62/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 149 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 149 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Best Plumbers in Merrimack, NH (2026)
350 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Merrimack: Priority Plumbing, CR Score 62/100; 4.9★ from 149 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Roto-Rooter Plumbing & Water Cleanup, posts 24/7 hours; ranked #2 of 350.
- 12
Most-reviewed: Heritage Home Service, 7,956 Google reviews at 4.8★, the most of 350 ranked; ranked #12.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
350 Merrimack plumbers are ranked here by CR Score, from ten published factors. 109 are open 24/7, 179 open Saturdays and 137 open Sundays, based on posted hours. The median Google rating is 4.9★ across 350 rated businesses.
Top 10 plumbers in Merrimack at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Priority Plumbing | 62 | 4.9★ (149) | Bedford, 2 mi away | 24/7 | Overall |
| 2 | Roto-Rooter Plumbing & Water Cleanup | 61 | 4.7★ (411) | Manchester, 7 mi away | 24/7 | Emergencies |
| 3 | Flow Pro Plumbing and Drain Cleaning | 61 | 5.0★ (118) | Derry, 6 mi away | 24/7 | — |
| 4 | High Ground Service Pros - Plumbers Electricians & HVAC Technicians | 61 | 4.9★ (2,303) | Manchester, 9 mi away | 24/7 | — |
| 5 | Roto-Rooter Plumbing & Water Cleanup | 60 | 4.8★ (1,146) | Lowell, 18 mi away | 24/7 | — |
| 6 | Mainline Plumbing | 60 | 5.0★ (565) | Londonderry, 7 mi away | Sat · Evenings | — |
| 7 | Eric C. Foster Plumbing Heating & Cooling Inc. | 60 | 4.9★ (619) | Chelmsford, 18 mi away | 24/7 | — |
| 8 | Felix, A Wind River Company | 60 | 4.9★ (609) | Concord, 19 mi away | 24/7 | — |
| 9 | Mr. Rooter Plumbing of Greater New Hampshire | 60 | 4.8★ (897) | Concord, 19 mi away | 24/7 | — |
| 10 | Artisan Plumbing & Heating, LLC | 59 | 4.9★ (49) | Merrimack | Sat · Sun | — |
The 350 best plumbers in Merrimack, ranked
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.
Based in Manchester, 7 mi away
61/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.7★ from 411 Google reviews, listed on Google as “Plumber”.
- 4.7★ from 411 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 862 S Porter St, Manchester, NH 03103
Based in Derry, 6 mi away
61/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 118 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 118 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Manchester, 9 mi away
61/100CR ScoreRanked #4 because of its Google rating and review volume: 4.9★ from 2,303 Google reviews.
- 4.9★ from 2,303 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 201 Allard Dr, Manchester, NH 03102
Based in Lowell, 18 mi away
60/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.8★ from 1,146 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 1,146 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 97 Central St Suite 400, Lowell, MA 01852
Based in Londonderry, 7 mi away
60/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 565 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 565 Google reviews
- Hours
- Mon–Fri 6 AM–6:30 PM · Sat 6 AM–2 PM · Sun closed
- Address
- 71 Mammoth Rd, Londonderry, NH 03053
Based in Chelmsford, 18 mi away
60/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 619 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 619 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 145 Stedman St, Chelmsford, MA 01824
Based in Concord, 19 mi away
60/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 609 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 609 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2 Thibeault Drive, Bow, NH 03304
Based in Concord, 19 mi away
60/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.8★ from 897 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 897 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 7 Tallwood Dr STE 3, Bow, NH 03304
Based in Merrimack
59/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 49 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 49 Google reviews
- Hours
- Mon–Sun 8 AM–6 PM
- Address
- 579 Daniel Webster Hwy unit 1B, Merrimack, NH 03054
#11 Paul The Plumber
Based in Derry, 8 mi away
59/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.8★ from 3,427 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 3,427 Google reviews
- Hours
- Mon–Fri 7:30 AM–4:30 PM · Sat–Sun closed
- Address
- 111 Franklin St Ext, Derry, NH 03038
Based in Auburn, 10 mi away
59/100CR ScoreRanked #12 because of its Google rating and review volume: 4.8★ from 7,956 Google reviews, the most in Merrimack.
