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Furnace Repair Services in San Marcos, TX

HVAC Service Since 1996 with Same-Day Furnace Repair Availability

We’ve provided HVAC and plumbing services to residential and commercial customers since 1996. Our continuously trained technicians and deep service team diagnose furnace problems and provide upfront pricing before work begins.

Call us at (512) 580-8837 for furnace repair and you’ll get:

  • Reliable People: We continuously train our repair technicians and provide trustworthy assessments of furnace problems.
  • Reliable Scheduling: With same-day service availability and 2-hour scheduling windows, you can request an appointment that fits your day.
  • Reliable Relationships: Many of our employees stay for 10 years or longer, so you may hear a familiar voice on the phone or see a familiar face at your door.

Furnace Repair Costs in San Marcos

A furnace diagnosis identifies the cause of the problem before we recommend a repair.

Factors that can affect the final repair price include:

  • What’s wrong with the furnace: Not all furnace repairs are equal. The failed component, replacement parts, and required labor time affect the price.
  • Your furnace warranty: If your furnace is covered under an applicable warranty, you may not have to pay as much for the repair.
  • Repair or replacement: The condition of the system and scope of the failure help determine whether repairing the furnace or considering replacement is the more appropriate option. Financing options are available for eligible customers managing larger HVAC expenses.

Call us at (512) 580-8837 or reach out here online to get a free estimate and schedule your furnace service today! 

  • "3 years of frustration cured in under an hour!"
    They were able to diagnose the root cause and fix an issue that had been a nagging problem ever since the HVAC was installed by another company.
    - Chance S.
  • "The installation came with a 10 year parts and maintenance, so this is all being done free of charge."
    We used them to install a brand new a/c unit about 4 years ago and just had our first issue with it this week. I called yesterday, and they had someone out first thing this morning to fix it.
    - Dave N.
  • "Tom was very honest, informative and professional."
    I would definitely recommend this company to anyone.
    - Daveed O.
  • "Their technicians are amazing and wonderful staff."
    Our system stopped cooling and reliable was quick to respond. They easily diagnosed the issue and took care of it immediately. Our safe T sensor kept tripping they cleaned the drain and fixed the sensor.
    - Erik G.
  • "I would recommend them to anyone."
    Knowing their quality of work, when I needed work on my own home I knew who to call.
    - James B.
  • "I am super grateful."
    Andy was extremely polite, helpful, and transparent. Reliable Air was able to accommodate my crazy work schedule to service my a/c unit.
    - Jennifer S.
  • "I highly recommend their service."
    Edgar explained in detail what he would be doing, along with the issue he found in terms that any home owner would understand.
    - Steve S.
  • "They will mail you a reminder that it’s time to have it done again and that is very helpful."
    Reliable Air off always does an excellent job of kit cleaning and servicing my air conditioner and heater.
    - Connie D.

Common Furnace Repairs & Example Costs

These figures are examples. An inspection is necessary for an accurate recommendation and upfront price.

Common repair cost examples include:

  • Replacing a defective blower motor: $450 to $1,200+
  • Replacing a bad control board: $300 to $400+
  • Repairing a faulty ignition system: $100 to $300+
  • Fixing a broken flame sensor: $100 to $250+
  • Repairing or replacing a heat exchanger: $100 to $300+ for repairs and $1,200+ for full replacement

Our article, How Much Does a Furnace Repair Cost in San Marcos?, provides additional information about potential repair expenses.

Get an Accurate Furnace Repair Cost

We can come to your home, inspect the furnace, and identify the problem for $99*.

*The diagnostic fee applies only during normal business hours. The diagnostic fee increases to $119 outside normal business hours.

Our Furnace Repair Process

  1. Schedule Your Repair: Use our online appointment scheduler to schedule your furnace repair service, or call us at (512) 580-8837. We offer 2-hour scheduling windows and can send you a confirmation, so you’ll know when we’re arriving.
  2. Receive an Arrival Notice: Your service technician can call you when they’re approximately 30 minutes away. This way, you won’t have to wait around wondering when they’ll arrive.
  3. Review Upfront Pricing: Your technician can inspect the furnace, explain what needs attention, and provide transparent pricing for your review before work begins.
  4. Complete the Approved Work: Once you’ve signed off on the quote, your technician can get straight to work. They can also explain how long the service is expected to take.
  5. Share Your Feedback: After the job is complete, we may request feedback about your experience. We provide a 100% satisfaction guarantee.

The Contact us page lets you request a furnace assessment, receive upfront repair pricing, or discuss whether repair or replacement is appropriate for your system. Same-day availability, 2-hour scheduling windows, and financing options for eligible customers help reduce uncertainty about the next step.

Call us at (512) 580-8837 or Contact Us to schedule furnace service.

Why Choose Us?

As times get tough, other companies cut corners. But we decided to stay reliable for over 30 years. Call us and you'll get:
  • Reliable Relationships
    Many of our employees stay for 10+ years. So you'll always hear a familiar voice on the phone or see a familiar face at your door.
  • Reliable Scheduling
    With same-day service and 2-hour scheduling windows, you'll get service at a time that's convenient for you.
  • Reliable People
    Since we constantly train our employees, you can be 100% confident that your job will be done right—the first time.
Ready? Y'all Give Us a Ring! (512) 580-8837

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