Many neighbors use Grasten for generators. I have talked with a few techs who were exceptional. I am still trying to get someone to check my tv- only one never came in after forced outage test. Starr was here and is a great representative of Grasten Generators. read more

Service! Our experience all started with our sales rep Colton. He did a great job explaining what our needs for a generator would be. He was not trying to upsell us with a unit we didn't need. After a couple of days of conversation with my wife and going over what was offered to us by other venders, we decided to go with Grasten. After doing all the paper work and paying the initial down payment, we were assigned a project coordinator by the name of Morgan. Morgan is great. We talked on the phone and then sent me an email with what needed to happen, when we needed to be home with dates and times. When I called with questions and updates she was able to talk to me right away, or if she wasn't in the office, she returned my call right away. There was only one hiccup with the project. During the final instal my tech informed us that there were a couple relay switches that were missing from the factory. My tech took pictures of the area where the switches should have been. The next morning I called Grasten's office and talked with Parts/service Dillon. I had asked him how long it would be to get the switches in. Dillon said he would call the manufacturer and call me back with an answer with getting us the parts. My wife and I we very anxious about getting the generator up and running since a storm was due to hit us that night. About an hour later, Dillon called us and said tech with the parts was on his way and should be there to our house in 20-30 minutes. When our techs showed up, they were friendly and worked very diligently to get my unit up and running. The unit fired right up and ran perfectly during testing. We are very happy with how Grasten solved a problem in such a quick manner. An A+ in customer service and I would recommend them to everyone looking for a generator. read more

6/8/2026, Had a service tech by the name of Stetson Seidel come to do a standard maintenance on our Generac 22Kw whole house generator. Stetson was professional, and did the maintenance required in a timely and efficient manner. I have been doing business with Grasten Power Technologies for a few years now, and have never been disappointed with their service. I would say Stetson is a 5 out of 5 stars, and makes Grasten Power Technology look good. A 5 star rating all the way around for today's service call. read more

This is the one year update for our Generac Generator. Right on schedule, Graston sent Brandon Cox out to do our one year maintenance. They followed up with us and scheduled the service. Brandon did all the checks and totally cleaned the machine after the required service. Graston sent a follow up email with pictures of the units output as well as the read out from the tools used by Brandon, e.g. Battery testing. I totally recommend Graston for your home and business generator needs. read more

Our service tech Jeremy Claxton came by today and checked out our system. We always have great service with Grasten. They installed our generator last year and it has come in handy a few times already. We highly recommend Grasten & all of the helpful people that work here. read more

I am not happy with the service I have been provided. Generator was installed on November 5, 2025, and the initial tests were successful. Later that day when the generator ran its own test, "an unexpected event" occurred. I called in for service as it stated in the app. Service was scheduled for November 12, 2025, and I was informed that no one needed to be onsite to service the unit. Service tech arrived on November 12, 2025, and according to the app, the "unexpected event" kept occurring. There was no communication from the service tech or the company stating what the next steps would be. I called the service line and was informed it would 24-48 hours in order for the service department to return my call. Again, this is a new unit that is failing. Why go with a company that specializes in generators if they cannot figure out what is wrong and cannot communicate. read more

We had an existing Kohler generator installed in the home we just moved into. Grasten was able to give us a reasonable price for annual maintainence and our technician, Christian, was a knowledgeable and wonderful person to work with. They serviced our generator and Christian also explained to us the different components in our generator. We are thankful to Grasten for helping us service our generator and familiarize us with our new generator. read more

Dennis at Grasten was out today and did a terrific job performing scheduled service. He was very receptive to me hovering and asking questions as he performed the service. He treated my generator as if it were his own as he checked, explained, and cleaned various parts as well as performed the loaded run test while making sure the load shedding modules functioned properly. Thanks Dennis and your work is appreciated. read more

Grasten Power Technologies - Generator Installation/Repair Near Me - Conroe, Texas

Service technician arrived on the stated time. He identified himself as Chris Jones, technician from Grasten Power and he will perform the annual service maintenance on my Generac. He was courteous and professional and invited me to ask any questions I may have on my Generac and answered the few questions I had to my satisfaction. I'm more knowledgeable on how my Generac functions and the importance of regular maintenance..Thanks Chris. read more

Adam performed our annual service and was very professional and knowledgeable. My generator was cleaned as well and I did not expect that but was very pleased! Valuable employee representing your company! Have been very impressed with all dealings with Grasten as well. read more

Dayton Robinson was awesome and timely, in fact he did the spark plugs and oil change with his eyes closed. Cleaned up and shined our generator after scheduled service one year maintenance. Highly recommend Dayton!! Eyes closed was a joke but probably could have read more

