1. Guasti Solar

1. Guasti Solar

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Oak Hills, CA

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Guasti Solar

4.7 (7 reviews)
Open • 8:00 am - 5:00 pm

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3 years ago

Great family own small business did a wonderful job installing my solar system. I highly recommend Guasti.

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9 years ago

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10 years ago

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8 years ago

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7 years ago

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10 years ago

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8 years ago

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Option One Solar

Option One Solar

4.9
(73 reviews)

This experience was exceptional! The company that installed my system has gone bankrupt so Tesla…read moredirected me to its trusted installers in the area. I picked Option one right at the top. Natasha was professional and very clear with communication from the start. She set proper expectations on communication with Tesla would take a week or two. The day she received the go ahead from Tesla she called and scheduled the install asap 4 days out. Later the same day they had a cancellation and were able to get everything scheduled the next day. Anthony and Jeremiah arrived at the beginning of the arrival window! They were professional, great with communication, and ready to work. I had several questions and they were prepared for all of them and super helpful. The battery removal and install took less than an hour. Naturally Tesla's update took twice as long. LOL. Still total time was under 3 hours. I have managed 100s of installers and worked in Solar, this was a fantastic expierence! Because the Tesla 3 has more storage than the 2 I asked about adding some of my Breakers to the back-up and they had options for us to do that. Obviously we Highly Recommend This Team!

Final Update: I just had Option One out at my home today to replace my inverters and I'm very happy…read moreto report my system looks to be back to fully working. The installers were awesome and got me going quickly. So regarding the communication issues I had with the company, things happen, people get busy and sometimes delays do occur. I'm just glad we were able to get everything resolved. Pricing, I did get a couple of additional quotes and Option One blew them out of the water. Could it be those other companies assumed I needed the parts and labor? Maybe, but I was very clear that I had the parts already. Bottom line it never hurts getting quotes and going from there. Service, so I got all the paperwork done yesterday early afternoon and was scheduled today (5/1) at 8am. I do realize there needs to be a buffer between appointment time and actual arrival time, I usually just assume an hour after the appointment time. But the techs were here at almost exactly 8am. As I have very limited knowledge on solar panels, the fact none of them fell off my roof (panels or techs) and nothing blew up, then it's safe to say they did a fantastic job. In the end my system is fixed and I'm happy. Also if I ever need work done on my system again I'm calling these guys up.

Solar 360 Building Services

Solar 360 Building Services

4.3
(291 reviews)

After years of getting different high pressure solar companies to come give us their spiel and then…read morenot feeling very comfortable with taking the leap into solar, we finally did it with Solar 360. The company and Sales Representative, Sherry Farrell, came highly recommended to us. Once contacting her, she was quick to respond, set up an appointment and present us with a proposal. From start to finish, the entire process was seamless and professional, largely thanks to Sherry's outstanding efforts. Sherry's expertise and dedication were evident from our very first interaction. She took the time to thoroughly explain all the available options and made sure we understood every aspect of the installation process. Her friendly, disarming demeanor and willingness to answer all or our questions truly put us at ease and gave us the confidence in our decision to go with Solar 360. Sherry worked with our HOA to help get us through the process. She made it so easy for us. Now that the installation is complete, Sherry continues to provide us with proactive communication so we know what to expect with our energy bill and our overall system. The installation team was equally impressive, displaying professionalism and efficiency throughout. They arrived on time, worked diligently and left our property spotless upon completion. Installation only took 3 days. We are very thrilled with the results. We highly recommend Solar 360 Building Services, particularly Sherry Farrell, for anyone considering solar energy solutions. Her exceptional customer service and dedication to excellence make an invaluable asset to the company. Thank you, Sherry, and the entire 360 team for providing such a positive and rewarding experience.

They are out of business and unable or unwilling to respond to messages. Looking for a new firm to…read moremaintain my system.

SolarMax Technology

SolarMax Technology

3.9
(381 reviews)

We had our solar panels installed by SolarMax and our overall experience has been very positive…read more  From first contact to ongoing customer support, SolarMax has exceeded our expectations. We were fortunate to have Ruben G. as our Account Manager.  Ruben was professional, pleasant and knowledgeable -- carefully listening to my questions and concerns and also sharing knowledge so I could better understand the phases of installation. Throughout the entire process - from design to permits, documentation to electrical requirements, we communicated with the various SolarMax team members to make sure we understood what the next steps would be. Every team member was courteous and competent, all of them did their part to complete our solar panel and battery project. We are happy with the service and expertise SolarMax has provided us and would recommend them to friends who are considering solar energy.  To Ruben - our renewed thanks!  We appreciate you for your work. To the entire SolarMax team - thank you for making this happen!

Update: received a detailed response on 2/26 along with the note below from Nicole that they were…read moreshort staffed. Update: I emailed them on 2/23 as requested by Nicole. Will update when I hear back. Would not recommend SolarMax at this point until they improve their customer service. Look into other companies and their service reviews since you will most likely have to contact them multiple times with questions about the system/billing. They were very prompt and quick with reaching out and getting back to us when they were trying to sell us solar. However, now that we have been customers for years and our sales rep left, it takes multiple calls to even get through to customer service and then multiple follow up calls after since they have to email other departments to get an answer and do not call back. It seems like they are short staffed and for a big company like this should invest in more staff for customer service. That way they can provide the same experience we received in the beginning. It's been almost a month after I initially contacted them and my question still has not been answered. Seems like there is only one customer service rep and she definitely needs help.

Guasti Solar - solarinstallation - Updated July 2026

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