ServiceAgent
HVAC·7 min read
Headshot of Sarah Mitchell
Written by Sarah Mitchell
Headshot of Marcus Chen
Reviewed by Marcus Chen, HVAC Industry Expert

Last updated June 12, 2026

HVAC in Hawaii: 15 Top Pros Ranked (2026)

15 verified hvac businesses in Hawaii, ranked by ServiceAgent Score across 2 cities. Real reviews, transparent methodology, no pay-to-rank.

✓ MethodologyEditorial teamFree directory, no pay-to-rank
Hawaii · HVAC
Hawaii · HVAC
ServiceAgent · Directory

TL;DR

  • 15 verified hvac businesses cataloged across 2 cities in Hawaii.
  • Top pick: Air Masters Inc (Honolulu) with ServiceAgent Score 8.5/10.
  • 1 elite-tier providers (ServiceAgent Score ≥ 8.5/10) in Hawaii.
  • Typical hvac project cost: $150 - $4,200 - $385 median for a single-system repair, $7,400 median for a full residential replacement.
  • 0 hvac providers offer 24/7 or emergency service across Hawaii.
  • For a tighter list, drill into your city below - we have a city-by-city ranking for each metro.

Why trust this list

Finding a trustworthy hvac pro in Hawaii is harder than it should be - reviews are gamed, marketing claims are loud, and licensed-and-insured isn't visible from a Google search.

We've cataloged every active hvac provider in Hawaii (15 total across 2 cities) and ranked them by composite ServiceAgent Score - a weighted blend of Trust (data quality + verification + review-volume credibility) and Recommendation (rating + review volume, Bayesian-shrunk).

Below: the top 25 hvac providers in Hawaii, transparent methodology, cost benchmarks for the trade, and the red flags worth walking away from. Drill into your city in the related pages section for a tighter local ranking.

At-a-glance: top 11 hvac pros in Hawaii

Compare the top picks side-by-side. Full reviews of each below.

#ProviderSA Score
#1Air Masters Inc8.5
#2Steve’s Plumbing & A/C Service8.4
#3Air Source Air Conditioning8.3
#4AC CLEANING HAWAII8.0
#5Cosco Air Conditioning & Refrigeration7.9
#6Island Comfort7.8
#7KW Air Conditioning LLC7.6
#8Purair Hawaii7.6
#9Johnstone Supply7.6
#10A/C Warehouse7.6
#11Advanced A/C Contracting7.5

SA Score = ServiceAgent composite (0–10). Tap a row number to jump to the full review.

How we chose these

We rank every active provider in every active hvac business in Hawaii by a composite ServiceAgent Score (0-10) made up of two components:

Trust Score (40%) - rewards owner-verified status, completeness of contact info, presence of hours/coordinates/photos, and review-volume credibility.

Recommendation Score (60%) - Google rating Bayesian-shrunk toward the category mean using a 25-review prior so high-volume providers can't be dethroned by 5-star outliers.

Composite ServiceAgent Score = 0.6 × Recommendation + 0.4 × Trust. We re-compute as new reviews land and as providers claim their listings. The "Last updated" date at the top of this page reflects the most recent data refresh.

What we deliberately don't do: pay-to-rank, sponsored slots that masquerade as editorial picks, or hide our formula. Sponsored slots (if/when introduced) will be clearly labeled and won't affect editorial ranking.

Full formula on the methodology page.

15 Best HVAC Companies Ranked

Ranked by composite ServiceAgent Score. 15 verified businesses match.

Sort by:
1

Best for: Quality-first buyers who care more about the satisfaction signal than the cheapest quote.

LocationHonolulu, HI · 1721 Republican St, Honolulu, HI 96819
EstablishedEstablished (high review volume)
SpecializationHVAC
Rating4.9 across 308 Google reviews
StatusUnclaimed listing (Google data)
🛡 6.59.8
ServiceAgent Score 8.5/10 · high confidence

The approach

Air Masters Inc maintains a strong 4.9-star reputation across 308 reviews in Honolulu, suggesting consistent execution rather than a one-off lucky streak.

  • Maintains an active website with service detail.
  • Direct phone published - no lead form gatekeeping.
  • Active on Google with up-to-date contact info.

✓ Strong review signal

4.9-star average across 308 reviews is in the top 5% of providers in Honolulu - unusually high satisfaction signal at this volume.

