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Best Plumbers in Old Greenwich, CT (2026)

978 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Old Greenwich: Roto-Rooter Plumbing & Water Cleanup, CR Score 64/100; 4.7★ from 2,274 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Roto-Rooter Plumbing & Water Cleanup, posts 24/7 hours; ranked #2 of 978.

  3. 7

    Most-reviewed: RR Plumbing Roto-Rooter, 3,823 Google reviews at 4.8★, the most of 978 ranked; ranked #7.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

978 Old Greenwich plumbers are ranked here by CR Score, from ten published factors. 408 are open 24/7, 617 open Saturdays and 481 open Sundays, based on posted hours. The median Google rating is 4.8★ across 978 rated businesses.

Most of this list also appears on the Plumbers in Stamford ranking. See Plumbers in Stamford

Top 10 plumbers in Old Greenwich at a glance

Top 10 plumbers in Old Greenwich at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Roto-Rooter Plumbing & Water Cleanup644.7★ (2,274)Stamford, 6 mi away24/7Overall
2Roto-Rooter Plumbing & Water Cleanup624.8★ (1,070)Mamaroneck, 11 mi away24/7Emergencies
3Roto-Rooter Plumbing & Water Cleanup624.8★ (648)White Plains, 10 mi away24/7—
4Team ASAP Home Improvement LLC625.0★ (254)Greenburgh, 9 mi away24/7—
51-Tom-Plumber615.0★ (1,133)Farmingdale, 20 mi away24/7—
6Clear Drains LLC615.0★ (78)Greenwich, 4 mi away24/7—
7RR Plumbing Roto-Rooter614.8★ (3,823)Queens Village, 23 mi away24/7Most reviews
8Zoom Drain614.8★ (149)Stamford, 4 mi away24/7—
9Roto-Rooter Plumbing & Water Cleanup614.8★ (1,574)Yonkers, 18 mi away24/7—
10Empire Sewer and Water CT615.0★ (54)Stamford, 3 mi away24/7—

The 978 best plumbers in Old Greenwich, 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.

  5. #5 1-Tom-Plumber

    Based in Farmingdale, 20 mi away

    61/100CR Score

    Ranked #5 because of its Google rating and trade focus: 5.0★ from 1,133 Google reviews, listed on Google as “Plumber”.

    • 5.0★ from 1,133 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    52 Central Dr, Farmingdale, NY 11735
    View profile for 1-Tom-Plumber(631) 532-8441

  6. #6 Clear Drains LLC

    Based in Greenwich, 4 mi away

    61/100CR Score

    Ranked #6 because of its Google rating and trade focus: 5.0★ from 78 Google reviews, listed on Google as “Plumber”.

    • 5.0★ from 78 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    19 Edgewood Dr, Greenwich, CT 06831
    View profile for Clear Drains LLC(203) 585-8533

  8. #8 Zoom Drain

    Based in Stamford, 4 mi away

    61/100CR Score

    Ranked #8 because of its Google rating and trade focus: 4.8★ from 149 Google reviews, listed on Google as “Plumber”.

    • 4.8★ from 149 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    130 Lenox Ave, Stamford, CT 06906
    View profile for Zoom Drain(203) 208-6830

  13. #13 A & B Plumbing

    Based in Greenwich, 10 mi away

    60/100CR Score

    Ranked #13 because of its Google rating and trade focus: 5.0★ from 138 Google reviews, listed on Google as “Plumber”.

    • 5.0★ from 138 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for A & B Plumbing(914) 510-5925

  21. #21 Mikey Drains

    Based in Bethpage, 5 mi away

    59/100CR Score

    Ranked #21 because of its Google rating and trade focus: 5.0★ from 38 Google reviews, listed on Google as “Plumber”.

    • 5.0★ from 38 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for Mikey Drains(516) 631-6502

Also serving Old Greenwich

1 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.

Unranked plumbers serving Old Greenwich
BusinessGoogle ratingDistance
Snake The Drain - Plumbing & Drain Services4.9★ (472)18 mi

How much do plumbers cost in Old Greenwich?

National price ranges in USD, not adjusted for Old Greenwich. Each row names its basis and the month we checked it.

How much do plumbers cost in Old Greenwich?
JobLowTypicalHighBasisChecked
Water heater replacement$882$1,348$1,826Per unit, installed (unit plus labor); typical range of customer-reported jobs. US national rangeOctober 2026

How to check a plumber's license in Connecticut

In Connecticut, Connecticut Department of Consumer Protection licenses Plumbing work: water supply, drain, waste and vent piping and fixtures.

  1. Search the business name or license number on the Connecticut Department of Consumer Protection license lookup.
  2. Check that the status is active and the name matches the contract or truck.
  3. 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 Old Greenwich plumbers

We scored 978 Old Greenwich 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.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Old Greenwich data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Credentials15%Active state license, bond and workers’ comp on fileNot yet collected
Review volume10%Number of Google reviews, compared with the most-reviewed business on the listMeasured
Recency5%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%How clearly the business does this trade (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)Measured
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodicallyMeasured
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there areMeasured

Plumbers in Old Greenwich: frequently asked questions

Who is the best plumber in Old Greenwich?

By CR Score, the highest-ranked plumber in Old Greenwich, CT is Roto-Rooter Plumbing & Water Cleanup with a CR Score of 64/100. It has 4.7★ from 2,274 Google reviews. It is open 24/7. Roto-Rooter Plumbing & Water Cleanup (#2) and Roto-Rooter Plumbing & Water Cleanup (#3) follow. We ranked 978 plumbers on ten factors, last updated October 22, 2026.

How many plumbers are there in Old Greenwich?

ContractorsRanked ranks 978 plumbers serving Old Greenwich, CT. Another 1 within 25 mi are listed but not ranked yet. Counts are as of October 2026.

Which plumbers in Old Greenwich are open 24/7?

408 ranked plumbers in Old Greenwich post 24/7 hours. The highest-ranked are Roto-Rooter Plumbing & Water Cleanup (#1), Roto-Rooter Plumbing & Water Cleanup (#2) and Roto-Rooter Plumbing & Water Cleanup (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which plumbers in Old Greenwich work on weekends?

617 of 978 ranked plumbers post Saturday hours and 481 post Sunday hours. The highest-ranked open Saturdays are Roto-Rooter Plumbing & Water Cleanup (#1), Roto-Rooter Plumbing & Water Cleanup (#2) and Roto-Rooter Plumbing & Water Cleanup (#3). Posted hours are office hours; crews may book weekend jobs separately.

How do I check a plumber's license in Connecticut?

In Connecticut, Connecticut Department of Consumer Protection handles licensing and covers Plumbing work: water supply, drain, waste and vent piping and fixtures. Search the business or license number at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx.

How much does water heater replacement cost in Old Greenwich?

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 Old Greenwich. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Old Greenwich plumbers have?

The median Google rating among 978 rated plumbers in Old Greenwich is 4.8★, with a median of 16 reviews. RR Plumbing Roto-Rooter has the most, 3,823 reviews, and ranks #7. 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 Old Greenwich

  1. October 2026: CR Scores recalculated for 978 plumbers serving Old Greenwich.
  2. October 2026: 6 duplicate listings merged.

More plumbers and Old Greenwich pages

Other trades in Old Greenwich