15 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Mason City: Busy Bee Drain Cleaning, CR Score 68/100; 5.0★ from 96 Google reviews; open 24/7.
Best for emergencies (open 24/7): Roto-Rooter, posts 24/7 hours; ranked #4 of 15.
Most-reviewed: Helps Drain & Septic Service, 113 Google reviews at 4.9★, the most of 15 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
15 Mason City plumbers are ranked here by CR Score, from ten published factors. 3 are open 24/7, 8 open Saturdays and 4 open Sundays, based on posted hours. The median Google rating is 4.6★ across 15 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Busy Bee Drain Cleaning | 68 | 5.0★ (96) | Mason City | 24/7 | Overall |
| 2 | A-1 Drain Cleaning | 65 | 4.9★ (72) | Mason City | Sat · Sun | — |
| 3 | America's Drain Cleaning | 63 | 5.0★ (67) | Mason City | Sat | — |
| 4 | Roto-Rooter | 62 | 4.2★ (31) | Mason City | 24/7 | Emergencies |
| 5 | Regal Plumbers | 60 | 5.0★ (14) | Mason City | Sat · Sun · Evenings | — |
| 6 | Helps Drain & Septic Service | 60 | 4.9★ (113) | Clear Lake, 9 mi away | — | Most reviews |
| 7 | Double M Plumbing & Heating | 58 | 4.6★ (11) | Mason City | Sat | — |
| 8 | Daley's Plumbing & Heating | 57 | 4.3★ (31) | Mason City | 24/7 | — |
| 9 | Clausen Plumbing & Heating | 55 | 4.0★ (47) | Mason City | Sat | — |
| 10 | Burtness-Lundgren Plumbing & Heating | 55 | 4.1★ (11) | Clear Lake, 9 mi away | — | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 5.0★ from 96 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mason City
Ranked #2 because of its Google rating and trade focus: 4.9★ from 72 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mason City
Ranked #3 because of its Google rating and trade focus: 5.0★ from 67 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mason City
Ranked #4 because of its Google rating and trade focus: 4.2★ from 31 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mason City
Ranked #5 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Clear Lake, 9 mi away
Ranked #6 because of its Google rating and review volume: 4.9★ from 113 Google reviews, the most in Mason City.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mason City
Ranked #7 because of its Google rating and trade focus: 4.6★ from 11 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mason City
Ranked #8 because of its Google rating and review volume: 4.3★ from 31 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mason City
Ranked #9 because of its Google rating and review volume: 4.0★ from 47 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Clear Lake, 9 mi away
Ranked #10 because of its Google rating and trade focus: 4.1★ from 11 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Clear Lake, 9 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Clear Lake, 9 mi away
Ranked #12 because of its Google rating and review volume: 4.5★ from 36 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mason City
Ranked #13 because of its Google rating and trade focus: 3.9★ from 18 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mason City
Ranked #14 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Clear Lake, 9 mi away
Ranked #15 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
6 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 |
|---|---|---|
| Big Mike's Custom Bath & Hvac Llc | 5.0★ (1) | 9 mi |
| Cole Plumbing & Heating | In Mason City | |
| Drain Rite | In Mason City | |
| Hank's Plumbing | 2.5★ (2) | In Mason City |
| North Iowa Water Co | 5.0★ (1) | 8 mi |
| Visu-Sewer, Inc (Iowa Office) | 5.0★ (1) | In Mason City |
National price ranges in USD, not adjusted for Mason City. 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 Iowa, Iowa Plumbing and Mechanical Systems Board (Department of Inspections, Appeals and Licensing) licenses Plumbing work: water supply, drain, waste and vent piping and fixtures.
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 15 Mason City 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 Mason City 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 |