery to long-term readiness

Register and record the exact unit

Complete setup and break-in correctly

Check the safety-critical basics

Log service and keep it outage-ready

Five ownership questions to settle first

See the proof behind the conclusion.

Accessories, manuals, and documents.

Match by model and connection.

Generator power cord or inlet connection

Parallel kit

Maintenance kit and service parts

Storage cover or approved running shelter

Official product materials.

Open the details you need

See what each spec really means.

A score you can inspect and change.

Power fit

Budget fit

Fuel fit

Portability

Noise fit

Use-case fit

The methods behind every result.

Questions the measurements must answer.

Continuous output & regulation

Starting-load response

Fuel use & runtime

Sound profile

Cold & hot starting

What happens after the honeymoon period?

Be the first confirmed owner to report back.

Ownership checked

Time in service

Failures documented

Fresh specifications. Visible recall checks.

Specification freshness

No model-number match found

Keep the decision moving.

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