84
Trust
Score
WattBot

Yamamoto Electrical Services reviews

Yamamoto Electrical Services
31 Reviews • 2 Locations 4,123 Data Points Processed

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The Verdict

Yamamoto Electrical Services is a solid contractor that gets the basics right. We analyzed dozens of reviews and found 19 customers singling out workmanship as consistently neat and professional. One evacuee needed a 220V line for an electric stove and water heater the same day he called. The crew arrived on time, finished in two hours, and left the job looking clean. That urgency and reliability is a pattern here. We saw 20 mentions of strong project management, mostly tied to punctuality and on-the-spot problem-solving when installation plans hit snags. Glen, one of their technicians, rerouted conduit around an older single-wall house and made it look intentional rather than tacked on. But we also found one homeowner whose solar roof developed leaks five years after installation because the crew drilled exploratory holes in rows to find studs, then sealed them with standard caulk instead of the specified roof-coating product. When the leaks started, the owner declined to help. That's a red flag for long-term accountability, especially on roof penetrations where cheap fixes come back to haunt you.

If you need electrical work done quickly and cleanly by courteous technicians, Yamamoto is a safe bet. But if you're installing solar on a roof you care about long-term, ask explicit questions about penetration methods and sealant specs before they start drilling.

3 Stories That Stood Out

1. Ted S.
Yelp | Sep 20, 2021 |

Ted S. had a house with a brand-new 50-year Gaco roof coating and asked that the solar array be mounted over the carport to avoid penetrating that roof. Scott insisted the panels belong on the house and fitted them there. After installation they discovered obvious new holes in the roof—places where sunlight showed through from below—and Scott’s crew sealed those spots immediately, but used a common 5-year caulk instead of the Gaco-compatible patch material Ted had mentioned and Scott had dismissed as unnecessary. About five years later water began leaking under the modules. He traced the drips to lines of drilled holes where installers had bored repeatedly until they hit wood, then simply caulked over each hole; those caulking beads are now failing and letting water in. During a heavy rain they cut through the ceiling to see the roof from underneath and watched a steady stream pour through one opening; now they keep a bucket under the leak. Ted asked Scott to remove the panels temporarily so the correct Gaco patch could be applied, sent photos of water pouring in, and got no reply—Scott also declined to guarantee the roof when first contacted. The electrical work performed without-

2. Mr. Walter W.
Yelp | Feb 1, 2024 |

Mr. Walter W. had been evacuated by lava and moved into a rental that didn’t have hot running water or a working stove. He reached out for help; Scott came to inspect the situation and, in less than a day, delivered a quote that he accepted. They booked an early-morning slot, the technician arrived on time, and within two hours the crew had pulled two 220‑volt lines to power an electric hot water heater and an electric stove. The installation looked neat and professional, and both the crew and management handled the job reliably and courteously. He walked away relieved and grateful — the standout detail was the speed and professionalism: same‑day quote, on‑time arrival, and a functioning stove and hot water by that morning.

3. Jennifer H.
Yelp | Aug 9, 2024 |

Jennifer H. invited Yamamoto Electric to install solar on her older single-wall house, and the company sent Glen and Buddy to do the work. They carefully routed the conduit so it sat attractively out of the way, turning a potentially awkward retrofit into a clean, well-finished installation — the standout detail that made the job feel thoughtful rather than rushed. She appreciated the workmanship, wants Yamamoto back to tackle a few other updates on the aging house, and found the company’s reputation matched the result. She even closed with "Mahalo guys!"

Platforms Monitored

Yelp
26 Reviews · 1 Location
4.5/5
Google
5 Reviews · 1 Location
5.0/5
SolarReviews
Tracking
N/A
EnergySage
Tracking
N/A
BBB
Tracking
N/A

Performance by Work Type

ELECTRICAL
ELECTRICAL
Panel upgrades and wiring for system readiness.
4.8/5
SERVICE
SERVICE
Repairs, maintenance, and ongoing system support.
4.8/5
SOLAR
SOLAR
Installation, permitting, and grid connection.
2.7/5
ROOFING
ROOFING
Repair or replacement, before or after solar installation.
N/A
BATTERY
BATTERY
Energy storage for backup savings and independence.
N/A
COMPLEX PROJECTS
COMPLEX PROJECTS
Multi-trade installations requiring co-ordination.
N/A

How We Got To Trust Score 84

Clean Record

Unauthorized Activities

Passed screening

We checked for:
Unauthorized charges
Undisclosed loans
Identity theft
Forged signatures
Fake contracts
Falsified permits

Misleading Claims

Passed screening

We checked for:
Bait & switch
Overstated savings
Hidden fees
Misrepresented specs
False performance
Misleading warranty

Background Check

Serving customers for 10 years

Operating longer than most installers in the market.

BBB Rating

Not BBB rated.

Natural Review Patterns

Reviews were posted naturally over time.

