Genmax Power

5,500/4,000-Watt Genmax Dual Fuel Open Frame Inverter With CO Sensor + Clean Inverter Technology

|55 ratings
Item # 990436814
Current price is $549.00
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Columbus, 43215
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Smart summary

Generated by AI
  • Powerful Output: Provides 5,500 starting and 4,000 running watts on gasoline, or 4,950 starting and 3,200 running watts on propane for diverse recreational power.
  • Dual Fuel Engine: Features a powerful 160cc OHV engine with dual fuel technology, allowing operation on either gasoline or propane.
  • Clean Inverter: Utilizes clean inverter technology to safely power sensitive electronics like laptops, smartphones, and TVs.
  • Safety Monitoring: Includes a CO sensor indicator light and an automotive-inspired digital data center display for operational gauge monitoring.
  • Versatile Outlets: Equipped with 1x Duplex 5-20R 20A 120V, 1x TT-30R 30A 120V, 1x 14-50R 50A 120/240V, 1x USB-A, and 1x USB-C ports.
  • Lightweight Portability: An ultra-lightweight open frame inverter, weighing under 60 lbs, ensures easy transport for outdoor use, featuring a recoil start.
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5 out of 5 stars
5 out of 5 Stars. 5 reviews
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5,500/4,000-watt genmax dual fuel open frame inverter with co sensor + clean inverter technology three-quarter front view of a portable inverter generator with orange fuel tank and black tubular frame, control panel with automotive-style digital display and CO sensor indicator, visible duplex 5-20R, TT-30R and 14-50R outlets plus USB-A and USB-C, propane fitting and wheels, 160cc engine housing and recoil-start area visible — suitable for camping, RV use, and outdoor backup power.
5,500/4,000-Watt Genmax Dual Fuel Open Frame Inverter With CO Sensor + Clean Inverter Technology
Hero image 0 of 5,500/4,000-Watt Genmax Dual Fuel Open Frame Inverter With CO Sensor + Clean Inverter Technology, 0 of 9

About this item

Product details

In need of reliable power outdoors? We've got you covered with this Genmax 5,500-Watt dual fuel open frame inverter generator. Perfect for all your recreational needs, it features a powerful 160cc OHV engine and offers a high output of 5,500 starting watts with 4,000 running watts on gasoline and 4,950 starting watts with 3,200 running watts on propane. Clean inverter technology lets you safely use laptops, smart phones, speakers and TVs. The control panel consists of CO sensor indicator light, automotive inspired digital data center display, 1x Duplex 5-20R 20A 120V, 1xTT-30R 30A 120V, 1x 14-50R 50A 120/240V, 1x USB-A, 1xUSB-C
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Specifications

  • Robust Engine: 160cc OHV high performance 4 cycle engine. Fuel-efficient, reliable, powerful providing long life and excellent heat dissipation.
  • High Output: 5,500 starting watts with 4,000 running watts. At only 65dB this powerful portable inverter generator is the ideal product for your tailgating and camping needs.
  • Low Idle With Portability: Lightweight for easy transport weighs less than 60lbs! Low idle technology gives you a run time of 8 hrs at 50% load with a 2.11 gallon fuel tank.
  • Easy To Use Control Panel: The control panel consists of CO sensor indicator light, automotive inspired digital data center display, 1x Duplex 5-20R 20A 120V, 1xTT-30R 30A 120V, 1x 14-50R 50A 120/240V, 1x USB-A, 1xUSB-C
  • In Compliance With Latest Standards: In compliance with PGMA, UL2201 and CARB 2024
  • Made in Japan for high quality customer satisfaction

Member ratings & reviews

4.6 out of 5 stars
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55 ratings54 reviews
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  1. 5 stars78% (43)
  2. 4 stars13% (7)
  3. 3 stars2% (1)
  4. 2 stars2% (1)
  5. 1 star5% (3)
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Showing 1-3 of 54 reviews

Mar 12, 2026
Reviewer name: Roddy T
5 out of 5 stars
5 out of 5 stars review

4000iA Great purchase!

I purchased the GENMAX 4000 iA knowing that I needed to have a powerful, reliable and easy to move unit that could handle operating several things in my house if we ever had a power outage. I am glad that I made this purchase because an ice storm took out our power for 4 days. I set this unit up quickly to run temporary heat and lights, and it handled everything for the entire outage. Super quiet when it was in low idle mode and extremely strong when something demanded power. It ran about 6 Hrs. under heavy load with a full tank of gas. It started back up immediately after refueling with one pull, no problems! The weather was about 12 degrees Fahrenheit, day and night and the GENMAX was perfect! I have owned and operated many generators; this brand is incredible. If you need a small self-enclosed generator, get this product! It’s absolutely worth the money and built incredibly well. Strong, quiet and lightweight! Starting is so easy, which was important to me as well.

Review from Akron Products
Helpful?203545W6M89A16529772528
Jul 26, 2025
Reviewer name: Wiz714
5 out of 5 stars
5 out of 5 stars review

Mighty Genmax

I recently purchased from Sam’s Club the Genmax GM5500XiD inverter generator, and I’m thoroughly impressed with its performance! Setup was quick and easy, taking just minutes! I used it to power my electric pressure washer, and it delivered flawless and reliable power. I opted for LP gas as the fuel source, and the dual-fuel capability worked seamlessly, offering flexibility and convenience. Its quiet operation makes it ideal for any setting, while the digital control center provides real-time updates on voltage, fuel level, and run hours. The sturdy wheeled frame allows for easy maneuverability. The generator’s outlets provide versatility for connecting various devices and appliances, including RV systems and heavy-duty equipment. It also has a couple of USB ports! I also reached out to their support as I had a couple of questions regarding specs and maintenance in which they were very professional and knowledgeable. Highly recommend this generator for its power, safety features, portability and support!

Helpful?203545W6M89A16529772528
Jul 19, 2025
Reviewer name: Trever Lake
5 out of 5 stars
5 out of 5 stars review

Huge Power, small size!

Free shipping and arrived in only 2 days. Got it out of the box and running in about 15 minutes. GENMAX thought of everything, tools, oil, and accessories were all included. The best part is the propane option no need to go get gas just grabbed the propane from the BBQ and got to work. First I hooked up my air compressor to test it out. The engine is so quiet compared to other generators. Loading in my truck was a breeze, it's so light and compact. Grabbed my welder and it powered it no problem. So nice to be able to weld in the backyard without needing 5 extension cords. You'll have a hard time beating this Genmax.

Helpful?203545W6M89A16529772528

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