HVAC Repair in Round Rock, TX78665
Arctic Air Heating & Cooling dispatches licensed, insured heating and air conditioning technicians toRound Rock and the 78665 ZIP code 24 hours a day, 7 days a week. Target response time in this service zone: 60-90 minutes.
Extended extreme heat, attic temperatures well above 140 degrees, and grid stress during heat waves are the norm. Across the 78665 area that translates into a steady stream of failed capacitors, clogged filters, dying blower motors and refrigerant leaks — most of which we can diagnose and repair in one visit.
Talk to a live dispatcher in Round Rock
Serving 78665 and Williamson County — no phone trees, no callback waiting.
- We test airflow and static pressure, not just refrigerant charge
- Combustion and carbon monoxide testing on every furnace call
- Digital condition report sent to you the same day
- Financing available on qualifying replacements
★★★★★4.9 average · 168 verified reviews
- Licensed & Insured Technicians
- Background-Checked Crews
- Upfront Flat-Rate Pricing
- Same-Day & Next-Day Service
- No Overtime Charges
- All Work Warrantied
The Round Rock78665 calls we answer most often
If your system is doing any of the following, it is worth a diagnostic before the fault gets more expensive.
Frozen evaporator coil or ice on the refrigerant lines
Heat pump stuck blowing cold air in heating mode
Breaker trips every time the system starts
Loud banging on start-up (compressor slugging)
Outdoor condenser humming but the fan not turning
Dead or bulging run capacitor on the condenser
Heating and air conditioning service built around Round Rock
We keep licensed, background-checked technicians on the road in Round Rock and the surrounding 78665 service area, so a no-cool or no-heat call usually gets a same-visit fix rather than a return trip.
Homes in Williamson County tend to be a mix of older builds with original ductwork and newer infill construction, which means airflow problems show up very differently from one street to the next.
If your system is over ten years old and you have had two repairs in the last two seasons, a replacement comparison is usually worth running even if the current unit still runs.
Typical Round Rock service pricing
| Service | Typical Range |
|---|---|
| Diagnostic / service call | $70 – $140 |
| Capacitor replacement | $167 – $391 |
| Contactor replacement | $177 – $419 |
| Refrigerant leak repair + recharge | $298 – $837 |
| Blower motor replacement | $419 – $884 |
| Compressor replacement | $1,302 – $2,697 |
| Hot surface igniter / flame sensor | $149 – $372 |
| Furnace control board | $353 – $791 |
| Condensate drain / float switch | $121 – $316 |
| Thermostat install (wired or smart) | $140 – $419 |
| Duct cleaning (whole home) | $353 – $837 |
| Full system replacement (installed) | $5,580 – $12,090 |
Market ranges reported for Round Rock, TX and the wider South-Central region. Your flat-rate quote is confirmed on site before any work begins.
Services available in 78665
Residential and light commercial, all major brands, all hours.
Air Conditioning Repair in Round Rock
Diagnosis and repair for central air conditioners, heat pumps in cooling mode, ductless mini-splits and packaged rooftop units.
Furnace Repair in Round Rock
Gas, propane, oil and electric furnace troubleshooting and repair.
HVAC Installation & Replacement in Round Rock
Full system replacement and new construction installs with a Manual J load calculation so the equipment is actually sized for your home.
Heat Pump Repair & Service in Round Rock
Heat pump diagnosis and repair for both heating and cooling operation, including cold-climate units, defrost board failures, reversing valve problems, auxiliary heat strip faults and refrigerant charge issues.
24/7 Emergency HVAC Repair in Round Rock
Around-the-clock response for no-heat in freezing weather, total AC failure during a heat wave, gas smells, carbon monoxide alarms, water flooding from the indoor unit and complete system shutdowns.
Air Duct Cleaning & Sealing in Round Rock
Whole-home duct cleaning and aeroseal-style duct sealing to recover lost airflow, reduce dust and lower the load on your equipment.
HVAC Maintenance & Tune-Up in Round Rock
Seasonal precision tune-ups that catch failing components before they strand you.
Commercial HVAC Service in Round Rock
Service for light commercial and commercial properties including rooftop packaged units, VRF and VRV systems, split systems, make-up air units and building automation controls.
What happens when you call
No forms, no waiting for a callback window. One phone call starts the whole process.
- Step 1: Call the dispatch lineYou reach a live dispatcher, not a recording. They confirm your address, the symptom you are seeing and how urgent it is.
- Step 2: Get matched to the nearest licensed techDispatch routes your job to the closest available licensed technician who already carries the common parts for your equipment.
- Step 3: On-site diagnosis with a flat quoteThe tech tests the system, shows you what failed and gives you a written flat-rate price before any work starts.
- Step 4: Approved repair, same visit when possibleMost repairs are finished on the first visit. If a part has to be ordered you get a firm return window, not a maybe.
Servicing Round Rock and Williamson County
Our 78665 coverage zone centres on Round Rock and extends to the surrounding communities listed below. Every technician dispatched into this area is licensed, insured and background-checked, and every job carries a workmanship warranty.
What Round Rock homeowners say
“Two other companies told me I needed a whole new system. These guys found a $210 capacitor. I will never call anyone else.”
— Marcus T., verified Round Rock customer
“Booked a tune-up and got a written report with photos. First time a company has actually documented anything for me.”
— James O., verified Round Rock customer
Round Rock78665 HVAC questions, answered
Do you handle ductless mini-split systems?
Yes. Ductless installations have grown quickly in Texas, particularly in older homes without existing ductwork. We service indoor heads, clean filters and drain lines, check line-set insulation and diagnose communication faults between heads and the outdoor unit.
Do you service commercial and light commercial properties?
Yes. Around Round Rock we handle rooftop packaged units, split systems, VRF/VRV installations and building automation faults for offices, retail, restaurants and multi-tenant buildings, including after-hours scheduling so you are not disrupting trade.
What brands do you service in Round Rock?
All of them. Our 78665 technicians are trained on Carrier, Amana, Daikin, Heil and essentially every other residential brand sold in Texas, including discontinued lines. We keep a broad parts catalogue on the trucks for exactly that reason.
Can you give me a price over the phone?
We can give you realistic ranges — and this page lists the ones homeowners in Round Rock see most often — but a firm price needs eyes on the equipment. Any company that quotes a final number without seeing the unit is usually quoting low to get through the door.
How quickly can a technician get to Round Rock?
For the 78665 service area our target response time is 60-90 minutes from the moment dispatch confirms your address. Real-world timing depends on the day — the first sustained heat or cold snap of the season is always our busiest period — but we hold technicians locally specifically so that window is achievable rather than aspirational.
How much does an HVAC service call cost in 78665?
A diagnostic visit in Round Rock typically runs $75 to $150, and that fee is usually applied toward the repair if you approve the work. Repair prices are quoted as a flat rate before we start, so the number you approve is the number you pay regardless of how long the job takes.
HVAC service near Round Rock, TX
We also cover these Texas communities with the same 24/7 dispatch line.
Need HVAC help in Round Rock 78665?
Emergencies do not keep business hours and neither do we. (866) 548-3173 is answered 24 hours a day, including weekends and holidays.
(866) 548-3173Answered 24 hours a day, 365 days a year