UST Air Conditioning delivers fast, affordable air conditioning repair, heating repair and HVAC installation in Makaha Valley. Our technicians arrive in stocked trucks, diagnose the real problem, explain your options in plain language and get the cool air flowing again, usually on the first visit.
Each service below has its own Makaha Valley 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 Makaha Valley.
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 Makaha ValleyProperly 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 Makaha ValleyA 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 Makaha ValleyNights, 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 Makaha ValleyRepair of whole-home ducted air conditioning systems, from the outdoor condenser to the air handler, ductwork and thermostat.
Central Air Repair in Makaha ValleyThe most common call we get, solved the same day: a system that runs but cannot bring the temperature down.
AC Not Cooling Repair in Makaha ValleyCompressor 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 Makaha ValleyProper leak detection, repair and weighing in the correct refrigerant charge for R-410A, R-32 and older R-22 systems.
AC Refrigerant Recharge in Makaha ValleySingle 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 Makaha ValleyHeating 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 Makaha ValleyRepair 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 Makaha ValleyReplacement and new installation of electric furnaces, heat-strip air handlers, wall heaters and heat pump heating for cooler Hawaii elevations.
Heater Installation in Makaha ValleyA 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 Makaha ValleyNo 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 Makaha ValleyHeat 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 Makaha ValleyOne call for any heating, ventilation or air conditioning problem: central systems, mini-splits, heat pumps, ductwork and controls.
HVAC Repair in Makaha ValleyDesign and installation of complete heating and cooling systems for new construction, renovations and worn-out equipment replacement.
HVAC Installation in Makaha ValleyScheduled maintenance that keeps cooling and heating systems efficient, protects warranties and stops breakdowns during the hottest weeks of the year.
HVAC Maintenance in Makaha ValleyHeating and cooling repair for single-family homes, condos, townhomes, ohana units and vacation rentals across Hawaii.
Residential HVAC Repair in Makaha ValleyRooftop 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 Makaha ValleySealing, repair, replacement and cleaning of ductwork so cooled air reaches every room instead of the attic.
Ductwork Service in Makaha ValleySmart and programmable thermostat installation, wiring repair and setup so your system runs efficiently and you can control it from anywhere.
Thermostat Service in Makaha ValleyWhole-home dehumidifiers, filtration, UV coil lights and ventilation upgrades that fight the mold, vog and humidity Hawaii homes deal with.
Indoor Air Quality in Makaha ValleyBetween the afternoon heat, the humidity that settles in when the trades drop, and the salt that rides in on the breeze, air conditioners around Makaha Valley 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.
Duct cleaning and sealing after our renovation. The dust problem is gone and the system is quieter. Crew was careful with the floors and furniture.
Lehua D., Makaha ValleyVery thorough. The technician explained what he was checking at each step and left a written report with photos. Signed up for the maintenance plan on the spot.
Ryan I., Makaha ValleyFast, professional and no upselling. The tune-up was thorough and they caught a failing contactor before it left us without AC in August.
Michael S., Makaha ValleyWe cover all of Oahu, including Makaha, Waianae, Maili, Nanakuli, Mokuleia, Waialua. If you are anywhere in Hawaii, call (855) 459-5498 and we will confirm availability.
Yes. UST Air Conditioning answers live 24/7 and dispatches emergency technicians throughout Makaha Valley and the rest of Oahu for no-cool, no-heat, leaks and electrical problems.
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.
Salt and humidity corrode electrical parts and coils, and dirty coils make the compressor overheat during the hottest weeks. A spring tune-up prevents most of these breakdowns.
Yes. Mini-splits are our most requested installation on Oahu because they cool individual rooms efficiently without ductwork and many models also heat.
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.
Live dispatchers 24/7. Same-day service in most areas. Flat-rate pricing before work begins.