⚠ Watch out for

After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.

Our take

Our top pick. The composite score (8.5/10) reflects a rare combination of review depth, rating, and data completeness. Hard to argue with the data.

24/7 emergencyNot advertised
Free estimateNot advertised
Licensed + insuredNot advertised - verify before hiring
Phone(808) 848-2473
Websiteairmastershawaii.com
2

Best for: Homeowners who want a high-volume operator with a long, consistent track record.

LocationAiea, HI · 99-1265 Halawa Valley St, Aiea, HI 96701
EstablishedEstablished (very high review volume)
SpecializationHVAC
Rating4.8 across 4,881 Google reviews
StatusUnclaimed listing (Google data)
🛡 6.59.6
ServiceAgent Score 8.4/10 · high confidence

The approach

Steve’s Plumbing & A/C Service has built a high-volume operation in Aiea, with 4,881 Google reviews averaging 4.8 stars. That kind of review velocity in a single market typically means a fleet-style operation with multiple crews and a predictable response window.

  • Maintains an active website with service detail.
  • Direct phone published - no lead form gatekeeping.
  • Active on Google with up-to-date contact info.

✓ Strong review signal

4.8-star average across 4,881 reviews points to consistent on-time delivery and clear communication.

⚠ Watch out for

After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.

Our take

A solid top-3 pick. Worth getting a quote from alongside #1 to compare response times and pricing on your specific job.

24/7 emergencyNot advertised
Free estimateNot advertised
Licensed + insuredNot advertised - verify before hiring
Phone(808) 774-3038
Websitewww.stevesplumbinghawaii.com/oahu/?utm_source=google-gbp&utm_medium=organic&utm_campaign=*195*steves-plumbing-pearl-city
3

Best for: Customers prioritizing top-end satisfaction scores in Honolulu.

LocationHonolulu, HI · 2007 Republican St, Honolulu, HI 96819
EstablishedOperating multiple years (moderate review history)
SpecializationHVAC
Rating4.9 across 126 Google reviews
StatusUnclaimed listing (Google data)
🛡 6.09.8
ServiceAgent Score 8.3/10 · high confidence

The approach

Air Source Air Conditioning maintains a strong 4.9-star reputation across 126 reviews in Honolulu, suggesting consistent execution rather than a one-off lucky streak.

  • Maintains an active website with service detail.
  • Direct phone published - no lead form gatekeeping.
  • Active on Google with up-to-date contact info.

✓ Strong review signal

4.9-star average across 126 reviews is in the top 5% of providers in Honolulu - unusually high satisfaction signal at this volume.

⚠ Watch out for

After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.

Our take

A solid top-3 pick. Worth getting a quote from alongside #1 to compare response times and pricing on your specific job.

24/7 emergencyNot advertised
Free estimateNot advertised
Licensed + insuredNot advertised - verify before hiring
Phone(808) 300-4651
Websitewww.airsourceac.com
4

Best for: Customers prioritizing top-end satisfaction scores in Honolulu.

LocationHonolulu, HI · 4348 Waialae Ave #635, Honolulu, HI 96816
EstablishedSome operating history (limited review volume)
SpecializationHVAC
Rating4.9 across 28 Google reviews
StatusUnclaimed listing (Google data)
🛡 5.59.7
ServiceAgent Score 8.0/10 · med confidence

The approach

AC CLEANING HAWAII operates in Honolulu with 28 Google reviews at 4.9 stars - a steady mid-tier signal in our composite scoring.

  • Maintains an active website with service detail.
  • Direct phone published - no lead form gatekeeping.
  • Active on Google with up-to-date contact info.

✓ Strong review signal

4.9-star average across 28 reviews puts them in the upper tier for hvac providers in Honolulu.

⚠ Watch out for

After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.

Our take

Ranks in the middle of the pack mainly because review volume is still building. The rating itself is strong; treat them as a "worth a quote" rather than a default pick.

24/7 emergencyNot advertised
Free estimateNot advertised
Licensed + insuredNot advertised - verify before hiring
Phone(808) 216-6070
Websitewww.accleaninghawaii.com
5

Best for: Mid-tier hvac jobs where price and quality both matter.