Very professional service by Jed the GRASTEN Technician. I feel totally comfortable with the GRASTEN GENERAC Generator. read more

Service Tech Jeremy Clayton stopped by this afternoon to perform the annual service on our Kohler Generator. He was very professional and answered all of my questions and completed the service as expected with care and a thorough review of everything. I'd highly recommend Jeremy for any of your generator service needs. read more

Travis was professional, knowledgeable and courteous. Thanks Travis for your visit. Look forward to the next go around. NevzD read more

I purchased the generator through Costco, and Grasten was the company they referred. I've only experienced one power outage so far, and the generator kicked in within seconds--it ran for about two minutes, but I was glad to see it worked exactly as it should. Grasten contacted me a year after installation to schedule the first maintenance. David, the technician, was knowledgeable and answered all my questions. They honored the terms of the contract arranged through Costco, I wasn't charged for the first maintenance. I highly recommend them. read more

Jed did a great job. He informed me on what he was doing. He was very knowledgeable of his job. Very profesional and polite young man.

Had initial inspection after deciding to drop from GSC (Super Center) service plan since 2009. The Grasten tech was great, on-time, and took his time to explain my options for service & maintenance from Grasten. I believe this will be a good change going forward. read more

Davin was on time and well equipped to make repair. Nice person to do business with. i recommend Grasten.

I had an annual checkup on my home generator. The did a wonderful job. The explained everything. They were the best price I had found.

David was very thorough and professional. Went over several helpful details which I appreciated very much.

DO NOT USE THIS COMPANY. The employees are incompetent and unresponsive, making our entire experience with Grasten awful. It has been 20+ days since the first day of installation and we still don't have a working generator. Upon the first installation, the plumbing crew dug into our irrigation system (see pic) and it still has not been fixed. We then failed the inspection from the city of Houston. I contacted the Grasten office about my failed inspection and only then did they send out a crew to fix the errors - this was also after they got my house confused with another house and sent wrong information to me about my project multiple times. After "fixing", the electricians said that I would not pass the 2nd inspection as the generator was installed in a location that is not permissible; by a working window. The window is extremely large so I am not sure how the sales guy (Mark) who came out on day 1 to price the generator missed it and thought this location would be good, further showing this company's incompetence. It has now been 12 days of inaction, leaving us with a broken irrigation system and trenched yard that no one can walk through. We continually call Grasten and they say someone will come out but then they never do. Additionally they do not respond to any emails, so we have had to continually call them/hunt them down. I understand that things happen along the way during a project of this magnitude but the unresponsiveness, incompetence, and lack of urgency to fix my issues makes for a bad company. I cannot recommend and have told my neighbors also seeking a generator to go with anyone but Grasten read more

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Jeremy did a full maintenance on our 27KW Generac generator. He also transferred power to make sure everything was in working order and cleaned the unit before he left. Great job. Thank you. read more

Stetson is my tech and he is the best. Got me back up and running. No bullshit up charges. He just fixes everything. Still under warranty so everything is covered for parts. You might think the maintenance yearly cost is high but not when you are out of power!!! Generacs are good products but they must be maintained. This is non-negotiable. read more

Everything went well! He Called beforehand as requested, quickly assessed the problem, checked the wiring, clearly explained the solution and went to work. He had all the right parts and equipment. He got the unit running and tested it. Very pleasant and professional. Sorry the prior Grasten contractor made a mistake in n the installation of the brand new unit, but McKay solved the problem. Thank you. read more

Surprised they have low reviews. Makay, my service technician did an awesome job. Answered all my questions and did the job that was required! I will say they could work on their service call center just a tad but I got what I needed and questions were answered read more

David was wonderful and professional. So happy with customer service They performed our generator maintenance and were thorough and showed up on time. read more

Excellent experience with this company, beginning with the very first call. Jed did a fantastic job on our first service call. Great work and communication. Highly recommend. read more

Stetson with Grasten was very nice and kept me informed of my generator service along the way. Thank you for the great service! Joe B Spring TX read more

Horrible company. Several days ago suppose tobmaintence for which I had paid. Kid showed up supposedly to do. Had Moore services today. Gasten never checked oil which was low because gage out. Never changed air filter which they said they had. When emergency occurred two years ago --disappeared when gen failed. Employees hate them. read more

I purchased one Generator from Graston several years ago. I pay for the service contract every year in case there's a problem and they won't come out and address it. They do come started every few months... I have been very loyal to them no more this past weekend, my power was out all day Sunday. My generator never kicked on. It's not a natural gas item. Natural gas is working. I called on Monday. I got the oh well we'll put it on the schedule and we'll have somebody come and address it. Well then I was told that would be here on today which is Thursday then I get an email. Can't even bother a call. I just sent an email and says oh no we won't be there till Friday now I am going to try to find somebody else who I want. I'm sure I will have to pay that only service charge or whatever the repair fees are in addition to the $500 a year service fee that I pay I no longer I have referred so many people to them and I'm sure they don't make any money off of the ladies like me and their friends, but please take twice about employing these people that sell force of very good and they yell that installation of people are very, very good, but that was several years ago. The follow up at the service that the old Southwestern Bell horrible read more

Landon was very courteous and helpful. He took the time to help me with a connection issue.

