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ContractorsRanked

Best Plumbers in Thornton, CO (2026)

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

The short answer

  1. 1

    Best overall in Thornton: Benjamin Franklin Plumbing of Denver, CR Score 92/100; 4.8★ from 2,904 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): AAA Service Plumbing, Heating & Electric, posts 24/7 hours; ranked #2 of 862.

  3. 10

    Most-reviewed: Applewood Plumbing Heating & Electric, 16,555 Google reviews at 4.8★, the most of 862 ranked; ranked #10.

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

862 Thornton plumbers are ranked here by CR Score, from 8 published factors. 423 are open 24/7, 625 open Saturdays and 513 open Sundays, based on posted hours. The median Google rating is 4.9★ across 862 rated businesses.

Top 10 plumbers in Thornton at a glance

Top 10 plumbers in Thornton at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Benjamin Franklin Plumbing of Denver924.8★ (2,904)Westminster, 4 mi away24/7Overall
2AAA Service Plumbing, Heating & Electric914.8★ (12,904)Golden, 14 mi away24/7Emergencies
3A Better Plumber (an Absolute Plumbing Company)914.8★ (3,296)Denver, 8 mi away24/7—
4Blue Sky Plumbing, Heating, Cooling & Electric914.8★ (4,249)Wheat Ridge, 9 mi away24/7—
5Mighty Plumbing Heating Air and Electric LLC.914.8★ (3,902)Denver, 9 mi away24/7—
6Jim Needham Heating Cooling Plumbing and Drain914.9★ (5,597)Thornton24/7—
7Big Apple Plumbing LLC - Westminster, CO914.8★ (897)Westminster, 3 mi away24/7—
8Big Apple Plumbing LLC - Broomfield, CO905.0★ (496)Broomfield, 8 mi away24/7—
9Roto-Rooter Plumbing & Water Cleanup904.8★ (1,492)Arvada, 8 mi away24/7—
10Applewood Plumbing Heating & Electric904.8★ (16,555)Denver, 9 mi awaySat · Sun · EveningsMost reviews

The 862 best plumbers in Thornton, ranked

Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.

Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  24. #24 Cap Hill Plumbing

    Based in Denver, 9 mi away

    88/100CR Score

    Ranked #24 because of its Google rating and availability: 5.0★ from 149 Google reviews, open 24/7.

    • 5.0★ from 149 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1770 E Colfax Ave unit A, Denver, CO 80218
    View profile for Cap Hill Plumbing(720) 688-3238

Plumbers ranked #26 to #50

#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 862 ranked plumbers here; the rest are on their profiles.

plumbers in Thornton, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Drain Terrier Plumbing884.8★ (363)9 mi
27Roto-Rooter Plumbing & Water Cleanup884.8★ (1,053)14 mi
28Affordable Plumbing and Heat884.6★ (333)3 mi
29SUPERIOR MILE HIGH PLUMBING885.0★ (122)8 mi
30Swan Plumbing, Heating & Air of Denver884.8★ (3,443)6 mi
31Anywhere Rooter884.6★ (2,112)12 mi
32Golden West Plumbing, Heating, Air Conditioning, and Electrical884.8★ (3,635)7 mi
33Hot Water Now!884.7★ (288)5 mi
34Plumbline Services884.9★ (1,917)7 mi
35Speed plumbing885.0★ (160)11 mi
36Top Shelf Electric, Heating, & Plumbing884.9★ (1,211)19 mi
37Garvin's Plumbing and Sewer884.8★ (815)14 mi
38Go Direct Services874.7★ (248)6 mi
39My Buddy the Plumber874.6★ (352)4 mi
40King Rooter & Plumbing874.9★ (189)11 mi
41King Rooter & Plumbing | Plumbers Denver, CO | Drain Cleaning | Sewer & Water Line | Tankless Water Heater Repair874.7★ (479)10 mi
42Amazing Plumbing Solutions LLC874.6★ (80)In Thornton
43bluefrog Plumbing and Drain of Denver875.0★ (468)20 mi
4424/7 Thornton Plumbers875.0★ (21)In Thornton
45Flow Rite Plumbing and Drain Cleaning875.0★ (59)7 mi
46Jameson Brothers Plumbing874.8★ (61)4 mi
47Time Plumbing, Heating & Electric Denver874.6★ (776)10 mi
48Zoom Drain874.9★ (243)14 mi
49Garvin's Plumbing and Sewer874.9★ (66)6 mi
50MESA Plumbing, Heating and Cooling874.8★ (233)11 mi

Also serving Thornton

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.

