246 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Marengo: ASAP Plumbing, CR Score 62/100; 4.9★ from 395 Google reviews; open 24/7.
Best for emergencies (open 24/7): Roto-Rooter Plumbing, Drain, & Water Damage Cleanup Service, posts 24/7 hours; ranked #2 of 246.
Most-reviewed: Black Diamond Plumbing & Mechanical Inc., 6,580 Google reviews at 4.9★, the most of 246 ranked; ranked #8.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
246 Marengo plumbers are ranked here by CR Score, from ten published factors. 104 are open 24/7, 149 open Saturdays and 114 open Sundays, based on posted hours. The median Google rating is 4.8★ across 246 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | ASAP Plumbing | 62 | 4.9★ (395) | Woodstock, 9 mi away | 24/7 | Overall |
| 2 | Roto-Rooter Plumbing, Drain, & Water Damage Cleanup Service | 62 | 4.8★ (4,676) | Rockford, 21 mi away | 24/7 | Emergencies |
| 3 | Roto-Rooter Plumbing & Water Cleanup | 62 | 4.9★ (1,119) | Crystal Lake, 16 mi away | 24/7 | — |
| 4 | Tidy Tank Plumbing, Sewer, and Septic | 62 | 4.9★ (1,127) | Crystal Lake, 16 mi away | 24/7 | — |
| 5 | A.C.T. Plumbing & Property Management, Inc. | 61 | 5.0★ (171) | Hampshire, 11 mi away | 24/7 | — |
| 6 | Hansen Heating, Plumbing & Air | 61 | 4.9★ (244) | Huntley, 12 mi away | 24/7 | — |
| 7 | Advantage Plumbing, Heating & Air Conditioning | 60 | 4.7★ (4,045) | Elgin, 24 mi away | 24/7 | — |
| 8 | Black Diamond Plumbing & Mechanical Inc. | 60 | 4.9★ (6,580) | McHenry, 17 mi away | 24/7 | Most reviews |
| 9 | 1-Tom-Plumber | 60 | 4.9★ (368) | Lake in the Hills, 16 mi away | 24/7 | — |
| 10 | Huntley Plumbing | 60 | 5.0★ (158) | Crystal Lake, 13 mi away | 24/7 | — |
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.
Ranked #1 because of its Google rating and trade focus: 4.9★ from 395 Google reviews, listed on Google as “Plumber”.
Based in Rockford, 21 mi away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 4,676 Google reviews, listed on Google as “Plumber”.
Based in Crystal Lake, 16 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 1,119 Google reviews, listed on Google as “Plumber”.
Based in Crystal Lake, 16 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 1,127 Google reviews, listed on Google as “Septic system service”.
Based in Hampshire, 11 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 171 Google reviews, listed on Google as “Plumber”.
Based in Huntley, 12 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 244 Google reviews, listed on Google as “Plumber”.
Based in Elgin, 24 mi away
Ranked #7 because of its Google rating and trade focus: 4.7★ from 4,045 Google reviews, listed on Google as “Plumber”.
Based in McHenry, 17 mi away
Ranked #8 because of its Google rating and review volume: 4.9★ from 6,580 Google reviews, the most in Marengo.
Based in Lake in the Hills, 16 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 368 Google reviews, listed on Google as “Plumber”.
Based in Crystal Lake, 13 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 158 Google reviews, listed on Google as “Plumber”.
Based in Elgin, 20 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 686 Google reviews, listed on Google as “Plumber”.
Based in Huntley, 4 mi away
Ranked #12 because of its Google rating and trade focus: 4.7★ from 47 Google reviews, listed on Google as “Plumber”.
Based in Fox Lake, 16 mi away
Ranked #13 because of its Google rating and trade focus: 4.6★ from 591 Google reviews, listed on Google as “Plumber”.
Based in Algonquin, 16 mi away
Ranked #14 because of its Google rating and trade focus: 4.8★ from 244 Google reviews, listed on Google as “Plumber”.
Based in Lake in the Hills, 15 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 146 Google reviews, listed on Google as “Plumber”.
Based in Barrington, 24 mi away
Ranked #16 because of its Google rating and trade focus: 4.8★ from 946 Google reviews, listed on Google as “Plumber”.
Based in Fox Lake, 25 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 639 Google reviews, listed on Google as “Plumber”.
Based in McHenry, 19 mi away
Ranked #18 because of its Google rating and trade focus: 4.7★ from 467 Google reviews, listed on Google as “Plumber”.
Based in Wauconda, 23 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 452 Google reviews, listed on Google as “Plumber”.
Based in Elgin, 22 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 229 Google reviews, listed on Google as “Plumber”.
Based in Elgin, 20 mi away
Ranked #21 because of its Google rating and review volume: 4.9★ from 3,222 Google reviews.
Based in Huntley, 10 mi away
Ranked #22 because of its Google rating and trade focus: 4.7★ from 68 Google reviews, listed on Google as “Plumber”.
Based in Algonquin, 18 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 445 Google reviews, listed on Google as “Plumber”.
Based in Elgin, 20 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 211 Google reviews, listed on Google as “Plumber”.
Based in Rockford, 22 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 508 Google reviews, listed on Google as “Plumber”.
#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 246 ranked plumbers here; the rest are on their profiles.
20 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.
| Business | Google rating | Distance |
|---|---|---|
| Air Man Heating, Cooling & Plumbing (Air Management Services Inc) | In Marengo | |
| Apex Plumbing Pros LLC | 5.0★ (2) | 24 mi |
| Asset Maintenance Services, L.L.C. | 5.0★ (1) | 10 mi |
| Basements Etc., Inc. | 5.0★ (2) | 16 mi |
| Breakthrough Plumbing, LLC | In Marengo | |
| Bryan Lloyd Plumbing | 5.0★ (2) | 25 mi |
| Dee's Plumbing & Construction | 5.0★ (2) | 23 mi |
| Dominic's Plumbing | 3.0★ (2) | 11 mi |
| Drain 911 Plumbing and Sewer Rodding | 3.0★ (2) | 24 mi |
| HANDYMAN WE DO IT ALL INC. | 3.7★ (6) | In Marengo |
| Hartwig Plumbing & Heating | 5.0★ (1) | 11 mi |
| Hayes Home Improvements | 5.0★ (2) | 24 mi |
| JB Plumbing | 4.8★ (16) | 10 mi |
| Knobloch Plumbing, Inc. | In Marengo | |
| Next Level Plumbing | In Marengo | |
| Plumbing Systems LLC | 5.0★ (2) | 11 mi |
| Stateline Plumbing | 3.0★ (2) | 23 mi |
| T E Shouler Plumbing | 5.0★ (2) | 24 mi |
| Unclogged, LLC | 4.6★ (42) | 13 mi |
| Zenks Plumbing LLC | In Marengo |
National price ranges in USD, not adjusted for Marengo. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Water heater replacement | $882 | $1,348 | $1,826 | Per unit, installed (unit plus labor); typical range of customer-reported jobs. US national range | October 2026 |
In Illinois, Illinois Department of Public Health, Plumbing Program licenses Plumber licenses and plumbing contractor registration (Chicago licenses its own plumbers).
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
We scored 246 Marengo 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.
| Factor | Weight | Computed from | In Marengo data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |