HVAC Repair in San Marcos, TX78666
Arctic Air Heating & Cooling dispatches licensed, insured heating and air conditioning technicians toSan Marcos and the 78666 ZIP code 24 hours a day, 7 days a week. Target response time in this service zone: 60-90 minutes.
Serving San Marcos and the wider Hays County area, our crews carry the common failure parts on the truck — capacitors, contactors, igniters, flame sensors, motors and filters — so the first visit is usually the last one.
Talk to a live dispatcher in San Marcos
Serving 78666 and Hays County — no phone trees, no callback waiting.
- No overtime charges for evenings, weekends or holidays
- Manufacturer-trained on Rheem, Mitsubishi Electric and Heil equipment
- Free second opinion on any replacement quote over $3,000
- Upfront honesty: if it is a $40 capacitor, we say so
★★★★★4.7 average · 222 verified reviews
- Licensed & Insured Technicians
- Background-Checked Crews
- Upfront Flat-Rate Pricing
- Same-Day & Next-Day Service
- No Overtime Charges
- All Work Warrantied
The San Marcos78666 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.
Heat pump stuck blowing cold air in heating mode
Furnace lights then shuts down after a few seconds
No cool air, or air that is barely cooler than the room
Water pooling around the indoor unit or ceiling stains
Short cycling — on and off every few minutes
Frozen evaporator coil or ice on the refrigerant lines
Heating and air conditioning service built around San Marcos
Most of the work we do in San Marcos starts the same way: the system is running but the house is not comfortable. Before we replace anything, we measure airflow, static pressure and temperatures so you are paying for the actual fault.
A large share of the equipment we service in San Marcos was installed by a builder to a minimum spec. That usually means an undersized return, a cheap filter rack and a condenser sitting close to a wall.
Because Texas runs high-capacity split air conditioning with gas or electric heat, the transition between seasons is when we see the most emergency calls — equipment that sat unused for months.
Typical San Marcos 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 San Marcos, TX and the wider South-Central region. Your flat-rate quote is confirmed on site before any work begins.
Services available in 78666
Residential and light commercial, all major brands, all hours.
Air Conditioning Repair in San Marcos
Diagnosis and repair for central air conditioners, heat pumps in cooling mode, ductless mini-splits and packaged rooftop units.
Furnace Repair in San Marcos
Gas, propane, oil and electric furnace troubleshooting and repair.
HVAC Installation & Replacement in San Marcos
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 San Marcos
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 San Marcos
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 San Marcos
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 San Marcos
Seasonal precision tune-ups that catch failing components before they strand you.
Commercial HVAC Service in San Marcos
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 San Marcos and Hays County
Our 78666 coverage zone centres on San Marcos 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 San Marcos homeowners say
“The technician showed me photos of the corroded coil and explained the whole thing without talking down to me.”
— Robert L., verified San Marcos customer
“Flat rate quote before they started and that is exactly what I paid. No surprise line items at the end.”
— Priya S., verified San Marcos customer
San Marcos78666 HVAC questions, answered
What brands do you service in San Marcos?
All of them. Our 78666 technicians are trained on Rheem, Mitsubishi Electric, Heil, Goodman 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.
How much does an HVAC service call cost in 78666?
A diagnostic visit in San Marcos 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.
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.
How often should I change my filter in 78666?
Monthly inspection and replacement every 60 to 90 days is the baseline. Homes in San Marcos with pets, ongoing construction nearby, or a high-MERV filter in an undersized return should move to monthly changes. A loaded filter is the single most common cause of frozen coils and failed blower motors.
What does a new system cost in San Marcos?
A complete residential replacement in the 78666 area generally lands between $6,000 and $13,000 installed, depending on capacity, efficiency rating and how much ductwork has to be modified. We always perform a Manual J load calculation first, because an oversized unit costs more to buy and runs worse than a correctly sized one.
Do you offer maintenance plans?
We do. A two-visit plan in Texas covers a spring cooling inspection and an autumn heating inspection, priority scheduling during peak weeks, discounted repairs and no diagnostic fee. Members rarely end up on the emergency list.
HVAC service near San Marcos, TX
We also cover these Texas communities with the same 24/7 dispatch line.
Need HVAC help in San Marcos 78666?
Do not wait until the house is unbearable. Call (866) 548-3173, get a real diagnosis, and get a written price before any work starts.
(866) 548-3173Answered 24 hours a day, 365 days a year