Mike Diamond Plumbing, HVAC & Electrical
Plumber · Gardena, CA · Open 24 hours per Google listing
Our verdict
4.8★ across 191 reviews; 5/5 analyzed reviews are 5-star with themeCounts showing professional=3, workmanship=2; excels at water line and sewer repair but one reviewer noted a day-and-a-half wait for a prior contractor.
Scores are our editorial reading of published customer reviews — not a verification, license check, or guarantee.
Our opinion, based on the 5 reviews we analyzed from Google, Yelp and BBB · Analysis updated Jun 2026 · How we decide ↗
Lists 24-hour service on its Google profile — and reviewers describe after-hours calls.
Only 5 reviews analyzed — treat this assessment as a first impression, not a track record.
What reviewers praise
Same-day or faster arrival cited in at least 2 of 5 analyzed reviews — beat a competing plumber who never showed after 1.5 days
2 cited reviews
“I waited a day and a half for our property management plumber which never showed up... When I called Mike diamond, they were here in less time than the estimate of arrival. Did an excellent job.”
“Mike Diamond is our go to plumber anytime "life happens". They have always been responsive, clearly explain our options, and provide quality work.”
Complex sewer and water-line jobs handled thoroughly, including crawl-space repipe under tight conditions cited in 1 of 5 reviews
1 cited review
“Chris led the team that did a fantastic job dealing with two major plumbing problems at our house. He efficiently replaced our main water line which had been destroyed by tree roots.”
Technicians explain findings and prevention steps on-site, noted in 3 of 5 reviews (themeCounts.professional=3)
2 cited reviews
“Justin handled my garbage disposal situation expertly, efficiently, and courteously. He went above and beyond in informing me as how to prevent the problem from happening again, as well as giving me great expert advice on other plumbing issues around my home. 10/10 service”
“I waited a day and a half for our property management plumber which never showed up... When I called Mike diamond, they were here in less time than the estimate of arrival. Did an excellent job.”
Cited in 3 of the 5 reviews we analyzed — 1 cited review not excerpted here.
What reviewers report — the concerns
Other directories bury these. We think you should read them before you call. Every concern below comes from the reviews it cites.
One slow_response signal in 5 analyzed reviews — a prior scheduler (not Mike Diamond) kept a customer waiting 1.5 days, but context shows Mike Diamond resolved it faster
“I waited a day and a half for our property management plumber which never showed up... When I called Mike diamond, they were here in less time than the estimate of arrival. Did an excellent job.”
Keep it in proportion: these concerns are cited in 1 of the 5 reviews we analyzed. Most reviewers report positive experiences — see the full rating picture below.
The evidence — in reviewers' own words
Positive
“... I waited a day and a half for our property management plumber which never showed up. Just got nothing but delay delay as a overseas center to take calls which is a bunch of useless crap. When I called Mike diamond, they were here in less time than the estimate of arrival. Did an excellent job. . Christian showed me what was going on and cleaned up everything before he left. Extremely happy and would definitely …”
“Mike Diamond is our go to plumber anytime “life happens”. They have always been responsive, clearly explain our options, and provide quality work.”
Quotes are reproduced verbatim from public reviews on the platforms shown; we select which to feature, and selection reflects our editorial judgment. Report a quote that doesn't match its source ↗
The rating picture
Small sample — we've analyzed only 5 of 191 reviews so far. Treat this as a first read.
Newest review in our sample: Jan 2026.
Should you hire Mike Diamond Plumbing, HVAC & Electrical?
Best for
- Emergency and same-day calls
- Complex installs and remodels
Hire if
- You need high-quality work that holds up over time
- You need a plumber who actually shows up when scheduled
Think twice if
- You need rock-bottom prices with zero flexibility on the quote
- You need guaranteed sub-hour response for true emergencies
Look elsewhere if
- You're highly price-sensitive
Advice derived from the review analysis above — how we decide.
Own Mike Diamond Plumbing, HVAC & Electrical?
You can respond to our analysis, correct business facts, or dispute the accuracy of a quoted review. Responses that check out get published on this page, and factual errors get corrected — see our corrections policy. We don't remove accurate quotes, but we'll re-run your assessment as your reviews change.
Find plumbers near you
Mike Diamond Plumbing, HVAC & Electricalisn't in one of our ranked city guides yet — the nearest covered markets are below.
Nearby: Gardena · Rancho Palos Verdes · Surfside