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DuroMax XP4500iH - 3600/4500W Dual Fuel Inverter Generator

The DuroMax XP4500iH is a portable dual fuel inverter generator with a rated wattage of 3600 W and a starting wattage of 4500 W.

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Picture of the DuroMax XP4500iH
Note: The XP4500iH was recently upgraded to include a CO sensor. Some of the retailers below may still sell the old version.
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Description

Zoom on the DuroMax XP4500iH

In a nutshell, the DuroMax XP4500iH is a portable inverter generator mostly geared towards:

  • RV travellers who wish to upgrade their experience to another level
  • Occasional participants of outdoor events, competitions, concerts and festivals
  • Homeowners who want to be able to use the most necessary devices in their household, even during a blackout
  • Tailgating and campground aficionados with the desire of enjoying power anywhere they go
  • Professionals who want to be able to deliver results, even during a power failure

The following sections will present you in detail its power characteristics, the different outlets it offers, its overall portability, the extra features it benefits from, and any relevant emission compliance details.

Power & Run Time

The DuroMax XP4500iH in use

The DuroMax XP4500iH

With its dual-fuel technology, the powerful and versatile DuroMax XP4500iH provides an output of 120V. While gasoline-powered, it gives a running wattage of 3600W along with a peak wattage of 4500W. While propane-powered, it provides 3420 rated watts and 4275 starting watts. In addition, the device is parallel capable (XP4500iH-PK parallel kit (opens in a new tab) not included) and thus, can be linked to a similar or compatible unit for added power.

DuroMax’s Switch On Demand technology allows you to switch from propane to gasoline or from gasoline to propane while the generator is running.

With a noise rating of 65 dBA (just slightly more noisy than background music), the inverter generator features a conventional pull-start mechanism, but also a convenient and easy-to-use electric starter (battery included). The XP4500iH can also be remotely started, offering further convenience (key fob included).

Regarding its running time, the XP4500iH, with a 2.64 gallons fuel capacity can operate for up to 16 hours with a full tank of gasoline (fuel consumption around 0.17 GPH). When using propane, it can run for up to 19 hours (on a 20 lbs tank - propane consumption around 0.25 GPH).

As the XP4500iH produces a clean sine wave, with a <3% Total Harmonic Disruption (THD), sensitive electronics may be plugged in the AC outlets safely.

Outlets

The control panel features the following 3 AC outlets:

Duplex 120V 20A (5-20R) GFCI
120V 30A (TT-30R) receptacle

In addition, it provides 2 DC outlets: there's two 5V USB ports (1 x USB-A and 1 x USB-C) with which charging of electronics like mobile phones and tablets is made convenient.

This DuroMax generator is RV Ready, as it features a TT-30R receptacle (TT stands for 'Travel Trailer').

Portability

Thanks to its closed inverter generator design (L24 x W19 x H22 in), the DuroMax XP4500iH, is more esthetical than a typical, open frame generator. This type of design is the most modern and convenient way to recreationally generate power.

Since the generator weighs 115 lbs, it will be incredibly difficult to manually lift it and transport it, even though it is technically considered to 'be portable' (in the sense that it is movable). Nevertheless, thanks to its set of 2 wheels (⌀4.5") and its telecospic handle (a decent solution to its lack of maneuverability), the generator can be easily moved, once placed the ground.

Features

Panel of the DuroMax XP4500iH

The XP4500iH's control panel

One of the many XP4500iH's features is the data center, included in its control panel, which conveniently provides information on the voltage, power output, frequency, lifetime run hours and fuel level and thus, helps you monitor its activity and status.

In addition to this info, several light indicators serve to show you when the oil level is too low, the generator is on overload and the generator is ready.

A built-in fuel gauge allows for a quick, easy and convenient check of the fuel level of the inverter generator.

From a security standpoint, the product offers an overload protection (circuit breaker) and an automatic low oil shut-off, allowing you to use it with a peace of mind.

The XP4500iH also benefits from DuroMax’s CO Alert carbon monoxide shutdown. If CO levels become unsafe or rapidly increase, the generator will automatically shut down, an indicator will light red, and the engine will not restart for 5 minutes. It’s a welcomed additional security feature, but don’t forget to always take your generator outside (opens in a new tab).

With the basic documentation and an owner's manual (opens in a new tab), letting you start the generator quickly, the DuroMax XP4500iH also comes with several accessories, including: tool kit, propane hose, key fob, battery charger and funnel.

