Skip to content
ContractorsRanked

Emergency Plumbers in Thunder Bay, ON (2026)

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

8 of the 24 plumbers on this list post 24/7 hours. 24/7 businesses come first, then same-day, each ranked by CR Score with availability weighted higher.

Burst pipe or major leak: shut off the main water valve first. If water reaches outlets or the panel, stay clear and call 911.

The short answer

  1. 1

    #1 for emergency plumbing in Thunder Bay: Reliance Heating, Air Conditioning & Plumbing, open 24/7.

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

Top emergency plumbers in Thunder Bay at a glance

Top emergency plumbers in Thunder Bay at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Reliance Heating, Air Conditioning & Plumbing644.6★ (1,614)Thunder Bay24/7
2Clow Darling Limited614.1★ (70)Thunder Bay24/7
3B. Gibson Mechanical614.2★ (52)Thunder Bay24/7
4Bud's Thunder Bay Pressure Clean Ltd595.0★ (10)Thunder Bay24/7
5Axel's Water & Plumbing Centre583.3★ (9)Thunder Bay24/7
6Thermal Mechanical Systems Inc.533.7★ (22)Thunder Bay24/7
7Dollar Contracting Ltd.515.0★ (4)Thunder Bay24/7
8Thunder Bay Outdoor Services514.0★ (4)Thunder Bay24/7
9The Rooterman514.7★ (26)Thunder Bay—
10Robert's Plumbing & Sheet Metal Co473.9★ (114)Thunder Bay—

Call an emergency plumber in Thunder Bay now

24/7 hours mean the business says its phone is answered around the clock. Arrival time depends on where the crew is. Ask for an arrival window when you call.

The 24 emergency plumbers in Thunder Bay, ranked

24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights.

  2. #2 Clow Darling Limited

    Based in Thunder Bay

    61/100CR Score

    Ranked #2 because of its Google rating and trade focus: 4.1★ from 70 Google reviews, listed on Google as “Plumber”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.1★ from 70 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1201 Cameron St, Thunder Bay, ON P7C 0A1
    View profile for Clow Darling Limited(807) 623-7485

  3. #3 B. Gibson Mechanical

    Based in Thunder Bay

    61/100CR Score

    Ranked #3 because of its Google rating and trade focus: 4.2★ from 52 Google reviews, listed on Google as “Plumber”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.2★ from 52 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    319 May St N, Thunder Bay, ON P7C 3R1
    View profile for B. Gibson Mechanical(807) 631-9060

  7. #7 Dollar Contracting Ltd.

    Based in Thunder Bay

    51/100CR Score

    Ranked #7 because of its Google rating and availability: 5.0★ from 4 Google reviews, open 24/7.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 5.0★ from 4 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    48 Carl Ave, Thunder Bay, ON P7B 4Z2
    View profile for Dollar Contracting Ltd.(807) 709-7997

  9. #9 The Rooterman

    Based in Thunder Bay

    51/100CR Score

    Ranked #9 because of its Google rating and trade focus: 4.7★ from 26 Google reviews, listed on Google as “Plumber”.

    Based on 7 of 10 factors; credentials, recency and availability not yet collected.

    • 4.7★ from 26 Google reviews
    View profile for The Rooterman(807) 624-8591

  12. #12 A Villeneuve Mechanical Ltd

    Based in Thunder Bay

    42/100CR Score

    Ranked #12 because of its Google rating and trade focus: 4.7★ from 36 Google reviews, listed on Google as “Plumber”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.7★ from 36 Google reviews
    Hours
    Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
    Address
    750 Harold Crescent, Thunder Bay, ON P7C 5H7
    View profile for A Villeneuve Mechanical Ltd(807) 622-8835

  13. #13 Craig Plumbing Centre

    Based in Thunder Bay

    41/100CR Score

    Ranked #13 because of its Google rating and trade focus: 4.0★ from 49 Google reviews, listed on Google as “Plumber”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.0★ from 49 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat 10 AM–2 PM · Sun closed
    Address
    1263 Amber Dr, Thunder Bay, ON P7B 6M4
    View profile for Craig Plumbing Centre(807) 345-1137

  15. #15 Chaschuk Enterprises Ltd

    Based in Thunder Bay

    40/100CR Score

    Ranked #15 because of its Google rating and trade focus: 4.7★ from 13 Google reviews, listed on Google as “Septic system service”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.7★ from 13 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    36 Barrie Dr, Thunder Bay, ON P7J 0C6
    View profile for Chaschuk Enterprises Ltd(807) 629-1333

  18. #18 Adept Plumbing & Mechanical

    Based in Thunder Bay

    40/100CR Score

    Ranked #18 because of its Google rating and trade focus: 4.1★ from 10 Google reviews, listed on Google as “Plumber”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.1★ from 10 Google reviews
    Hours
    Mon–Fri 8:30 AM–4:30 PM · Sat–Sun closed
    Address
    555 Dunlop St, Thunder Bay, ON P7B 6S1
    View profile for Adept Plumbing & Mechanical(807) 622-3378

  19. #19 Flow Water & Drains

    Based in Thunder Bay

    39/100CR Score

    Ranked #19 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Plumber”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 5.0★ from 4 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    View profile for Flow Water & Drains(807) 358-3569

  20. #20 Groundhogs™

    Based in Thunder Bay

    39/100CR Score

    Ranked #20 because of its Google rating and review volume: 4.9★ from 113 Google reviews.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.9★ from 113 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun closed
    Address
    415 Fort William Rd, Thunder Bay, ON P7B 2Z5
    View profile for Groundhogs™(888) 907-3777

  22. #22 Superior Septic Services

    Based in Thunder Bay

    38/100CR Score

    Ranked #22 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Septic system service”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 5.0★ from 3 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    View profile for Superior Septic Services(807) 621-0849

  23. #23 Superior Yard Works

    Based in Thunder Bay

    36/100CR Score

    Ranked #23 because of its Google rating and trade focus: 4.9★ from 33 Google reviews, listed on Google as “Waterproofing service”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.9★ from 33 Google reviews
    Hours
    Mon–Fri 7 AM–7 PM · Sat 7 AM–5 PM · Sun closed
    View profile for Superior Yard Works(807) 355-4954

  24. #24 Carroll’s service

    Based in Thunder Bay

    34/100CR Score

    Ranked #24 because of its Google rating and trade focus: 4.6★ from 10 Google reviews, listed on Google as “Excavating contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.6★ from 10 Google reviews
    Hours
    Mon–Sat 8 AM–7 PM · Sun closed
    Address
    1560 Hwy 61, Thunder Bay, ON P7J 1B4
    View profile for Carroll’s service(807) 356-1811

How we ranked emergency plumbers in Thunder Bay

Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 plumbers are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

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 from
Reputation15%Google star rating, adjusted for how many reviews back it
Credentials15%Active state license, bond and workers’ comp on file
Review volume10%Number of Google reviews, compared with the most-reviewed business on the list
Recency5%Share of reviews from the last 12 months
Availability15%Weekly open hours, Saturday, Sunday, 24/7 or same-day
Trade focus10%How clearly the business does this trade (its Google category and name)
Proximity5%Based in the city scores highest, less the farther away it is
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodically
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there are

Emergency plumbers in Thunder Bay: questions

Which plumbers in Thunder Bay are open 24/7?

8 on this list post 24/7 hours, including Reliance Heating, Air Conditioning & Plumbing, Clow Darling Limited, B. Gibson Mechanical, Bud's Thunder Bay Pressure Clean Ltd and Axel's Water & Plumbing Centre.

Who is ranked #1 for emergency plumbing in Thunder Bay, ON?

Reliance Heating, Air Conditioning & Plumbing is #1, with a CR Score of 64 out of 100 on emergency weights.

How are emergency plumbers in Thunder Bay ranked?

Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 plumbers are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

What should I do before the plumber arrives?

Burst pipe or major leak: shut off the main water valve first. If water reaches outlets or the panel, stay clear and call 911.

How many emergency plumbers here list a phone number?

24 of the 24 businesses ranked in full list a phone number. Tap Call to dial it.

Update log for Thunder Bay

  1. October 2026: CR Scores recalculated for 24 plumbers serving Thunder Bay.

More emergency and plumbing pages