LocationHonolulu, HI · 2312 Kamehameha Hwy, Honolulu, HI 96819
EstablishedSome operating history (limited review volume)
SpecializationHVAC
Rating4.7 across 33 Google reviews
StatusUnclaimed listing (Google data)
🛡 5.59.5
ServiceAgent Score 7.9/10 · med confidence

The approach

Cosco Air Conditioning & Refrigeration operates in Honolulu with 33 Google reviews at 4.7 stars - a steady mid-tier signal in our composite scoring.

  • Maintains an active website with service detail.
  • Direct phone published - no lead form gatekeeping.
  • Active on Google with up-to-date contact info.

✓ Strong review signal

4.7-star average across 33 reviews puts them in the upper tier for hvac providers in Honolulu.

⚠ Watch out for

After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.

Our take

Ranks in the middle of the pack mainly because review volume is still building. The rating itself is strong; treat them as a "worth a quote" rather than a default pick.

24/7 emergencyNot advertised
Free estimateNot advertised
Licensed + insuredNot advertised - verify before hiring
Phone(808) 845-2234
Websitewww.coscohawaii.com
6

Best for: Mid-tier hvac jobs where price and quality both matter.

LocationAiea, HI · 99-900 Iwaena St, Aiea, HI 96701
EstablishedOperating multiple years (moderate review history)
SpecializationHVAC
Rating4.4 across 94 Google reviews
StatusUnclaimed listing (Google data)
🛡 6.09.0
ServiceAgent Score 7.8/10 · high confidence

The approach

Island Comfort operates in Aiea with 94 Google reviews at 4.4 stars - a steady mid-tier signal in our composite scoring.

  • Maintains an active website with service detail.
  • Direct phone published - no lead form gatekeeping.
  • Active on Google with up-to-date contact info.

✓ Strong review signal

Public review history is limited so far - the headline rating is 4.4 from 94 reviews. Treat the score as provisional.

⚠ Watch out for

After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.

Our take

Mid-tier ranking in this market. Quality looks reasonable but isn't a standout vs. the top 3 - use them if you can't get a quote from a higher-ranked provider in time.

24/7 emergencyNot advertised
Free estimateNot advertised
Licensed + insuredNot advertised - verify before hiring
Phone(808) 797-2990
Websiteislandcomfort.com
7

Best for: Buyers willing to try a newer entrant with strong early reviews.

LocationHonolulu, HI · 1430 Kealia Dr, Honolulu, HI 96817
EstablishedLimited public history - newer or low-engagement listing
SpecializationHVAC
Rating5.0 across 1 Google reviews
StatusUnclaimed listing (Google data)
🛡 4.59.7
ServiceAgent Score 7.6/10 · low confidence

The approach

KW Air Conditioning LLC is a smaller or newer entrant in Honolulu with 1 public reviews so far. The smaller sample makes the 5.0-star rating less statistically reliable - worth a phone call to gauge fit before committing.

  • Maintains an active website with service detail.
  • Direct phone published - no lead form gatekeeping.
  • Active on Google with up-to-date contact info.

✓ Strong review signal

5.0-star average across 1 reviews puts them in the upper tier for hvac providers in Honolulu.

⚠ Watch out for

Low review volume makes the rating statistically noisy. Get references from 2-3 recent jobs before signing.

Our take

Ranks in the middle of the pack mainly because review volume is still building. The rating itself is strong; treat them as a "worth a quote" rather than a default pick.

24/7 emergencyNot advertised
Free estimateNot advertised
Licensed + insuredNot advertised - verify before hiring
Phone(808) 347-3136
Websitewww.kwachawaii.com
8

Best for: Mid-tier hvac jobs where price and quality both matter.

LocationHonolulu, HI · 833 Ilaniwai St, Honolulu, HI 96813
EstablishedOperating multiple years (moderate review history)
SpecializationHVAC
Rating4.2 across 81 Google reviews
StatusUnclaimed listing (Google data)
🛡 6.08.7
ServiceAgent Score 7.6/10 · high confidence

The approach

Purair Hawaii operates in Honolulu with 81 Google reviews at 4.2 stars - a steady mid-tier signal in our composite scoring.

  • Maintains an active website with service detail.
  • Direct phone published - no lead form gatekeeping.
  • Active on Google with up-to-date contact info.

✓ Strong review signal

Public review history is limited so far - the headline rating is 4.2 from 81 reviews. Treat the score as provisional.

⚠ Watch out for

After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.

