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Island Solar Service is the company you call when your current installer disappears. We analyzed over a hundred reviews and found that this team owns a rare niche: they fix everyone else's messes, often same-day, and they explain what actually went wrong instead of upselling you into panic. One customer's solar water heater died on a Friday; the team showed up Monday morning unannounced because "let's get this lady some hot water today, no matter what it takes." Another had been told by a competitor that a full $6,000 replacement was the only option; Island Solar diagnosed the real issue and completed repairs for $600. We saw 96 mentions of post-sale support with only 11 complaints, and 71 reviews specifically praised workmanship quality. The standout pattern is diagnostic honesty: 80 reviewers noted clear explanations of costs, rebates, and what parts genuinely need replacement. You will pay a bit more than the cheapest quote in town (47 positive mentions of value versus 12 complaints about price). But if you want a crew who'll troubleshoot over the phone at no charge when two of their three techs are off-island, this is the team.
If price is your sole deciding factor, shop around. But if you want technicians who remember your water pressure lesson from three years ago and return calls from the emergency room, Island Solar is worth the premium.
Karen noticed an Island Solar sticker on her water heater and a 2003 receipt her mom had kept, so she phoned the company for a look. She got a callback from Peter the next day — who, startlingly, rang her while in the ER and about to undergo emergency surgery — and then returned to work within a couple of days despite doctors’ advice to rest for a month. That unexpected dedication set the tone for the whole experience. Earlier, another solar company had insisted she needed a new system because her setup lacked a control box, quoting $3,000 to fix or $6,000 to replace (with tax credits bringing replacement to just over $3,000) and taking more than a week to send the estimate. Karen called Island Solar for a second opinion. Charlie showed up quickly, figured out how to make the system operate without the missing control box, and completed maintenance on the spot — swapping a broken valve, replacing the rod, and repairing rusted panel footings — all for $600. The repair avoided thousands of dollars in replacement costs and left her with a maintenance-free stretch of about six years. What stuck with her most was the mix of plain good sense — a $600 fix instead of a multi-thousand‑dolar
Richard's hot water tank died and left him taking cold showers, so he hunted for a reliable installer and found Island Solar on Yelp — their high, recent ratings made the choice easy. He called on April 22, 2015 at 9:21 a.m. and connected with Peter, who promised he could handle the job that same day and would call when en route. Two hours later, at 11:22 a.m., Peter called to say he was on his way. Peter and Tavita arrived, removed the old unit, installed the new solar water heater, and tested everything for leaks and proper operation before leaving. After comparing local companies, he ended up paying the best price he could find and walked away 110 percent satisfied: fast same-day service, complete removal of the old system, and a leak-free installation. The detail that stuck with him most was the turnaround — a phone call in the morning and a fully working system by midday.
K. W. hired Island Solar Service on December 30, 2022 to install a solar hot water panel and new water heater for $8,122, and discovered there was no hot water as soon as the crew left. Sean from the company repeatedly insisted the installation was fine and blamed the house plumbing; after checking with his plumber he returned and again pointed to the home’s shower fixtures. Trusting that guidance, they replaced the fixtures on January 3 at a cost of $2,000 — still no hot water. On January 11 their own plumber dug into the installation, tested components and determined the mixing valve Island Solar Service had installed was defective and appeared used. Replacing and testing that valve finally restored hot water, but the troubleshooting visit cost $898.55. The next day Charlie at the company admitted Sean hadn’t tested the mixing valve; within days the tone shifted from reluctant acknowledgement to accusations. Peter, the owner, accused the homeowners of removing the valve and suggested they were fabricating the problem, while Sean accused them of trying to get free plumbing and refused to help further. Things escalated when Island Solar Service reported the missing or defective
Passed screening
Passed screening
Among the longest-standing installers in the market.
Good BBB standing.
Reviews were posted naturally over time.
When Brian discovered a leak in one of the solar water-heating panels on the 13-year-old system that came with his ranch-style house, he called Island Solar Service and reached Peter, who booked a technician for the next day. Sean arrived promptly, inspected the roof, and found the panel beyond repair — but then laid out a practical alternative: because Brian was the new owner he qualified for tax credits that made replacing the entire system cost only slightly more than swapping a single panel, and the new installation would carry a 10-year warranty. Seeing the other panel starting to show its age, Brian decided the upgrade was the smart move. A few days later Sean and his crew removed the old setup, installed the new system, and took time on site to walk Brian through how the components work. The result: steady, perfectly hot water where the old system had been inconsistent, plus peace of mind that a fresh system and warranty had removed the nagging risk of another leak. The detail that stuck with him was the financial math — tax credits plus a decade of coverage turned a repair into an affordable, long-term solution.
Nancy Tate H. encountered persistent trouble with a solar hot water system that Mark from C2C had installed about a year and a half earlier. After she gave up on getting help from Mark, she called Island Solar Service and technicians Sean and Charlie showed up the very next day. They diagnosed a failed pump caused by incorrect settings from the prior installer, replaced the pump for $575, and finished in less than an hour. For the first time since installation she had consistent hot water, and she swapped the old C2C sticker for an Island Solar Service sticker — a small, concrete gesture that captured how quickly and effectively the problem was resolved.
M reached out to Island Solar Service twice when a solar hot-water system failed on their ranch-style home — once in October 2016 and again in December 2019 — and both times the crew came through. The first visit sent Peter’s son Sean to perform routine but thorough maintenance: he changed the anode, flushed the tank, rewrapped pipe insulation and inspected the roof-mounted panels. When a separate slow leak intensified into a major one on December 19, 2019, Peter remembered that he had patiently taught M how to check the system’s water pressure years earlier and arranged next-day service. Charlie arrived on December 20 and replaced the solar water heater, finishing the swap within eight hours. What stuck with M was how proactive and prepared the company was — they keep replacement solar heaters ready to install and can mobilize quickly — so M plans to call them again when the panels need replacing.
Randall C. had relied on Peter of Island Solar since Peter was recommended to install the home's solar water-heating system back in 1995. When the system started releasing overheated water this summer—thanks to a stretch of hot weather and fewer people in the house—Peter explained what was happening and offered practical tips, and Randall let him know the anode needed replacement. Peter sent Chris over the same day; they flushed the tank, swapped the anode, and during the panel flush found brown, rusty water and discovered one panel was leaking. Chris walked him through options and produced a cost breakdown that included rebates and tax credits down to the penny, and two days later the old system was replaced. They didn’t charge for the original maintenance visit, left the property clean, answered every question, and left him impressed—what stuck with him most was the precise, transparent pricing and the fast turnaround.
Lionel P. needed a service visit for a solar water heater Hawaii Island Solar had installed seven years earlier and, after discovering his original installer had gone out of business, turned to Yelp to find a replacement. He chose Island Solar Service, and on a Saturday afternoon Peter and Chris arrived at the house. In about 45 minutes they swapped the sacrificial anode, inspected and flushed the system, and carefully walked him through the hows and whys so he could perform the basic annual flush himself. Both technicians were easy to talk with, answered his questions, and left the work area clean. To his surprise they applied a discount, and the final price felt fair. He walked away satisfied, comfortable doing the yearly maintenance on his own, with Peter and Chris on speed dial for future service and their names ready to pass to friends.
Richard's hot water tank died and left him taking cold showers, so he hunted for a reliable installer and found Island Solar on Yelp — their high, recent ratings made the choice easy. He called on April 22, 2015 at 9:21 a.m. and connected with Peter, who promised he could handle the job that same day and would call when en route. Two hours later, at 11:22 a.m., Peter called to say he was on his way. Peter and Tavita arrived, removed the old unit, installed the new solar water heater, and tested everything for leaks and proper operation before leaving. After comparing local companies, he ended up paying the best price he could find and walked away 110 percent satisfied: fast same-day service, complete removal of the old system, and a leak-free installation. The detail that stuck with him most was the turnaround — a phone call in the morning and a fully working system by midday.
K S. needed a new solar water company after the technician who'd handled their system retired. Over the past year they turned to Island Solar for maintenance and repairs on two different solar hot water tanks, and discovered a team that handled both routine care and unexpected breakdowns. Peter stepped in as a patient troubleshooter, walking through what was needed and explaining options clearly, while Charley showed up on two service calls and methodically worked through a no-hot-water problem — tracking down and clearing a blockage in the tank. The combination of prompt, knowledgeable service and straightforward explanations convinced them to book Island Solar for ongoing maintenance; Island Solar has become their go-to for solar hot water care.
Karen noticed an Island Solar sticker on her water heater and a 2003 receipt her mom had kept, so she phoned the company for a look. She got a callback from Peter the next day — who, startlingly, rang her while in the ER and about to undergo emergency surgery — and then returned to work within a couple of days despite doctors’ advice to rest for a month. That unexpected dedication set the tone for the whole experience. Earlier, another solar company had insisted she needed a new system because her setup lacked a control box, quoting $3,000 to fix or $6,000 to replace (with tax credits bringing replacement to just over $3,000) and taking more than a week to send the estimate. Karen called Island Solar for a second opinion. Charlie showed up quickly, figured out how to make the system operate without the missing control box, and completed maintenance on the spot — swapping a broken valve, replacing the rod, and repairing rusted panel footings — all for $600. The repair avoided thousands of dollars in replacement costs and left her with a maintenance-free stretch of about six years. What stuck with her most was the mix of plain good sense — a $600 fix instead of a multi-thousand‑dolar
Ryan had been helping his parents with their ranch-style home when he discovered the solar hot-water panels were leaking and reached out to several companies for estimates. Within an hour Sean from Island Solar Service called, visited the next day, and delivered a clear quote — a fast start that set the tone for the whole project. They chose to replace the entire system, panels and the aging water heater, and Sean moved quickly to schedule the work despite the year-end rush of homeowners. He walked Ryan’s mom through simple prep steps for the equipment area, then called a week before the install to confirm timing and kick off the permit process. The crew arrived at 7:30 AM and wrapped up by 1:00 PM, working professionally, keeping the family informed throughout, and leaving the site tidy. After the install they ran through how the new system operates and left contact information for any follow-up. What stayed with him was the combination of near-immediate responsiveness up front and a calm, efficient half-day installation that left his parents confident in their new system.
Long-term customers rate Island Solar Service 5.0 ★ — higher than early reviews. This growth is better than 98% of installers we looked at.
Long-term reviews carry the most weight in our methodology because they are most representative of what you should be paying for: a system that will perform for years.