64/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 191 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 191 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1003 S Bross St, Longmont, CO 80501
Best Plumbers in Longmont, CO (2026)
401 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Longmont: Longmont Water Heaters, CR Score 64/100; 5.0★ from 191 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): M and M Heating, Cooling, Plumbing and Electrical, posts 24/7 hours; ranked #2 of 401.
- 29
Most-reviewed: Jim Needham Heating Cooling Plumbing and Drain, 5,597 Google reviews at 4.9★, the most of 401 ranked; ranked #29.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
401 Longmont plumbers are ranked here by CR Score, from ten published factors. 179 are open 24/7, 257 open Saturdays and 214 open Sundays, based on posted hours. The median Google rating is 4.9★ across 401 rated businesses.
Top 10 plumbers in Longmont at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Longmont Water Heaters | 64 | 5.0★ (191) | Longmont | 24/7 | Overall |
| 2 | M and M Heating, Cooling, Plumbing and Electrical | 63 | 4.9★ (3,075) | Longmont | 24/7 | Emergencies |
| 3 | Kodiak Plumbing Solutions, LLC | 63 | 5.0★ (122) | Longmont | 24/7 | — |
| 4 | Welzig Heating, Air, Plumbing & Electric | 62 | 4.9★ (1,269) | Longmont | 24/7 | — |
| 5 | Benjamin Franklin Plumbing of Denver | 62 | 4.8★ (2,904) | Westminster, 18 mi away | 24/7 | — |
| 6 | Big Apple Plumbing LLC - Broomfield, CO | 61 | 5.0★ (496) | Broomfield, 16 mi away | 24/7 | — |
| 7 | Roto-Rooter Plumbing & Water Cleanup | 61 | 4.8★ (572) | Boulder, 13 mi away | 24/7 | — |
| 8 | Mountain Range Plumbing | 61 | 4.9★ (396) | Frederick, 8 mi away | Sat · Sun · Evenings | — |
| 9 | Reliable Longmont Plumbing | 61 | 5.0★ (32) | Longmont | 24/7 | — |
| 10 | MESA Plumbing, Heating and Cooling | 60 | 4.8★ (233) | Erie, 11 mi away | 24/7 | — |
The 401 best plumbers in Longmont, ranked
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.
Based in Longmont
63/100CR ScoreRanked #2 because of its Google rating and review volume: 4.9★ from 3,075 Google reviews.
- 4.9★ from 3,075 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 110 S Bowen Cir, Longmont, CO 80501
Based in Longmont
63/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 122 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 122 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 225 Price Rd #45, Longmont, CO 80504
Based in Longmont
62/100CR ScoreRanked #4 because of its Google rating and review volume: 4.9★ from 1,269 Google reviews.
- 4.9★ from 1,269 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1831 Boston Ave, Longmont, CO 80501
Based in Westminster, 18 mi away
62/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.8★ from 2,904 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 2,904 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1020 W 124th Ave #700, Westminster, CO 80234
Based in Broomfield, 16 mi away
61/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 496 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 496 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1022 Depot Hill Rd Unit 10, Broomfield, CO 80020
Based in Boulder, 13 mi away
61/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.8★ from 572 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 572 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2355 Canyon Blvd UNIT 103, Boulder, CO 80302
Based in Frederick, 8 mi away
61/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 396 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 396 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
- Address
- 5315 Coyote Dr, Frederick, CO 80504
Based in Longmont
61/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 32 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 32 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 838 E 17th Ave, Longmont, CO 80504
Based in Erie, 11 mi away
60/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.8★ from 233 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 233 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2456 S Main St UNIT A, Erie, CO 80516
Based in Longmont
60/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 26 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 26 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1148 Grant St, Longmont, CO 80501
Based in Longmont
60/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 22 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 22 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 7916 W Sussex Ct, Longmont, CO 80503
Based in Longmont
60/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 20 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Boulder, 14 mi away
60/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 190 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 190 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1434 Spruce St Suite 100, Boulder, CO 80302
Based in Cherry Creek, 1 mi away
60/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 21 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 21 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Longmont
60/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 44 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 44 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
- Address
- 1767 Vista View Dr, Longmont, CO 80504
Based in Lafayette, 11 mi away
60/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.9★ from 320 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 320 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun 9 AM–5 PM
- Address
- 305 Lucerne Dr, Lafayette, CO 80026
Based in Westminster, 22 mi away
59/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.8★ from 897 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 897 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 8872 Meade St, Westminster, CO 80031
Based in Berthoud, 13 mi away
59/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.6★ from 460 Google reviews, listed on Google as “Plumber”.
- 4.6★ from 460 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 56 Gateway Cir, Berthoud, CO 80513
Based in Loveland, 14 mi away
59/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 118 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 118 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 554 18th St SW, Loveland, CO 80537
Based in Broomfield, 18 mi away
59/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.9★ from 277 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 277 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 6343 W 120th Ave Ste 101, Broomfield, CO 80020
Based in Boulder, 14 mi away
59/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.8★ from 630 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 630 Google reviews
- Hours
- Mon–Sun 8 AM–6 PM
- Address
- 1111 Spruce St #404B, Boulder, CO 80302
Based in Berthoud, 6 mi away
59/100CR ScoreRanked #23 because of its Google rating and review volume: 4.8★ from 626 Google reviews.
- 4.8★ from 626 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 14196 Co Rd 7, Mead, CO 80542
Based in Longmont
59/100CR ScoreRanked #24 because of its Google rating and review volume: 4.8★ from 1,093 Google reviews.
