Zoom on the Generac XT8500EFI
In summary, the Generac XT8500EFI is a powerful portable generator especially useful for:
- Homeowners who want to be sure of their ability to power their fridges, cooking tools, heating and lighting equipment during power failures
- Professionals who want to be able to deliver results, even during a power failure
Power & Run Time
The Generac XT8500EFI's engine, 459 cc Generac OHV 4-stroke, fueled by gasoline, can deliver 120/240V. It provides a running wattage of 8,500W and reaches a peak wattage of 10,000W.
This generator can be started thanks to a conventional pull-start mechanism, but also to a convenient and easy-to-use 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.
The XT8500EFI produces a clean sine wave: thanks to a <5% Total Harmonic Distortion (THD), your sensitive electronics can be safely plugged in the AC outlets.
The control panel features the following 5 AC outlets:
Because the XT8500EFI is equipped with a twist-lock L14-30R receptacle, it is transfer switch ready: it can power your home during a power outage, as it can be easily connected to your breaker box to power your household.
With its dimensions of L31.4 x W20.5 x H26.5 in, the conventional, open frame design of the Generac XT8500EFI offers stability and allows the generator to be raised above ground level. The featured design is ideal for the outdoors and all tough environments.
Although this generator is technically considered 'portable' (in the sense that it can be moved), its 214 lbs make it incredibly difficult to manually lift and transport. Still, once it is on the ground, its wheel kit (⌀9.5") and its folding handle can easily solve the issue of low mobility and allow for easy relocation of the device.
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 generator allows for a quick, easy and convenient assessment of its gas level, as it is equipped with a built-in fuel gauge.
From a security standpoint, the product offers an automatic low oil shut-off and an overload protection (circuit breaker), allowing you to use it with a peace of mind.
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 protect you from CO poisoning.
Along the basic documentation and an owner's manual (opens in a new tab), useful for starting the generator right away, the Generac XT8500EFI's package also includes these accessories: battery charger, oil and funnel.
The Generac XT8500EFI is EPA-approved and CARB-compliant. It can therefore be sold and purchased in all 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.
- Autonomy-wise, with around 9 hours on a full tank at a 50% load, the XT8500EFI is on the low end when compared to other generators of a similar power output. If autonomy is your priority, one of the devices of a similar power output with the highest run time is the Champion 100416, reaching around 12.5 hours.
- Run times are important, yet thanks to their dependence on the fuel capacity, they should be judged along with the fuel consumption of the device. This generator is not fuel efficient compared to devices of similar output: its estimated fuel consumption stands at 0.89 GPH at a 50% load. If you are concerned with gasoline efficiency, having a fuel consumption of just 0.55 GPH, the Pulsar PG10000B16 is a device you could look out for.
Here's a list of the most popular specific comparisons:
As you can see from this interactive chart, when compared to other 8000-9000W generators, the Generac XT8500EFI is on the average side of the price range.
Therefore, this generator nicely fits in the expected budget for this kind of product.
The bottom line
- In the expected price range
- COsense® technology
- Several accessories included
- GFCI Outlets
- Electric start
- Clean sine wave
- Electronic Fuel Injection
- Decent weight (214 lbs)
- No 50-amp output
- 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||8,500 W|
|Starting watts||10,000 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|
|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 engineered and built in the USA. However, their components can be a mix of domestic and foreign parts.
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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