Zoom on the Generac XT8500EFI
In a nutshell, the Generac XT8500EFI is a powerful portable generator mostly geared towards:
- Homeowners in need of an emergency backup power for their essentials
- Professionals who want to ensure that a power failure will not prevent them from working
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 Generac XT8500EFI houses a 459 cc Generac OHV 4-stroke engine, which provides 120/240V, consumes gasoline and delivers a running wattage of 8500W along with a peak wattage of 10000W.
This generator can be started via a simple traditional pull-start mechanism, or a simple and elegant electric starter (battery included).
The Electronic Fuel Injection (EFI) system enhances the engine's reliability, lowers fuel consumption, improves startup, reduces servicing, boosts stale fuel resistance, and offers better altitude adaptability.
With a full tank, the XT8500EFI can operate for around 9 hours at 50% load (fuel consumption around 0.89 GPH), thanks to its fuel capacity of 8 gallons.
Delicate electronics can be plugged in an AC outlets safely, as the XT8500EFI generates a clean sine wave, reaching a <5% Total Harmonic Disruption (THD).
The control panel features the following 5 AC outlets:
Since the XT8500EFI bears a twist-lock L14-30R receptacle, it is transfer switch ready: it is easily connectible to a breaker box and can power your home in case of a power outage.
The Generac XT8500EFI has the following dimensions: L31.4 x W20.5 x H26.5 in. In combination with its conventional, open frame design, they provide support and allow the generator to be raised above ground level. The generator is designed for ideal use outdoors and in rough environments.
Since the generator weighs 214 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 wheel kit (⌀9.5") and its folding handle (a decent solution to its lack of maneuverability), the generator can be easily moved, once placed the ground.
Monitoring of the XT8500EFI's status and activity is made possible by a digital data center, which provides information on the lifetime run hours and is one of the features of its control panel.
The fuel level of the generator can be determined quickly, easily, and conveniently with the help of its built-in fuel gauge.
Security-wise, this product benefits from an overload protection (circuit breaker) and an automatic low oil shut-off, which gives you a complete peace of mind when using it.
The XT8500EFI also benefits from Generac’s COsense® carbon monoxide monitoring. This technology senses and manages CO output and shuts down the unit when necessary, to minitgate CO poisoning. It’s a welcomed additional security feature, but don’t forget to always take your generator outside (opens in a new tab).
While the standard documentation and an owner's manual (opens in a new tab), helpful for starting the device promptly, come with the Generac XT8500EFI, the following accessories are also included: funnel, oil and battery charger.
The Generac XT8500EFI 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 and therefore, can be used in forested areas.
The Generac XT8500EFI versus other generators
The following charts are provided to give you an idea of how some of the key specs of the Generac XT8500EFI compare to generators of similar power (between 8000 and 9000 W).
- With a dry weight of 214 pounds, the Generac XT8500EFI finds itself in the expected weight range for generators able to produce between 8000 and 9000 rated watts. If weight matters to you, one of the champions in this power range is the Dewalt DXGNR8000 with only 183 pounds.
- As far as autonomy is concerned, providing around 9 hours of runtime with a full tank at a 50% load, the XT8500EFI falls into the low end in comparison with other devices of a comparable power output. If you consider autonomy on a single full tank as one of the deciding factors, one of the generators in the same power range that offers the highest run time is the Champion 100416, with around 12.5 hours.
- While the run time is an important parameter, it is dependent on the fuel tank’s capacity and thus, doesn’t say much on its own unless we consider fuel consumption as well. This generator is somewhat less fuel efficient than devices of comparable output: its estimated fuel consumption reaches 0.89 GPH at a 50% load. If not satisfied with the afore-mentioned fuel consumption, you may wish to check out the Westinghouse WPro8500. With a fuel consumption of as little as 0.55 GPH, it is one of the most efficient generators currently on the market.
As you can see from this interactive chart, when compared to other 8000-9000W generators, the Generac XT8500EFI is on the cheap side of the price range.
It can therefore be a really good buy if you're looking to acquire a budget generator.
