Search  for anything...

AMERISUN 2500-Watt Gas Powered Portable Inverter Generator, CO Sensor, Super Quiet for Home Backup, Emergency, Camping, EPA Compliant

  • Based on 96 reviews
Condition: New
Checking for the best price...
$355.02 Why this price?
Save $543.98 was $899.00

Buy Now, Pay Later


As low as / mo
  • – Up to 36-month term if approved
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Wednesday, Jun 3
Order within 12 hours and 11 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Output wattage: 2500


Set name: Small Gas Generator-CO


Features

  • HIGH POWER OUTPUT: The inverter generator produces 2500 peak watts and 1900 running watts, powerful energy in a tiny body, perfect for powering essential devices during outdoor activities or emergencies
  • PORTABLE & LIGHTWEIGHT: Weighing only 39.7 lbs, the portable generator features a convenient carrying handle, making it easy to transport for camping, tailgating, and other outdoor activities
  • QUIET OPERATION: Operating at a noise level of 69dB at 23 feet, it ensures a quieter environment. The 2500w Inverter Generator operates without disturbing noise
  • EXTENDED RUNTIME: The 1.05-gallon fuel tank allows for up to 11 hours of operation at 25% load and 5.5 hours at 50% load, providing long-lasting power and can save up to 25% fuel
  • VESATILE OUTPUT OPTIONS: Includes 2x 120V AC outlets, 1x 12V DC outlet, and 2x 5V USB ports, the gas powered generator allowing you to power a wide range of devices simultaneously.

Brand: AMERISUN


Wattage: 2.5 KW


Fuel Type: Gasoline


Power Source: Fuel Powered


Recommended Uses For Product: Camping


Item Weight: 39 Pounds


Voltage: 120 Volts


Output Wattage: 2500


Special Feature: Lightweight


Included Components: AM5020


Wattage: 2.5 KW


Fuel Type: Gasoline


Power Source: Fuel Powered


Recommended Uses For Product: Camping


Voltage: 120 Volts


Output Wattage: 2500


Additional Features: Lightweight


Engine Type: Internal Combustion Engine (Gasoline)


Ignition System Type: Recoil start


Tank Volume: 1.05 Imperial Gallons


Total Power Outlets: 2


Engine Power Maximum: 2500 Watts


Starting Wattage: 2500 Watts


Running Wattage: 1900 Watts


Smart Home Compatibility: Not Smart Home Compatible


Frequency: 60 Hz


Runtime: 11 hours


Color: Bright Red


Brand Name: AMERISUN


Included Components: AM5020


Model Name: AM5020C


Model Number: AM5020C


UPC: 840432709276


Manufacturer: Amerisun Inc.


Manufacturer Part Number: AM5020C


Unit Count: 1.0 Count


Item Type Name: portable generator


Warranty Description: 2 years


Item Weight: 39 Pounds


Item Dimensions L x W x H: 12"L x 20"W x 20"H


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Jun 3

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Awesome unit at a great price! Awesome unit at a great price!
Output wattage: 2500 Set name: Super Quite Small Generator
Quiet! I purchased it to run our RV while we boondocked a couple days on the beach. It worked great! Ran our mini-split with no issues to provide some heat at night and AC during the day. We would shut off the HVAC to run the toaster, microwave and coffee pot so we didn’t overload it. The size and weight along with how quiet it is was worth the work arounds. It ran 12 hours on one tank when the temperatures didn’t require a lot of heat or cooling. Ran 8 hours on the night that the mini-split ran a lot. I can carry it with one hand so I use it to run power tools and lights instead of dragging out an extension cord at home. Our previous generator had more power but was a beast to move around. Performance seemed to really improved and smooth out after running under a load by the 5th tank of gas. Most new engines these days say there is “no break in” time but I felt like this one really ran best after a few tanks of gas. ... show more
Reviewed in the United States on April 11, 2026 Reviewed in the United States on April 11, 2026 by deanna brown