- 4.8★ from 7,956 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 28 Commercial Ct, Auburn, NH 03032
Based in Bedford, 7 mi away
59/100CR ScoreRanked #13 because of its Google rating and review volume: 4.8★ from 683 Google reviews.
- 4.8★ from 683 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 45 S River Rd, Bedford, NH 03110
Based in Nashua, 6 mi away
58/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 348 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 348 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 230 Amherst St Unit 103, Nashua, NH 03063
Based in Hudson, 3 mi away
58/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 374 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 374 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
Based in Litchfield, 6 mi away
58/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.9★ from 320 Google reviews, listed on Google as “Air conditioning contractor”.
- 4.9★ from 320 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 17 Old Nashua Rd Unit 1B, Amherst, NH 03031
Based in Manchester, 8 mi away
58/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.9★ from 454 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 454 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 326 Lincoln St, Manchester, NH 03103
Based in Merrimack
58/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 213 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 213 Google reviews
- Hours
- Mon–Fri 7 AM–3 PM · Sat–Sun closed
- Address
- 11 Jakes Ln, Merrimack, NH 03054
Based in Hudson, 6 mi away
58/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.4★ from 71 Google reviews, listed on Google as “Drainage service”.
- 4.4★ from 71 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 140 Old Derry Rd, Hudson, NH 03051
Based in Fitchburg, 15 mi away
58/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.9★ from 108 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 108 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 129 Chestnut St, Pepperell, MA 01463
Based in Westford, 17 mi away
58/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 111 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 111 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 39 Lawson Rd, Westford, MA 01886
Based in Dracut, 18 mi away
58/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 113 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 113 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 10 Washington Ave, Dracut, MA 01826
#23 Plumr
Based in North Andover, 21 mi away
58/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 286 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 286 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 8 Marblehead St B, North Andover, MA 01845
Based in Billerica, 15 mi away
58/100CR ScoreRanked #24 because of its Google rating and review volume: 4.8★ from 1,626 Google reviews.
- 4.8★ from 1,626 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 116 Pawtucket Blvd, Tyngsborough, MA 01879
Based in Dracut, 16 mi away
58/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 189 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 189 Google reviews
- Hours
- Mon–Fri 7:30 AM–6 PM · Sat–Sun 8 AM–4 PM
Plumbers ranked #26 to #50
#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 350 ranked plumbers here; the rest are on their profiles.
Also serving Merrimack
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) | 21 mi |
| A.L.I. Plumbing Services | 3.6★ (22) | 8 mi |
| Allied plumbing and heating | 5.0★ (2) | 6 mi |
| American Tank Management Inc | 1.0★ (2) | 9 mi |
| Borelli Plumbing & Heating | 5.0★ (2) | 8 mi |
| Capeless Plumbing & Heating | 5.0★ (31) | 20 mi |
| Dacare the Plumber | 5.0★ (2) | 13 mi |
| Dave Pollock Plumbing | 3.0★ (2) | In Merrimack |
| Denommee Plumbing, HVAC & Electric | 4.7★ (427) | 15 mi |
| Gideon Plumbing Services | 5.0★ (29) | 18 mi |
| Harley Weymouth Plumbing & Heating | 5.0★ (2) | 15 mi |
| James Gardner Plumbing & Heating LLC | 5.0★ (2) | 14 mi |
| Jeff's Drains | 4.8★ (102) | 23 mi |
| Jet Plumbing & Heating, Inc. | 5.0★ (2) | 18 mi |
| Krafton plumbing and heating | 5.0★ (2) | 19 mi |
| LHR Plumbing, Heating & AC Repair | 4.9★ (128) | 10 mi |
| Mikey Pipes Plumbing & Heating LLC | 5.0★ (2) | 15 mi |
| Precision Plumbing | 5.0★ (2) | 10 mi |
| Sewer Works | 5.0★ (2) | 4 mi |
| Tyngsboro Plumbing & Heating | 5.0★ (2) | 16 mi |
How much do plumbers cost in Merrimack?
National price ranges in USD, not adjusted for Merrimack. 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 |
How to check a plumber's license in New Hampshire
In New Hampshire, New Hampshire Office of Professional Licensure and Certification licenses Plumber licenses (Mechanical Licensing Board).
- Check that the status is active and the name matches the contract or truck.
- Ask for proof of insurance before work starts.
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
How we ranked Merrimack plumbers
We scored 350 Merrimack 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 Merrimack 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 |
Plumbers in Merrimack: frequently asked questions
Who is the best plumber in Merrimack?
By CR Score, the highest-ranked plumber in Merrimack, NH is Priority Plumbing with a CR Score of 62/100. It has 4.9★ from 149 Google reviews. It is open 24/7. Roto-Rooter Plumbing & Water Cleanup (#2) and Flow Pro Plumbing and Drain Cleaning (#3) follow. We ranked 350 plumbers on ten factors, last updated October 22, 2026.
How many plumbers are there in Merrimack?
ContractorsRanked ranks 350 plumbers serving Merrimack, NH. 2 of them are based in Merrimack; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which plumbers in Merrimack are open 24/7?
109 ranked plumbers in Merrimack post 24/7 hours. The highest-ranked are Priority Plumbing (#1), Roto-Rooter Plumbing & Water Cleanup (#2) and Flow Pro Plumbing and Drain Cleaning (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which plumbers in Merrimack work on weekends?
179 of 350 ranked plumbers post Saturday hours and 137 post Sunday hours. The highest-ranked open Saturdays are Priority Plumbing (#1), Roto-Rooter Plumbing & Water Cleanup (#2) and Flow Pro Plumbing and Drain Cleaning (#3). Posted hours are office hours; crews may book weekend jobs separately.
How do I check a plumber's license in New Hampshire?
In New Hampshire, New Hampshire Office of Professional Licensure and Certification handles licensing and covers Plumber licenses (Mechanical Licensing Board).
How much does water heater replacement cost in Merrimack?
Water heater replacement typically costs $882 to $1,826, with $1,348 typical (Per unit, installed (unit plus labor); typical range of customer-reported jobs. US national range). This is a national range, not adjusted for Merrimack. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Merrimack plumbers have?
The median Google rating among 350 rated plumbers in Merrimack is 4.9★, with a median of 20 reviews. Heritage Home Service has the most, 7,956 reviews, and ranks #12. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank plumbers?
Each plumber gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Update log for Merrimack
- October 2026: CR Scores recalculated for 350 plumbers serving Merrimack.
- October 2026: 2 duplicate listings merged.
More plumbers and Merrimack pages
Plumbers near Merrimack
- Plumbers in Litchfield, NH365 ranked
- Plumbers in Bedford, NH297 ranked
- Plumbers in Londonderry, NH398 ranked
- Plumbers in Nashua, NH436 ranked
- Plumbers in Hudson, NH456 ranked
- Plumbers in Milford, NH286 ranked
- Plumbers in Derry, NH411 ranked
- Plumbers in Manchester, NH273 ranked
- Plumbers in Derry Village, NH407 ranked
- Plumbers in Hollis, NH363 ranked
Other trades in Merrimack
- Roofers in Merrimack817 ranked
- Electricians in Merrimack338 ranked
- HVAC contractors in Merrimack526 ranked
- General contractors in Merrimack469 ranked
- Painters in Merrimack124 ranked
- Landscapers in Merrimack203 ranked
- Handymen in Merrimack55 ranked
- Kitchen remodelers in Merrimack260 ranked
- Bathroom remodelers in Merrimack244 ranked
- Flooring contractors in Merrimack178 ranked
- Tile installers in Merrimack27 ranked
- Drywall contractors in Merrimack17 ranked
- Concrete contractors in Merrimack91 ranked
- Fence contractors in Merrimack80 ranked
- Deck builders in Merrimack144 ranked
- Siding contractors in Merrimack418 ranked
- Window installers in Merrimack335 ranked
- Gutter installers in Merrimack102 ranked
- Insulation contractors in Merrimack53 ranked
- Solar installers in Merrimack117 ranked
- Garage door repair companies in Merrimack44 ranked
- Foundation repair companies in Merrimack130 ranked
- Tree services in Merrimack175 ranked
- Masonry contractors in Merrimack192 ranked
- Water damage restoration companies in Merrimack316 ranked
- Home builders in Merrimack385 ranked
- Demolition contractors in Merrimack44 ranked
- All contractors in Merrimack