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Grasten Power Technologies LLC

Generator, Electrical

About us

Automatic standby generators offer dependable protection during unexpected power outages. With a complete line of residential and commercial generators as well as transfer switches, we can provide the ideal solution for you. Safe, reliable, automatic backup power for your home or business that lets you live your life without interruption.

Business highlights

19 years of trusted experience
Emergency Services Offered

Services we offer

Electrical Generators Standby Generators Automatic Standby Generators Generator Service and Repair

Services we don't offer

false

Amenities

Free Estimates
Yes
Warranties
Yes
Emergency Services
Yes


Accepted payment methods

American Express
Check
Discover
Financing Available
MasterCard
Visa

Reviews

4.465 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
69%
4
12%
3
6%
2
5%
1
8%


Rating CategoryRating out of 5
quality
4.6
value
4.5
professionalism
4.5
responsiveness
4.4
punctuality
4.5
Showing 1-25 of 65 reviews

John S.
08/2024
5.0
generator service
  + -1 more
They professionally installed my home generator, explained everything to me, and have excellently provided scheduled maintenance. I have been extremely pleased with everyone in the company whom I have dealt with
Description of Work: Installed my generator and have done scheduled routine maintenance. Everyone at the company has been a pleasure to deal with.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$12,300

Randy W.
07/2024
2.0
generator service
  + -1 more
They orginally installed our generator 4 years ago. We have paid them for maintenance for the past for years. As long is there is no emergency they are ok. But if you need them in an emergency good luck you are on you own, you may want to consider others to be there when you need them.
Description of Work: The have installed and maintained my generator for 4 years.

Rating CategoryRating out of 5
quality
3.0
value
4.0
professionalism
3.0
responsiveness
1.0
punctuality
3.0


Response from Grasten Power Technologies LLC
We are truly sorry for any delay, WE had over 25,000 calls come in one week and doing our best to work through them. I will personally reach out today to check on your request.

Richard S.
07/2024
1.0
generator service
  + -1 more
Still awaiting installation. First contacted supplier in April. Salesman over promised and under delivered. Poor communications. When we asked questions about the status we got misleading "cut and paste" answers. When someone called they were aggressive and full of excuses. Not conciliatory or helpful at all. Had to go to City ourselves to get permit issued. Still waiting.......more excuses.....
Description of Work: Install new backup generator

Rating CategoryRating out of 5
quality
4.0
value
5.0
professionalism
1.0
responsiveness
1.0
punctuality
1.0

$9,000

Response from Grasten Power Technologies LLC
Mr. [Member Name Removed] is one of the most abrasive customers we have ever met. Made our permit tech cry with his harsh demeanor and talked to the owner like he was 4. We are withing the 9 week lead time we quoted to start this project and have explained the permit process is more than dropping off a permit. The city requires Centerpoint engineers approval for the transfer switch. Normally this is a 48 hr turn around, after the hurricane more like a 2-6 weeks turn around. We received their approval the day before hurricane and it took us a few days after to drop off the permits.

john O.
07/2024
1.0
generator service
  + -1 more
The worst company I have dealt with. Failed to fix before or after Beryl till cp already on despite life threatening situation/warranty -maintenance/repair contract.
Description of Work: After buying generator it kept shutting off. Needed repair pretend post-storm

Rating CategoryRating out of 5
quality
1.0
value
1.0
professionalism
1.0
responsiveness
1.0
punctuality
1.0

$32,000

Response from Grasten Power Technologies LLC
Grasten fixed your generator 24hrs after you called on Monday night of Hurricane Beryl. Customer is upset he could not get through the lines for several hours due to communications being down. We helped 1000s during the storm, unfortunately for some it wasn’t enough.

