9 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Potsdam: Roto-Rooter Plumbing Service, CR Score 67/100; 4.8★ from 302 Google reviews; open 24/7.
Best for emergencies (open 24/7): AMS Plumbing and HVAC, posts 24/7 hours; ranked #2 of 9.
Most-reviewed: AMS Plumbing and HVAC, 39 Google reviews at 4.8★, the most of 9 ranked after Roto-Rooter Plumbing Service; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
9 Potsdam plumbers are ranked here by CR Score, from ten published factors. 2 are open 24/7, 3 open Saturdays and 3 open Sundays, based on posted hours. The median Google rating is 4.4★ across 9 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Roto-Rooter Plumbing Service | 67 | 4.8★ (302) | Potsdam | 24/7 | Overall |
| 2 | AMS Plumbing and HVAC | 58 | 4.8★ (39) | Massena, 18 mi away | 24/7 | Emergencies, Most reviews |
| 3 | Dan's Plumbing & Heating | 56 | 4.0★ (12) | Potsdam | — | — |
| 4 | Grant's Plumbing & Heating | 54 | 4.4★ (38) | Canton, 11 mi away | — | — |
| 5 | J&S Construction | 48 | 1.0★ (5) | Potsdam | Sat · Sun · Evenings | — |
| 6 | Express Plumbing & Heat Services | 48 | 4.5★ (11) | Massena, 18 mi away | — | — |
| 7 | J Riley Plumbing & Heating | 45 | 2.0★ (7) | Massena, 19 mi away | — | — |
| 8 | Deragon's Property Management Renovations | 43 | 3.4★ (23) | Massena, 17 mi away | — | — |
| 9 | M&M Contracting | 42 | 4.7★ (3) | Ogdensburg, 21 mi away | — | — |
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 review volume: 4.8★ from 302 Google reviews, the most in Potsdam.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Massena, 18 mi away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 39 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Potsdam
Ranked #3 because of its Google rating and trade focus: 4.0★ from 12 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Canton, 11 mi away
Ranked #4 because of its Google rating and trade focus: 4.4★ from 38 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Potsdam
Ranked #5 because of its Google rating and trade focus: 1.0★ from 5 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Massena, 18 mi away
Ranked #6 because of its Google rating and trade focus: 4.5★ from 11 Google reviews, listed on Google as “Heating contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Massena, 19 mi away
Ranked #7 because of its Google rating and trade focus: 2.0★ from 7 Google reviews, listed on Google as “Heating contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Massena, 17 mi away
Ranked #8 because of its Google rating and review volume: 3.4★ from 23 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ogdensburg, 21 mi away
Ranked #9 because of its Google rating and trade focus: 4.7★ from 3 Google reviews, listed on Google as “Excavating contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
National price ranges in USD, not adjusted for Potsdam. 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 |
We scored 9 Potsdam 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 Potsdam 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 |