Generac Power Systems Reviews

I love my Generac generator but watch who you get to install it because people would tell you anything to get your business. A Special Thank You to Letreya:
I would also like to recognize Letreya in Customer Service for providing me with excellent customer service. She patiently answered every question I had and actually took the time to show me exactly where the information she was explaining could be found in the warranty. She was knowledgeable, patient, thorough, and extremely helpful. Thank you, Letreya, for going above and beyond and for providing such outstanding customer service.

After Hurricane Helene left us without power for 6 days, my wife and I researched standby generators for over a year. We finally decided on a Generac 22kW with natural gas. Two co-workers have one and they can't say enough good things about theirs. One Generac standby generator sustained family through the power loss during Helene and the other purchased after Helene. Purchased ours this year and installation was complete on June 5, 2026. My parents purchased one and their install was done the following week. Wait time was long due to city permits but worth it in the long run. Southern Power in Augusta, GA handled everything involving the install. Very smooth process. Weekly 5-minute tests run every Saturday morning. Noise level isn't that bad. Haven't needed it for a prolonged power outage but there have been a few power flickers. Generator was ready to run just in case.

⭐ 1/5. I rarely leave negative reviews, but my experience with Generac of Annapolis has been incredibly frustrating and, at this point, unacceptable. I purchased a new 27kW whole-home generator in June for more than $21,000 and pay another $41/month for monitoring and maintenance. Since installation, the generator has gone down THREE times and has spent an unacceptable amount of time inoperable. What makes this worse is the customer service. The system is advertised as having 24/7 monitoring, yet I have repeatedly been the one calling THEM to find out why my generator is down. On multiple occasions, the person answering the phone either had no information or told me someone would call me back. Those callbacks routinely never happened.

My system was installed in February 2026 and have had 4 service calls for same engine intake manifold issue. With winter approaching, I don’t have any confidence in the system.

I recently had a new top-of-the-line Generac Generator installed. I was told that an auditor would be reaching out to ensure that everything was hook up properly. However, no one has reached out as of yet. Also since the installation, my brand new A/C unit has been cutting on and off. This has never happened in the 4 decades of living in my home. An electrician came out to run a line in my breaker box and outside for the generator to operate. However, the electrician clearly installed something wrong. I have contacted Generac multiple times to get this issue resolved. As of today, no one has fixed the problem. As much as they charge human beings for this Generac, I feel like someone should come out the same day issues occur period. If you asked me, their customer service is terrible for **, period. IF this doesn't get resolved, they can come get their product and remove everything that was installed!

Had generator installed in the beginning of May 2026. Had the installer out five time to fix the spit and spudder issue and problem still exist. Had to order parts. Brand new generator. Would not recommend this to anyone. Now if have a generator that is worthless they sit generator off till parts arrive.

I have a new Generac 26kw. It has been installed for 6weeks. As of yet the company that sold it to me can’t get it to run. Poor customer service and parts availability. I’m afraid I’ve made an expensive mistake.

Frustrated whole house generator owner. Huge investment, and it’s sitting like a tombstone in my yard. Waiting on so called parts to arrive for repair!

Incompetent and thug like behavior. I contracted with them in Sept 2025 for a $30,000 backup generator. It is now one year later, and they have never gotten proper permitting and resorted to intimidating with a lawyer to get my deposit back. I still don't have the money back yet! This was Generx in Sarasota County, Florida. Please never use this company. They are truly a nightmare!!

My Generac "home standby generator" (22kW natural gas-powered, with a Generac auto transfer switch) was purchased more than 5 years ago. Unfortunately, its dependability is questionable. I have 3 to 4 brownouts every year. Sometimes it works; sometimes it doesn't. I have annual service from an authorized Generac contractor. The problem is poor quality control over parts made in China and elsewhere. The unit is assembled in the U.S., but not "made" in the U.S. I have learned that a new Generac would suffer from the same problem: poor quality control over parts. I had a Kohler generator when I lived elsewhere, without any of these difficulties.

Worst company we have ever dealt with. Our sales person would never return phone calls or Texas. We had to go through the main office. They would never return phone calls. We’d have to call them back in three days. And they wouldn’t even return our deposit. Worst company we ever dealt with. Our neighbors down the road, got one and they have been having nothing but problems with theirs.