Wale A.
07/2024
1.0
generator service
  + -1 more
This is one of the worst service companies out there. I purchased a 38kw generac generator, including a 3 year service plan. When I needed them to actually service my generator, I couldn't even get someone to give me a call back. I contacted the sales guy and all he could say was that it wasn't his department. This has been my worse customer service experience for such a big ticket item.
Description of Work: Generator Service

Rating CategoryRating out of 5
quality
1.0
value
2.0
professionalism
1.0
responsiveness
1.0
punctuality
1.0

$28,000

Samir D.
02/2024
1.0
generator service
  + -1 more
I usually don’t have time to leave a review because I have 5 children with 4 of them being under 5 years old and one being autistic; but since Grasten Technologies decided it was okay to take advantage of me, I have decided to make the time to review. First of all, I’d like to say that the communication was non-existent as soon as I paid my deposit (text are between me and sales rep in pic). Their contract states 4-6 week to begin installation, I haven’t even heard from anyone on the 6th week to even let me know what’s going on. I wish that I would have been able to cancel and go my separate ways. Secondly, just about every time their contractors came out, they broke something. They destroyed my yard (I spent $1500 recently for new grass), one of the reps that came out he warped my door that opens (fence is about 2 months old), he apparently just kept pushing on it since there is a specific way to open it. Lastly, the electrician was dishonest, there was a outlet where they put the transfer switch that was going to be removed but it was covered up; I found out after the outlet tripped since it is on a GFCI circuit, I have two other outlets on the outside of the house that currently have no power (see contract where it says they are supposed to remove outlet). The electrician that came out and said he removed the outlet but he wasn’t even the original electrician that did the install. If Grasten responds that they complete the task of removing outlet, please provide pics since y’all take pic of everything anyways so you can process your loans with subpar work. DO NOT USE THIS COMPANY as they are dishonest and don’t stand behind their product.
Description of Work: Standby Generator

Rating CategoryRating out of 5
quality
1.0
value
1.0
professionalism
1.0
responsiveness
1.0
punctuality
1.0

$13,500

Brad W.
09/2023
5.0
I had problem with Grasten. I did get a call from the owner of Grasten and got the problem resolved. Means a lot when the owner calls you.
Description of Work: Maintaining my generator

Rating CategoryRating out of 5
quality
5.0
value
3.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$1,032

Frank L.
05/2023
5.0
generator service
  + -1 more
I used Grasten to purchase and install a whole house generator and have had it for 6 months. The entire process went well and today they came out for the 6 month maintenance check. Through out all of this the company and technicians have been easily accessible and communicative and I have had no problems. I researched them before hand and it looks like I made a good choice. Can't speak for those that have left bad reviews but my experience has been great so far. The two technicians that came out today were friendly, knowledgeable and answered all my questions.
Description of Work: Maintenance

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Eric K.
09/2022
3.0
electrician
  + -1 more
The company seems to ignore my requests. It was going so well since Dec 2019, but now the service is not the same. I am disappointed.
Description of Work: rewire the upstairs air conditioner so it run again. I ask for the wiring to by pass the Gererac generator. Jason said it can be fixed by me if I open the box and pull the green wire. I am not an electrician so I did not do it. The house is being sold and this could jeopardize the sale. The buyer is concerned. And so am I. This has been going on for over two weeks.

Rating CategoryRating out of 5
quality
4.0
value
3.0
professionalism
3.0
responsiveness
2.0
punctuality
4.0


Ken L.
07/2022
5.0
electrician, generator service
  + 0 more
Installed generator. All of the guys that came out to my house were awesome, everyone of them gave me their cell phone number and said if I need anything Do not be afraid the call. The office on the other hand, Doesn’t communicate well and seems to be unaware of the next step needed. This is a great company and did a good job. Would Refer them to friends and family.
Description of Work: Installed generator

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Ray M.
01/2019
4.0
generator service
  + -1 more
Took several trips to detect real problem of intermittent shorting. Once found, was able to replace wire and some components to operate again. Some warranty work was also performed.
Description of Work: Repair generator which ran continuously on AUTO mode.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$2,500

Jack T.
07/2018
2.0
electrician, generator service
  + 0 more
After a phone discussion, a bid was offered. I asked that it be emailed to me. It took 25 hours to arrive (I even inquired about it at the 5 hour mark). The bid was $600 higher than the verbal bid. No explanation for the increase was offered. I specifically asked (during the phone call) if his bid included sales tax and if it included everything (turnkey). He said yes. It also said there would be a 7 week lead time, despite the fact that I had pointed out that my motivation was the imminent arrival of the worst part of hurricane season (Aug and Sept.). That 7 weeks (plus the installation time) would have put it into October. I felt disrespected by the whole experience.
Description of Work: Installation of a whole house standby generator

Rating CategoryRating out of 5
value
3.0
professionalism
2.0
responsiveness
3.0
punctuality
2.0

$11,000

Response from Grasten Power Technologies LLC
We apologize our lead time is 7 weeks, the entire standby generator industry is expecting the same issues right now, quotes given over the phone can only be so close. The customer changed his gas line from 100 ft to 120ft and let us know Hughes gas was his gas provider which charges an additional fee for inspection. Once these items were applied the cost went up by $500. We are still the best priced in the industry. We talked on the phone Friday afternoon, the formal quote was sent Saturday mid day. Our sales people are in the field all day and sometimes don't get home or to office until late evening. I sent the quote personally early Saturday noting a 7 week lead time. This is what upset the Customer. We apologize for the delay of 24 hrs to recieve bid as well as our 7 week lead time. July/August are the two busiest months in the industry, it's a common issues in our industry for the lead times to exceed 7 weeks. Our only sizeable competitor is 8 weeks as well. The alternative is to sub contract the work out which we do not do in order to maintain quality. All of our installers are seasoned in house professionals. We wish you the best on your install and if you need any help or assistance we are here to help.

Mark R.
02/2018
5.0
generator service
  + -1 more
Great! Very professional, prompt and complete!
Description of Work: After Hurricane Ike we got quotes from several whole house backup generator companies. We went with Grasten because of their competitive pricing, attention to detail and courteous sales associate. We were very happy with the installation and the ongoing service has been great. Highly recommend them!

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Steve Y.
01/2018
4.0
generator service
  + -1 more
In the end all is good. However, they did have coordination issues with their subs (electrical). As such there were several times where they did not have what they needed or did not come when they said they would. In addition the first generator they delivered was the wrong one! However, in the end they were professional and completed the job. I believe their intentions were always honorable
Description of Work: Generator install and transfer switch

Rating CategoryRating out of 5
quality
4.0
value
5.0
professionalism
4.0
responsiveness
4.0
punctuality
3.0

Yes, I recommend this pro

Ronald L.
01/2018
5.0
generator service
  + -1 more
Installation was professional and quality was good. Only issue was scheduling - did not arrive when they said they would. Communication should have been better.
Description of Work: Installed a standby generator.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
4.0

Yes, I recommend this pro
$14,000

Lance H.
11/2017
5.0
generator service
  + -1 more
They handled all permitting and communication with power and cable companies to mark lines before branching. They were careful and performed well.
Description of Work: Provided, solid quick estimate and installed 2 weeks later as they committed.

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$10,000

Cheryl K.
08/2017
5.0
generator service
  + -1 more
Went well and we are pleased with the end result
Description of Work: Generator Installation

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$12,000

Garret H.
05/2017
5.0
generator service
  + -1 more
They were awesome. Very knowledgeable and understanding. The generator was a newer model and didn't come with a feature that the older units came with and I wanted. They made it right, no problems. Very professional throughout the whole process. Kudos to the Sales, Electrician, Plumbers, and the Tech for the initial startup and briefing.
Description of Work: Had the folks at Grasten install a whole home Generac system.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Kathy H.
03/2017
5.0
generator service
  + -1 more
always prompt. Courteous, timely. Can't say enough nice about this company. Highly recommend
Description of Work: Generator repair and maintenance

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

SUSAN V.
03/2017
5.0
generator service
  + -1 more
Perfectly. We have had a generator maintenance and service contract with Grasten Power Technologies for quite a while now and have experienced only professionalism, kindness, timeliness, and high quality work performed. We highly recommend this company.
Description of Work: Routine service under maintenance contract

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Bruce E E.
03/2017
5.0
generator service
  + -1 more
I have used Grasten Power Technologies for the past three year for their twice a year maintenance on our generator. They are always very prompt and professional. Will use them again.
Description of Work: Annual Maintenance

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$325

Marjorie O.
02/2017
5.0
generator service
  + -1 more
While the process takes time due to the utility connections, Grasten personnel stayed on top of the process once a couple of initial kinks were resolved. (Key person was without a phone for a couple days). Each group of installers was professional and the end product looks and works great.
Description of Work: Purchase and install whole home generator

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$8,500

Melissa P.
01/2017
5.0
generator service
  + -1 more
Fast, knowledgable, friendly, reliable, fair priced. Highly recommend!
Description of Work: Generator repair

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Rick B.
01/2017
5.0
generator service
  + -1 more
Very well, the tech was great, very professional and did an excellent job
Description of Work: Service my generator under maintenance contract and then replace worn out parts

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$475

Dennis J.
06/2016
5.0
generator service
  + -1 more
ALL companies should be as good as Grasten, very, very knowledgeable and professional people! I am on oxygen 24/7 and if our power goes out, my oxygen concentrater can't run and I can be in big trouble. My battery run portable only lasts a few hours. So, when our backup generator died we needed a quick replacement. The company we had been using said 2 to 4 WEEKS. I called Grasten and was amazed when they said they could do it the NEXT DAY. And they DID! Showed up about 8:30 am and finished by about 10:30. You cannot even imagine my relief. Extreme emphysema means I absolutely must have the oxygen and the AC. Start to finish, all the people in office and on site, everyone know EXACTLY what to do and how to do it. It was actually a pleasure working with everyone at Grasten. Customer service was the absolute best I have ever experienced ANYWHERE. I cannot say enough good things about them. I absolutely recommend them! ! ! ! !
Description of Work: Replaced a 17K backup generator that had died on us and added whole house surge protector.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$5,000
    • 1(current)
    • 2
    • 3

Contact information

10890 Highway 242, Conroe, TX 77385

http://www.grastengenerators.com

Service hours

Sunday:
Closed
Monday:
8:00 AM - 5:00 PM
Tuesday:
8:00 AM - 5:00 PM
Wednesday:
8:00 AM - 5:00 PM
Thursday:
8:00 AM - 5:00 PM
Friday:
8:00 AM - 5:00 PM
Saturday:
Closed

Licensing

Bonded

Insured
State Contractor License Requirements

All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our State Contractor License Requirements page.

*Contact business to see additional licenses.


Service Categories

Generator,
Electrical

FAQ

Grasten Power Technologies LLC is currently rated 4.4 overall out of 5.

Sunday: Closed

Monday: 8:00 AM - 5:00 PM

Tuesday: 8:00 AM - 5:00 PM

Wednesday: 8:00 AM - 5:00 PM

Thursday: 8:00 AM - 5:00 PM

Friday: 8:00 AM - 5:00 PM

Saturday: Closed

Grasten Power Technologies LLC accepts the following forms of payment: American Express,Check,Discover,Financing Available,MasterCard,Visa
Yes, Grasten Power Technologies LLC offers free project estimates.
No, Grasten Power Technologies LLC does not offer eco-friendly accreditations.
No, Grasten Power Technologies LLC does not offer a senior discount.
Yes, Grasten Power Technologies LLC offers emergency services.
Yes, Grasten Power Technologies LLC offers warranties.
Grasten Power Technologies LLC offers the following services: Electrical Generators Standby Generators Automatic Standby Generators Generator Service and Repair
false

Contact information

10890 Highway 242, Conroe, TX 77385

http://www.grastengenerators.com

Service hours

Sunday:
Closed
Monday:
8:00 AM - 5:00 PM
Tuesday:
8:00 AM - 5:00 PM
Wednesday:
8:00 AM - 5:00 PM
Thursday:
8:00 AM - 5:00 PM
Friday:
8:00 AM - 5:00 PM
Saturday:
Closed