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Generac 5818 Standby Air-Cooled Generators Reviews & Ratings

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Generac 5818 Reviews
Overall Rating
Features
5/5
Quality
4/5
Performance
4/5
Value
4/5
Overall
4.2 out of 54.2 out of 54.2 out of 54.2 out of 54.2 out of 5
Pros
Quiet (2)
High Quality (1)
Reliable (1)
Durable (1)
Features (1)
Cons
Expensive (1)
Low Quality (1)
60% of respondents would recommend this product to a friend
6 Reviews  Sort by 
 
Al
Most Helpful Critical Review
REVIEWED
NOV.
01
2015
3 out of 53 out of 53 out of 53 out of 53 out of 5
No Way...
Got this generator from a local company. The first one lasted around 800 hours before it started smoking from the exhaust...badly. After 4 months finally got another one. 978 hours on this one and the same problem...smoke out of the exhaust. I have a cabin. This has to power lights, microwave, well, refrigerator. This one has to go, and get a Honda.
Al Does Not Recommend This Product
Manufacturer Response
Brand Rep
Al,
We are disappointed to learn of your unit's issues. If your generator ever experiences operational complications, we would recommend contacting an independent authorized service provider in your local area for any diagnostic or servicing work that may be required. Please know that these trained professionals are able to not only identify the cause of your unit's issues, but can also provide any applicable warranty coverage to your generator as well. To locate an independent authorized service provider closest to you, please use your postal code for searching purposes here: http://www.generac.com/dealer-locator?cid=frm-105-ab . Moreover, if you would like to speak with us directly regarding your personal experience, please contact us at 888-GENERAC (436-3722); we are available 24/7.
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31
Mitchell
Purchased from Electric Generators Direct
Purchased 4/2/13
Total Helpful Votes
30 Helpful Votes
REVIEWED
APR.
24
2013
5 out of 55 out of 55 out of 55 out of 55 out of 5
Oh So Quiet
I was a little nervous with the spec for how quiet the generator was supposed to be, as i was planning on installing it into a renewable energy system at a cabin in the woods. Last thing i wanted to do was to drown out the silence of the woods with a noisy generator. I couldn't believe how quiet it was. I have a little portable 1000W suitcase unit and this is even quieter than that! I can't wait to get the cabin done and install this for real and see how well it does out there. VERY... more
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302
Brian E.
Austin, TX
Purchased from Electric Generators Direct
Purchased 5/29/13
Total Helpful Votes
27 Helpful Votes
REVIEWED
SEP.
16
2013
3 out of 53 out of 53 out of 53 out of 53 out of 5
Generac: Slow And Unreliable
Unit I received from Electric Generators Direct seized in the first 5 minutes of operation. Took me 3 months to get replacement and scavenger pump did not work for the additional reservoir. This caused the engine to overfill with oil and smoke badly. Still waiting on a resolution with that. It runs good but only with the engine sump and not the extra large reservoir filled with oil.
Pros: Features, Quiet
Cons: Low Quality, Expensive
Brian Does Not Recommend This Product
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273
Lou
Purchased from Electric Generators Direct
Purchased 8/27/14
Total Helpful Votes
12 Helpful Votes
REVIEWED
OCT.
06
2014
4 out of 54 out of 54 out of 54 out of 54 out of 5
Offgrid Backup Generator
I have my generator, the Generac EcoGen 5818, 6kW all connected and it works fine. However I must say the quality control of Generac is very bad. I have 2 neighbors with the same generator with the same experience. There were several loose bolts. Luckily because of my neighbor's experience, I knew to check.

Also when I first tried to start it, one of the oil lines was disconnected and oil went everywhere, and a spark plug wire was also disconnected. Generac needs to train their people... more
Lou Recommends This Generac Product
Mike, the Generator Expert
Product Expert
Lou,
If you have input on Generac's quality control, you will need to contact Generac directly to let them know. We haven't received many complaints about Generac quality control issues, and they would much rather hear directly from you (the customer) than to be forwarded this information from us.
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121
Robert B.
Groveland, NY
Purchased from Electric Generators Direct
Purchased 2/18/14
Total Helpful Votes
10 Helpful Votes
REVIEWED
APR.
08
2014
5 out of 55 out of 55 out of 55 out of 55 out of 5
Eco-gen #2
Off grid living is sometimes more expensive than I'd like to admit. I have just purchased my 2nd Eco-gen after #1's inverter seized. I'm not complaining, as it had nearly 5,000 hours on it and the motor section is still fine. It's a trickle down sorta thing. My battery bank had problems which resulted in extra gen use. That has been taken care of and now I will replace the inverter portion of #1 and keep it as backup to my backup. Exellent product here that never skipped a beat with basic... more
Pros: Quiet, Durable, Reliable, High Quality
Robert Recommends This Generac Product
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100
John G.
Newman Lake, WA
Purchased from Electric Generators Direct
Purchased 12/22/14
REVIEWED
JAN.
12
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Great Generator...a Few Loose Ends
After much research we installed this generator to replace a 10kw Kohler. Primary decision based on this generator being specifically made for off-grid application and we have been living off-grid for ten years. Generator arrived on time and in good condition. Two problems were soon evident. The first was the generator would try to start, rev up to 4200 rpms and shut down for "overspeed."

Owners Manual very sparse on details and really no help for trouble shooting. Called Generac... more
John Recommends This Generac Product
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