When the air conditioner quits in Kailua, you do not want a voicemail. UST Air Conditioning answers the phone 24 hours a day, sends a technician the same day in most cases, and fixes AC, heating and HVAC problems with flat-rate pricing you approve before the work starts.
Each service below has its own Kailua page with local details, pricing guidance and answers to common questions. Whether you need AC repair near me, furnace repair, heat pump repair or a full HVAC installation, UST Air Conditioning handles it in Kailua.
Fast diagnosis and repair of any central, split or window air conditioner that is not cooling, leaking, tripping breakers or making noise.
AC Repair in KailuaProperly sized, correctly charged new air conditioning systems: central air, ductless mini-splits and high-efficiency heat pumps, installed right the first time.
AC Installation in KailuaA thorough seasonal tune-up that cleans coils, checks refrigerant charge, tightens electrical connections and catches small problems before they become no-cool calls.
AC Tune-up in KailuaNights, weekends and holidays: when the air conditioner dies in the middle of a Hawaii heat wave, a live dispatcher answers and a technician is on the way.
Emergency AC Repair in KailuaRepair of whole-home ducted air conditioning systems, from the outdoor condenser to the air handler, ductwork and thermostat.
Central Air Repair in KailuaThe most common call we get, solved the same day: a system that runs but cannot bring the temperature down.
AC Not Cooling Repair in KailuaCompressor diagnostics, hard-start kits, and replacement of failed compressors under warranty or out of warranty, with honest advice on when replacement makes more sense.
AC Compressor Repair in KailuaProper leak detection, repair and weighing in the correct refrigerant charge for R-410A, R-32 and older R-22 systems.
AC Refrigerant Recharge in KailuaSingle and multi-zone ductless systems, the most popular way to cool Hawaii homes without ductwork: installation, repair, cleaning and error-code diagnostics.
Mini-split Service in KailuaHeating repair for heat pumps, mini-splits in heat mode, electric furnaces and wall heaters, for the cool nights that upcountry, Volcano and windward homes really do get.
Heating Repair in KailuaRepair of electric and gas furnaces, air handlers with heat strips and packaged systems: no heat, short cycling, tripped limits and noisy blowers.
Furnace Repair in KailuaReplacement and new installation of electric furnaces, heat-strip air handlers, wall heaters and heat pump heating for cooler Hawaii elevations.
Heater Installation in KailuaA pre-season heating check that tests elements, limits, defrost cycles and airflow so the system is ready for the first cold night.
Heating Tune-up in KailuaNo heat on a cold night in Volcano, Kula or Waimea is an emergency for families with kids, kupuna or medical needs. We answer 24/7.
Emergency Heating Repair in KailuaHeat pumps are the ideal Hawaii system: efficient cooling all year and heat when you need it. We repair, maintain and install all major brands.
Heat Pump Repair in KailuaOne call for any heating, ventilation or air conditioning problem: central systems, mini-splits, heat pumps, ductwork and controls.
HVAC Repair in KailuaDesign and installation of complete heating and cooling systems for new construction, renovations and worn-out equipment replacement.
HVAC Installation in KailuaScheduled maintenance that keeps cooling and heating systems efficient, protects warranties and stops breakdowns during the hottest weeks of the year.
HVAC Maintenance in KailuaHeating and cooling repair for single-family homes, condos, townhomes, ohana units and vacation rentals across Hawaii.
Residential HVAC Repair in KailuaRooftop units, split systems, VRF, walk-ins and make-up air for restaurants, retail, offices, hotels and medical spaces, with maintenance contracts that keep doors open.
Commercial HVAC in KailuaSealing, repair, replacement and cleaning of ductwork so cooled air reaches every room instead of the attic.
Ductwork Service in KailuaSmart and programmable thermostat installation, wiring repair and setup so your system runs efficiently and you can control it from anywhere.
Thermostat Service in KailuaWhole-home dehumidifiers, filtration, UV coil lights and ventilation upgrades that fight the mold, vog and humidity Hawaii homes deal with.
Indoor Air Quality in KailuaBetween the afternoon heat, the humidity that settles in when the trades drop, and the salt that rides in on the breeze, air conditioners around Kailua live a harder life than almost anywhere on the mainland. Our technicians plan for that with coated coils, corrosion inhibitors and more frequent coil washing.
Within Kailua we regularly work in Lanikai, Enchanted Lake, Kalaheo Hillside, Coconut Grove, Keolu Hills, Maunawili and Kaimalino.
Our AC died on a Saturday afternoon with family visiting. The dispatcher picked up on the second ring and a technician was here within a couple of hours. Bad capacitor, fixed on the spot. Cool house by dinner.
Malia R., KailuaThermostat was blank and I assumed the worst. Turned out to be the float switch on a clogged drain. Quick fix, small bill, honest explanation.
Michael S., KailuaStraightforward pricing, showed up when they said they would, and the office followed up a week later to make sure everything was still working. That is rare these days.
Ryan I., KailuaYes. Plan members get scheduled tune-ups, priority booking during heat waves, repair discounts and a full service history for the property.
We cover all of Oahu, including Maunawili, Kaneohe Station, Waimanalo, Kaneohe, Waimanalo Beach, Heeia. If you are anywhere in Hawaii, call (855) 459-5498 and we will confirm availability.
Same day for most repair calls and within hours for emergencies. Call (855) 459-5498 and the dispatcher gives you a real arrival window.
All of them: Carrier, Trane, Lennox, Rheem, Goodman, Daikin, Mitsubishi, Fujitsu, LG, Gree, Panasonic, York, Bryant and more. Our trucks carry universal and brand-specific parts.
Yes. Mini-splits are our most requested installation on Oahu because they cool individual rooms efficiently without ductwork and many models also heat.
Most common repairs, such as capacitors, contactors, drain clearing and fan motors, fall in a modest flat-rate range that we quote before starting. Larger repairs like compressors or coils are priced against replacement so you can decide. There are no hidden fees.
Live dispatchers 24/7. Same-day service in most areas. Flat-rate pricing before work begins.