Unranked plumbers serving Thornton
BusinessGoogle ratingDistance
Afford-A-Rooter Plumbing - Westminster5.0★ (2)9 mi
AJ Plumbing LLC5.0★ (2)5 mi
B-Line Plumbing & Drains5.0★ (100)3 mi
Certified Plumbing5.0★ (2)11 mi
Colorado Drain Systems Inc.5.0★ (2)3 mi
Drain-X Colorado5.0★ (2)10 mi
Just In Time Electrical & Plumbing4.9★ (1,027)In Thornton
Lakewood Plumbing4.6★ (490)10 mi
Now Emergency Plumbing Denver5.0★ (2)10 mi
Nuflush5.0★ (2)8 mi
PHI Plumbing Inc.In Thornton
Plumbing Connect Systems LLC5.0★ (50)In Thornton
Precision Plumbing Company3.0★ (2)2 mi
Preferred Maintenance Co, LLC5.0★ (2)10 mi
Q & A PlumbingIn Thornton
Rooter & Drain Services LLC.5.0★ (2)7 mi
Roto-Rooter Plumbing & Water Cleanup4.7★ (1,724)18 mi
Sewer Experts Denver Sewer Line Repair & Replacement, Drain Scope, Water Lines4.8★ (160)7 mi
Sewer Inspections Colorado3.0★ (2)In Thornton
The unclogger surgeon5.0★ (2)10 mi

How much do plumbers cost in Thornton?

National price ranges in USD, not adjusted for Thornton. Each row names its basis and the month we checked it.

How much do plumbers cost in Thornton?
JobLowTypicalHighBasisChecked
Water heater replacement$882$1,348$1,826Per unit, installed (unit plus labor); typical range of customer-reported jobs. US national rangeOctober 2026

How to check a plumber's license in Colorado

In Colorado, Colorado State Plumbing Board (DORA) licenses Plumbing work: water supply, drain, waste and vent piping and fixtures.

  1. Check that the status is active and the name matches the contract or truck.
  2. Ask for proof of insurance before work starts.

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

How we ranked Thornton plumbers

We scored 862 Thornton 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.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Thornton data
Reputation35%Bayesian-adjusted Google star ratingMeasured
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2Not yet collected
Review volume10%log10(reviews + 1) against the list maximumMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability10%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5Measured
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radiusMeasured
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)Measured

Plumbers in Thornton: frequently asked questions

Who is the best plumber in Thornton?

By CR Score, the highest-ranked plumber in Thornton, CO is Benjamin Franklin Plumbing of Denver with a CR Score of 92/100. It has 4.8★ from 2,904 Google reviews. It is open 24/7. AAA Service Plumbing, Heating & Electric (#2) and A Better Plumber (an Absolute Plumbing Company) (#3) follow. We ranked 862 plumbers on 8 factors, last updated October 22, 2026.

How many plumbers are there in Thornton?

ContractorsRanked ranks 862 plumbers serving Thornton, CO. 5 of them are based in Thornton; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.

Which plumbers in Thornton are open 24/7?

423 ranked plumbers in Thornton post 24/7 hours. The highest-ranked are Benjamin Franklin Plumbing of Denver (#1), AAA Service Plumbing, Heating & Electric (#2) and A Better Plumber (an Absolute Plumbing Company) (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which plumbers in Thornton work on weekends?

625 of 862 ranked plumbers post Saturday hours and 513 post Sunday hours. The highest-ranked open Saturdays are Benjamin Franklin Plumbing of Denver (#1), AAA Service Plumbing, Heating & Electric (#2) and A Better Plumber (an Absolute Plumbing Company) (#3). Posted hours are office hours; crews may book weekend jobs separately.

How do I check a plumber's license in Colorado?

In Colorado, Colorado State Plumbing Board (DORA) handles licensing and covers Plumbing work: water supply, drain, waste and vent piping and fixtures.

How much does water heater replacement cost in Thornton?

Water heater replacement typically costs $882 to $1,826, with $1,348 typical (Per unit, installed (unit plus labor); typical range of customer-reported jobs. US national range). This is a national range, not adjusted for Thornton. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Thornton plumbers have?

The median Google rating among 862 rated plumbers in Thornton is 4.9★, with a median of 31 reviews. Applewood Plumbing Heating & Electric has the most, 16,555 reviews, and ranks #10. We adjust ratings for review count, so a few five-star reviews cannot top the list.

How does ContractorsRanked rank plumbers?

Each plumber gets a 0–100 CR Score from 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.

Update log for Thornton

  1. October 2026: CR Scores recalculated for 862 plumbers serving Thornton.
  2. October 2026: 6 duplicate listings merged.

More plumbers and Thornton pages

Other trades in Thornton