- 4.8★ from 1,093 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1740 Skyway Dr UNIT H, Longmont, CO 80504
Based in Longmont
59/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.7★ from 15 Google reviews, listed on Google as “Plumber”.
- 4.7★ from 15 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
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 401 ranked plumbers here; the rest are on their profiles.
Also serving Longmont
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 |
|---|---|---|
| ABC Drain & Sewer Cleaning | 5.0★ (1) | In Longmont |
| Affordable Plumbing and Heat | 4.6★ (333) | 21 mi |
| All Pro Plumbing And Heating | In Longmont | |
| All Trade Plumbing | In Longmont | |
| B-Line Plumbing & Drains | 5.0★ (100) | 19 mi |
| Buzz Barday Plumbing | 1.0★ (1) | In Longmont |
| Carroll Mechanical Services | 4.8★ (77) | In Longmont |
| kens plumbing | 5.0★ (1) | In Longmont |
| KP Plumbing | 4.8★ (112) | 19 mi |
| Legacy Excavation LLC | 5.0★ (15) | 8 mi |
| Lucas Boilers | 5.0★ (2) | In Longmont |
| Lucas Boilers | In Longmont | |
| Miller Brothers Plumbing & HVAC | 4.8★ (73) | 16 mi |
| Newt Plumbing Heating & Air | 5.0★ (2) | 7 mi |
| Polar Bear Plumbing Heating & Air | 5.0★ (541) | 24 mi |
| Power Rooter Plumbing | 1.5★ (2) | 13 mi |
| Quester Plumbers Firestone | 5.0★ (18) | 9 mi |
| Rowe Plumbing | 2.5★ (2) | 9 mi |
| Teesco Plumbing | 5.0★ (2) | In Longmont |
| Tool Men Home Management | 5.0★ (2) | 8 mi |
How much do plumbers cost in Longmont?
National price ranges in USD, not adjusted for Longmont. 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 |
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.
- Check that the status is active and the name matches the contract or truck.
- 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 Longmont plumbers
We scored 401 Longmont 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 Longmont 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 |
Plumbers in Longmont: frequently asked questions
Who is the best plumber in Longmont?
By CR Score, the highest-ranked plumber in Longmont, CO is Longmont Water Heaters with a CR Score of 64/100. It has 5.0★ from 191 Google reviews. It is open 24/7. M and M Heating, Cooling, Plumbing and Electrical (#2) and Kodiak Plumbing Solutions, LLC (#3) follow. We ranked 401 plumbers on ten factors, last updated October 22, 2026.
How many plumbers are there in Longmont?
ContractorsRanked ranks 401 plumbers serving Longmont, CO. 17 of them are based in Longmont; 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 Longmont are open 24/7?
179 ranked plumbers in Longmont post 24/7 hours. The highest-ranked are Longmont Water Heaters (#1), M and M Heating, Cooling, Plumbing and Electrical (#2) and Kodiak Plumbing Solutions, LLC (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which plumbers in Longmont work on weekends?
257 of 401 ranked plumbers post Saturday hours and 214 post Sunday hours. The highest-ranked open Saturdays are Longmont Water Heaters (#1), M and M Heating, Cooling, Plumbing and Electrical (#2) and Kodiak Plumbing Solutions, LLC (#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 Longmont?
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 Longmont. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Longmont plumbers have?
The median Google rating among 401 rated plumbers in Longmont is 4.9★, with a median of 32 reviews. Jim Needham Heating Cooling Plumbing and Drain has the most, 5,597 reviews, and ranks #29. 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 ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Update log for Longmont
- October 2026: CR Scores recalculated for 401 plumbers serving Longmont.
- October 2026: 4 duplicate listings merged.
More plumbers and Longmont pages
Plumbers near Longmont
- Plumbers in Gunbarrel, CO494 ranked
- Plumbers in Erie, CO610 ranked
- Plumbers in Firestone, CO532 ranked
- Plumbers in Berthoud, CO320 ranked
- Plumbers in Frederick, CO550 ranked
- Plumbers in Lafayette, CO673 ranked
- Plumbers in Louisville, CO672 ranked
- Plumbers in Boulder, CO479 ranked
- Plumbers in Superior, CO686 ranked
- Plumbers in Johnstown, CO262 ranked
Other trades in Longmont
- Roofers in Longmont920 ranked
- Electricians in Longmont277 ranked
- HVAC contractors in Longmont480 ranked
- General contractors in Longmont371 ranked
- Painters in Longmont145 ranked
- Landscapers in Longmont174 ranked
- Handymen in Longmont93 ranked
- Kitchen remodelers in Longmont253 ranked
- Bathroom remodelers in Longmont249 ranked
- Flooring contractors in Longmont219 ranked
- Tile installers in Longmont48 ranked
- Drywall contractors in Longmont17 ranked
- Concrete contractors in Longmont237 ranked
- Fence contractors in Longmont124 ranked
- Deck builders in Longmont141 ranked
- Siding contractors in Longmont355 ranked
- Window installers in Longmont396 ranked
- Gutter installers in Longmont124 ranked
- Insulation contractors in Longmont66 ranked
- Solar installers in Longmont191 ranked
- Garage door repair companies in Longmont136 ranked
- Foundation repair companies in Longmont86 ranked
- Tree services in Longmont187 ranked
- Masonry contractors in Longmont87 ranked
- Water damage restoration companies in Longmont466 ranked
- Home builders in Longmont428 ranked
- Demolition contractors in Longmont39 ranked
- All contractors in Longmont