They do a thorough job of checking the generator on maintenance checks. Technicians are always so nice and glad to answer any concerns. We are so glad that went decided to use Grasten when we decided to make the purchase. No complaints here . Thanks for always providing great service. Vicky and Bob Hawkins read more

Steve did a great job. Very knowledgeable and professional. He walked me through all the ins and outs of my generator as well as the new app for my phone and even took the extra time to point out a few things I was unaware of. Also, I have to give a shout out to Jason Smith who helped me through all this. My current (now fired) generator service was not helpful at all. Great job Grasten!!!! read more

Carlos is very knowledgeable and experienced with Generac generators. He explained the issue to me in terms that I could understand. Gave several options to repair and acknowledged which option was the most expensive. I really appreciate him and if we need another repair man, I will ask for Carlos! read more

Samuel Rojas was my Technician. He was new but GREAT. Called when on his way and I explained my problem, which I believe Jason, had already let him know too. Issue was resolved. Battery changed and all good now. Grasten installed my Kohler Generator in August 2019 and I have had no issues with the Company. Any and all their employees, from calling in for repairs or just normal maintenance, have been courteous and informative. Thank you Grasten!! And Jason too!!! read more

Thank you Jeremy for the excellent and professional service you provided. We are confident that we will enjoy our generator for many years! Thanks also for answering questions we had regarding maintenance! You went above and beyond and we truly appreciate that! read more

A quick review of the latest schedule maintenance call performed by Davin McGraw. Appointment was set up quickly by the service department. Davin called before arriving. He was prompt and his work was very professional. Would be glad to have him back for future service visits. Report was thorough. Great service call! read more

This is our second generator purchased from Grasten Power Technologies, and I have to say they are incredibly fantastic! Thankfully, our generator ran flawlessly for 52 hours during our recent storm and power outage of May 2024 in the Cypress, Texas, area. Today, we had an unscheduled service call due to a parts failure. A terrific service technician, Mr. Sam Hanner, came and took care of the repair and stayed until after 8:30 p.m. until the repair was completed. Not only did he repair the Generac Generator (still under warranty), he made a special trip to the local automotive parts store to get some hose clamps to ensure that all the hose clamps were properly secured and cleaned the unit like new. I thank Sam for his integrity, caring, and customer service. I cannot say enough great things about Grasten Power Technologies and their outstanding service. Thank you! read more

Great sales people. HORRIBLE hot mess in their office, scheduling, installing...ANYTHING that requires basic communication and coordination. Prepare to have them require you to be onsite at least 8 times to get the unit installed over the better part of a month (not just because an inspection that didn't pass, but because of sh&t like they are coming out to install a kill switch on the unit, the guy shows up after you take off work and plan to be home, and whoops...he "forgot" the kill switch at the office.) Or they don't call the correct phone number that's on the account so they are leaving a message that they are "coming by on Tuesday" with someone who will not be able to respond or be home. We asked them 3 times to change the phone number, but the old one was left in 3 other places in their system so...) So now the repeat inspection that was scheduled for tomorrow won't happen because the kill switch won't get installed today. "Well, can you come by tomorrow morning early so you can install the switch before the inspectors come?' "Hmmmm, you'll need to call the office for that, they handle the scheduling." Call the office? Hope you have carved out 20 minutes so in between being on hold 7 minutes at a time, your call can be picked up by at least 3 different people who don't know why you called so you get to explain it again. If it's an average day, you'll also get to hear their coworker on speaker phone talking to yet another irritated customer who is calling in to get help on the same kind of BS you called in about. Ahhh, at least it's not you. Grasten is partnered with Costco, so if you request a generator quote from Costco, this is who might come out. read more

I set an appointment 3 weeks in advance to ensure prompt arrival of technician at 9 am so I would not have to wait. The company is bold in that they require us to Pre Pay for the service when we schedule. On the day of the appointment I had not received confirm and when I called in to the office they said the technician would arrive in about one hour. This was just for a standard servicing of my generator. Promptness is a key indicator of integrity and quality performance. Unfortunately my first experience has been a failure. read more