398 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Londonderry: Mainline Plumbing, CR Score 62/100; 5.0★ from 565 Google reviews; open Saturdays until 2 PM.
Best for emergencies (open 24/7): Flow Pro Plumbing and Drain Cleaning, posts 24/7 hours; ranked #2 of 398.
Most-reviewed: Heritage Home Service, 7,956 Google reviews at 4.8★, the most of 398 ranked; ranked #11.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
398 Londonderry plumbers are ranked here by CR Score, from ten published factors. 126 are open 24/7, 203 open Saturdays and 156 open Sundays, based on posted hours. The median Google rating is 4.9★ across 398 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Mainline Plumbing | 62 | 5.0★ (565) | Londonderry | Sat · Evenings | Overall |
| 2 | Flow Pro Plumbing and Drain Cleaning | 61 | 5.0★ (118) | Derry, 5 mi away | 24/7 | Emergencies |
| 3 | Priority Plumbing | 61 | 4.9★ (149) | Bedford, 5 mi away | 24/7 | — |
| 4 | Roto-Rooter Plumbing & Water Cleanup | 61 | 4.7★ (411) | Manchester, 7 mi away | 24/7 | — |
| 5 | Roto-Rooter Plumbing & Water Cleanup | 61 | 4.8★ (1,146) | Lowell, 16 mi away | 24/7 | — |
| 6 | Paul The Plumber | 61 | 4.8★ (3,427) | Derry, 3 mi away | — | — |
| 7 | Eric C. Foster Plumbing Heating & Cooling Inc. | 60 | 4.9★ (619) | Chelmsford, 17 mi away | 24/7 | — |
| 8 | High Ground Service Pros - Plumbers Electricians & HVAC Technicians | 60 | 4.9★ (2,303) | Manchester, 10 mi away | 24/7 | — |
| 9 | Southern New Hampshire Plumbing and Heating | 60 | 4.8★ (433) | Londonderry | 24/7 | — |
| 10 | Felix, A Wind River Company | 60 | 4.9★ (609) | Concord, 20 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 because of its Google rating and trade focus: 5.0★ from 565 Google reviews, listed on Google as “Plumber”.
Based in Derry, 5 mi away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 118 Google reviews, listed on Google as “Plumber”.
Based in Bedford, 5 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 149 Google reviews, listed on Google as “Plumber”.
Based in Manchester, 7 mi away
Ranked #4 because of its Google rating and trade focus: 4.7★ from 411 Google reviews, listed on Google as “Plumber”.
Based in Lowell, 16 mi away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 1,146 Google reviews, listed on Google as “Plumber”.
Based in Derry, 3 mi away
Ranked #6 because of its Google rating and trade focus: 4.8★ from 3,427 Google reviews, listed on Google as “Plumber”.
Based in Chelmsford, 17 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 619 Google reviews, listed on Google as “Plumber”.
Based in Manchester, 10 mi away
Ranked #8 because of its Google rating and review volume: 4.9★ from 2,303 Google reviews.
Based in Londonderry
Ranked #9 because of its Google rating and trade focus: 4.8★ from 433 Google reviews, listed on Google as “HVAC contractor”.
Based in Concord, 20 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 609 Google reviews, listed on Google as “Plumber”.
Based in Auburn, 7 mi away
Ranked #11 because of its Google rating and review volume: 4.8★ from 7,956 Google reviews, the most in Londonderry.
Based in Concord, 20 mi away
Ranked #12 because of its Google rating and trade focus: 4.8★ from 897 Google reviews, listed on Google as “Plumber”.
Based in North Andover, 16 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 286 Google reviews, listed on Google as “Plumber”.
Based in Andover, 16 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 142 Google reviews, listed on Google as “Plumber”.
Based in Dracut, 15 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 113 Google reviews, listed on Google as “Plumber”.
Based in Hudson, 4 mi away
Ranked #16 because of its Google rating and trade focus: 4.4★ from 71 Google reviews, listed on Google as “Drainage service”.
Based in Tewksbury, 20 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 226 Google reviews, listed on Google as “Plumber”.
Based in Chester, 12 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 77 Google reviews, listed on Google as “Plumber”.
Based in Lawrence, 16 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 118 Google reviews, listed on Google as “Plumber”.
Based in Derry, 3 mi away
Ranked #20 because of its Google rating and trade focus: 4.8★ from 842 Google reviews, listed on Google as “Plumber”.
Based in Bedford, 9 mi away
Ranked #21 because of its Google rating and review volume: 4.8★ from 683 Google reviews.
Based in Westford, 17 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 111 Google reviews, listed on Google as “Plumber”.
Based in Pinehurst, 22 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 222 Google reviews, listed on Google as “Plumber”.
Based in Pelham, 6 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 52 Google reviews, listed on Google as “Plumber”.
Based in Dracut, 14 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 189 Google reviews, listed on Google as “Plumber”.
#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 398 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 |
|---|---|---|
| 128 Plumbing, Heating, Cooling & Electric | 5.0★ (443) | 19 mi |
| Al's Septic & Excavation | 3.0★ (2) | 3 mi |
| Allied plumbing and heating | 5.0★ (2) | 12 mi |
| American Tank Management Inc | 1.0★ (2) | 9 mi |
| Borelli Plumbing & Heating | 5.0★ (2) | 14 mi |
| Burlington Plumbing & Heating | 3.0★ (2) | 17 mi |
| Dacare the Plumber | 4.9★ (73) | 20 mi |
| Dacare the Plumber | 5.0★ (2) | 7 mi |
| Dave Pollock Plumbing | 3.0★ (2) | 8 mi |
| Drainco | 4.5★ (2) | 16 mi |
| Harley Weymouth Plumbing & Heating | 5.0★ (2) | 11 mi |
| James Gardner Plumbing & Heating LLC | 5.0★ (2) | 16 mi |
| Krafton plumbing and heating | 5.0★ (2) | 14 mi |
| Mikey Pipes Plumbing & Heating LLC | 5.0★ (2) | 11 mi |
| Precision Plumbing | 5.0★ (2) | 4 mi |
| QUIRK Real Estate Sales, Development and Construction | 3.0★ (2) | 11 mi |
| Sewer Works | 5.0★ (2) | 9 mi |
| SRV Plumbing and Heating | 5.0★ (58) | 20 mi |
| Top Dog Sewer & Drain | 4.9★ (58) | 21 mi |
| Tyngsboro Plumbing & Heating | 5.0★ (2) | 15 mi |
National price ranges in USD, not adjusted for Londonderry. 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 398 Londonderry 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 Londonderry 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 |