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Customer reviews for 5,500/4,000-Watt Genmax Duel Fuel Open Frame Inverter With CO Sensor + Clean Inverter Technology for
5,500/4,000-Watt Genmax Dual Fuel Open Frame Inverter With CO Sensor + Clean Inverter Technology
4.5 out of 5 stars
stars33 ratings32 reviews
  1. 5 stars79% (26)
  2. 4 stars12% (4)
  3. 3 stars0% (0)
  4. 2 stars0% (0)
  5. 1 star9% (3)

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Showing 11-20 of 32 reviews
Apr 29, 2026
Joe C
1 out of 5 stars review

Disappointed

This generator claims to have 6500 W running and 8500 W start but the generator I just replaced it with had 2900 running 3200 starting but was as powerful as this one. Also, the generator has shut itself off two nights in a row when I was sleeping.

Review from Akron Products
Helpful?203545W6M89A16529772528
Feb 18, 2026
Joe M
5 out of 5 stars review

this generator is sweet

I bought this unit after my Champion generator took a dump on me. Just wanted to say this unit has been nothing short of Amazing! It has the necessary outlets and not the typical over complicated amount, as well as extremely portable! Good Job Genmax!

Review from Akron Products
Helpful?203545W6M89A16529772528
Apr 9, 2026
James
5 out of 5 stars review

Genmax Generator

Very good quality. Easy to assemble. Works well on propane. Description o line states unit is Made in Japan , but label on my box states Made in China. Happy with generator regardless.

Helpful?203545W6M89A16529772528
Dec 22, 2025
Tristan A
5 out of 5 stars review

amazing generator

Bought this Genmax 5500watt generator as a backup for power outages, and it has done exactly what I needed. Assembly was quick, and it fired up easily after adding oil and gas. I was able to run my refrigerator, freezer, lights, Wi-Fi, and a few outlets without any issues.

Review from Akron Products
Helpful?203545W6M89A16529772528
Dec 1, 2025
Mario L
5 out of 5 stars review

A generator that never lets you down!

The GM5500XID has blown me away with how reliable and powerful it is. It starts up instantly, runs smooth, and handles everything I throw at it without struggling. The build quality feels heavy-duty, and the noise level is much lower than I expected for this size generator. I’ve used it for work, home backup, and even on the go — and it performs flawlessly every single time. Fuel efficiency is great, makes it super convenient. If you want a generator you don’t have to worry about, the GM5500XID is the one. Highly recommended!

Review from Akron Products
Helpful?203545W6M89A16529772528
Dec 22, 2025
Jaxxon P
5 out of 5 stars review

FUEL RUN TIME!!

Fuel efficiency is impressive I got several hours of run time on a single tank, and the noise level is surprisingly manageable compared to other generators in this class. The outlets are conveniently placed and include both 120 V and 240 V options, which made hooking up my tools and home circuits easy.

Review from Akron Products
Helpful?203545W6M89A16529772528
Apr 24, 2026
Ryan G
1 out of 5 stars review

Generator won’t start.

I just purchased the generator yesterday, connected it to propane, followed the directions, and it won’t start.

Review from Akron Products
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Feb 23, 2026
Jacob N
4 out of 5 stars review

Inverter Tech!!!

LOVE the inverter tech slide, i had no clue what that meant initially but it is SUPER helpful. I am from LA so we have tons of pollution, so this makes me feel better about using a generator. THIS IS CLEAN ENERGY!!

Review from Akron Products
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Mar 10, 2026
Charles S
4 out of 5 stars review

Great in Cold Weather

This Generator was phenomenal in the ice cold area of detroit. I was honestly surprised, thought it was gonna blow out on me. Get a 7500 and you won’t second guess yourself again!

Review from Akron Products
Helpful?203545W6M89A16529772528
Mar 5, 2026
Sharkesh N
5 out of 5 stars review

This generator was amazing

I bought this unit a while ago and i was walking my dog zues outside in the garage and he sniffed it out from the cupboard area. Lo and behold it fired right up and had me and the family impressed at our cookout! Get it!

Review from Akron Products
Helpful?203545W6M89A16529772528