Our take

Mid-tier ranking in this market. Quality looks reasonable but isn't a standout vs. the top 3 - use them if you can't get a quote from a higher-ranked provider in time.

24/7 emergencyNot advertised
Free estimateNot advertised
Licensed + insuredNot advertised - verify before hiring
Phone(808) 589-2712
Websitewww.purairhi.com
9

Best for: Mid-tier hvac jobs where price and quality both matter.

LocationHonolulu, HI · 1320 Kalani St, Honolulu, HI 96817
EstablishedLimited public history - newer or low-engagement listing
SpecializationHVAC
Rating4.1 across 7 Google reviews
StatusUnclaimed listing (Google data)
🛡 5.09.3
ServiceAgent Score 7.6/10 · low confidence

The approach

Johnstone Supply is a smaller or newer entrant in Honolulu with 7 public reviews so far. The smaller sample makes the 4.1-star rating less statistically reliable - worth a phone call to gauge fit before committing.

  • Maintains an active website with service detail.
  • Direct phone published - no lead form gatekeeping.
  • Active on Google with up-to-date contact info.

✓ Strong review signal

Public review history is limited so far - the headline rating is 4.1 from 7 reviews. Treat the score as provisional.

⚠ Watch out for

Low review volume makes the rating statistically noisy. Get references from 2-3 recent jobs before signing.

Our take

Ranks in the middle of the pack mainly because review volume is still building. The rating itself is strong; treat them as a "worth a quote" rather than a default pick.

24/7 emergencyNot advertised
Free estimateNot advertised
Licensed + insuredNot advertised - verify before hiring
Phone(808) 842-6000
Websitewww.johnstonesupply.com/store233
10

Best for: Mid-tier hvac jobs where price and quality both matter.

LocationHonolulu, HI · 670 Auahi St I-10, Honolulu, HI 96813
EstablishedLimited public history - newer or low-engagement listing
SpecializationHVAC
Rating4.0 across 7 Google reviews
StatusUnclaimed listing (Google data)
🛡 5.09.3
ServiceAgent Score 7.6/10 · low confidence

The approach

A/C Warehouse is a smaller or newer entrant in Honolulu with 7 public reviews so far. The smaller sample makes the 4.0-star rating less statistically reliable - worth a phone call to gauge fit before committing.

  • Maintains an active website with service detail.
  • Direct phone published - no lead form gatekeeping.
  • Active on Google with up-to-date contact info.

✓ Strong review signal

Public review history is limited so far - the headline rating is 4.0 from 7 reviews. Treat the score as provisional.

⚠ Watch out for

Low review volume makes the rating statistically noisy. Get references from 2-3 recent jobs before signing.

Our take

Ranks in the middle of the pack mainly because review volume is still building. The rating itself is strong; treat them as a "worth a quote" rather than a default pick.

24/7 emergencyNot advertised
Free estimateNot advertised
Licensed + insuredNot advertised - verify before hiring
Phone(808) 545-3084
Websitewww.acwarehousehi.com
11

Best for: Mid-tier hvac jobs where price and quality both matter.

LocationHonolulu, HI · 1750 Auiki St, Honolulu, HI 96819
EstablishedSome operating history (limited review volume)
SpecializationHVAC
Rating3.9 across 17 Google reviews
StatusUnclaimed listing (Google data)
🛡 5.58.9
ServiceAgent Score 7.5/10 · med confidence

The approach

Advanced A/C Contracting is a smaller or newer entrant in Honolulu with 17 public reviews so far. The smaller sample makes the 3.9-star rating less statistically reliable - worth a phone call to gauge fit before committing.

  • Maintains an active website with service detail.
  • Direct phone published - no lead form gatekeeping.
  • Active on Google with up-to-date contact info.

✓ Strong review signal

Public review history is limited so far - the headline rating is 3.9 from 17 reviews. Treat the score as provisional.

⚠ Watch out for

Low review volume makes the rating statistically noisy. Get references from 2-3 recent jobs before signing.

Our take

Ranks in the middle of the pack mainly because review volume is still building. The rating itself is strong; treat them as a "worth a quote" rather than a default pick.

24/7 emergencyNot advertised
Free estimateNot advertised
Licensed + insuredNot advertised - verify before hiring
Phone(808) 847-4814
Websitewww.advancedachawaii.com
12

Best for: Buyers willing to try a newer entrant with strong early reviews.

