23 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in St. John's: Avalon Plumbing & Heating Ltd, CR Score 94/100; 4.9★ from 216 Google reviews; open 24/7.
Best for emergencies (open 24/7): Mr. Rooter Plumbing of St. John's, posts 24/7 hours; ranked #2 of 23.
Most-reviewed: Mr. Rooter Plumbing of St. John's, 518 Google reviews at 4.6★, the most of 23 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
23 St. John's plumbers are ranked here by CR Score, from 8 published factors. 6 are open 24/7, 11 open Saturdays and 10 open Sundays, based on posted hours. The median Google rating is 4.7★ across 23 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Avalon Plumbing & Heating Ltd | 94 | 4.9★ (216) | St. John's | 24/7 | Overall |
| 2 | Mr. Rooter Plumbing of St. John's | 94 | 4.6★ (518) | St. John's | 24/7 | Emergencies, Most reviews |
| 3 | King's Plumbing & Heating Ltd | 89 | 4.7★ (45) | St. John's | 24/7 | — |
| 4 | Hubley's Plumbing & Heating | 89 | 4.5★ (69) | St. John's | 24/7 | — |
| 5 | Butler's Plumbing LTD | 86 | 5.0★ (50) | Conception Bay South, 19 km away | 24/7 | — |
| 6 | Klein Plumbing | 86 | 5.0★ (31) | St. John's | Sat · Sun · Evenings | — |
| 7 | Kean's Pump Shop Ltd | 85 | 3.8★ (16) | St. John's | 24/7 | — |
| 8 | Keith's Plumbing Ltd | 82 | 5.0★ (13) | St. John's | — | — |
| 9 | AMBZ Property Service Inc | 79 | 5.0★ (105) | St. John's | Sat | — |
| 10 | Rogers R S Ltd | 79 | 5.0★ (3) | St. John's | — | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and availability: 4.9★ from 216 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in St. John's
Ranked #2 because of its Google rating and review volume: 4.6★ from 518 Google reviews, the most Google reviews on this list (518).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in St. John's
Ranked #3 because of its Google rating and availability: 4.7★ from 45 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in St. John's
Ranked #4 because of its Google rating and availability: 4.5★ from 69 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Conception Bay South, 19 km away
Ranked #5 because of its Google rating and availability: 5.0★ from 50 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in St. John's
Ranked #6 because of its Google rating and trade focus: 5.0★ from 31 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in St. John's
Ranked #7 because of its Google rating and availability: 3.8★ from 16 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in St. John's
Ranked #8 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Plumber”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in St. John's
Ranked #9 because of its Google rating and review volume: 5.0★ from 105 Google reviews, 105 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in St. John's
Ranked #10 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in St. John's
Ranked #11 because of its Google rating and trade focus: 3.7★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Mount Pearl, 9 km away
Ranked #12 because of its Google rating and trade focus: 4.7★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Conception Bay South, 15 km away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in St. John's
Ranked #14 because of its Google rating and availability: 4.7★ from 13 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Mount Pearl, 13 km away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 26 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Conception Bay South, 17 km away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in St. John's
Ranked #17 because of its Google rating and trade focus: 4.2★ from 26 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Conception Bay South, 18 km away
Ranked #18 because of its Google rating and trade focus: 4.7★ from 13 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in St. John's
Ranked #19 because of its Google rating and trade focus: 4.3★ from 44 Google reviews, listed on Google as “Heating contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in St. John's
Ranked #20 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Conception Bay South, 21 km away
Ranked #21 because of its Google rating and trade focus: 4.3★ from 12 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Conception Bay South, 13 km away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Conception Bay South, 20 km away
Ranked #23 because of its Google rating and trade focus: 3.4★ from 10 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
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.
| Business | Google rating | Distance |
|---|---|---|
| Ace Plumbing & Heating | 8 km | |
| Aiden Denine Plumbing and Heating | In St. John's | |
| Air-Tite Sheet Metal Ltd | 5.0★ (2) | In St. John's |
| Arch Rose Plumbing | 4.0★ (1) | In St. John's |
| Budget Plumbing & Heating Ltd. | In St. John's | |
| Cardon Plumbing | 15 km | |
| Carriage House Mechanical Ltd | 5.0★ (2) | In St. John's |
| Dirty Plumbing | 12 km | |
| Eastpoint Plumbing And Heating Inc | 13 km | |
| H & R Mechanical Supplies Ltd | In St. John's | |
| McCarthy's Mechanical Ltd | 1.0★ (1) | 20 km |
| Noseworthy's Plumbing Ltd | In St. John's | |
| O'neill's Plumbing & Heating | 9 km | |
| Plumbing Xperts | 3.0★ (2) | In St. John's |
| Summit Mechanical Services | 5.0★ (2) | 11 km |
| The Boiler Exchange Inc. | 10 km | |
| TLC Services & Lawn Care | 9 km | |
| Total Home Renovations | 3.8★ (18) | In St. John's |
| void | In St. John's | |
| Williams 2000 Ltd Plumbing & Heating | 5.0★ (1) | In St. John's |
US national ranges converted to CAD, not adjusted for St. John's. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Water heater replacement | CA$1,240 | CA$1,890 | CA$2,570 | 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) | October 2026 |
We scored 23 St. John's plumbers on 8 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. Unknown factors are left out of the score, 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.
| Factor | Weight | Computed from | In St. John's data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |