Quantum Solar Designs reviews

Almost two years ago SJ G. picked Quantum Solar to put panels on their home after getting quotes from four other companies. They dug into the specs for the panels and inverters ahead of time and discovered the equipment matched the high standard they wanted. The installation itself proved efficient and prompt, with crews leaving a tidy, professional job that matched the promises made up front. Over the past two years the system has delivered solid savings, and that combination of careful research, top‑quality panels, and a clean install is what convinced them Quantum was the best choice.

Tobias hired Quantum Solar Designs for a solar-plus-battery installation on his home and ended up very happy with both the work and the lead-up. He liked that the owner came out in person, provided a free on-site quote, and that the company handled the whole job without subcontractors — giving him a single point of accountability throughout the process. He contrasted that direct approach with Solar Optimum, which had offered a lower phone quote but required a down payment just to visit and finalize the price, a step he suspected would raise the final cost. The detail that made the difference for him was the no-nonsense, owner-led process and transparent pricing: clear communication and an in-house crew from start to finish.

Jn P. signed up for a rooftop solar installation from Quantum expecting it to cover the household’s electricity needs, but they quickly discovered the system was undersized. Quantum had assured them the panels would be more than enough, yet over the past five years they kept facing year‑end bills from SCE that ran into the thousands of dollars. The root cause was an underestimated monthly and annual usage that Quantum didn’t properly account for or adjust despite the homeowner’s input, which turned into a recurring financial hassle. The lasting impression: a system promised to meet demand that didn’t, leaving them with repeated large SCE bills and frustration that their actual usage was ignored.

Jason T. worked directly with Chris after discovering a leak beneath the solar array that had been installed about two years earlier. Chris showed up within 48 hours of being contacted, assessed the situation, and had his team repair the roof promptly and professionally. He walked away impressed by a company that actively stands by its installations and continues to support existing customers. That prompt response and the clean fix on a two‑year‑old system convinced him he's likely to use them again — the 48‑hour turnaround is what he remembers most.

Lori M. chose Quantum Solar for a rooftop system and, after living with the panels for a couple of years, found the whole process and outcome exceeded expectations. She discovered the installation crew worked with clear professionalism and skill, the equipment felt like top-quality panels, and the company’s team knew their stuff. Two years in, the standout result has been steady, sizeable savings on her energy bills. She walked away impressed that the combination of a well-executed install and reliable equipment produced tangible financial benefits.

RB hired Quantum Solar for a residential rooftop system and ended up with panels mounted but not permitted or working. Dawaine, the owner, showed up to collect payment, his crew installed the array without pulling city permits, and the panels sat inactive for about 2.5 years until permits were finally secured and the system was turned on. After that first visit, RB never heard from Dawaine again; the office handled all communications, sending emails that promised the owner would call but he never did. An office woman even visited the home and promised the owners would waive the remaining balance because of the delays, which RB accepted as fair — only to have the company later reverse course by email and demand final payment after months of trying to get a formal release. RB had dealt with many contractors and built or remodeled homes before, but found this pattern — unpermitted installation, a long non-working stretch, an absent owner, and a rescinded promise about payment — the clearest warning to anyone considering this company.

Kathy R. wanted reliable backup power, so after comparing several solar companies she chose Quantum. She met a father-and-son team who explained options patiently and demonstrated clear expertise. Their install crew arrived on time and finished the job in a single day, leaving her with 23 rooftop panels paired with a Franklin battery that keeps the house powered during blackouts. A follow-up walkthrough showed how to use the monitoring app to track production and battery status. She came away impressed by the smooth, professional process and the immediate relief of reduced dependence on Edison—the one-day install and battery backup were the standout details.

Dan Halpert needed a backup battery added to his existing solar array, where the PV panels sit about 120 feet from the meter box — a setup the original installer had stalled on for nearly a year. He called Quantum and they booked a site visit two days later. Dewaine arrived on time, scanned the conduit and panel run, and within 15 minutes came up with a practical solution. Quantum then scheduled an install date that allowed time for the permit and engineering reviews, confirmed the timing a few days ahead, and showed up the morning of the job with a five-person crew. They worked steadily and completed the physical installation by about 3 p.m.; the remaining work involved updating the battery firmware, which simply takes longer. Throughout the process they stayed on schedule and returned Dan’s calls and emails promptly. What he remembers most is how quickly the team resolved the long-standing 120-foot run issue — turning a drawn-out, yearlong stall into a one-day install — and leaving him impressed by their honesty, integrity, and experience.

E Anderson reached out to this solar company for follow-up after having their panels installed and ended up chasing contact for weeks. They waited several weeks before finally receiving a single email, and after that the line went dead despite repeated calls and multiple emails. The receptionist answered pleasantly, but the assigned representative, Cathy Pina, never responded to their attempts at communication. After finding similar negative reviews online, they grew convinced the company leaves existing customers without necessary maintenance or consultation. The outcome: an unresolved service request and a clear warning to other buyers that follow-up support may not materialize.