Wi Fi connection issues all the time. Never connects to the home internet. In case of power failure I have to connect manually. Power comes on I have to disconnect manually. I have Xfinity as my internet provider. All other devices work on Xfinity except the Generac. It is always customer's problem not Generac. Fault is always mine never Generac's. I am stuck with a Generac's poor product. Pl shop for a different brand before selecting a generator.

I’ve had my Generac OneWash for quite a few years and I’ve never had any problems with it until now. The gun nozzle broke free from the rest of the gun and needs replaced. Except they don’t make that part anymore. In dealing with customer service, the first one directed me to the correct part on their website which is listed as unavailable. The second one said that one gun won’t work with the other gun when asked if another model gun would work. Apparently she thought I was trying to connect one gun to another lol. The third one said she contacted their two distributors and they have the item I need in stock and yet when I contacted them, they don’t have it in stock because they get their parts from Generac directly. So now I have a power sprayer that works fine but can’t be used because they no longer carry the parts needed. Imagine if the auto industry did that…

I have gone through too much for my NEW generator that has never past a weekly test. I purchased 26w whole house lemon from The Generator Superstore in Nashville. The service has been great. The generator has never passed a weekly test. The store has been great! Juan B the manager has been out more that 18 times. Jose M in the Houston, TX is the go to for problems. He has been great. Finally it fell on Corporate. Madeline D. she has attempted to help and finally after every part that I know of has been replaced 3 times now it still does not pass the weekly test. I have spent my money, hours sitting at my home waiting for the service call.

Brand new 18kwh stand alone, installed Aug 11th, wouldn't start; tech is told the controller is faulty from the factory, and they will ship out the part OVERNIGHT. Aug 19th still not working, still waiting for the controller, after paying 15K.

We had an 18K put in two weeks ago. We are in day 5 of a HUGE outage right now. Right after the outage started our BRAND NEW 18K generator went out. Seems we are one of MANY in the area. They brought in a TRUCKLOAD of the DEFECTIVE part yesterday. Our part failed and destroyed the motor though. Which I believe GENERAC knew could happen. But, they did not bring motors, just the failed part that everyone had problems with. So, then they said we had to wait 4 days to get the motor.

Purchased for safe and reliable service. Received neither. Thanksgiving snow storm resulted in 110 hours of local power company utility failure. Generac generator failed 3 times during failure. Looking to support class action law suit.

Absolute garbage! Would never recommend Generac to anyone. I own a 10kw unit which is now a monument to my stupidity for purchasing it. It ran for one year and never again. Generac would warranty it saying it was installed incorrectly which was not true. It now just sits there waiting for me to dispose of it. Run away from this product. There is not an option to rate it zero stars!

Generac GP 5000, what a worthless piece of expensive and unreliable garbage! The very first time it was run right after I purchased it, there was so much vibration that the fuel gauge detached from its mount and fell into the fuel tank within the first 5 minutes. No help from Service, a piece of duct tape sealed the hole from the elements going forward. The next time I ran it when we had lost power, the cheaply-made white metal fuel valve snapped off when it was being turned by hand, leaving it partially on and partially off. In the pouring rain and after many attempts I was finally able to turn the broken valve to full on using a flashlight and pliers on the tiny remaining stub where the broken valve remains to this day.

I sold and maintained power generators for 50 years. I never sold Generac. I had customers with connecting rods bend at low hours (on an air cooled engine???), voltage regulators fail at low hours, engines seize, shorts in the generator end, and on and on. The OLD ones were not so bad, the newer ones, even the commercial ones are junk. The only current ones that are any good are Kohler and Winco. And Kohler is also getting cheaper in construction.

Don’t bother paying for a 10-year warranty – it is a waste of money. Generac denied our request to replace our enclosure due to rust because this deficiency is not covered after the first year. The design of this year/model is inherently flawed and the bottom metal collar rusted away and now the entire structure integrity is compromised. They now use a different material on the bottom ring/collar so that this problem doesn’t happen. This was not a cheap warranty and now I have no remedy for an issue that makes the equipment unsafe and unusable as it will likely fall apart if and when it is needed. I will not buy another Generac product or spend money to fix this one based on the unacceptable customer service experience. My case number is ** in case anyone with Generac is reading.

