When the air conditioner quits in Waikele, 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 Waikele 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 Waikele.
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 WaikeleProperly 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 WaikeleA 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 WaikeleNights, 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 WaikeleRepair of whole-home ducted air conditioning systems, from the outdoor condenser to the air handler, ductwork and thermostat.
Central Air Repair in WaikeleThe most common call we get, solved the same day: a system that runs but cannot bring the temperature down.
AC Not Cooling Repair in WaikeleCompressor 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 WaikeleProper leak detection, repair and weighing in the correct refrigerant charge for R-410A, R-32 and older R-22 systems.
AC Refrigerant Recharge in WaikeleSingle 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 WaikeleHeating 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 WaikeleRepair 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 WaikeleReplacement and new installation of electric furnaces, heat-strip air handlers, wall heaters and heat pump heating for cooler Hawaii elevations.
Heater Installation in WaikeleA 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 WaikeleNo 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 WaikeleHeat 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 WaikeleOne call for any heating, ventilation or air conditioning problem: central systems, mini-splits, heat pumps, ductwork and controls.
HVAC Repair in WaikeleDesign and installation of complete heating and cooling systems for new construction, renovations and worn-out equipment replacement.
HVAC Installation in WaikeleScheduled maintenance that keeps cooling and heating systems efficient, protects warranties and stops breakdowns during the hottest weeks of the year.
HVAC Maintenance in WaikeleHeating and cooling repair for single-family homes, condos, townhomes, ohana units and vacation rentals across Hawaii.
Residential HVAC Repair in WaikeleRooftop 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 WaikeleSealing, repair, replacement and cleaning of ductwork so cooled air reaches every room instead of the attic.
Ductwork Service in WaikeleSmart and programmable thermostat installation, wiring repair and setup so your system runs efficiently and you can control it from anywhere.
Thermostat Service in WaikeleWhole-home dehumidifiers, filtration, UV coil lights and ventilation upgrades that fight the mold, vog and humidity Hawaii homes deal with.
Indoor Air Quality in WaikeleBetween the afternoon heat, the humidity that settles in when the trades drop, and the salt that rides in on the breeze, air conditioners around Waikele 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.
The mini-split in our bedroom kept dripping down the wall. Two other companies never called back. UST came the next morning, cleared the drain, cleaned the coil and showed me photos of the mold they removed.
David W., WaikeleHeat pump stopped heating on a cold Volcano night. The technician walked me through a reset on the phone first, then came out the next day to replace the defrost board. Really appreciated not being charged for an unnecessary trip.
Pua L., WaikeleStraightforward 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.
David W., WaikeleAbsolutely. We work with owners and property managers across Oahu, coordinate with guests and cleaners, and send invoices and reports directly to you.
Same day for most repair calls and within hours for emergencies. Call (855) 459-5498 and the dispatcher gives you a real arrival window.
Yes. UST Air Conditioning answers live 24/7 and dispatches emergency technicians throughout Waikele and the rest of Oahu for no-cool, no-heat, leaks and electrical problems.
We cover all of Oahu, including Waipahu, Royal Kunia, Waipio, West Loch Estate, Waipio Acres, Pearl City. If you are anywhere in Hawaii, call (855) 459-5498 and we will confirm availability.
Yes. Mini-splits are our most requested installation on Oahu because they cool individual rooms efficiently without ductwork and many models also heat.
Some do, especially at elevation and on windward slopes where winter nights drop into the 50s. Heat pumps and mini-splits in heat mode are the most efficient way to add heat.
Live dispatchers 24/7. Same-day service in most areas. Flat-rate pricing before work begins.