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ContractorsRanked

Best Plumbers in Harvard, IL (2026)

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

The short answer

  1. 1

    Best overall in Harvard: ASAP Plumbing, CR Score 90/100; 4.9★ from 395 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Roto-Rooter Plumbing, Drain, & Water Damage Cleanup Service, posts 24/7 hours; ranked #2 of 168.

  3. 5

    Most-reviewed: Black Diamond Plumbing & Mechanical Inc., 6,580 Google reviews at 4.9★, the most of 168 ranked; ranked #5.

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

168 Harvard plumbers are ranked here by CR Score, from 8 published factors. 70 are open 24/7, 99 open Saturdays and 76 open Sundays, based on posted hours. The median Google rating is 4.8★ across 168 rated businesses.

Top 10 plumbers in Harvard at a glance

Top 10 plumbers in Harvard at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1ASAP Plumbing904.9★ (395)Woodstock, 8 mi away24/7Overall
2Roto-Rooter Plumbing, Drain, & Water Damage Cleanup Service884.8★ (4,676)Rockford, 25 mi away24/7Emergencies
3Roto-Rooter Plumbing & Water Cleanup884.9★ (1,119)Crystal Lake, 20 mi away24/7—
4Tidy Tank Plumbing, Sewer, and Septic884.9★ (1,127)Crystal Lake, 22 mi away24/7—
5Black Diamond Plumbing & Mechanical Inc.884.9★ (6,580)McHenry, 18 mi away24/7Most reviews
6Ex-Stink Plumbing & Sewer874.9★ (639)Fox Lake, 23 mi away24/7—
71-Tom-Plumber864.9★ (368)Lake in the Hills, 22 mi away24/7—
8Hansen Heating, Plumbing & Air864.9★ (244)Huntley, 21 mi away24/7—
9A.C.T. Plumbing & Property Management, Inc.865.0★ (171)Hampshire, 22 mi away24/7—
10Huntley Plumbing865.0★ (158)Crystal Lake, 21 mi away24/7—

The 168 best plumbers in Harvard, 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.

  1. Ranked #1 in Harvard

    #1 ASAP Plumbing

    Based in Woodstock, 8 mi away

    90/100CR Score

    Ranked #1 because of its Google rating and availability: 4.9★ from 395 Google reviews, open 24/7.

    • 4.9★ from 395 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1258 N Rose Farm Rd Unit 1, Woodstock, IL 60098
    View profile for ASAP Plumbing(815) 201-2940

  7. #7 1-Tom-Plumber

    Based in Lake in the Hills, 22 mi away

    86/100CR Score

    Ranked #7 because of its Google rating and availability: 4.9★ from 368 Google reviews, open 24/7.

    • 4.9★ from 368 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    9200 Pyott Rd, Lake in the Hills, IL 60156
    View profile for 1-Tom-Plumber(815) 900-2223

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 168 ranked plumbers here; the rest are on their profiles.

plumbers in Harvard, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Family Rooter Plumbing and Sewer IL844.8★ (140)22 mi
27Charlie O's Plumbing845.0★ (508)23 mi
28815 Septic Guy845.0★ (62)23 mi
29G3 Plumbing844.9★ (66)21 mi
30Cork's Plumbing, Heating, & Cooling834.7★ (68)19 mi
31Allegiance Service Group, Inc835.0★ (29)21 mi
32Edelman Heating, Cooling, Plumbing, Electric & Solar834.8★ (396)17 mi
33Allegiance Service Group, Inc.835.0★ (49)25 mi
34Thielmann Heating, Cooling & Plumbing835.0★ (458)25 mi
35Four Seasons Heating, Air Conditioning, Plumbing, & Electric824.8★ (460)20 mi
36MAC PLUMBING LLC825.0★ (10)16 mi
37First Response Plumbing815.0★ (26)25 mi
38Ludwig Family Plumbing814.6★ (68)24 mi
39Kelsey Mechanical814.8★ (23)23 mi
40Rogue Plumbing Corporation814.2★ (5)13 mi
41Turner Plumbing815.0★ (115)24 mi
42Master Services Inc.814.7★ (976)15 mi
43Amettis Plumbing Sewer & Water815.0★ (6)12 mi
44Lungo's Plumbing Services814.6★ (27)23 mi
45Pointer Plumbing & Sewer815.0★ (10)22 mi
46Rellaire Smart Home Systems804.9★ (472)21 mi
47TOPTEC Heating, Cooling, Plumbing, & Electrical, Inc.805.0★ (5)19 mi
48WeatherWise Heating & AC repair804.8★ (744)20 mi
49Ed's Drain Services804.6★ (57)22 mi
50HOP Hands On Professional805.0★ (18)22 mi

