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Hennessey PlumbingPlumber in Southold, NY

Hennessey Plumbing is a plumber in Southold, NY, ranked #12 of 128 plumbers in Southold and rated 4.3 from 6 Google reviews. Open 24 hours a day, 7 days a week.

Southold, NYUpdated 0 paid placements in any rankingHow we rank

Call (631) 603-6901Website ↗

Key facts

Key facts about Hennessey Plumbing
Phone(631) 603-6901
Websitehennesseyplumbingnofo.com
HoursOpen 24 hours, 7 days a week
Google rating4.3 from 6 Google reviews

Trades

Each trade shows the evidence we matched it on.

Service area

Serves Southold and 11 towns within 25 miles: Riverhead, Calverton, Hampton Bays, Manorville, East Moriches, Wading River, Center Moriches, East Shoreham, Mastic, Ridge and Shirley.

Based in Southold, NYView on map

Opening hours

Opening hours for Hennessey Plumbing
DayHours
MondayOpen 24 hours
TuesdayOpen 24 hours
WednesdayOpen 24 hours
ThursdayOpen 24 hours
FridayOpen 24 hours
SaturdayOpen 24 hours
SundayOpen 24 hours
  • Open 24/7
  • Open evenings — no
  • Open Saturdays
  • Open Sundays
  • Emergency service

Typical plumbing prices

Typical plumbing prices
JobLowTypicalHigh
Water heater replacementPer unit, installed (unit plus labor); typical range of customer-reported jobs. US national range$882$1,348$1,826

Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.

Compare nearby plumbers

Hennessey Plumbing compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
Hennessey Plumbing (this business)—584.3 (6)—YesYes
Pipe Boss - Plumbing & Drain services#11585.0 (61)—YesYes0.0 mi
Two Brothers Sewer & Drain Cesspool Service#13584.6 (50)—YesYes0.0 mi

See all 128 ranked plumbers in Southold

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

4.3from 6 Google reviews

Hired Hennessey Plumbing? Write a review

Questions about Hennessey Plumbing

How is Hennessey Plumbing ranked in Southold?

Hennessey Plumbing is ranked #12 of 128 plumbers in Southold by CR Score, with 58 out of 100 as of October 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.

What are Hennessey Plumbing’s hours?

Hennessey Plumbing is open 24 hours a day, 7 days a week. Its listed hours are Open 24 hours, 7 days a week. On Saturdays it is open Open 24 hours, and on Sundays Open 24 hours. Hours come from the business listing; holiday hours may differ.

What areas does Hennessey Plumbing serve?

Serves Southold and 11 towns within 25 miles: Riverhead, Calverton, Hampton Bays, Manorville, East Moriches, Wading River, Center Moriches, East Shoreham, Mastic, Ridge and Shirley. The list is based on the business's location and the usual service radius for plumbing. Confirm your address is covered when you call.

What do Google reviews say about Hennessey Plumbing?

Hennessey Plumbing has a rating of 4.3 from 6 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

How do I contact Hennessey Plumbing?

Call Hennessey Plumbing on (631) 603-6901. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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Claiming is free. Correct your hours, trades and service area. The CR Score is recalculated from corrected data; payment never changes it.

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