I rarely give negative reviews but, in this case, I haven't been left with much choice. This rating is for the product and company. We had a whole house Generac generator installed in December 2025. This was not a cheap installation. Has run fine in a test/standby mode for 6 months, paid to have all the recommended service done. On June 29th I contacted our dealer (Dynamic Energy Solutions) because we were receiving an error code. They were so backed up they couldn't send anyone until Monday July 6th. Well between those dates we've suffered a power outage and guess what, the backup we were counting on cost us over $1,000 in perishable items which are now sitting on the curb awaiting trash pickup. The generator as we were told needs a "new engine" and it will take 12-14 days to get. Doesn't do a lot of good to spend that kind of money on a backup system that doesn't work!

We purchased a generic a year ago. The machine worked for a few months on standby, then wouldn't start. They make you pay $350 for a tech to come out to tell you they won't work on it. I had to find the parts and fix it myself. The warranty is worthless. I wish I had purchased a more reliable standby generator. It's a real shame, because the one I purchased 15 years ago has never had a problem. I suspect they have recent quality control problems. Please look at all your generator options carefully and stay away from Generac if you're able.

Horrible Company without any quality control or knowledgeable staff in the warranty department, nor any accountability anywhere in their corporate structure or office. Brand new 26kw generator leaking oil from presumably front (flywheel end) crankshaft seal prior to start up. I called the activation phone number to activate unit manually after numerous failed attempts to do this online and thru their non-functioning Wi-Fi mobile link app/generator module. I asked the individual on the phone while going thru the activation process if he could make a notation that the unit, straight out of the box with zero onsite run time minutes, had a small amount of oil residue present at the base of the engine right below the drain hose fitting and collected on top of the engine base mount. He said their system did not allow him to add notes to the record of activation process.

We purchased a Generac generator on April 2nd of this year. When we purchased, the Generac the recommended sales person came to our house for an estimate. As part of that process we were told that they were running a special and we would receive a 5 year extra warranty at no cost to us. So for this and other reasons we purchased the generator on April 2nd. The Generac website also had this offer on the website on that date. It took two months for the Generac installer to install our Generator and now they are denying the extra 5 year warranty. Classic bait and switch! We have discussed this with Generac in both email and on the phone and they are telling us that they will NOT honor the extra 5 years. STAY AWAY! We did everything right we used a vendor recommended on THEIR site for the install. Every single step of this was all them and now they will not honor what their representative sold us!

I purchased a Generac 24W in April 2026. On June 8th during its weekly test cycle, Generator started up and immediately shut down. Since that time, we have had several storms in the area. Thankfully did not lose power as I am waiting on parts to be replaced. First it was thought to be the battery, it was replaced and nothing. Second it was thought to be the controller, that was replaced and still nothing. After my technician waited three hours to get a hold of tech support at Generac, it was determined to be the cellular device. That had to be ordered. It arrived yesterday, 6/22.

Our 2 year old unit failed during a storm. We were charged $300 before a repair person would even come out, we have a warranty and pay for yearly maintenance inspection. The repairman didn’t have a part on his truck and left us without power. He advised we would be contacted on Monday, 2 days after the outage. The part was internal and under warranty so we were not charged again. Please explain how we are responsible to pay for your service personnel to come to address an issue with your unit while it is still under warranty. It is unconscionable that your advertisements show a family feeling safe during a storm and yet when your product fails when it’s needed and you have the nerve to demand payment by credit card before addressing a warranty issue.

A word of caution. I purchased my Generac units a couple years ago and it’s been okay. However I didn’t find out until after the fact that the extended warranty they so adamantly proclaimed during their sales pitch really only applied to their high end model.

While the brand new 26Kw home generator was operating within most normal parameters - it was extremely loud (100 plus decibels at 25’ away) from start up - using three different decibel apps. After multiple start ups and inspections we noticed a “puff” of smoke coming from under the new shiny heat shield - which we then removed to identify the problem. The brand new generator had an existing defect - please see pics - as it explains the obvious excessive noise issue. Reached out to Generac and they said to order a new part - but the two connections still appear misaligned - so we will install the new part whenever it arrives and then determine if it was a defective part, OR a major misalignment from the factory… Stay tuned.

