62/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.7★ from 91 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Best Pool Builders in Merrimack, NH (2026)
158 pool builders ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Merrimack: Gunite Pool Renovators, CR Score 62/100; 4.7★ from 91 Google reviews; open 24/7.
- 6
Best for emergencies (open 24/7): SSG Pools, posts 24/7 hours; ranked #6 of 158.
- 4
Most-reviewed: Reeds Ferry Sheds, 1,193 Google reviews at 5.0★, the most of 158 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
158 Merrimack pool builders are ranked here by CR Score, from ten published factors. 12 are open 24/7, 102 open Saturdays and 40 open Sundays, based on posted hours. The median Google rating is 4.6★ across 158 rated businesses.
Most of this list also appears on the Pool builders in Manchester ranking. See Pool builders in Manchester
Top 10 pool builders in Merrimack at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Gunite Pool Renovators | 62 | 4.7★ (91) | Nashua, 2 mi away | 24/7 | Overall |
| 2 | Matley Pools and Spas | 60 | 4.9★ (374) | Fitchburg, 13 mi away | Sat | — |
| 3 | E-Z Test Pool Supplies | 60 | 4.7★ (192) | Derry, 9 mi away | Sat · Sun | — |
| 4 | Reeds Ferry Sheds | 60 | 5.0★ (1,193) | Hudson, 5 mi away | Sat · Sun | Most reviews |
| 5 | St. Cyr Pool & Spa | 59 | 4.6★ (245) | Hampstead, 16 mi away | Sat · Sun | — |
| 6 | SSG Pools | 59 | 4.6★ (37) | Hollis, 6 mi away | 24/7 | Emergencies |
| 7 | E-Z Test Pool Supplies | 58 | 4.6★ (220) | Plaistow, 20 mi away | Sat · Sun | — |
| 8 | New England Spas Natick | 58 | 4.8★ (512) | Natick, 40 mi away | Sat · Sun | — |
| 9 | Advanced Spa And Pool (ASAP) | 58 | 4.5★ (232) | Hudson, 9 mi away | Sat | — |
| 10 | St Cyr Pool & Spa | 58 | 4.7★ (910) | Middleton, 32 mi away | Sat | — |
The 158 best pool builders in Merrimack, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Fitchburg, 13 mi away
60/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 374 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Derry, 9 mi away
60/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.7★ from 192 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hudson, 5 mi away
60/100CR ScoreRanked #4 because of its Google rating and review volume: 5.0★ from 1,193 Google reviews, the most in Merrimack.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hampstead, 16 mi away
59/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.6★ from 245 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#6 SSG Pools
Based in Hollis, 6 mi away
59/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.6★ from 37 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Plaistow, 20 mi away
58/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.6★ from 220 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Natick, 40 mi away
58/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.8★ from 512 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hudson, 9 mi away
58/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.5★ from 232 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Middleton, 32 mi away
58/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.7★ from 910 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#11 Littleton Pools
Based in Leominster, 21 mi away
57/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.9★ from 106 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Haverhill, 18 mi away
57/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.8★ from 44 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#13 SSG Pools
Based in Acton, 23 mi away
56/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.6★ from 203 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Haverhill, 13 mi away
56/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bedford, 8 mi away
56/100CR ScoreRanked #15 because of its Google rating and trade focus: 3.8★ from 181 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Londonderry, 7 mi away
56/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.3★ from 94 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in North Reading, 27 mi away
56/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.8★ from 79 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hudson, 9 mi away
56/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.7★ from 6 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#19 SSG Pools
Based in Hudson, 14 mi away
55/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.6★ from 10 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Manchester, 9 mi away
55/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.4★ from 58 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Portsmouth, 34 mi away
55/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.7★ from 98 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Manchester, 7 mi away
55/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.2★ from 59 Google reviews, listed on Google as “Swimming pool repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#23 Surfside Pool Co
Based in Hollis, 6 mi away
55/100CR ScoreRanked #23 because of its Google rating and trade focus: 3.6★ from 28 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#24 Juliano's Pools
Based in Manchester, 7 mi away
55/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.9★ from 40 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#25 Affordable Pools
Based in Hudson, 5 mi away
54/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.4★ from 21 Google reviews, listed on Google as “Swimming pool contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
How we ranked Merrimack pool builders
We scored 158 Merrimack pool builders 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 November 3, 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 |
Pool builders in Merrimack: frequently asked questions
Who is the best pool builder in Merrimack?
By CR Score, the highest-ranked pool builder in Merrimack, NH is Gunite Pool Renovators with a CR Score of 62/100. It has 4.7★ from 91 Google reviews. It is open 24/7. Matley Pools and Spas (#2) and E-Z Test Pool Supplies (#3) follow. We ranked 158 pool builders on ten factors, last updated November 3, 2026.
Which pool builders in Merrimack are open 24/7?
12 ranked pool builders in Merrimack post 24/7 hours. The highest-ranked are Gunite Pool Renovators (#1), SSG Pools (#6) and SSG Pools (#13). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which pool builders in Merrimack work on weekends?
102 of 158 ranked pool builders post Saturday hours and 40 post Sunday hours. The highest-ranked open Saturdays are Gunite Pool Renovators (#1), Matley Pools and Spas (#2) and E-Z Test Pool Supplies (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Merrimack pool builders have?
The median Google rating among 158 rated pool builders in Merrimack is 4.6★, with a median of 22 reviews. Reeds Ferry Sheds has the most, 1,193 reviews, and ranks #4. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank pool builders?
Each pool builder 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.
Do pool builders outside Merrimack count in this ranking?
Yes, if they are within 40 mi of the Merrimack city center, our service radius for pool builders. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.
Can pool builders pay to rank higher on ContractorsRanked?
No. The CR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured businesses may appear above the list, labelled Featured and showing their honest rank.
Update log for Merrimack
- November 2026: CR Scores recalculated for 158 pool builders serving Merrimack.
- November 2026: 3 duplicate listings merged.
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