105 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Portsmouth: Seacoast Sewer & Drain, Inc., CR Score 63/100; 4.9★ from 156 Google reviews; open 24/7.
Best for emergencies (open 24/7): Heritage Home Service, posts 24/7 hours; ranked #2 of 105.
Most-reviewed: Heritage Home Service, 2,248 Google reviews at 4.9★, the most of 105 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
105 Portsmouth plumbers are ranked here by CR Score, from ten published factors. 26 are open 24/7, 41 open Saturdays and 33 open Sundays, based on posted hours. The median Google rating is 4.9★ across 105 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Seacoast Sewer & Drain, Inc. | 63 | 4.9★ (156) | Eliot, 4 mi away | 24/7 | Overall |
| 2 | Heritage Home Service | 60 | 4.9★ (2,248) | Hampton, 7 mi away | 24/7 | Emergencies, Most reviews |
| 3 | All American Plumbing and Heating | 60 | 4.9★ (58) | Eliot, 8 mi away | 24/7 | — |
| 4 | Backwater Plumbing LLC | 60 | 5.0★ (35) | Eliot, 7 mi away | 24/7 | — |
| 5 | Sgt. Smith's Drain Cleaning Services | 60 | 4.8★ (196) | Biddeford, 16 mi away | 24/7 | — |
| 6 | Maffei Services | 59 | 4.7★ (848) | Haverhill, 25 mi away | 24/7 | — |
| 7 | A-List Drains Inc | 59 | 5.0★ (142) | Andover, 22 mi away | 24/7 | — |
| 8 | SRV Plumbing and Heating | 59 | 5.0★ (58) | Haverhill, 15 mi away | 24/7 | — |
| 9 | Top Dog Sewer & Drain | 59 | 4.9★ (58) | Chester, 14 mi away | 24/7 | — |
| 10 | Rooter-Man | 58 | 4.5★ (33) | Eliot, 7 mi away | 24/7 | — |
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 156 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hampton, 7 mi away
Ranked #2 because of its Google rating and review volume: 4.9★ from 2,248 Google reviews, the most in Portsmouth.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Eliot, 8 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 58 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Eliot, 7 mi away
Ranked #4 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 Biddeford, 16 mi away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 196 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Haverhill, 25 mi away
Ranked #6 because of its Google rating and trade focus: 4.7★ from 848 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Andover, 22 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 142 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Haverhill, 15 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 58 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chester, 14 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 58 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Eliot, 7 mi away
Ranked #10 because of its Google rating and trade focus: 4.5★ from 33 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Portsmouth
Ranked #11 because of its Google rating and trade focus: 3.7★ from 31 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in South Berwick, 9 mi away
Ranked #12 because of its Google rating and trade focus: 4.8★ from 19 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Exeter, 13 mi away
Ranked #13 because of its Google rating and trade focus: 4.8★ from 23 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Barnstable, 15 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 25 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chester, 23 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 77 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hampton, 11 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 245 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Newmarket, 10 mi away
Ranked #17 because of its Google rating and trade focus: 4.5★ from 8 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Exeter, 11 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 103 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Portsmouth
Ranked #19 because of its Google rating and availability: 4.9★ from 45 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Brighton, 7 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 48 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lebanon, 14 mi away
Ranked #21 because of its Google rating and trade focus: 4.7★ from 23 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Portsmouth
Ranked #22 because of its Google rating and trade focus: 4.7★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Newmarket, 9 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Portsmouth
Ranked #24 because of its Google rating and trade focus: 4.3★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Chester, 14 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 10 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 #32 to #45, in CR Score order; each links to its profile. We publish the top 45 of 105 ranked plumbers here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 32 | Clem's Plumbing & Heating | 54 | 3.7★ (3) | 13 mi |
| 35 | M&K Plumbing & Heating | 53 | 4.3★ (11) | 22 mi |
| 36 | Pilot Plumbing, Heating and Cooling | Plumber, Tankless Water Heater Repair & Installation | Heating & AC Repair Sandown, NH | 53 | 5.0★ (51) | 22 mi |
| 43 | HomeWiz | 52 | 4.6★ (163) | 17 mi |
| 45 | Townsend Energy | 52 | 3.7★ (71) | In Portsmouth |
3 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 |
|---|---|---|
| BOH DIRT WORKS, LLC | 5.0★ (11) | 9 mi |
| Dry Air Systems Inc | 4.7★ (61) | 20 mi |
| Palmer and Sicard, Inc. | 3.9★ (20) | 10 mi |
National price ranges in USD, not adjusted for Portsmouth. 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 New Hampshire, New Hampshire Office of Professional Licensure and Certification licenses Plumber licenses (Mechanical Licensing Board).
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 105 Portsmouth 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 Portsmouth 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 |