What You Can Expect

01

1. Mr. Walter W.
Yelp | Feb 1, 2024 |

Mr. Walter W. had been evacuated by lava and moved into a rental that didn’t have hot running water or a working stove. He reached out for help; Scott came to inspect the situation and, in less than a day, delivered a quote that he accepted. They booked an early-morning slot, the technician arrived on time, and within two hours the crew had pulled two 220‑volt lines to power an electric hot water heater and an electric stove. The installation looked neat and professional, and both the crew and management handled the job reliably and courteously. He walked away relieved and grateful — the standout detail was the speed and professionalism: same‑day quote, on‑time arrival, and a functioning stove and hot water by that morning.

2. MM N.
Yelp | Feb 19, 2023 |

Facing a tight deadline for a new gas range delivery in early February 2023, MM N. needed an electrician to convert a 240-volt outlet to 110 volts in a kitchen of a 1949 home. Yamamoto Electric jumped on the request immediately and managed to schedule the job before the stove arrived. The outlet conversion was completed on time, the bill felt fair, and the quick turnaround undercut the stress of coordinating a delivery. They plan to call Yamamoto for future electrical needs and recommend the company to others in the Hilo area who need fast, reasonably priced service.

3. S I.
Yelp | Sep 23, 2021 |

This homeowner hired Yamamoto Electrical Services for a complete rewire of an old plantation-style house. They worked with Dustin and his crew and discovered the team not only kept them informed about progress and timelines but also offered practical, sometimes eye-opening suggestions for outlet and fixture placement that improved room functionality. The crew stayed professional throughout, handled a slew of small finishing details, and wrapped the project on schedule. They ended up with a thoughtfully laid-out, fully modernized electrical system and the assurance that the little things had been taken care of.

02

1. Jeanne L.
Yelp | Jan 15, 2019 |

Jeanne L. moved into her home two years ago and has brought Scott and his crews back for several projects since. She found each visit delivered the same dependable professionalism: teams that arrived on time, worked cleanly, treated the house respectfully and clearly knew their craft. What stood out was the repeatability — every job ended tidy and on schedule, so follow‑ups and maintenance felt low‑hassle. That steady reliability is the detail that kept her hiring them again.

2. Jennifer H.
Yelp | Aug 9, 2024 |

Jennifer H. invited Yamamoto Electric to install solar on her older single-wall house, and the company sent Glen and Buddy to do the work. They carefully routed the conduit so it sat attractively out of the way, turning a potentially awkward retrofit into a clean, well-finished installation — the standout detail that made the job feel thoughtful rather than rushed. She appreciated the workmanship, wants Yamamoto back to tackle a few other updates on the aging house, and found the company’s reputation matched the result. She even closed with "Mahalo guys!"

3. Robyn M.
Yelp | May 20, 2024 |

Robyn M. now turns to YES for every electrical job after discovering they reliably respond and return calls. She found the crew quick to answer, punctual—showing up when they promised—and clear in their communication. The electricians proved friendly and knowledgeable on every visit. What stuck with her most was the basic reliability: they pick up, follow through, and have earned a permanent spot in her contacts for electrical work.

03

1. Melissa J.
Yelp | Dec 11, 2023 |

Melissa J. needed fans put in for a tricky installation on her home. She ended up with the job completed quickly, handled by a courteous technician, and felt the overall service delivered good value — the standout was how fast and professional they were despite the challenging setup.

2. Miles H.
Yelp | Nov 17, 2023 |

Miles phoned on a Tuesday afternoon, and the company's electrician, Garret, was at his house by 9:00 the next morning. He watched Garret quickly swap a failed GFI outlet and repair a wall-mounted lamp in the hall, completing both jobs efficiently. The memorable detail was the next-day arrival combined with straightforward, professional repairs.

3. Ted S.
Yelp | Sep 20, 2021 |

Ted S. had a house with a brand-new 50-year Gaco roof coating and asked that the solar array be mounted over the carport to avoid penetrating that roof. Scott insisted the panels belong on the house and fitted them there. After installation they discovered obvious new holes in the roof—places where sunlight showed through from below—and Scott’s crew sealed those spots immediately, but used a common 5-year caulk instead of the Gaco-compatible patch material Ted had mentioned and Scott had dismissed as unnecessary. About five years later water began leaking under the modules. He traced the drips to lines of drilled holes where installers had bored repeatedly until they hit wood, then simply caulked over each hole; those caulking beads are now failing and letting water in. During a heavy rain they cut through the ceiling to see the roof from underneath and watched a steady stream pour through one opening; now they keep a bucket under the leak. Ted asked Scott to remove the panels temporarily so the correct Gaco patch could be applied, sent photos of water pouring in, and got no reply—Scott also declined to guarantee the roof when first contacted. The electrical work performed without-

Long-term Satisfaction

Long-term satisfaction for Yamamoto Electrical Services drops to 3.5 ★ compared to early reviews. This decline is worse than 75% 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.

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