The bottom line
- COsense® technology
- Several accessories included
- GFCI Outlets
- Electric start
- Clean sine wave
- Electronic Fuel Injection
- Decent weight (214 lbs)
- No remote start
- Relatively low run time
- Low fuel efficiency
Features and Specifications
|Engine||459 cc Generac OHV 4-stroke|
|Starting system||Recoil, Electric|
|Voltage||AC: 120/240V 60 Hz|
|Running watts||8500 W|
|Starting watts||10000 W|
|Running amps (@120/240V)||70.8/35.4 amps|
|Peak amps (@120/240V)||83.3/41.7 amps|
|Run time @50% load||9 h|
|Run time @25% load||Unknown|
|Automatic Voltage Regulation||Yes|
|AC outlets|| |
|Data center||Lifetime run hours|
|Fuel tank||Steel, 8 gal|
|Approx. dimensions (L x W x H)||31.4 x 20.5 x 26.5 in|
|Noise (lower limit)||Unknown|
|Security||Low oil and overload protection, CO monitoring|
|Neutral||Bonded to frame|
|Accessories included||Oil, funnel, battery charger, battery, and wheel kit|
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.
Generac Power Systems is an American based generator and power equipment manufacturer, founded in 1959. As its name suggests, the main focus of Generac are power generators, and other related electric equipment, such as switches, paralleling systems and small engines. The company has several manufacturing facilities based in the US, thus, their products are made in the USA. However, the company provides no information about the origin of their components.
The Generac XT8500EFI 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 Generac generators, please consult Generac's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-888-GENERAC (888-436-3722).
Questions & Answers
What can it power?
|Item||Running Watts||Starting Watts|
|At home||Sump pump (1/2 hp)||1050||2150|
|Furnace fan (1/2 hp)||875||2350|
|Refrigerator (energy star)||192||1192|
|Cell phone charger||20||20|
|Total||6787 W||8262 W|
|For camping||Radiant heater||1300||1300|
|Electric fry pan||1500||1500|
|Total||6780 W||7200 W|
|For work||Table saw||1800||4500|
|Air compressor (1 hp)||1600||6100|
|Total||5480 W||9980 W|
What is the noise rating of the XT8500EFI?
Due to the lack of standardization in noise emission measurement, Generac does not provide their units' noise levels.
Hi. Does the battery need a charge in order to run the fuel injection system? Will it run without the battery??? (Asked July 15, 2020)
The battery does need a charge for the fuel pump and electronics to run. If the charge is not sufficient, the EFI fault indicator light will flash and the generator will not start.
Can the xt8500efi be connected to a transfer box to power a gas home furnace/AC? (Asked August 05, 2020)
It absolutely can. Best way would be through Generac's HomeLink transfer switch (opens in a new tab), but a licensed electrician should be able to do the connection to your existing transfer box.
The instructions and everywhere else I read say to change the oil filter. Where is the oil filter? (Asked September 30, 2020)
It is located near the dipstick. Look page 5 of the owner's manual. Make sure to check the PDF version (opens in a new tab), as it will allow you to zoom in.
Which Genertor cord should be used with XT8500EFI ? What should be the Amperage and gauge of the cord? (Asked October 18, 2020)
Does the Generac XT8500EFI automatically charge the starting battery used for it's electric starting system? If so, do I still have to employ a trickle charger when the generator is not in use?? (Asked October 24, 2020)
Running the generator automatically charges the battery. However, the engine will not start if there's not at least 10V at the battery connections, which can happen if the unit is left unused for too long. In that case, you'll need the trickle charger.
Given the aforementioned issues with the battery, can you simply use the pull cord to start it and then allow it to self charge or will it not start at all if the battery isn’t charged? (Asked November 01, 2020)
The unit cannot run if the battery isn't charged. The EFI engine contains electronics that need power from the battery in order to operate.
What is the life span of the generator? (Asked November 15, 2020)
Life expectancy of any generator is dependent on maintenance, conditions of operation, and overall care it receives.
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