O'Neill Bros. Plumbing
Plumber · Rockville, MD
Our verdict
Perfect 5.0★ across 40 reviews; 3 of 5 analyzed reviews mention fast response, 2 cite fair pricing vs. big competitors, and same-day estimates plus next-day installs confirmed in multiple reviews.
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 ↗
Only 5 reviews analyzed — treat this assessment as a first impression, not a track record.
What reviewers praise
Faster and cheaper than big-name DMV competitors: 2 of 5 reviews directly compare pricing favorably against large companies, with one reviewer citing 'far more affordable' vs. FH Furr.
1 cited review
“We got an exorbitant quote from a large company in the DMV area (FH Furr) for a handful of plumbing items and decided to call O'Neill Bros for a comparison. They were far more affordable, faster, actually on time and professional in completing their work.”
Cited in 2 of the 5 reviews we analyzed — 1 cited review not excerpted here.
Same-day response to emergencies: 2 reviews confirm same-day service — boiler fixed same day during busy holiday season, and water heater estimated same-day with next-day install.
1 cited review
“Patrick was able to come by the house the same day that we called (despite it being a busy holiday season) and had us up and running in just a few hours. Not only was the service timely and professional, but it also saved us from the expensive headache of a boiler replacement.”
Cited in 2 of the 5 reviews we analyzed — 1 cited review not excerpted here.
Weekend emergency availability: burst pipe on a Saturday responded to by noon with pipe capped and repipe options explained.
1 cited review
“Had a water pipe leak in my kitchen ceiling on Sat which then burst onto the floor. I called them in the morning and they came by noon. Chris and Seamus were the absolute best! Capped the pipes so no more leak and explained the alternatives for a needed re-piping.”
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.
1 of 5 reviews flags pricing as 'expensive' in the context of boiler repair — though reviewer still rated 5 stars, noting the cost was worth it vs. full replacement.
“Patrick was able to come by the house the same day that we called (despite it being a busy holiday season) and had us up and running in just a few hours. Not only was the service timely and professional, but it also saved us from the expensive headache of a boiler replacement.”
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
“Fantastic company! Seamus did a great job with our shower and toilet. He is very knowledgeable and could answer all our questions. We’ll definitely stick with O’Neill Bros if anything comes up in the future.”
“We have used O'Neill Bros. Plumbing twice and they will be the company we call IF we need plumbing work. They are extremely prompt and professional and very experienced. They were able to due a same-day estimate and next-day installation on a new hot water heater this week and we are very happy with their work and their pricing was more than fair for top 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 40 reviews so far. Treat this as a first read.
Newest review in our sample: Feb 2026.
Should you hire O'Neill Bros. Plumbing?
Best for
- Emergency and same-day calls
- Budget-conscious homeowners
- Emergency and burst pipe repair
Hire if
- You need a plumber who actually shows up when scheduled
- You need fast same-day or after-hours response
Think twice if
- You need rock-bottom prices with zero flexibility on the quote
- You need detailed walkthroughs and written estimates before work starts
Advice derived from the review analysis above — how we decide.
Own O'Neill Bros. Plumbing?
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Find plumbers near you
O'Neill Bros. Plumbingisn't in one of our ranked city guides yet — the nearest covered markets are below.
Nearby: Reston · Annapolis Junction · District Heights · Cooksville