Local heating and air conditioning service built for Hawaii's salt air, humidity, vog and cool upcountry nights.
UST Air Conditioning was founded on a simple idea: when your air conditioner fails in Hawaii, you should reach a real person immediately, get a real arrival time, and pay a price you approved before any work started. That is still how every call is handled.
Air conditioning repair, heating repair, heat pump and mini-split service, new system installation, ductwork, thermostats, indoor air quality and commercial HVAC. Our technicians service every major brand and carry the parts that fail most often in island conditions.
Every city in Hawaii. From Honolulu, Kapolei and Kailua on Oahu to Hilo and Kailua-Kona on the Big Island, Kahului and Kihei on Maui and Lihue and Kapaa on Kauai. See the full list of locations.
Great experience with the commercial maintenance contract for our office. Quarterly visits, clear reports and no surprise breakdowns in two years.
David W., HawaiiWe had a salt-corroded outdoor unit that finally gave out. UST replaced it with a coated-coil model and explained how to hose it down monthly. Wish we had called them years ago.
Kawika O., HawaiiWe manage several vacation rentals and needed a company that would coordinate with guests and send invoices to us. UST has been reliable, on time and fair on price every single call.
Jason L., HawaiiLive dispatchers 24/7. Same-day service in most areas. Flat-rate pricing before work begins.