Also serving Harvard

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 Harvard
BusinessGoogle ratingDistance
5 Start Plumbing Heating & Cooling3.0★ (2)25 mi
Althoff Home Services4.8★ (1,043)22 mi
Apex Plumbing Pros LLC5.0★ (2)21 mi
Asset Maintenance Services, L.L.C.5.0★ (1)In Harvard
Dee's Plumbing & Construction5.0★ (2)22 mi
Derek's Plumbing & Hydronic5.0★ (1)18 mi
Dominic's Plumbing3.0★ (2)16 mi
H W Plumbing & Mechanical5.0★ (1)18 mi
Hartwig Plumbing & Heating5.0★ (1)In Harvard
JB Plumbing4.8★ (16)13 mi
Lorjan Electric & Home Improvements5.0★ (1)16 mi
Mark Goebel Enterprises Inc5.0★ (1)19 mi
Plumbing Systems LLC5.0★ (2)21 mi
Ralph Gunderson Plumbing, Inc.4.0★ (12)14 mi
Rise Plumbing5.0★ (1)18 mi
Rodgers Excavating & Grading LLC5.0★ (2)16 mi
Son Rise Drain Cleaning4.0★ (1)14 mi
Stateline Plumbing3.0★ (2)22 mi
T E Shouler Plumbing5.0★ (2)25 mi
Vander Vennet-Plumbing Services4.0★ (1)21 mi

How much do plumbers cost in Harvard?

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

How much do plumbers cost in Harvard?
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 Illinois

In Illinois, Illinois Department of Public Health, Plumbing Program licenses Plumber licenses and plumbing contractor registration (Chicago licenses its own plumbers).

  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 Harvard plumbers

We scored 168 Harvard 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 Harvard 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 Harvard: frequently asked questions

Who is the best plumber in Harvard?

By CR Score, the highest-ranked plumber in Harvard, IL is ASAP Plumbing with a CR Score of 90/100. It has 4.9★ from 395 Google reviews. It is open 24/7. Roto-Rooter Plumbing, Drain, & Water Damage Cleanup Service (#2) and Roto-Rooter Plumbing & Water Cleanup (#3) follow. We ranked 168 plumbers on 8 factors, last updated October 22, 2026.

How many plumbers are there in Harvard?

ContractorsRanked ranks 168 plumbers serving Harvard, IL. 1 of them is based in Harvard; 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 Harvard are open 24/7?

70 ranked plumbers in Harvard post 24/7 hours. The highest-ranked are ASAP Plumbing (#1), Roto-Rooter Plumbing, Drain, & Water Damage Cleanup Service (#2) and Roto-Rooter Plumbing & Water Cleanup (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which plumbers in Harvard work on weekends?

99 of 168 ranked plumbers post Saturday hours and 76 post Sunday hours. The highest-ranked open Saturdays are ASAP Plumbing (#1), Roto-Rooter Plumbing, Drain, & Water Damage Cleanup Service (#2) and Roto-Rooter Plumbing & Water Cleanup (#3). Posted hours are office hours; crews may book weekend jobs separately.

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

In Illinois, Illinois Department of Public Health, Plumbing Program handles licensing and covers Plumber licenses and plumbing contractor registration (Chicago licenses its own plumbers).

How much does water heater replacement cost in Harvard?

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 Harvard. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Harvard plumbers have?

The median Google rating among 168 rated plumbers in Harvard is 4.8★, with a median of 28 reviews. Black Diamond Plumbing & Mechanical Inc. has the most, 6,580 reviews, and ranks #5. 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 Harvard

  1. October 2026: CR Scores recalculated for 168 plumbers serving Harvard.

More plumbers and Harvard pages

Other trades in Harvard