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Best Plumbers in Royal Kunia, HI (2026)

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

The short answer

  1. 1

    Best overall in Royal Kunia: Steve’s Plumbing & A/C Service, CR Score 66/100; 4.8★ from 4,823 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): A-1 Budget Plumbing, posts 24/7 hours; ranked #2 of 57.

  3. 2

    Most-reviewed: A-1 Budget Plumbing, 2,907 Google reviews at 4.9★, the most of 57 ranked after Steve’s Plumbing & A/C Service; ranked #2.

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

57 Royal Kunia plumbers are ranked here by CR Score, from ten published factors. 23 are open 24/7, 36 open Saturdays and 30 open Sundays, based on posted hours. The median Google rating is 4.9★ across 57 rated businesses.

Most of this list also appears on the Plumbers in Waipahu ranking. See Plumbers in Waipahu

Top 10 plumbers in Royal Kunia at a glance

Top 10 plumbers in Royal Kunia at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Steve’s Plumbing & A/C Service664.8★ (4,823)Pearl City, 8 mi away24/7Overall
2A-1 Budget Plumbing654.9★ (2,907)Kaneohe, 8 mi away24/7Emergencies, Most reviews
3All Aloha Plumbing and Drain Cleaning Oahu654.8★ (1,099)Waipahu, 1 mi away24/7—
4Roto-Rooter Plumbing & Water Cleanup654.9★ (1,483)Kapolei, 7 mi away24/7—
5Roto-Rooter Plumbing & Water Cleanup644.8★ (2,138)Honolulu, 9 mi away24/7—
6Emergency Plumbing & Solar624.6★ (547)Pearl City, 3 mi away24/7—
7Oahu Jetting and Drains LLC615.0★ (157)Kapolei, 4 mi awaySat · Sun · Evenings—
8535 Plumbing LLC614.9★ (612)Honolulu, 11 mi awaySat · Sun—
9P & S Plumbing Honolulu605.0★ (120)Honolulu, 10 mi away24/7—
10Allens Plumbing604.7★ (912)Honolulu, 10 mi awaySat · Sun—

The 57 best plumbers in Royal Kunia, 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.

  8. #8 535 Plumbing LLC

    Based in Honolulu, 11 mi away

    61/100CR Score

    Ranked #8 because of its Google rating and trade focus: 4.9★ from 612 Google reviews, listed on Google as “Plumber”.

    • 4.9★ from 612 Google reviews
    Hours
    Mon–Sun 8 AM–4:30 PM
    Address
    1130 N Nimitz Hwy Suite B-180, Honolulu, HI 96817
    View profile for 535 Plumbing LLC(808) 300-0535

  10. #10 Allens Plumbing

    Based in Honolulu, 10 mi away

    60/100CR Score

    Ranked #10 because of its Google rating and trade focus: 4.7★ from 912 Google reviews, listed on Google as “Plumber”.

    • 4.7★ from 912 Google reviews
    Hours
    Mon–Fri 7 AM–6 PM · Sat–Sun 8 AM–6 PM
    Address
    401 Puuhale Rd, Honolulu, HI 96819
    View profile for Allens Plumbing(808) 599-5511

  12. #12 United Drain Techs

    Based in Kapolei, 4 mi away

    59/100CR Score

    Ranked #12 because of its Google rating and trade focus: 4.7★ from 43 Google reviews, listed on Google as “Plumber”.

    • 4.7★ from 43 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    91-1075 Polea St, Ewa Beach, HI 96706
    View profile for United Drain Techs(808) 450-8922

  13. #13 1-Tom-Plumber

    Based in Schofield Barracks, 7 mi away

    59/100CR Score

    Ranked #13 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “Plumber”.

    • 5.0★ from 29 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    321 N Cane St Unit F, Wahiawa, HI 96786
    View profile for 1-Tom-Plumber(808) 562-3956

  17. #17 Pro Pacific Plumbing

    Based in Pearl City, 5 mi away

    57/100CR Score

    Ranked #17 because of its Google rating and trade focus: 4.0★ from 9 Google reviews, listed on Google as “Plumber”.

    • 4.0★ from 9 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    95-390 Kuahelani Ave #5011, Mililani, HI 96789
    View profile for Pro Pacific Plumbing(808) 201-0511

  21. #21 360 PLUMBING

    Based in Kaneohe, 7 mi away

    56/100CR Score

    Ranked #21 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Plumber”.