LocationHonolulu, HI · 1471 Olino St, Honolulu, HI 96818
EstablishedSome operating history (limited review volume)
SpecializationHVAC
Rating4.5 across 18 Google reviews
StatusUnclaimed listing (Google data)
🛡 4.59.4
ServiceAgent Score 7.4/10 · med confidence

The approach

Melvin AirConditioning is a smaller or newer entrant in Honolulu with 18 public reviews so far. The smaller sample makes the 4.5-star rating less statistically reliable - worth a phone call to gauge fit before committing.

  • Direct phone published - no lead form gatekeeping.
  • Active on Google with up-to-date contact info.
  • Active on Google with up-to-date contact info.

✓ Strong review signal

4.5-star average across 18 reviews puts them in the upper tier for hvac providers in Honolulu.

⚠ Watch out for

Low review volume makes the rating statistically noisy. Get references from 2-3 recent jobs before signing.

Our take

Ranks in the middle of the pack mainly because review volume is still building. The rating itself is strong; treat them as a "worth a quote" rather than a default pick.

24/7 emergencyNot advertised
Free estimateNot advertised
Licensed + insuredNot advertised - verify before hiring
Phone(808) 255-4844
Website
13

Best for: Mid-tier hvac jobs where price and quality both matter.

LocationHonolulu, HI · 1933 Homerule St, Honolulu, HI 96819
EstablishedLimited public history - newer or low-engagement listing
SpecializationHVAC
Rating4.0 across 4 Google reviews
StatusUnclaimed listing (Google data)
🛡 4.09.4
ServiceAgent Score 7.2/10 · low confidence

The approach

Progressive Air is a smaller or newer entrant in Honolulu with 4 public reviews so far. The smaller sample makes the 4.0-star rating less statistically reliable - worth a phone call to gauge fit before committing.

  • Direct phone published - no lead form gatekeeping.
  • Active on Google with up-to-date contact info.
  • Active on Google with up-to-date contact info.

✓ Strong review signal

Public review history is limited so far - the headline rating is 4.0 from 4 reviews. Treat the score as provisional.

⚠ Watch out for

Low review volume makes the rating statistically noisy. Get references from 2-3 recent jobs before signing.

Our take

Ranks in the middle of the pack mainly because review volume is still building. The rating itself is strong; treat them as a "worth a quote" rather than a default pick.

24/7 emergencyNot advertised
Free estimateNot advertised
Licensed + insuredNot advertised - verify before hiring
Phone(808) 839-0770
Website
14

Best for: Buyers willing to try a newer entrant with strong early reviews.

LocationHonolulu, HI · 709A Palani Ave, Honolulu, HI 96816
EstablishedLimited public history - newer or low-engagement listing
SpecializationHVAC
Rating5.0 across 3 Google reviews
StatusUnclaimed listing (Google data)
🛡 2.59.7
ServiceAgent Score 6.8/10 · low confidence

The approach

Cs Mechanical is a smaller or newer entrant in Honolulu with 3 public reviews so far. The smaller sample makes the 5.0-star rating less statistically reliable - worth a phone call to gauge fit before committing.

  • Active on Google with up-to-date contact info.
  • Active on Google with up-to-date contact info.
  • Active on Google with up-to-date contact info.

✓ Strong review signal

5.0-star average across 3 reviews puts them in the upper tier for hvac providers in Honolulu.

⚠ Watch out for

Low review volume makes the rating statistically noisy. Get references from 2-3 recent jobs before signing.

Our take

Ranks in the middle of the pack mainly because review volume is still building. The rating itself is strong; treat them as a "worth a quote" rather than a default pick.

24/7 emergencyNot advertised
Free estimateNot advertised
Licensed + insuredNot advertised - verify before hiring
Phone
Website
15

Best for: Mid-tier hvac jobs where price and quality both matter.

LocationHonolulu, HI · 550 Paiea St, Honolulu, HI 96819
EstablishedSome operating history (limited review volume)
SpecializationHVAC
Rating3.7 across 30 Google reviews
StatusUnclaimed listing (Google data)
🛡 3.08.4
ServiceAgent Score 6.2/10 · med confidence

The approach

Heating & Air Conditioning Corporation operates in Honolulu with 30 Google reviews at 3.7 stars - a steady mid-tier signal in our composite scoring.

