Grasten Power Technologies

Reviews

• RA

  Richard Arnold

  4 days ago
  1.0
  Extremely disappointed with the customer service from Grasten Power Technologies. I found them through a Costco generator installation promotion. A rep came to my house, took down all the specs for the installation, and said he needed to check with his manager before providing an estimate — promised a follow-up within 24 hours. That never happened. A week later, I called and was told they'd follow up with the sales rep and manager. Another week passed with still no response. Two weeks completely wasted waiting on an estimate that never came, when I could have already had a generator installed with a company that actually follows through. If this is how they handle a simple estimate request, I'd think twice before trusting them with an actual installation. Would not recommend.
• MH

  Michael Harding

  Aug 11, 2026
  5.0
  If everything works and comes back on line with power failures and the solar interface, the tech did a great job. Those of us who have had a backup generator for 10 years or more it is great when they work and not so great when it doesn’t come online. I am one who has to have one, but we know the generator is not as simple as advertised. Don’t get me wrong. I would rather have one than not!
• BL

  Blake Lovelace

  Aug 10, 2026
  3.0
  Not sure I can score this any better! The technician told us we needed a new battery that I had just replaced in January. After we called the office and were told it was under warranty the technician suddenly indicated that his battery tester was giving a bad reading? We didn’t get a new battery so I hope the next time we need the generator to start it works or Grasten will be sending a technician whatever time of day it happens at no charge!!
• DM

  Dale Marsico

  Aug 6, 2026
  5.0
  I had my annual generator service from Grasten Power Technologies earlier this week. Chris Parker was the technician who did the service. Chris did a conplete examination of my generator, including the electrical and fuel systems. I received a complete written report on everything he reviewed and serviced. Overall the service was excellent and Chris was easy to work with and addressed all my questions and provided easily understood information. I’ve had an ongoing relationship with Grasten for a year now and consider them A+++ as a business and service provider.
• LL

  Lydia News (Lydia)

  Jul 29, 2026
  4.0
  Overall, I had a very positive experience with Grasten Power Technologies and would absolutely recommend them. Phil, the salesperson, was knowledgeable, professional, and never made me feel pressured. He was responsive throughout the process and took the time to answer my many questions. The installation itself went very smoothly, and every contractor who came to my home (including the electricians, plumbers, concrete crew, and startup technician) was courteous, skilled, and did excellent work. The quality of the installation has been outstanding. Reason for 4 star and not 5. As the project was wrapping up, the concrete still needed to be repoured before everything was complete. I wasn’t comfortable making the final payment until the entire project was finished. I called Grasten, and Brandy completely understood my perspective as a homeowner. She was professional, understanding, & offered a very reasonable solution by allowing me to withhold $500 until the project was complete. After the concrete was repoured, I checked the Mobile Link app & noticed it showed the generator in Service Mode, even though the generator itself was in Auto mode. Since one of the primary reasons I chose Grasten was the ability to remotely monitor my generator through the Mobile Link app, this concerned me. The app specifically indicated that notifications would not be sent and that several remote monitoring and management features were unavailable while it remained in Service Mode. I simply wanted to confirm that the generator & the app were communicating correctly and that all of the features included with my purchase were functioning before making the final payment. When I called back, I spoke with Shawanna in billing. I explained that I wasn’t refusing to pay & that I simply wanted to verify that the installation was fully complete and that all aspects of the system I purchased, including the remote monitoring features, were functioning properly before making the final payment. During our conversation, I felt that I was repeatedly interrupted and wasn’t being given the opportunity to explain my concern. When I pointed that out, Shawanna told me that I was being disrespectful. Throughout the conversation, the focus seemed to be solely on collecting the remaining $500 rather than helping me resolve my concern or connecting me with the service department. She told me I would not be allowed to speak with technical support until the balance was paid and that I could “call back when I was ready to pay.” I found that frustrating because I was simply trying to verify that the installation (including the Mobile Link features that were part of my purchase) was functioning properly before making the final payment. Once I paid, I was transferred to a service technician who was friendly, knowledgeable, & resolved the issue within just a few minutes. Maybe go through COSTCO to prevent this? They contract with Costco so that may offer some protection. Aside from that interaction, everyone I worked with was outstanding. Phil, Brandy, the installation crews, and the service technician were all professional, courteous, and excellent to work with. The workmanship was top-notch, the project was well organized, & the installation exceeded my expectations. My only suggestion would be to reconsider the policy of requiring final payment before allowing customers to speak with technical support when there is a legitimate question about whether the installation has been fully completed & all included features are functioning as intended. Allowing customers to verify that the generator and its monitoring system are fully operational before collecting the final balance would make an already excellent customer experience even better. Overall, I would recommend Grasten to anyone looking for a whole-home standby generator with a warning about their billing department. Their installation team & field personnel were exceptional, & with a small improvement to the end-of-project billing and customer service process, this would easily have been a 5-star experience.

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