Emissions

The DuroMax XP4500iH is EPA-approved and CARB-compliant. Therefore, its sale and purchase are permitted in all of the 50 states, including California.

Moreover, it features a spark arrestor, so it is adequate for use in forested areas.

Product Videos

The DuroMax XP4500iH versus other generators

The following charts are provided to give you an idea of how some of the key specs of the DuroMax XP4500iH compare to inverter generators of similar power (between 3500 and 4500 W).

  • With a dry weight of 115 pounds, the DuroMax XP4500iH finds itself in the expected weight range for inverter generators able to produce between 3500 and 4500 rated watts. If weight matters to you, one of the champions in this power range is the WEN GN400i with only 66.1 pounds.
  • As this inverter generator has its lowest possible noise of 65 dBA, it should be considered noisier compared to its peers of a comparable running wattage. If you are concerned with noise, check out the Cummins Onan P4500i, which is one of the least noisy generators in its power range, with a noise rating of just 52 dBA.
  • Given that the XP4500iH reaches an autonomy of up to 16 hours with a full tank and at 25% load, it is placed within the average autonomy range of similarly powerful inverter generators. Furthermore, considering the run times, one of the generators which have a roughly same power output, with the highest autonomy, is the Firman W03661OF, as it provides up to 25 hours.
  • Autonomy holds its importance, however, it is largely dependent on the generator’s fuel capacity and so, it is nonsensible to discuss it without mentioning fuel efficiency as well. With an estimated gasoline consumption of 0.17 GPH (gallon per hour) at 25% load, this inverter generator is among the more fuel efficient of the products in the above-mentioned wattage range. If you wish to acquire one of the most gasoline efficient products of this power range, the Champion 200988, with a fuel consumption of 0.16 GPH could be in your good books.

Price comparison

As you can see from this interactive chart, when compared to other 3500-4500W dual fuel inverter generators, the DuroMax XP4500iH is on the expensive side of the price range.

While certainly not the cheapest of its kind, purchasing it would most likely also mean enjoying the reliability of a high-end product.

The bottom line

STRENGTHS:
  • CO Alert technology
  • Several accessories included
  • GFCI Outlets
  • USB-C port
  • RV Ready
  • Remote start
  • Parallel capable
  • Dual Fuel
  • Switch On Demand technology
  • Inverter
  • Fuel efficient
AVERAGE SPECS:
  • Decent weight (115 lbs)
  • Decent run time
WEAKNESSES:
  • On the expensive side
  • On the noisy side (65 dBA)

Do you own the DuroMax XP4500iH and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Features and Specifications

General
InverterYes
PortableYes
Parallel capableYes, cable not included
RV readyYes
FuelDual Fuel (gasoline/propane)
Engine223 cc OHV 4-stroke
Starting systemRecoil, Electric, Remote
VoltageAC: 120V 60 Hz, DC: 5V
Power
 GasolinePropane
Running watts3600 W3420 W
Starting watts4500 W4275 W
Running amps30 amps28.5 amps
Peak amps37.5 amps35.6 amps
Run time @50% load8 h11 h
Run time @25% load16 h19 h
Features
GFCI outletsYes
Covered outletsYes
Automatic Voltage RegulationInverter
AC outlets
  • 1x Duplex 120V 20A (5-20R) GFCI
  • 1x 120V 30A (TT-30R)
DC outlets2x 5V USB port (USB-A and USB-C)
Data centerPower output, fuel level, lifetime run hours, voltage and frequency
IndicatorsLow oil, overload and output ready
Fuel tank2.64 gal
Fuel gaugeYes
Misc
Weight115 lbs
Approx. dimensions (L x W x H)24 x 19 x 22 in
Noise (lower limit)65 dBA
THD< 3%
ComplianceCARB, EPA
SecurityLow oil and overload protection, CO monitoring
Spark arrestorYes
NeutralBonded to frame
Accessories includedFunnel, tool kit, key fob, battery charger, propane hose, and battery
Warranty3 years
UPC811640016401

Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue.

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About DuroMax

Duromax is a small, American based power equipment company, with headquarters in Ontario, California. Duromax specializes in several products, including pumps, engines, pressure washers, and most importantly, power generators. In this regard, the company focuses solely on portable generators, of mostly small and medium power outputs, and dual fuel devices. Duromax’s generators are designed and serviced in the US, however, their production is outsourced overseas. Founded in 2003, DuroMax starts to be seen as an important player in the power generator market.

Warranty Information

The DuroMax XP4500iH is covered under a warranty for up to 3 years. This warranty may be limited and may not cover all parts of the generator.
For more information about the warranty of DuroMax generators, please consult DuroMax's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-844-DUROMAX (844-387-6629).

