11 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Marshalltown: Warnick Mechanical, CR Score 85/100; 4.4★ from 69 Google reviews; open 24/7.
Best for emergencies (open 24/7): Brooker Plumbing & Heating, posts 24/7 hours; ranked #2 of 11.
Most-reviewed: German Plumbing Heating & Cooling, Inc., 51 Google reviews at 4.7★, the most of 11 ranked after Warnick Mechanical; ranked #10.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
11 Marshalltown plumbers are ranked here by CR Score, from 8 published factors. 3 are open 24/7, 4 open Saturdays and 3 open Sundays, based on posted hours. The median Google rating is 4.1★ across 11 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Warnick Mechanical | 85 | 4.4★ (69) | Newton, 24 mi away | 24/7 | Overall |
| 2 | Brooker Plumbing & Heating | 78 | 4.1★ (48) | Newton, 24 mi away | 24/7 | Emergencies |
| 3 | Brookwood Inc. | 77 | 4.4★ (45) | Newton, 24 mi away | 24/7 | — |
| 4 | Tuttle Plumbing & Heating Inc | 76 | 4.0★ (4) | Marshalltown | — | — |
| 5 | Frederick Quality Plumbing | 76 | 2.6★ (5) | Marshalltown | — | — |
| 6 | Ritter Plumbing | 75 | 3.9★ (17) | Marshalltown | — | — |
| 7 | Hartwig Plumbing & Heating | 75 | 4.5★ (17) | Marshalltown | — | — |
| 8 | Mayer Plumbing Repair | 74 | 3.0★ (6) | Marshalltown | Sat | — |
| 9 | AB Plumbing, LLC | 72 | 5.0★ (4) | Marshalltown | — | — |
| 10 | German Plumbing Heating & Cooling, Inc. | 70 | 4.7★ (51) | Grinnell, 23 mi away | — | Most reviews |
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 review volume: 4.4★ from 69 Google reviews, the most Google reviews on this list (69).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Newton, 24 mi away
Ranked #2 because of its Google rating and availability: 4.1★ from 48 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Newton, 24 mi away
Ranked #3 because of its Google rating and availability: 4.4★ from 45 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Marshalltown
Ranked #4 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “Plumber”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Marshalltown
Ranked #5 because of its Google rating and trade focus: 2.6★ from 5 Google reviews, listed on Google as “Plumber”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Marshalltown
Ranked #6 because of its Google rating and trade focus: 3.9★ from 17 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Marshalltown
Ranked #7 because of its Google rating and trade focus: 4.5★ from 17 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Marshalltown
Ranked #8 because of its Google rating and trade focus: 3.0★ from 6 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Marshalltown
Ranked #9 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 Grinnell, 23 mi away
Ranked #10 because of its Google rating and review volume: 4.7★ from 51 Google reviews, 51 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Newton, 25 mi away
Ranked #11 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “Construction company”.
Based on 6 of 8 factors; credentials and recency not yet collected.
10 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 |
|---|---|---|
| B & G HVAC | 4.3★ (38) | In Marshalltown |
| Cooley Pumping | In Marshalltown | |
| Don Harvey Plumbing & Heating | In Marshalltown | |
| Frederick Quality Plumbing | In Marshalltown | |
| Klootwyk Plumbing & Air Conditioning | 1.5★ (2) | In Marshalltown |
| Manfull Construction & Property Services,LLC | 25 mi | |
| Ray Mcneece Plumbing | 3.5★ (2) | In Marshalltown |
| Smith Faucet & Toilet Repair | 1.0★ (1) | In Marshalltown |
| Walls Plumbing & Handyman Services | 5.0★ (1) | 25 mi |
| Wonders Plumbing Inc | 5.0★ (1) | 24 mi |
National price ranges in USD, not adjusted for Marshalltown. 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 11 Marshalltown 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 Marshalltown 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 |