  • Little but Tallawah!!!!!!
Output wattage: 2500 Set name: Small Gas Generator-CO
I bought this based on the comments and research. I'm in Jamaica, we just had Hurricane Melissa, so no electricity and no water. I closed my eyes, said a prayer and bought this inverter generator on faith. I HAVE NO REGRETS!!!! I followed all instructions and each time I use it, it starts on one pull. I was able to connect it to my breaker, I was able to power all 8 of my emergency light bulbs, 2 door fridge, washing machine, 55 inch TV, PS5, 2 Fans all CPAP Machine all at the sametime. I had no surges, nor decrease in power, especially when the washing machine was on. What I was impressed with most of all, was the 1 gallon tank I would use an entire 6 litre bottle of 90 octane gas and that would give me little over 11 hours, with everything connected and operating, including doing 2 large loads of laundry. This Amerisun Inverter generator is the real deal, its really quiet and gets quieter with the eco mode switched on. Its very light, compact, lasts unexpectedly long for a 1 gallon tank capacity. Very powerful for its size, very mobile, I made a great investment with this inverter generator, because Jamaica is Hurricane prone and we have power outages every now and then, so its a win win situation. I recommend this to everyone, whether your a camper, tradesman, having a disaster, you will never regret it. Its worth every penny and its extremely affordable compared to others it maybe the cheapest. ... show more
Reviewed in the United States on December 7, 2025 by Andy McMahon

  • Easy starting and quiet.
Output wattage: 2500 Set name: Small Gas Generator-CO
Better than I expected. Ships without oil so you must add before starting. So add oil. Remove two screws and pull cover from side. 10w30. full synthetic, Even includes a funnel shaped to make adding oil easy. Awesome. Added fuel. Has a fuel gauge on top. Even more Awesome. Followed the tag instructions. Turn on vent on gas cap. Starting on the side. First time starting it took quite a few pulls with choke on. After the initial start, it is super easy. It is considered loud compared to more expensive models, and yet, I believe it is very quiet. More quiet than I had planned. Has USB outlets. Eco mode which lets it idle when nothing is pulling power. I ran an old air compressor with it and then plugged in an electric heater. Both ran with no issues. The nicest thing is how easy it is to tote around. My old compressor was on wheels and a nightmare just to move around. Including video of my wife starting. Hopefully you can hear how quiet it is and see how easy it is to start. She had no issues. My only regret is I got it on sale and now I wish I had bought two. I will update if I run into any problems and how it performs in an emergency over a long period. Really happy with this purchase. ... show more
Reviewed in the United States on April 2, 2026 by Christopher Sharpe

  • Quiet and efficient
Output wattage: 2500 Set name: Small Gas Generator-CO
This generator is easy to use, runs flawlessly and is SUPER QUIET!!! I’m grateful to have purchased this rather than a more expensive version. Fantastic generator that makes much less noise than a blower or mower.
Reviewed in the United States on April 8, 2026 by Vic

  • Overall very happy with the purchase.
Output wattage: 2500 Set name: Small Gas Generator-CO
Works very good. Kind of a cold starter but starts on first or second pull after it has been running for a few minutes. Very quiet. I get about 10 to 11 hours running at under 25% I'm very happy with the purchase.
Reviewed in the United States on April 20, 2026 by Captn Stabn

  • Nice inverter
Output wattage: 2500 Set name: Small Gas Generator-CO
This inverter generator seems to be a quality product. Fit and finish are great. Took 5 or 6 pulls to start the first time. After that it has started the first pull. Display / control panel is functional and laid out nicely. I have only had it a few days and started it about 3 times. It is much quieter than the older model generators. Having to remove the side cover to check the oil is an inconvenience but not a deal breaker. You have to remove 2 screws and pull the cover off. Getting the cover back on and lined up to tighten the screws has been somewhat frustrating. There is also a panel for access to the spark plug. It is light to carry but could seem heavy for someone with bad back or up in years. Over all I'm happy with it. One thing I want to call out is: it stated on Amazon that it was made in America but it says on the box that's it's made in China. Not cool. ... show more
Reviewed in the United States on April 13, 2026 by C. Waters

  • No Complaints
Output wattage: 2500 Set name: Super Quite Small Generator
It's not unusual where I live to have power outages several times a year - occasionally for days. I have a generator in my barn that powers barn, shop, and home when needed. But I wanted a small portable for just my outdoor boiler to avoid the gymnastics to back feed entire property when power is out and when I expect the outage will be brief. I used the Amerisun for first time a week ago during a four hour outage to keep boiler circulating pump operating. It was satisfying not to have to worry about boiling off antifreeze and thus the five star rating. The generator starts easily, is quiet, and seems to be of good quality. And the price was great. ... show more
Reviewed in the United States on March 7, 2026 by ral

  • Weighs inly 28.6lbs, starts easily and runs smooth
Output wattage: 2500 Set name: Small Gas Generator-CO
Have used 5 times, basically to charge my electric battery power stations. It runs smooth and much wuieter than my regular generator, also produces clean energy required fir sensjtive electronics. It is light and starts on 1st or sscond pull. So far si good.
Reviewed in the United States on April 13, 2026 by John

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...