Alcor Solar Specialists reviews

Lisa D. first had Alcor install a solar pool heating system about 15 years ago, and when it finally needed replacement she went straight back to them. With the old system out of commission her pool sat around 72°F—too cold for her and her granddaughter—so timing mattered. Alcor’s office coordinated the work to fit her schedule (Sue handled the booking and stayed responsive), then sent two technicians—both named Joe—to do the job. The crew removed the old panels on Tuesday and had the new system in place by Thursday, answering her questions and working neatly the whole time. One day after installation, during a heat wave, the pool temperature climbed to about 80°F and she could swim again. What stuck with her most was the quick, tidy two-day swap and the reliable scheduling from Sue, plus the friendly, efficient work of the two Joes.

Donald L. has lived in his house for close to 30 years, so his original solar collectors were about that old. Over the decades Alcor kept the aging system running through occasional leaks and repairs, and when it finally needed replacing he shopped other bids but stayed with the company — their price was competitive and he already trusted them. He ended up with new panels mounted on top of a new roof, a job that required a lot of back-and-forth between the roofers and Alcor, and the system is working as promised. He singled out Sue in the office for being great, and what lingered most for him was how smoothly Alcor coordinated the roof and solar crews — he walked away with a neatly integrated system and a dependable point of contact.

Patrick M. hired this company to install Solar Industries (Aquatherm) pool collectors on his Contra Costa County home and ended up frustrated by the whole process. He ran into a scheduling nightmare—appointments kept slipping and Al became visibly irritated whenever he asked for firm arrival times so someone could access the roof. Email exchanges with the owner felt unstable: the crew misplaced his payment, refused service while it was “missing,” then later located the check and insisted on cashing it before agreeing to address manufacturer defects. Because the company holds exclusivity in the area, he felt trapped without a nearby alternative. Neither the installer nor Solar Industries stood behind the work; after four years the collectors had caused roof leaks and now a valve has failed. The detail that stuck with him: the company demanded they cash a misplaced check as a precondition for fixing defects—enough for him to advise looking for a more reputable, stable pool-solar installer in Contra Costa County.

Angela first turned to Alcor Solar in the 1990s when her family installed pool solar panels, and stayed with them when a roof replacement in 2013 meant updated pool panels were needed. Over the years Alcor kept coming back for maintenance, and most recently they came out to repair a leaking panel. She found the team consistently responsive and honest, and that willingness to go the extra mile showed up on every visit. The detail that stood out above all else was the personal touch — Al remains the technician she calls when something needs fixing, and his attention is the reason the family has kept using Alcor for decades.

Tom G. hired Alcor to replace the existing solar panels on his pool. He found the team professional and the process easy to follow — Sue, the office manager, made scheduling and coordination effortless, and Joe, the lead technician, took care of the on-site install and walked him through the setup. The hands-on support from Sue and Joe left him with a neatly replaced pool system and clear instructions on how to operate it.

Patrick signed up for a roof-mounted Solar Industries (Aquatherm) collector system and found the experience frustrating from the start. He ran into constant scheduling headaches, and Al became visibly irritated whenever he asked for a specific time so crews could access the roof. Email exchanges with the owner felt erratic; at one point they misplaced his payment, refused service while it was “lost,” then later discovered the check and asked him to let them cash it before they would address manufacturer defects. Because they’re the exclusive installer in the area, he felt trapped dealing with a company that wouldn’t stand behind the installation or the Solar Industries warranty. Four years after installation the collectors caused roof leaks, and now a valve has failed — problems the company declined to fix without that contentious payment resolution. The clearest red flag for him was the lost-payment episode and the owner’s uneven communications: the business didn’t behave like a reliable warranty partner when defects showed up.

M. A. shopped for pool solar in the Bay Area and narrowed the choice to two companies, Alcor and Diablo. They ended up installing an Aquatherm pool-solar system with 10 collectors in September 2015 on a roughly 700-square-foot pool at a south-facing roof in south Livermore. The panels stretched the swim season — the family consistently enjoyed comfortable swimming from late April through early October — and the system stayed in place through the summer of 2018 when they sold the house. Most of the sales exchange happened over email and phone, but Al personally came out to measure the roof and inspect the existing pre-plumbing. He offered the best price and took a straightforward, no-nonsense approach. Because Al owns the company and acts as the sales lead, overhead stayed low and he had a direct incentive to make the installation right. The memorable detail from their experience was that owner-run structure: a hands-on proprietor who measured the site, priced the job competitively, and delivered a reliably longer swim season — a practical outcome that saved time and money for a Bay Area homeowner.

Thomas W. had Al's crew put a pool-heating system on his new roof on 6/25/25: ten 4' x 12' panels and two 2' x 12' panels, paired with a Pentair controller. He came away impressed by how neatly the panels sat on the roof and by the tidy controller installation that plugs directly into his pump. On a 92°F day the system warmed 30,000 gallons of water from 78°F at 8 a.m. to 84°F by 3 p.m.—a bit warm but still refreshing. Having lived through two previous solar installs over 34 years, he found Alcor’s workmanship far superior and intends to use them again. The detail that stuck with him: immaculate roof work and a simple plug-in controller that produced a clear 6°F gain across a large volume of water.

Mauricio S. ended up with a sharply mixed experience: a standout technician and a frustrating runaround from the office. He needed a repair on his solar‑pool plumbing, and when Joe finally showed up he diagnosed and fixed the problem in minutes — professional, efficient, and friendly enough that the service itself deserved five stars. The trouble began long before that visit. He reached out to the front office by email on April 16 and got a response from Sue, but replies dragged and stayed vague; he couldn’t get even a ballpark estimate without repeated follow‑ups. A final email asking to schedule went unanswered, then three weeks later Joe called on May 6 saying he was eight minutes away — Mauricio had no idea he’d been booked and was lucky to be home. The takeaway: the hands‑on tech work is excellent if you can secure Joe’s time, but expect shaky communication and surprise scheduling from the office; the image that lingers is Joe arriving unannounced and fixing everything in minutes, after a stressful few weeks of uncertainty.