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Best Plumbers in Hamilton, ON (2026)

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

The short answer

  1. 1

    Best overall in Hamilton: Lakeview Plumbing Services, CR Score 63/100; 5.0★ from 233 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Drain Unit, posts 24/7 hours; ranked #2 of 355.

  3. 5

    Most-reviewed: Reliance Heating, Air Conditioning & Plumbing, 27,515 Google reviews at 4.8★, the most of 355 ranked; ranked #5.

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

355 Hamilton plumbers are ranked here by CR Score, from ten published factors. 180 are open 24/7, 255 open Saturdays and 220 open Sundays, based on posted hours. The median Google rating is 5.0★ across 355 rated businesses.

Top 10 plumbers in Hamilton at a glance

Top 10 plumbers in Hamilton at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Lakeview Plumbing Services635.0★ (233)Hamilton24/7Overall
2Drain Unit625.0★ (172)Hamilton24/7Emergencies
3PLUMBER ON DEMAND of HAMILTON, ON625.0★ (162)Hamilton24/7—
4Birnie Plumbing and Drains624.5★ (1,264)Hamilton24/7—
5Reliance Heating, Air Conditioning & Plumbing624.8★ (27,515)Burlington, 13 km away24/7Most reviews
6Roto-Rooter Plumbing & Water Cleanup614.8★ (157)Hamilton24/7—
7a Rescue Rooter614.7★ (224)Hamilton24/7—
8John The Plumber614.8★ (474)HamiltonSat · Sun · Evenings—
9In-Out Plumbing Inc615.0★ (190)Hamilton24/7—
10Flow Plumbing615.0★ (55)Hamilton24/7—

The 355 best plumbers in Hamilton, 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.

  2. #2 Drain Unit

    Based in Hamilton

    62/100CR Score

    Ranked #2 because of its Google rating and trade focus: 5.0★ from 172 Google reviews, listed on Google as “Drainage service”.

    • 5.0★ from 172 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    500 Stone Church Rd W, Hamilton, ON L9B 1R2
    View profile for Drain Unit(647) 963-1420

  7. #7 a Rescue Rooter

    Based in Hamilton

    61/100CR Score

    Ranked #7 because of its Google rating and trade focus: 4.7★ from 224 Google reviews, listed on Google as “Plumber”.

    • 4.7★ from 224 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    440 Lake Ave N, Hamilton, ON L8E 3C2
    View profile for a Rescue Rooter(905) 521-8284

  8. #8 John The Plumber

    Based in Hamilton

    61/100CR Score

    Ranked #8 because of its Google rating and trade focus: 4.8★ from 474 Google reviews, listed on Google as “Plumber”.

    • 4.8★ from 474 Google reviews
    Hours
    Mon–Sun 7:30 AM–11 PM
    Address
    38 Gledhill Crescent, Hamilton, ON L9C 6H4
    View profile for John The Plumber(647) 492-1796

  10. #10 Flow Plumbing

    Based in Hamilton

    61/100CR Score

    Ranked #10 because of its Google rating and trade focus: 5.0★ from 55 Google reviews, listed on Google as “Plumber”.

    • 5.0★ from 55 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    36 Albert St, Hamilton, ON L8M 2X9
    View profile for Flow Plumbing(905) 981-5010

  20. #20 John The Plumber

    Based in Hamilton

    60/100CR Score

    Ranked #20 because of its Google rating and trade focus: 4.8★ from 187 Google reviews, listed on Google as “Plumber”.

    • 4.8★ from 187 Google reviews
    Hours
    Mon 7 AM–11 PM · Tue–Sun 7:30 AM–11 PM
    Address
    129 Melrose Ave S #1, Hamilton, ON L8M 2Y7
    View profile for John The Plumber(647) 692-2258

  25. #25 BRH Plumbing

    Based in Hamilton

    59/100CR Score

    Ranked #25 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Plumber”.

    • 5.0★ from 24 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    185 Springside Dr, Hamilton, ON L9B 1M8
    View profile for BRH Plumbing(905) 520-7175

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 355 ranked plumbers here; the rest are on their profiles.

plumbers in Hamilton, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Water Pro Drain595.0★ (62)9 km
27Civic Plumbing595.0★ (68)11 km
28Mountain Grove Plumbing & Drains594.9★ (100)12 km
29Drain Rescue Plumbers Hamilton595.0★ (19)In Hamilton
30John The Plumber594.7★ (207)14 km
31Greg's Plumbing and Heating Inc.594.6★ (186)10 km
32Royal Flush Plumbing & Renovations594.4★ (85)In Hamilton
33Rosedale Plumbing of Hamilton595.0★ (16)In Hamilton
34JM Plumbing Care594.9★ (193)In Hamilton
35Mr Rooter Plumbing of Mississauga ON594.8★ (2,362)38 km
36Boonstra Heating and Air Conditioning594.7★ (4,641)In Hamilton
37ProResults Plumbing Oakville – Residential & Commercial Services595.0★ (117)20 km
38Rooter Guys, Inc.584.4★ (45)In Hamilton
39Groves Wm Ltd584.2★ (155)In Hamilton
40Bos Plumbing And Drains Inc585.0★ (107)21 km
41Harb Plumbing584.6★ (221)15 km
42PLUMBER ON DEMAND of ANCASTER, ON584.8★ (168)19 km
43Utter Plumbing Inc.585.0★ (84)9 km
44Pacific Plumbing & Pumping Services Inc.584.7★ (71)In Hamilton
45Harb Plumbing584.9★ (577)34 km
46LT Plumbing & Drain Services Inc.585.0★ (24)7 km
47MacRory Plumbing Inc.585.0★ (111)23 km
48Advisor Plumbing585.0★ (32)In Hamilton
49West Harbour Plumbing585.0★ (32)In Hamilton
50The Hamilton Plumber585.0★ (28)In Hamilton

Also serving Hamilton

20 more plumbers within 40 km that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.

Unranked plumbers serving Hamilton
BusinessGoogle ratingDistance
Aberdeen Plumbing5.0★ (1)In Hamilton
B & L Sewer and Water INC5.0★ (54)In Hamilton
Drain Rescue Plumbers Hamilton3.7★ (41)In Hamilton
Flash Drains5.0★ (1)In Hamilton
Gauthier Plumbing4.5★ (14)In Hamilton
Gazda Plumbing5.0★ (1)In Hamilton
Great Choice PlumbingIn Hamilton
Guest Plumbing & HVAC Hamilton - Commercial & Residential Services5.0★ (1)In Hamilton
Hamilton City Plumbers5.0★ (1)In Hamilton
Hamilton Plumbing ServicesIn Hamilton
Hill's Plumbing Service Inc.5.0★ (2)In Hamilton
Mr Rooter4.1★ (46)In Hamilton
Ottawa Plumbing & HVAC & ElectricIn Hamilton
PDM Plumbing5.0★ (36)14 km
Plumber HamiltonIn Hamilton
Pro Line Plumbers HamiltonIn Hamilton
RESOLUTION PLUMBING5.0★ (15)7 km
Roto-Rooter Plumbing & Water Cleanup4.7★ (38)11 km
Russell's Plumbing5.0★ (1)In Hamilton
Urbanexs.ca3.9★ (17)In Hamilton

How much do plumbers cost in Hamilton?

US national ranges converted to CAD, not adjusted for Hamilton. Each row names its basis and the month we checked it.

How much do plumbers cost in Hamilton?
JobLowTypicalHighBasisChecked
Water heater replacementCA$1,240CA$1,890CA$2,570Per unit, installed (unit plus labor); typical range of customer-reported jobs. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026)October 2026

How we ranked Hamilton plumbers

We scored 355 Hamilton 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 Hamilton 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 Hamilton: frequently asked questions

Who is the best plumber in Hamilton?

By CR Score, the highest-ranked plumber in Hamilton, ON is Lakeview Plumbing Services with a CR Score of 63/100. It has 5.0★ from 233 Google reviews. It is open 24/7. Drain Unit (#2) and PLUMBER ON DEMAND of HAMILTON, ON (#3) follow. We ranked 355 plumbers on ten factors, last updated October 22, 2026.

How many plumbers are there in Hamilton?

ContractorsRanked ranks 355 plumbers serving Hamilton, ON. 29 of them are based in Hamilton; the rest serve it from nearby towns. Another 20 within 40 km are listed but not ranked yet. Counts are as of October 2026.

Which plumbers in Hamilton are open 24/7?

180 ranked plumbers in Hamilton post 24/7 hours. The highest-ranked are Lakeview Plumbing Services (#1), Drain Unit (#2) and PLUMBER ON DEMAND of HAMILTON, ON (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which plumbers in Hamilton work on weekends?

255 of 355 ranked plumbers post Saturday hours and 220 post Sunday hours. The highest-ranked open Saturdays are Lakeview Plumbing Services (#1), Drain Unit (#2) and PLUMBER ON DEMAND of HAMILTON, ON (#3). Posted hours are office hours; crews may book weekend jobs separately.

How much does water heater replacement cost in Hamilton?

Water heater replacement typically costs CA$1,240 to CA$2,570, with CA$1,890 typical (Per unit, installed (unit plus labor); typical range of customer-reported jobs. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026)). This is a national range, not adjusted for Hamilton. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Hamilton plumbers have?

The median Google rating among 355 rated plumbers in Hamilton is 5.0★, with a median of 33 reviews. Reliance Heating, Air Conditioning & Plumbing has the most, 27,515 reviews, and ranks #5. 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.

Do plumbers outside Hamilton count in this ranking?

Yes, if they are within 40 km of the Hamilton city centre, our service radius for plumbers. 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.

Update log for Hamilton

  1. October 2026: CR Scores recalculated for 355 plumbers serving Hamilton.
  2. October 2026: 3 duplicate listings merged.

More plumbers and Hamilton pages

Other trades in Hamilton