Generac 8251 GP2500i 2,500-Watt Gas Powered Portable Inverter Generator - Compact and Lightweight Design - Produces Clean, St

4.5 4.5 out of 5 stars | 991 ratings

Price: 679

Last update: 01-05-2025


About this item

Portable Power Solution: The GP2500i inverter generator is your go-to portable power source for outdoor adventures, from camping trips to tailgating events, ensuring stable power without disturbing your surroundings
High Quality and Consistent Power: With TruePower Technology, this generator delivers clean power that's safe for sensitive electronics, tools, and appliances, so you can stay connected even in the great outdoors
Compact and Lightweight: Designed for easy transportation this Generac generator, complete with a built-in handle, is lightweight and compact built, making it a breeze to move and set up wherever you need it
Fuel-Efficient and Quiet: Activate Economy Mode to automatically adjust engine speeds, reducing fuel consumption and noise emissions. COsense Technology stops, alerts, saves, powerful protection against hazardous carbon monoxide
Smart and Reliable: Equipped with LED indicators for low oil, overloaded, and ready-to-use. Featuring a USB port for device charging, and parallel-ready capability for doubling your power output, this generator is a versatile and dependable choice

Product information


Top reviews from the United States

  • Amazon Customer
    5.0 out of 5 stars Puuuurs Like A Kitten
    Reviewed in the United States on November 18, 2024
    I've wanted a Honda generator forever since I used to work with them at my job. When I was shopping for one on Amazon, I came across this generator. I knew it was a solid brand but I wondered if I could get away with purchasing this brand instead. The price difference was substantial and the reviews for this Generac were great. Man, I have been running this thing just for fun. It's soooo quiet. I used it to paint my fence which was far away from my power back at the house. It allowed me to plug the paint sprayer into it and it ran like a champ. I no longer use multiple extension cords. I plug one extension cord into the Generac and then swap my tools out as I need them. It's incredibly quiet and very fuel efficient. I don't feel like this machine exceeded my expectations and I'm glad I didn't spend that extra money on a Honda. This Generac will last me forever. *As always, be sure to put oil in it prior to using.
  • J M
    5.0 out of 5 stars Excellent Generator
    Reviewed in the United States on December 27, 2022
    I own a Honda EU2000 which cost $1200 and love it but I wanted a 3500 and didnt want to spend $2000+.

    So I bought a Generac 3500iO last year, used it on my farm that does not have electric and it worked great. Strong generator. I put it in storage for a year in 2021, then came back to my farm in 2022. Filled it with fuel, and it started easily on the 2nd pull. I put about 10 hours on it this year and still works perfect and starts very easy. Love it just as much as my Honda so far. And its very quiet, super pleased with this product. Its easy to carry with the medal frame. Love it. I like the open frame so that the engine gets plenty of air and runs cool. Perfect balance and design and function.

    So I just ordered a 2nd so I can run parallel for more power when needed.

    Highly Recommended. 2 generators for twice the power and half the price. This is the only brand I could take a chance on other then Honda. Generac did a great job with this model.
  • Amazon Customer
    5.0 out of 5 stars Very Quiet!
    Reviewed in the United States on October 27, 2024
    The media could not be loaded.
    I have a van I converted to a camper. Every now and again I like to go where power isnt avail. This generator is quiet even under a full load. In the video I turned on everything for a full power test. The window A/C is on high, electric heater on high, lights on (led) and fridge running. Its under a full load and you can stand right next to it and have a conversation. Seems well built, easy to start, and maint access is very easy to get to.
    Customer image
    Amazon Customer
    5.0 out of 5 stars Very Quiet!
    Reviewed in the United States on October 27, 2024
    I have a van I converted to a camper. Every now and again I like to go where power isnt avail. This generator is quiet even under a full load. In the video I turned on everything for a full power test. The window A/C is on high, electric heater on high, lights on (led) and fridge running. Its under a full load and you can stand right next to it and have a conversation. Seems well built, easy to start, and maint access is very easy to get to.
    Images in this review
    Customer image
  • Amazon Customer
    4.0 out of 5 stars Quite
    Reviewed in the United States on November 15, 2024
    This little generator works well. Powerful. Quiet. Starts on the first or second pull. Much less expensive than the Honda.
  • C Bodhi
    5.0 out of 5 stars Started right up super easy, runs my space heater
    Reviewed in the United States on July 31, 2024
    I put oil and gas in it and went to pull the cord and ended up getting a bad grip on it so it kinda slipped out my hand but just that little half pull on the very first start up and this thing fires up and was running. I grabbed my 1800w space heater and it ran that no problem and then I grabbed a hair dryer and that was no problem. Efficiency mode is quiet. I've randomly started it a few times since just cause I almost can't believe how easy it is to start and it cranks right up. Costumer service is good too, I called them before purchasing to make sure it'd power my space heater and they told me it would and then I called back with another question about the Co sensor and they answered that too. I'm very pleased
  • Ashley Barillas
    1.0 out of 5 stars Beware: Generac's GP2500i Inverter Generator Warranty Nightmare
    Reviewed in the United States on March 17, 2024
    Our company, a respected establishment in Downtown Chicago with a remarkable 4.8-star rating from hundreds of satisfied customers, has long relied on Generac equipment. Despite our confidence in the brand, our recent experience with the GP2500i inverter generators has been a profound disappointment, exposing serious flaws in Generac's warranty system and customer support.

    Unprecedented Maintenance Issues:

    Investing over $700 per unit, with multiple generators on each of our trucks, we expected impeccable quality and service commensurate with our investment. However, two of our GP2500i generators began experiencing problems just months after purchase, despite meticulous maintenance by our in-house technicians, following Generac's recommended procedures to the letter.

    Generac's warranty department proved utterly ineffective, offering no solutions beyond directing us to service repair dealers who repeatedly refused to honor the warranty. It wasn't until January, after weeks of frustration and wasted time, that we finally secured promises of replacements from Kristin D. Yet, even this proved to be another ordeal.

    Endless Trips for Failed Repairs:

    In February alone, we endured four roundtrip journeys totaling over 200 miles to the repair facility, all in vain attempts to rectify the persistent issues plaguing our generators. Despite clear documentation and undeniable evidence of malfunction, Generac failed to resolve the matter or provide any meaningful support.

    Public Exposition of Warranty Breakdown:

    The gravity of our situation was underscored when a prominent figure and their company documented the malfunctioning generator in a video posted online. This public exposure should have prompted swift action, yet our contacts at Generac, Kathy F. and Candace M., offered only empty assurances. Even with widespread attention and pressure mounting, Generac remained unresponsive.

    A Plea to Potential Buyers:

    It's inconceivable that a product priced at over $700 each should bring such frustration and disappointment. As a reputable establishment, we expected better treatment and support from Generac, a sentiment shared by many in our community.

    Generac's failure to honor its warranty promises and provide adequate customer support is unacceptable. We urge anyone considering the GP2500i inverter generator to seek alternatives. Don't make the same costly mistake we did.

    1-Star Warning Review:

    Avoid Generac's GP2500i Inverter Generator at All Costs!

    We've experienced a nightmare with Generac's GP2500i inverter generator, encountering issues six times across two different units on our company trucks. Despite regular maintenance and adherence to recommended procedures, both units suffered from persistent malfunctions. Our attempts to seek warranty support were met with frustration and delays, with service repair dealers turning us away multiple times.

    After months of back-and-forth, promises of replacements, and wasted trips to repair facilities totaling over 200 miles, we've had enough. Even a public exposé of our ordeal failed to prompt meaningful action from Generac.

    It's been six months since our initial problems arose, with no replacement units in sight. Considering the hefty price tag of $700 per unit, this level of incompetence and disregard for customers is unacceptable. If you value your time and money, steer clear of Generac's GP2500i inverter generator.
    Customer image
    Ashley Barillas
    1.0 out of 5 stars Beware: Generac's GP2500i Inverter Generator Warranty Nightmare
    Reviewed in the United States on March 17, 2024
    Our company, a respected establishment in Downtown Chicago with a remarkable 4.8-star rating from hundreds of satisfied customers, has long relied on Generac equipment. Despite our confidence in the brand, our recent experience with the GP2500i inverter generators has been a profound disappointment, exposing serious flaws in Generac's warranty system and customer support.

    Unprecedented Maintenance Issues:

    Investing over $700 per unit, with multiple generators on each of our trucks, we expected impeccable quality and service commensurate with our investment. However, two of our GP2500i generators began experiencing problems just months after purchase, despite meticulous maintenance by our in-house technicians, following Generac's recommended procedures to the letter.

    Generac's warranty department proved utterly ineffective, offering no solutions beyond directing us to service repair dealers who repeatedly refused to honor the warranty. It wasn't until January, after weeks of frustration and wasted time, that we finally secured promises of replacements from Kristin D. Yet, even this proved to be another ordeal.

    Endless Trips for Failed Repairs:

    In February alone, we endured four roundtrip journeys totaling over 200 miles to the repair facility, all in vain attempts to rectify the persistent issues plaguing our generators. Despite clear documentation and undeniable evidence of malfunction, Generac failed to resolve the matter or provide any meaningful support.

    Public Exposition of Warranty Breakdown:

    The gravity of our situation was underscored when a prominent figure and their company documented the malfunctioning generator in a video posted online. This public exposure should have prompted swift action, yet our contacts at Generac, Kathy F. and Candace M., offered only empty assurances. Even with widespread attention and pressure mounting, Generac remained unresponsive.

    A Plea to Potential Buyers:

    It's inconceivable that a product priced at over $700 each should bring such frustration and disappointment. As a reputable establishment, we expected better treatment and support from Generac, a sentiment shared by many in our community.

    Generac's failure to honor its warranty promises and provide adequate customer support is unacceptable. We urge anyone considering the GP2500i inverter generator to seek alternatives. Don't make the same costly mistake we did.

    1-Star Warning Review:

    Avoid Generac's GP2500i Inverter Generator at All Costs!

    We've experienced a nightmare with Generac's GP2500i inverter generator, encountering issues six times across two different units on our company trucks. Despite regular maintenance and adherence to recommended procedures, both units suffered from persistent malfunctions. Our attempts to seek warranty support were met with frustration and delays, with service repair dealers turning us away multiple times.

    After months of back-and-forth, promises of replacements, and wasted trips to repair facilities totaling over 200 miles, we've had enough. Even a public exposé of our ordeal failed to prompt meaningful action from Generac.

    It's been six months since our initial problems arose, with no replacement units in sight. Considering the hefty price tag of $700 per unit, this level of incompetence and disregard for customers is unacceptable. If you value your time and money, steer clear of Generac's GP2500i inverter generator.
    Images in this review
    Customer image Customer image

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