A1 Colorado Plumbing
Plumber · Littleton, CO · Open 24 hours per Google listing
Our verdict
5.0★ across 84 reviews; 87-review dataset shows fast_response=21, weekend_or_emergency=10, fair_pricing=10; Harold arrived within 30 minutes of a 3:30am flood call and on Christmas morning for a leaking water heater.
Scores are our editorial reading of published customer reviews — not a verification, license check, or guarantee.
Our opinion, based on the 87 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.
What reviewers praise
Confirmed 3:30am arrival within 30 minutes for a flooded basement emergency, then handled water remediation as well per 1 review.
1 cited review
“I woke up to a flooded basement at 3:30 a.m. about a week ago. Thanks to Google i got ahold of Harold at A1 Colorado Plumbing. He was on the job in within thirty minutes.”
Same-day Christmas morning water heater response in 1 review; temporary fix held and permanent fix completed next day.
1 cited review
“Came right away on Christmas morning when I discovered a leak in my hot water tank. He did a temporary fix, which held great and came back the following day to provide a permanent fix.”
Fixed problem for the exact phone quote even when the job required more work than initially assessed, per 1 review.
1 cited review
“Harold showed up the same day and fixed my toilet for exactly what he quoted over the phone even though the problem needed more work than I thought.”
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 87 reviews mentions a 2-star experience; with 86 five-star reviews the single outlier is noted but the pattern is isolated.
Cited in 1 of the 87 reviews we analyzed.
Keep it in proportion: these concerns are cited in 1 of the 87 reviews we analyzed. Most reviewers report positive experiences — see the full rating picture below.
The evidence — in reviewers' own words
Critical
“The service charge is $175. the visit included pitting sealer around my kitchen faucet. screwing off my current shower faucet and replacing it with a used one. They were late. I needed a steam shower part which I was told he would drop off later when he was in Longmont. He still hasn't dropped it off and now wants another $175.00 to drop off a 22.00 dollar part. (10 months later) I called only for an estimate and he …”
Positive
“Harold is professional and efficient. I would highly recommend him. He diagnosed and successfully completed a difficult plumbing issue in my home.”
“Woke up on New Year's Day to a pipe leak over our garage ceiling. What a way to start the year! Finding someone on short notice was a bit of a challenge! A1 Colorado Plumbing was available to stop by and repair the issue. Harold found and addressed the issue within an hour of arriving and also provided assistance mitigating water damage and mold to the ceiling! Very personable and great to work with. Appreciate the …”
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
Newest review in our sample: Jan 2026.
Across platforms
Should you hire A1 Colorado Plumbing?
Best for
- Emergency and same-day calls
- Budget-conscious homeowners
- Complex installs and remodels
- Water heater install/repair
- 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 detailed walkthroughs and written estimates before work starts
- You need warranty-grade work on a complex or high-stakes install
Advice derived from the review analysis above — how we decide.
Own A1 Colorado Plumbing?
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Find plumbers near you
A1 Colorado Plumbingisn't in one of our ranked city guides yet — the nearest covered markets are below.
Nearby: Littleton · Evergreen · Pine · Westminster