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Heat Pump Installers in Hawaii: HVAC & Mini Split

Find heat pump and HVAC installers in Hawaii. We've gathered 9 installers from across Hawaii with their phone number, address, hours, and Google rating, so you can compare and reach out for quotes. Listings span Aiea, Hilo, Kahului, Kailua-Kona, Kapolei and Kailua and more, so there's likely a contractor near you. The installers below average 4.7 stars on Google. A typical heat pump uses about 4,000 kWh a year, which at 42.9¢/kWh in Hawaii comes to roughly $1,714 a year in electricity; a right-sized, well-installed system is what keeps it at the low end of that range.

Before you get quotes in Hawaii: size and price the system

Heat pump sizing calculatorBTU and tonnage for your home and climateHeat pump cost calculatorInstalled price by system type and sizeMini split sizingBTU per zone for ductless systems

Hawaii at a glance

42.9¢
per kWh, residential

#1 most expensive of 51

$212.12
average monthly bill

EIA, 2024 annual avg

495 kWh
average monthly use

EIA, 2024 annual avg

$1,714.40
a year to run a heat pump

4,000 kWh/yr (typical) at 42.9¢/kWh

9 heat pump and HVAC installers in Hawaii

Spread across Hawaii so there's likely one near you. Enter your ZIP above to sort nearest-first. Details from public Google Business Profiles: verify before hiring.

How to choose a heat pump installer in Hawaii

Licensed HVAC contractor, EPA 608 certified

Anyone who opens a refrigerant line must hold EPA Section 608 certification (federal), and Hawaii may license HVAC contractors on top of that. The outdoor unit and any backup heat strips need their own 240V circuits, which is licensed electrical work: ask who does it, who pulls the electrical permit, and confirm liability insurance plus a workmanship warranty, not just the manufacturer's parts warranty.

Insist on a Manual J load calculation

An oversized heat pump short-cycles, dehumidifies poorly, and wears out early; an undersized one leans on expensive backup heat. A good installer runs an ACCA Manual J load calculation on your actual house (insulation, windows, orientation, air leakage) and a Manual S selection that checks the unit's real capacity at your design temperature, not its nominal tonnage. If a quote is based on square footage alone, get another quote.

Compare quotes on ratings, cold-weather capacity, and scope

Line up quotes on the same SEER2 and HSPF2 ratings, the same ducted or ductless design, and the same zoning. In a cold climate ask for the rated heating capacity at 5°F and whether the system is a cold-climate model. Make sure each quote spells out duct modifications, line-set length, the electrical circuit, the thermostat, backup heat, the permit and inspection, and the commissioning (refrigerant charge and airflow verified, not just a thermostat test).

What to know before hiring in Hawaii

The largest utilities serving Hawaii homes are Hawaiian Electric Co (276,206 residential customers, 42.9¢/kWh), Hawaii Electric Light Co (78,386 residential customers, 48.3¢/kWh) and Maui Electric Co Ltd (61,811 residential customers, 44.0¢/kWh). Your utility sets the rate your heat pump runs on, and it is also who an installer files interconnection or service paperwork with, so name it when you ask for quotes.

Check the license before you sign

The outdoor unit and any backup heat strips need new 240V circuits, which is licensed electrical work. Electrical contractors in Hawaii are licensed by the Hawaii DCCA Board of Electricians and Plumbers. Journey Worker, Supervising and Specialty electrician licenses; electrical contractors (C-13) are licensed by the DCCA Contractors License Board.

Look up a licenseBoard siteLinks checked 2026-10-19

Listing data is sourced from public Google Business Profiles and may be out of date. WattSimple is not affiliated with, and does not endorse or recommend, any listed company. Verify licensing and details directly before hiring.

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Frequently asked questions

Use a licensed HVAC contractor with EPA 608 certification, confirm they pull the mechanical and electrical permits Hawaii requires and schedule the inspection, and insist on an ACCA Manual J load calculation before any quote. Get at least three written quotes on the same system type and ratings (SEER2, HSPF2, and capacity at 5°F for cold climates), and check that commissioning, the electrical circuit, and a workmanship warranty are included.

Plan your heat pump project

Heat pump sizing calculator

BTU and tonnage from your home and climate.

Heat pump cost calculator

Installed price by system type and size.

Heat pump cost in Hawaii

Install ranges and running cost at Hawaii's rate.

Hawaii electricity rates

What you pay per kWh today in Hawaii.

Heat pump installation cost

What drives the installed price.

How to choose a heat pump

Ducted vs. ductless, ratings, cold-climate models.

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