250 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Napa: A & S Plumbing Inc, CR Score 61/100; 4.9★ from 378 Google reviews; open Saturdays until 5 PM.
Best for emergencies (open 24/7): Marin Roto-Rooter, posts 24/7 hours; ranked #2 of 250.
Most-reviewed: Service Champions, 5,220 Google reviews at 4.9★, the most of 250 ranked; ranked #33.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
250 Napa plumbers are ranked here by CR Score, from ten published factors. 61 are open 24/7, 143 open Saturdays and 97 open Sundays, based on posted hours. The median Google rating is 4.9★ across 250 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | A & S Plumbing Inc | 61 | 4.9★ (378) | Napa | Sat | Overall |
| 2 | Marin Roto-Rooter | 61 | 4.9★ (1,033) | Novato, 20 mi away | 24/7 | Emergencies |
| 3 | Mr. Rooter Plumbing of Contra Costa County | 61 | 4.8★ (265) | Fairfield, 10 mi away | 24/7 | — |
| 4 | Steve Silva Plumbing Inc | 60 | 4.6★ (49) | Napa | 24/7 | — |
| 5 | Mr Rooter Plumbing | 60 | 4.8★ (158) | Napa | — | — |
| 6 | Rooter Hero Plumbing & Air of Martinez | 60 | 4.8★ (1,092) | Martinez, 22 mi away | 24/7 | — |
| 7 | Wright Brothers Plumbing & Gas | 59 | 4.8★ (137) | Vallejo, 14 mi away | 24/7 | — |
| 8 | North Bay Water Heater Solutions | 59 | 5.0★ (26) | Napa | Sat · Sun · Evenings | — |
| 9 | Eco Plumbing | 58 | 5.0★ (9) | Fairfield, 1 mi away | 24/7 | — |
| 10 | Fast Water Heater Company | 58 | 4.9★ (1,240) | Richmond, 25 mi away | Sat · Sun · Evenings | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 4.9★ from 378 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Novato, 20 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 1,033 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairfield, 10 mi away
Ranked #3 because of its Google rating and trade focus: 4.8★ from 265 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Napa
Ranked #4 because of its Google rating and trade focus: 4.6★ from 49 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Napa
Ranked #5 because of its Google rating and trade focus: 4.8★ from 158 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Martinez, 22 mi away
Ranked #6 because of its Google rating and trade focus: 4.8★ from 1,092 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Vallejo, 14 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 137 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Napa
Ranked #8 because of its Google rating and trade focus: 5.0★ from 26 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairfield, 1 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Richmond, 25 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 1,240 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Novato, 21 mi away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 791 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Boyes Hot Springs, 9 mi away
Ranked #12 because of its Google rating and trade focus: 4.6★ from 55 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Vacaville, 16 mi away
Ranked #13 because of its Google rating and trade focus: 4.8★ from 89 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cotati, 24 mi away
Ranked #14 because of its Google rating and trade focus: 4.7★ from 393 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Benicia, 10 mi away
Ranked #15 because of its Google rating and trade focus: 4.4★ from 59 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairfield, 15 mi away
Ranked #16 because of its Google rating and trade focus: 4.4★ from 238 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Antioch, 15 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 35 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairfield, 17 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 51 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Napa
Ranked #19 because of its Google rating and trade focus: 4.9★ from 88 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairfield, 16 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 42 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Benicia, 18 mi away
Ranked #21 because of its Google rating and trade focus: 4.7★ from 113 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rohnert Park, 23 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 401 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Napa
Ranked #23 because of its Google rating and trade focus: 5.0★ from 71 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cotati, 23 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 123 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Vallejo, 13 mi away
Ranked #25 because of its Google rating and trade focus: 4.5★ from 57 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 250 ranked plumbers here; the rest are on their profiles.
20 more plumbers within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| ABC Plumbing | 5.0★ (8) | 14 mi |
| Affordable Plumber Napa -Drain Service & Plumbing Repair | In Napa | |
| Alejandro's Plumbing | 4.4★ (58) | 14 mi |
| All Concord Plumbing Solution | 5.0★ (27) | 24 mi |
| All Plumbing | 5.0★ (2) | 13 mi |
| All Star Plumbing - Napa | 5.0★ (1) | In Napa |
| Clear Wood Plumbing LLC | 5.0★ (6) | 16 mi |
| Delatorre Septic and Trucking LLC | 4.7★ (7) | 20 mi |
| Desired Plumbing, Inc. | 5.0★ (2) | 18 mi |
| Mr. Drain Plumbing of Hayward | In Napa | |
| Mr. Drain Plumbing of Livermore | In Napa | |
| Napa Valley Precision Plumbing | In Napa | |
| Ongaro & Sons | 4.9★ (538) | 20 mi |
| Preferred Plumbing & Drain | 5.0★ (2) | 16 mi |
| RENOS PLUMBING | In Napa | |
| Repair Solutions | 3.0★ (2) | 14 mi |
| Scott Cramer Plumbing | 5.0★ (2) | 20 mi |
| Shark Flow Plumbing | 5.0★ (2) | 10 mi |
| Tony B's Sewer and Drain Service | 3.0★ (2) | 17 mi |
| Water heater service pro LLC | 3.0★ (2) | 20 mi |
National price ranges in USD, not adjusted for Napa. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Water heater replacement | $882 | $1,348 | $1,826 | Per unit, installed (unit plus labor); typical range of customer-reported jobs. US national range | October 2026 |
In California, Contractors State License Board (CSLB) licenses C-36 Plumbing contractor license.
Jobs of $1,000 or more in labor and materials (from January 1, 2025).
No chip usually means we have not matched a state record yet. Check the lookup yourself before you hire.
Guide checked October 2026. How we verify licenses
We scored 250 Napa plumbers on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed October 22, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Napa data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |