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Customer reviews for GP8000E Watt Generator CO-Sense with Transfer Switch Outlet for Home Backup for
GP8000E Watt Generator CO-Sense with Transfer Switch Outlet for Home Backup
4.6 out of 5 stars
stars
589 ratings589 reviews
  1. 5 stars77% (454)
  2. 4 stars15% (87)
  3. 3 stars2% (12)
  4. 2 stars2% (10)
  5. 1 star4% (26)
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Showing 181-190 of 589 reviews
Nov 22, 2013
Reviewer name: Dale62
5 out of 5 stars
5 out of 5 stars review

Snap to set up

At this time all I have to go on is the initial set up as I bought this for power outages in our home. If it works as nicely when we have a outage as it did in set up it will give my wife and I a peace of mind which we have not had since we bought a home in this area.

Review from generac.com
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Dec 28, 2015
Reviewer name: InTheDark
5 out of 5 stars
5 out of 5 stars review

The Power Came on Just Before We Fired It Up!

We were into a two day power outage and the temperature was in the 20's. Called ahead and paid over the phone - picked Generac because of the name and quality. Drove 70 miles and picked it up and by the time I got home I was too tired to put it together. It got down to 13, but our propane stove kept us warm - put our food outside! Got the generator put together and the power came on! Took a break, added oil and cranked w/o gas to make sure everything was oiled good and it started! Filled with gas and started on the first crank. Plugged in 2 space heaters and the truck engine heater and let it run for an hour and a half to break it in for next time. Plugged in the battery charger and charged for 24 hours to make sure it is ready to go - really like the battery start feature! Great purchase for us - we have been wanting to get one. (Your program won't let me post a 4 X 6 photo.)

Review from generac.com
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Sep 15, 2018
Reviewer name: dmoakl
1 out of 5 stars
1 out of 5 stars review

Got it for hurricanes... doesn't work

Bought generator 2 years ago which worked on startup. I drained the gas tank and confidently awaited a time for its use. I am in NC with Hurricane Florence and brought out the generator. After filling the gas tank, checking the oil, charging the battery..... nothing. Will not crank by hand or battery. What a disappointment when it is needed most.

Review from generac.com
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Dec 3, 2015
Reviewer name: Chuck
5 out of 5 stars
5 out of 5 stars review

This product has a remarkable starting ability never had one problem

I live in a single home with oil heat and during the winter I need something to run all of the major things in the house if my power is lost this generator for the price is the best purchase that I've ever made it starts every time on the first or second pull I never had a problem with the needing more power than it supplies and if I do overload the circuit The Breakers work and help me to be confident so that my family is not left in the dark

Review from generac.com
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May 4, 2025
Reviewer name: jamess49_4299
5 out of 5 stars
5 out of 5 stars review

Must have!!

[This review was collected as part of a promotion.] The first thing I noticed when receiving the generator. It is heavy and the packaging met the needs so it was protected during shipping. There was even a couple strips is 1/2” wood to protect the parts. You will need a couple people to load it into a pickup bed. The first thing I do with all equipment is read the manual and check for missing parts. One very small issue, the bolts in the parts list did not match what was shipped. There were 4 of the M8 bolts and the list showed 8. There were 2 bolts in the. Kit that were not on the parts list but matched where they were needed to be installed. This is not an issue with the unit at all but I do like when the parts list matches what is sent. On to assembly. There isn’t a lot to do to get the unit ready for use. Bolt on the wheels, frame feet and handle. Then add oil and install the included battery and it’s ready for use. The tires are run flat tires and once mounted with the feet the unit sits level. After turning on the breakers and filling with gas I hit the electric start and it fired right up on the second try. I plugged it into my 5th wheel camper. I used my sure protector and it did not show any faults. I then turned on every light, refrigerator, microwave, exhaust fans, two air conditioners, and the furnace. The unit had no trouble at all keeping up with the load in fact pretty much seemed to just idle through. The unit is a tri-gas unit. I plugged in the easy quick connect propane hose and hooked it up to a 20lb propane bottle. I turned the fuel selector knob from gas to propane and it switched flawlessly with just a slight hesitation. I didn’t notice any interruptions with the loads when it switched. After letting the unit set for a few days I pulled it out of the garage and rolled it outside. The very sturdy u shaped handle is great and makes rolling it around a breeze. The temperature was 45 degrees so cool but not cold out. I wanted to try starting with the pull cord. It is a big engine to pull start (500cc) and it started on the second pull. It may have fired on the first pull had I anticipated the force needed to pull it. I let it warm up and plugged in my welder. I don’t typically use a welder on a generator but it is a need occasionally. My welder is a Vulcan Mimas 215, I’d prefer a Miller or Lincoln but I work with what I have. I used it to weld using.30 flux core on 3/16” steel. A little heavier than suggested on 120V power. As soon as I started welding it tripped the 120V GFI reception the generator. Usually I don’t plug into a GFI receptacle for welding but I reset it so I could see if it would actually run my welder. The second time it didn’t trip and yes ran my welder as well as if plugged into shore power. I don’t know why the receptacle didn’t trip the second time but it held. Al in all I love this generator and am anxious to get a transfer switch set up on my electrical panel for the house. And have back up power during a power outage and have a good outlet to run and exercise this beast with a good load on it monthly. The noise this unit produced was not that bad, a lot quieter than others I’ve dealt with.

Review from generac.com
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Sep 4, 2021
Reviewer name: Moose
5 out of 5 stars
5 out of 5 stars review

Mine is the GP5500 and it can't wait to start

I needed something in a hurry. Looking for a Japanese product. My friend owns two ACE hardware stores. They only carried Generac. Made in America. Shucks! He told me Generac made top quality stuff. I bought mine in a jam. Delighted. This baby longs to start up! Dying to start up! on the first pull. Reliable, noisy as all get out-no problem. I surround it with some boards-it produces tons of power. Runs forever. I will buy another one. You will love yours .

Review from generac.com
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Nov 22, 2011
Reviewer name: Jersey Jeff
5 out of 5 stars
5 out of 5 stars review

Best of the best...

If looks meant anything, this is a killer of a generator. I took back a B & Stratton, then bought this. Works great, easy to set up and works flawlessly with the your Manual Transfer switch. Generac is second to none when it comes to generators. Jeff M.

Review from generac.com
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May 5, 2025
Reviewer name: thecheapsubscriber_4265
5 out of 5 stars
5 out of 5 stars review

Great to have as a backup for extreme weather

[This review was collected as part of a promotion.] We live in a place that is prone to have extreme climate, and sometimes the power can go out when it’s either too hot or too cold. A generator is a necessity for those occasions, particularly to help keep the house at an adequate temperature - whether by powering AC or help turn on space heaters and/or fans. What I like about this product is that it is tri fuel - it can work with gasoline, propane, and natural gas, depending on your needs. We tested it out with gasoline and it worked just fine. Gasoline is also how you can get the most wattage and longest run time. Noise level is pretty ok as well, about what expected for a generator this big. The unit is very heavy, which makes a little bit tricky to get it out of the box for the first time. But once you install the wheels and handle, moving it around becomes super easy. Assembly would also be easier if it included the hex tool, but otherwise it was ok and pretty straightforward. We now need a natural gas hookup so we can have the option to use any of three methods it needed.

Review from generac.com
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Apr 18, 2025
Reviewer name: DirtCop
4 out of 5 stars
4 out of 5 stars review

Great alternative to bigger generators

A lot of features for the money! This unit delivers emergency power for our whole house, except for the oven and dryer. With it, freeers and refrigerators have enough amps to start their compressors, something smaller generators do not! Also, It has overheating shutdown, which is a great reliability feature. The only problem we’ve had so far is with the battery start. the terminals on the battery come loose way to easily. An inexpensive alternative to the permanent generators, which can easily run over $10000 installed.It is sad that we have a need for this technology, when our parents had cheap reliable energy. And it all could of been avoided.

Review from generac.com
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Feb 25, 2014
Reviewer name: ROB
5 out of 5 stars
5 out of 5 stars review

Great quality for those times of need.

Purchased day of 2014 Ice Storm, Living in the NE After losing power during Super Storm Sandy fear set in, lost power for four days the generator was a life saver. Plenty of power to run what we needed, including heat! Electric strart was great feature. A must have for anyhome owner who has lost power!

Review from generac.com
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