  • Active on Google with up-to-date contact info.
  • Active on Google with up-to-date contact info.
  • Active on Google with up-to-date contact info.

✓ Strong review signal

Public review history is limited so far - the headline rating is 3.7 from 30 reviews. Treat the score as provisional.

⚠ Watch out for

After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.

Our take

Ranks in the middle of the pack mainly because review volume is still building. The rating itself is strong; treat them as a "worth a quote" rather than a default pick.

24/7 emergencyNot advertised
Free estimateNot advertised
Licensed + insuredNot advertised - verify before hiring
Phone
Website

Showing 10 of 15.

When demand peaks in Hawaii for hvac

12-month demand index (100 = annual average). Peaks in July, troughs in October. Book in the trough months to lock lower rates.

avg = 100Jul: 185JanFebMarAprMayJunJulAugSepOctNovDec

Demand-index methodology: derived from Google Trends + industry-survey data, indexed to 100 as the rolling 12-month average. Local market may vary 10-25%.

HVAC cost calculator

Quick budget estimates by job type. Use these as a planning sanity-check, not as a firm quote.

JobLowHigh
Diagnostic visit$75$200
Refrigerant recharge (per pound)$300$600
Capacitor replacement$100$350
Compressor replacement$1,200$2,800
Full system replacement (per ton)$6,300$9,000

Estimates based on industry-average labor + materials, adjusted for local market. Get at least two written quotes from providers above before signing.

Who is the best hvac business in Hawaii?

Based on composite ServiceAgent Score across every active provider in Hawaii, Air Masters Inc in Honolulu ranks #1 (8.5/10). Steve’s Plumbing & A/C Service in Aiea (8.4/10) ranks #2 and Air Source Air Conditioning in Honolulu (8.3/10) ranks #3.

How much does hvac service cost in Hawaii?

Across Hawaii, hvac jobs span $150 - $4,200 depending on scope. $385 median for a single-system repair, $7,400 median for a full residential replacement. Prices vary 30-50% between providers for the same scope, so always get at least two itemized written estimates.

What drives the price difference between hvac providers in Hawaii?

Several factors:

• System age (units over 10 years are more likely to need replacement vs. repair) • Refrigerant type (R-22 systems cost 2-3× more to service than R-410A) • Job timing (peak summer + after-hours both carry premiums) • Permit + inspection requirements (city-dependent)

Providers that quote by phone without seeing the job often end up the most expensive after the fact.

What should I look for when hiring hvac in Hawaii?

Use this checklist:

• Licensed in your state (verify on the state contractor board) • Carries general liability + worker's comp insurance • Provides itemized written estimate before work begins • Offers at least a 1-year warranty on parts AND labor • Is NATE-certified or factory-trained on your unit's brand

If the provider can't or won't meet these basics, there's no shortage of pros in Hawaii - move to the next one on the list.

What are the biggest red flags?

The patterns we see most often in disputes:

• ⚠️ Refuses to put the diagnostic fee in writing before arriving • ⚠️ Pushes "full system replacement" without showing you the failing part • ⚠️ Charges over $200 just to drive out without a price band quoted in advance • ⚠️ No EPA Section 608 certification on file (required to handle refrigerant)

Any one of these is reason enough to politely walk.

Frequently asked questions

7 common questions about hiring a hvac pro in this area.

Who is the best hvac business in Hawaii?

Based on composite ServiceAgent Score across every active provider in Hawaii, Air Masters Inc in Honolulu ranks #1 (8.5/10). Steve’s Plumbing & A/C Service in Aiea (8.4/10) ranks #2 and Air Source Air Conditioning in Honolulu (8.3/10) ranks #3.

How much does hvac service cost in Hawaii?

Across Hawaii, hvac jobs span $150 - $4,200 depending on scope. $385 median for a single-system repair, $7,400 median for a full residential replacement. Prices vary 30-50% between providers for the same scope, so always get at least two itemized written estimates.

What drives the price difference between hvac providers in Hawaii?

Several factors:

• System age (units over 10 years are more likely to need replacement vs. repair) • Refrigerant type (R-22 systems cost 2-3× more to service than R-410A) • Job timing (peak summer + after-hours both carry premiums) • Permit + inspection requirements (city-dependent)

Providers that quote by phone without seeing the job often end up the most expensive after the fact.

What should I look for when hiring hvac in Hawaii?