    • 5.0★ from 4 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for 360 PLUMBING(808) 501-7447

  22. #22 Furuta Plumbing

    Based in Kapolei, 5 mi away

    56/100CR Score

    Ranked #22 because of its Google rating and trade focus: 3.4★ from 33 Google reviews, listed on Google as “Plumber”.

    • 3.4★ from 33 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    98-023 Hekaha St #11, Aiea, HI 96701
    View profile for Furuta Plumbing(808) 546-0940

  23. #23 CJ Plumbing

    Based in Waipahu, 1 mi away

    55/100CR Score

    Ranked #23 because of its Google rating and trade focus: 4.9★ from 44 Google reviews, listed on Google as “Plumber”.

    • 4.9★ from 44 Google reviews
    Hours
    Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
    Address
    94-150 Leoleo St #122, Waipahu, HI 96797
    View profile for CJ Plumbing(808) 226-1887

Plumbers ranked #26 to #34

#1 to #25 are shown in full above. Here are #26 to #34, in CR Score order; each links to its profile. We publish the top 34 of 57 ranked plumbers here; the rest are on their profiles.

plumbers in Royal Kunia, ranks 26 to 34
RankBusinessCR ScoreGoogle ratingDistance
26Emergency Drain Cleaning & Plumbing SVCS, LLC545.0★ (12)19 mi
28Blue Star Plumbing, LLC544.0★ (4)11 mi
29Hirayama Plumbing & Repair Services544.6★ (8)4 mi
30Alpha Plumbing Services545.0★ (4)1 mi
32Kaneohe Plumbing Services533.7★ (3)13 mi
34Gordon Mechanical Llc533.9★ (7)5 mi

How much do plumbers cost in Royal Kunia?

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

How much do plumbers cost in Royal Kunia?
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 Hawaii

In Hawaii, Hawaii Contractors License Board (DCCA) licenses C-37 plumbing specialty contractor license (plumbers are licensed by the Board of Electricians and Plumbers).

  1. Search the business name or license number on the Hawaii Contractors License Board (DCCA) license lookup.
  2. Check that the status is active and the name matches the contract or truck.
  3. 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 Royal Kunia plumbers

We scored 57 Royal Kunia 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.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Royal Kunia data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Credentials15%Active state license, bond and workers’ comp on fileNot yet collected
Review volume10%Number of Google reviews, compared with the most-reviewed business on the listMeasured
Recency5%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%How clearly the business does this trade (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)Measured
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodicallyMeasured
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there areMeasured

Plumbers in Royal Kunia: frequently asked questions

Who is the best plumber in Royal Kunia?

By CR Score, the highest-ranked plumber in Royal Kunia, HI is Steve’s Plumbing & A/C Service with a CR Score of 66/100. It has 4.8★ from 4,823 Google reviews. It is open 24/7. A-1 Budget Plumbing (#2) and All Aloha Plumbing and Drain Cleaning Oahu (#3) follow. We ranked 57 plumbers on ten factors, last updated October 22, 2026.

Which plumbers in Royal Kunia are open 24/7?

23 ranked plumbers in Royal Kunia post 24/7 hours. The highest-ranked are Steve’s Plumbing & A/C Service (#1), A-1 Budget Plumbing (#2) and All Aloha Plumbing and Drain Cleaning Oahu (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which plumbers in Royal Kunia work on weekends?

36 of 57 ranked plumbers post Saturday hours and 30 post Sunday hours. The highest-ranked open Saturdays are Steve’s Plumbing & A/C Service (#1), A-1 Budget Plumbing (#2) and All Aloha Plumbing and Drain Cleaning Oahu (#3). Posted hours are office hours; crews may book weekend jobs separately.

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

In Hawaii, Hawaii Contractors License Board (DCCA) handles licensing and covers C-37 plumbing specialty contractor license (plumbers are licensed by the Board of Electricians and Plumbers). Search the business or license number at https://mypvl.dcca.hawaii.gov/public-license-search/.

How much does water heater replacement cost in Royal Kunia?

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

What Google rating do Royal Kunia plumbers have?

The median Google rating among 57 rated plumbers in Royal Kunia is 4.9★, with a median of 10 reviews. Steve’s Plumbing & A/C Service has the most, 4,823 reviews, and ranks #1. 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.

Do plumbers outside Royal Kunia count in this ranking?

Yes, if they are within 25 mi of the Royal Kunia city center, our service radius for plumbers. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.

Update log for Royal Kunia

  1. October 2026: CR Scores recalculated for 57 plumbers serving Royal Kunia.

More plumbers and Royal Kunia pages

Other trades in Royal Kunia