9 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Hilo: Big Island AC Service LLC, CR Score 59/100; 4.9★ from 85 Google reviews.
Best for emergencies (open 24/7): Pacific Repairs, LLC, posts 24/7 hours; ranked #3 of 9.
Most-reviewed: Hilo Air Conditioning & Refrigeration, 24 Google reviews at 4.0★, the most of 9 ranked after Big Island AC Service LLC; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
9 Hilo HVAC contractors are ranked here by CR Score, from ten published factors. 2 are open 24/7, 2 open Saturdays and 2 open Sundays, based on posted hours. The median Google rating is 4.6★ across 9 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Big Island AC Service LLC | 59 | 4.9★ (85) | Hawaiian Paradise Park, 16 mi away | — | Overall |
| 2 | Hilo Air Conditioning & Refrigeration | 57 | 4.0★ (24) | Hilo | — | Most reviews |
| 3 | Pacific Repairs, LLC | 54 | 4.6★ (9) | Hilo | 24/7 | Emergencies |
| 4 | Hilo Mechanical Inc | 54 | 4.3★ (6) | Hilo | — | — |
| 5 | Hawaii Sheetmetal & Mechanical Inc. | 54 | 5.0★ (4) | Hilo | — | — |
| 6 | Okahara and Associates, Inc. | 53 | 4.0★ (4) | Hilo | — | — |
| 7 | R T's Plumbing Inc | 51 | 4.6★ (10) | Hilo | — | — |
| 8 | Robert's Air Conditioning Services | 49 | 4.3★ (3) | Hawaiian Paradise Park, 22 mi away | 24/7 | — |
| 9 | Will's Plumbing & Heating | 47 | 5.0★ (3) | Hawaiian Paradise Park, 9 mi away | — | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and review volume: 4.9★ from 85 Google reviews, the most in Hilo.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hilo
Ranked #2 because of its Google rating and trade focus: 4.0★ from 24 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hilo
Ranked #3 because of its Google rating and review volume: 4.6★ from 9 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hilo
Ranked #4 because of its Google rating and trade focus: 4.3★ from 6 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hilo
Ranked #5 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hilo
Ranked #6 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hilo
Ranked #7 because of its Google rating and review volume: 4.6★ from 10 Google reviews.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Hawaiian Paradise Park, 22 mi away
Ranked #8 because of its Google rating and trade focus: 4.3★ from 3 Google reviews, listed on Google as “Contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hawaiian Paradise Park, 9 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
National price ranges in USD, not adjusted for Hilo. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| AC replacement | $3,887 | $5,978 | $8,073 | Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range | October 2026 |
| Furnace replacement | $2,823 | $4,814 | $6,896 | Per system, installed; typical range of customer-reported jobs. US national range | October 2026 |
In Hawaii, Hawaii Contractors License Board (DCCA) licenses C-52 ventilating and air conditioning specialty contractor license.
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
In Hawaii, air conditioning calls peak in the hottest summer months. Spring is the easiest time to book a tune-up or replacement, before the first heat wave.
We scored 9 Hilo HVAC contractors 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 Hilo 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 |