Questions & Answers

What can it power?
Examples of items that can be simultaneously powered.
The examples below are based on a maximum load of 80% and estimated wattages. For a more accurate estimation, use our generator sizing calculator.
ItemRunning WattsStarting Watts
At homeElectric fry pan15001500
Refrigerator (energy star)1921192
Vacuum cleaner10751175
Radio100100
Total2867 W3867 W
For campingRV AC (11,000 BTU)10101600
RV refrigerator180600
Electric grill16501650
Cell phone charger2020
Total2860 W3450 W
For workGrinder14002500
Demolition hammer12601260
Bug zapper8080
Total2740 W3840 W

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DuroMax XP4500iH
7.6 Total Score
2 reviews
Add your review
Price
6.5
Value
7.5
Quality
9
Performance
7.5

User Reviews

Most Recent Most Helpful Highest Rating Lowest Rating Add your review
  1. 3.75
    Price
    70
    Value
    80
    Quality
    100
    Performance
    50

    The battery was died and could not charge it up. Would not start on propane using pull start. Sending unit back for exchange.

    + PROS:
    • Nice design
    - CONS:
    • Adding oil very hard
    Helpful(0) Unhelpful(1)You have already voted this
  2. 3.9
    Price
    60
    Value
    70
    Quality
    80
    Performance
    100

    I recently install a 20kw Kohler genset at my home on the Washington coast. While that unit will fulfill all our needs it’s very thirsty, very thirsty.
    So I purchased the xp4500ih to power our entertainment system, internet, fridge and a couple led lights for extended periods. This way the Kohler can stand by to handle the big stuff like cooking, laundry & bath time.
    What attracted me to the Duromax the design. I really like the display for the information center. It’s a nice bright vivid display and it shows voltage hertz’s wattage & hours. It also integrates a fuel gauge so you’re not having to remove the gas cap and shine a flashlight to see your gas level.
    Also, I like the independent controls.
    Ignition, gas valve, fuel selector and start/stop switch. To me the ability to shut off the fuel flow and run the carburetor dry is an important feature especially when running 10% alcohol fuel.
    Another feature I appreciate is the battery maintainer jack on the front panel and included 12v trickle charger.
    When the powers back on this unit is quick & easy to put away properly, shut off the gas and let the carb run dry then plug in the battery tender, that’s about it.
    For camping or RVing the remote fob start would be invaluable especially when it’s cold dark & stormy. I have tested the remote start feature but haven’t had and need to use it in practice yet.
    The primary reason I chose a unit that runs on propane is the storage issue. Gasoline goes bad, 10% ethanol gas goes bad even faster but I can keep a couple 30lb LP tanks at the ready almost indefinitely not to mention longer run times.
    The overall design and attention to detail is quite good but there is a couple areas where improvement could be made.
    First is the weight, fueled up it’s a two person lift. Unless you’re big young and strong you’ll probably strain your gizzard trying to lift this into a pickup. Get a ramp and a helper.
    Second is oil changes. Many generators now include a oil drain tube with a valve or cap that makes maintenance time a no mess operation. Unfortunately this model forces you to elevate the unit and drain thru an opening in the bottom.
    This is a issue I’m dealing with soon by retrofitting my own system.
    The next comment is more of a convenience issue. I’d like to have a quick connect for the propane hose, several other manufacturers have included this in their design and not having to mess around with a wrench on a dark rainy night would be a big plus.
    Price could be another point of contention for some but really for the features this unit offers I really think it’s still a good value.
    At this moment the only question I have is durability and only time will tell but I went above and beyond with the break in process & am diligent with maintenance so hopefully I’ll get years of service.
    One last thing. I can’t for the life of me find a parts list and diagram for this product or any Duromax product. I do my own maintenance and it unsettles me just a bit that there’s no service or parts manuals readily available.

    + PROS:
    • 2x20Amp GFI outlets
    • 30Amp RV plug
    • Remote start
    • Wattage & Fuel on display
    • Separate controls(fuel)(ignition)(start)
    • Battery maintainer
    • Switch on fly fuel selector
    • No tool access panel
    • Very quiet
    • Overall, feature rich
    - CONS:
    • Heavier than most in class
    • Clumsy oil drain process
    • Modest gasoline capacity
    • Threaded LP connection
    • Parts/Service diagram not readily available.
    • Not for novice user.
    Helpful(2) Unhelpful(0)You have already voted this

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