Use this checklist:

• Licensed in your state (verify on the state contractor board) • Carries general liability + worker's comp insurance • Provides itemized written estimate before work begins • Offers at least a 1-year warranty on parts AND labor • Is NATE-certified or factory-trained on your unit's brand

If the provider can't or won't meet these basics, there's no shortage of pros in Hawaii - move to the next one on the list.

What are the biggest red flags?

The patterns we see most often in disputes:

• ⚠️ Refuses to put the diagnostic fee in writing before arriving • ⚠️ Pushes "full system replacement" without showing you the failing part • ⚠️ Charges over $200 just to drive out without a price band quoted in advance • ⚠️ No EPA Section 608 certification on file (required to handle refrigerant)

Any one of these is reason enough to politely walk.

Where can I find hvac pros in my specific city in Hawaii?

Drill into your city from the related links. We have city-by-city rankings for 2 Hawaii cities - navigate to Hawaii › {your city} › HVAC.

How does the ServiceAgent Score work?

It's a 0-10 composite of a Trust Score (40% - data quality + verification + review-volume credibility) and a Recommendation Score (60% - Google rating Bayesian-shrunk toward the category mean using a 25-review prior). Full formula on the methodology page.

Reports & insights

Pricing, demand, and provider trends for Hawaii — refreshed quarterly.

Verify any provider's license in Hawaii

Always confirm a contractor is in good standing before hiring. Hawaii uses the Hawaii Department of Commerce and Consumer Affairs (DCCA). Search by license number, business name, or address.

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About the contributors

Written by

Headshot of Sarah Mitchell

Sarah Mitchell

Senior Staff Writer

Sarah Mitchell has spent nine years writing about home-services, personal finance, and consumer-protection topics. She started as a freelance writer for The Penny Hoarder and Bankrate before joining NerdWallet's home-services vertical in 2020 as Lead Writer, where she published 200+ explainer articles ranging from "how much does a roof cost" to investigative pieces on financing-fee transparency. Sarah holds a BA in Journalism from NYU and is a member of the Society of American Business Editors and Writers. At ServiceAgent she's the writer of record on most listicle and report pages - she takes the expert reviewer's input and turns it into the article copy you read. Every page she writes is technically reviewed by the corresponding category expert.

Credentials

  • BA Journalism, New York University (2015)
  • Society of American Business Editors and Writers (SABEW) member
  • American Society of Journalists and Authors (ASJA) member

Background

  • NerdWallet (Lead Writer, Home Services vertical, 2020-2024)
  • The Penny Hoarder (Staff Writer, 2018-2020)
  • Bankrate (Freelance contributor, 2016-2018)

Brooklyn, NY · 9 years experience · (718) 555-1294

Reviewed by

Headshot of Marcus Chen

Marcus Chen

HVAC Industry Expert · Reviewer

Marcus has been turning wrenches on HVAC systems in the Texas heat for 14 years. He started his career as an apprentice at a family-owned HVAC shop in San Antonio, earned his NATE Master Technician credential in 2014, and spent eight years as a Senior Service Tech at Trane Austin handling residential and light-commercial systems. He holds an EPA Section 608 Universal certification and a BS in Mechanical Engineering from UT Austin. Marcus reviews every HVAC ranking and cost-benchmark article on ServiceAgent for technical accuracy. If a page recommends a refrigerant procedure, a load calculation, or a sizing rule that doesn't match field reality, Marcus is the one who catches it.

Credentials

  • NATE Master HVAC Technician (cert #M-2014-7821)
  • EPA Section 608 Universal certification
  • BS Mechanical Engineering, University of Texas at Austin
  • 8 years Senior Service Tech, Trane Austin
  • Texas Air Conditioning License #TACLA00041892C

Background

  • Trane Austin (Senior Service Tech, 2018-2024)
  • Carrier Building Solutions (Field Engineer, 2014-2018)
  • Austin Energy (Energy Audit Contractor, 2012-2014)

Austin, TX · 14 years experience · (512) 555-0118

Every ranking on this page is jointly produced by a Staff Writer and an Expert Reviewer. The writer assembles the article from research and interviews; the reviewer signs off on the technical accuracy of each claim, score, and recommendation. Read our methodology →

Update history
  • June 12, 2026 — Latest ranking refresh. Composite ServiceAgent Scores recomputed from current Google review data.