I rarely write negative reviews, but I feel compelled to share my Generac. I've owned Generac generators for over 20 years & recently invested in a Generac PowerCell2 system to work alongside my existing Generac generator. I've chosen Generac because of the company's long-standing reputation and growing up, my father always insisted that if you were buying a generator, you bought a Generac. Unfortunately, my recent experience has been extremely disappointing.

Called Generac in Wisconsin for a part number for a starter motor, was put on ignore three or four times and Keith. My CSR could not find a part number for a starter motor on a guardian 17 Kw generator. In fact, I do not believe he even knows what a starter motor is or does?

I do not recommend Generac! I purchased a unit for my egg room, and since the date of installation the unit has not stored one time. A call was made to Generac to assist in a failed new unit and they just played the blame game and said it was the gas hook up problem. So I called and had to pay another gas man again to check and it was hooked up correctly and set at manufacture specs and the unit will not start. They sent a Generac service man out after three months and he determined it had a bad motor and would get it taken care of within ten days and it’s been a month now and he will lot answer phone or text and no communication.

When hurricane Helene hit us here in Dearing Georgia, daily for three weeks I had to find gas stations for fuel and daily I had to carry thirteen gallons of fuel to feed my two 8500 watt generators to supply power to my home. I’m 64 years old so with that I had had enough. I called Generac and a service man came out and said due to demand it would be about three months before an install could be done. I gave him a $6000.00 deposit and two months later they were here ahead of schedule, I’m a retired electrical engineer so as they performing their job I allowed them their space to do their jobs.

I have no complaints about the portable generator I purchased. So far so good. However, I have never had such poor customer service from a company. I have contacted customer service twice now, and both times I have spoken to an elderly females that just act irritated and rude.

I am an electrical contractor with a Generac Installers certification. I would not advise buying a Generac generator. They are unreliable. They have an issue out of the box 80% of the time. They just "upgraded" the installation to be 100% via app and it fails to install correctly 100% of the time. Pick any other brand.

Generac warranty is very close to being worthless. I had my generac professionally installed and just a few months later, it was not working properly as it would quit running and show error codes. I called generac and they gave me the contact for an authorized generac maintenance company. The technician came out and found that the ground wires to the circuit board were loose from factory. I spent months trying to get reimbursed for the money that I paid for the service call and finally got only about a third of what I paid. Generac SUCKS! I would not recommend them. They are crooks! I wish I had never bought a generac. BUYER BEWARE, THEY WILL NOT STAND BEHIND THEIR WARRANTY. JUST ANOTHER RIP-OFF COMPANY!

I spend 5k a year for repair and maintenance on a 120v and a 480v generator. Both with the Ford engine and natural gas. We haven't lost power twice in the past 3 years. I pay for the yearly maintenance contract and it always costs A LOT more to find the issues and repair them. The last maintenance visit, I have had the repair guys out at least every month as they keep failing to start on the weekly maintenance start up.

Bought full house generator in September 2025. Electric went out in January 2026, generator ran for 26 hours. Then the engine died. Took over 3 weeks for new engine to arrive. February 2026 new engine installed. March 2026 it ran for 4 hours and died. Here it is 3 weeks later still waiting for Generac grievances and appeals to let me know what they are going to do. I told them this unit is a lemon and I want a complete new one and for them to add a 10 year warranty.

We own a 24kw Generac generator with three smart switches. The unit is a little over five years old. We have had to replace all three smart switches as all of them have failed. Generac admitted they were a weak component yet refused to help in any way. The customer service rep only stated that the warranty on the replacement switches is now three years where they used to be covered only for one year. Obviously, these switches are a problem and Generac has no intention of helping. Truly poor customer service and poor dependability of a component that should last much longer. You may want to look for other alternatives for standby power.

Had my Generac 9 years and the engine died 1/30/2026. It is under warranty and still haven’t had it replaced. Generac Customer Service is awful and I would not recommend them to anyone looking for a full house generator. Use anyone but Generac. Awful!!!