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Hawaii

HVAC companies in Honolulu, HI

19 local HVAC companies based within about 25 miles of Honolulu, listed A to Z with phone numbers, addresses and services. Paid placements are labeled.

19 listed4 say 24/7 emergency1 heat pumps14 commercial
See the listNo heat or AC? What to do first

No heat or no cooling right now?

If you smell gas or a carbon monoxide alarm sounds, leave first and call 911 or your gas utility from outside. Otherwise, call a company below that says it takes emergency calls. Quick checks first: AC not cooling · furnace not working.

What to do first

The list

Honolulu HVAC companies, A to Z

Filter by what each business says on its own website. “Says 24/7 emergency” means its site says so – call to confirm before you rely on it.

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Your HVAC company, Honolulu

The one City Spotlight place for Honolulu sits here, above the A to Z list. Requests sent from this page for areas the Spotlight company serves go to it. Offered only to companies that pass our listing rules. How it works

Aire Conditioner Shoppe

Based in Waipahu, HI · 94-529 Uke'e St. Suite#105, Waipahu, HI 96797

Names on its website: Honolulu, Kaimuki, Mililani, Leeward, Windward

Cooling onlyHomesAC repairAC installationMini-splits

License number shown on its website: License Number C-39538 & C-31915

(808) 676-1455Website

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Cool Air Systems Hawaii

Based in Kailua, HI · 407 Uluniu St, Kailua, HI

Names on its website: Kaneohe, Aiea, Hawaii Kai, Kapolei, Mililani, Waipahu, Ewa Beach, Manoa, Kalihi, Waimanalo and more

Cooling onlyHomesBusinessesAC repairAC installationMaintenance

License number shown on its website: C-37611

(808) 266-5247Website

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KK Air Conditioning

Based in Pearl City, HI · 98-723 Kuahao Place, Suite B2, Pearl City, HI 96782

Names on its website: Ewa Beach, Kapolei, Waipahu, Honolulu, Mililani, Wahiawa, Aiea, Kailua, Kaneohe

Cooling onlyHomesAC repairAC installationMaintenance

License number shown on its website: C-32488

(808) 680-0143Website

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Smart AC Systems

Based in Honolulu, HI · 1320 Kalani St, Unit 311, Honolulu, HI 96817

Names on its website: Kailua, Hawaii Kai, Ewa Beach, Kapolei, Kaneohe, Pearl City, Aiea, Mililani, Waipahu

Cooling onlyHomesBusinessesAC repairAC installationMini-splitsMaintenance

License number shown on its website: HI License# CT-37985

(808) 664-1052Website

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Ultimate Air Conditioning

Based in Waialua, HI · 66-944 Alena Loop, Waialua, HI 96791

Names on its website: Honolulu, Kailua, Kaneohe, Pearl City, Kapolei, Waikiki, North Shore

Cooling onlyHomesBusinessesAC repairAC installationMini-splitsMaintenance
(808) 630-0784Website

Is this your company? Update or remove it

Details on this page come from each business’s own website, checked October 2026. Free listings are shown alphabetically. How we list · Update or remove a listing

Before you hire

Checking an HVAC company in the Honolulu area

HVAC licenses in Hawaii

HVAC contractors are licensed by the state.

Who licenses: Hawaii Board of Contractors License, Department of Commerce and Consumer Affairs

License types: C-52 Ventilating and Air Conditioning, C-40 Refrigeration, C-40a Prefabricated Refrigerator Panels, C-4 Boiler, Hot-Water Heating, and Steam Fitting.

Companies: Under HRS Chapter 444, anyone who offers to or contracts to perform residential, commercial or public works construction, alterations or improvements needs a contractor license; HVAC work falls under the C-52 Ventilating and Air Conditioning specialty classification. Work under $1,000 in total that needs no building permit is exempt, and an owner may do certain work on their own residence.

Local rules: Owners building or improving their own home must register with the county building department, and building permits issued by the counties are tied to the exemption threshold.

Check a license: mypvl.dcca.hawaii.gov

Use the DCCA public license search to confirm the company holds an active C-52 (or other relevant) classification and the license is in good standing before signing.

Federal rule: in every state, technicians who handle refrigerant must hold EPA Section 608 certification, whatever the state or city requires.

We could not confirm every detail from Hawaii’s own sources, so treat this as a starting point and check with the agency.

Sources: cca.hawaii.gov, cca.hawaii.gov, cca.hawaii.gov. Checked October 2026 from official sources. This is not legal advice.

Questions to ask

Ask every company the same questions: license number, insurance, EPA refrigerant certification, a written itemized estimate, a load calculation for new equipment, after-hours rates, who pulls the permit, and the warranty. All eight questions.

Seasonal care

Keeping cool in Honolulu

Cooling season is the long one in Honolulu, so most of the wear falls on the air conditioner or heat pump. These guides cover the care that prevents most summer breakdowns.

AC maintenance: a spring checklist for homeownersA central air conditioner needs a little attention before the first hot week. Most of it is cleaning and clearing you can do yourself in an afternoon; refrigerant and electrical work belongs to a technician.AC not cooling? 10 checks before you callMost "no cooling" calls start with something you can check in ten minutes. Here is what to look at, in order, and when to stop and call.How often to change your air filter (furnace and AC)There is no single schedule that fits every home. The habit that works is to look at the filter every month and replace it when it is dirty. Here is what speeds that up and how to get the swap right.Indoor humidity: the right level and how to control itHumidity affects comfort, your home and mold growth as much as temperature does. Here is the level to aim for and the tools that control it.Heat pump blowing cold air? Normal behavior vs a real problemA heat pump can feel like it is blowing cold air when it is working normally. It can also mean a real fault. These checks help you tell which one you have.Thermostat settings that save energy without sacrificing comfortYour thermostat controls most of what you spend on heating and cooling. A few setting habits save energy without making the house uncomfortable.

All HVAC guides

Questions

Honolulu HVAC questions

How many HVAC companies are listed in Honolulu?

19 HVAC companies, each based within about 25 miles of Honolulu. They are listed alphabetically.

Which Honolulu HVAC companies say they offer 24/7 emergency service?

4 of the businesses listed here say on their own website that they offer 24/7 or 24-hour emergency service: Advanced A/C Contracting, Alaka’i Mechanical, Aloha AC Services, Cornerstone Air Conditioning. Call to confirm availability and after-hours rates.

Do HVAC contractors in Honolulu need a license?

Hawaii licenses HVAC contractors statewide through the Hawaii Board of Contractors License, Department of Commerce and Consumer Affairs. Check a license at mypvl.dcca.hawaii.gov.

Which Honolulu companies work on heat pumps?

1 of the listed businesses say on their own website that they install or repair heat pumps. Use the Heat pumps filter above the list.

Which HVAC companies here do commercial work?

14 of the listed businesses say on their own website that they work on commercial properties. Use the Commercial filter above the list.

Do technicians need EPA certification?

Yes: federal rules require technicians who handle refrigerant to hold EPA Section 608 certification, in every state. Ask any company you are considering.

Nearby metro areas: Los Angeles, CA · Riverside, CA · San Francisco, CA · San Diego, CA · Sacramento, CA · San Jose, CA · Fresno, CA · Bakersfield, CA. All of Hawaii.

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