What are the signs that my furnace needs repair?

Signs your furnace may need repair include unusual noises, insufficient or uneven heating, frequent cycling, rising energy bills, or a system that struggles to maintain set temperatures.

How often should I have my furnace serviced?

Furnaces should be professionally serviced at least once per year, ideally before the heating season begins, to ensure safe and reliable operation.

Can I repair my furnace myself?

Homeowners can handle minor tasks like replacing filters, but furnace repairs involving electrical components, gas connections, or internal parts should always be handled by licensed professionals.

What is the average cost of furnace repair?

Furnace repair costs vary based on the issue and required parts. Many repairs range from about $100 to $1,000, though complex issues may cost more.

How long does a furnace repair take?

Most furnace repairs can be completed within 1 to 3 hours. More involved issues may take longer depending on diagnosis and part availability.

What should I do if my furnace won't turn on?

Start by checking thermostat settings, confirming power to the unit, and inspecting the circuit breaker. If the furnace still won’t start, contact a professional technician for service.

How can I prevent future furnace problems with Sigma Air Heating & Cooling?

Sigma Air Heating & Cooling offers preventative maintenance plans designed to keep your furnace running efficiently year-round. Routine inspections help prevent unexpected repairs, extend system lifespan, and improve reliability.

How quickly can Sigma Air Heating & Cooling repair my furnace?

Same-day or next-day furnace repair is available with Sigma Air Heating & Cooling, especially during colder months when fast response is critical for comfort and safety.

Is Sigma Air Heating & Cooling’s furnace repair service cost-effective?

Yes. Sigma Air Heating & Cooling offers transparent, competitive pricing with no hidden fees. Through the Sigma Savings Promise, any written furnace repair quote that is 10% lower within 30 days will be matched.

What types of furnace problems does Sigma Air Heating & Cooling fix?

Sigma Air Heating & Cooling repairs a wide range of furnace issues, including dirty or clogged filters, ignition failures, thermostat malfunctions, blower motor problems, and cracked heat exchangers. Qualified technicians diagnose and repair issues promptly.

Furnace Maintenance

Furnace Maintenance Services in San Antonio, TX

Winter-Ready, Worry-Free

Sigma Air Heating & Cooling has been serving San Antonio homes and commercial premises since 1994, providing professional furnace tune-ups that actually work. Our insured technicians tune each component, cut power bills, and prevent breakages even before they happen. Residential or commercial, our furnace maintenance services in San Antonio, TX, have you covered. Stay warm, save money, call now!

Setting the Gold Standard for Furnace Care in San Antonio

Calibrate. Conserve. Celebrate Warmth.

At Sigma Air Heating & Cooling, we don’t just check boxes; we provide the best furnace maintenance in the industry that ensures San Antonio runs smoothly. Our furnace maintenance experts in San Antonio, TX, are skilled and experienced in handling all residential and commercial heating needs, ensuring furnaces perform optimally, reducing energy bills, and avoiding cold surprises.

As a results-driven company, we’re your trusted partner for reliable warmth. Our professional, hassle-free furnace tune-up in San Antonio, TX, means one less worry for your home or business. Stay cozy, stay efficient, stay ahead!

Sigma Air Heating and Cooling: Keeping San Antonio Warm Since 1994

Over the last 30 years, Sigma Air Heating and Cooling has been the reliable name in furnace care, providing reliability, savings, and the ultimate peace of mind through our special Sigma Savings promise. We support all of our services with our unbeatable guarantee: we will beat any written price by 10 percent within the next 30 days.

It is our promise of transparency, trust, and putting you first. We ensure your furnace is serviced to an excellent standard at a reasonable cost, whether it’s routine servicing or a minor breakdown. Count on us for same-day service, energy-smart solutions, and a heating system that works when you need it most. Experience the furnace maintenance in San Antonio, TX without breaking the bank!

What Makes Our Furnace Maintenance Services in San Antonio, TX MVP?

Don’t settle for cold nights and costly surprises. Call our furnace maintenance service in San Antonio, TX, and see why savvy homeowners choose us:

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24/7 Emergency Rescue

Furnace quit at 2 AM? We’re on it. Round-the-clock service means you’re never left in the cold.

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30+ Years of Proven Warmth

Three decades of keeping San Antonio cozy, experience, and trust you can feel.

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Your Local Heating Heroes

We are fully licensed, locally trusted, and just around the corner when you need us most.

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Same-Day Solutions

We promise no waiting, no freezing, just fast service to get your heat back on today.

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Zero Hidden Fees

We provide transparent pricing and honest answers. What we quote is what you pay.

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Proactive Protection Plans

We stop problems before they start. Our maintenance keeps breakdowns at bay and your bills low.

Need Furnace Maintenance in San Antonio, TX? Here’s How to Reach Us

Need fast furnace maintenance in San Antonio? Call now for expert diagnostics, reliable fixes, and warm comfort restored without delay.

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Call Us:

(210) 610.2332
Speak directly with a local HVAC expert. No call centers. No waiting games.

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Email Us:

info@sigmaairtx.com
Send us your issue, and we’ll get back to you promptly with answers or a scheduled service time.

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Visit Us (By Appointment):

5315 Jackwood Drive, San Antonio, TX 78238

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Request Service Online:

Want to skip the phone call? Schedule service or request a free quote.
We’ll confirm your appointment and be on our way.

Is Your Furnace Ready for Winter’s Worst?

We Bring Swift Solutions with Instant Warmth.

A small furnace issue today becomes a frozen nightmare tomorrow. At Sigma Air Heating & Cooling, we catch problems early and fix them fast, keeping your home warm when it matters most.

Dirty Filters & Blocked Vents? We Clear the Path.

Clogged filters choke your furnace, causing overheating, short-cycling, and sky-high energy bills. We restore proper airflow for balanced, efficient heat throughout your home.

Ignition & Pilot Light Failures? We Reignite Reliability.

Faulty igniters or extinguished pilot lights mean no heat, period. Our technicians clean, repair, and restore your ignition system for dependable warmth all season.

Thermostat Acting Up? We Recalibrate Comfort.

Dead batteries or broken thermostats leave you guessing. We install, wire, and calibrate for precise temperature control every single time.

Blower Motor Struggling? We Restore the Flow.

Weak airflow or strange noises signal trouble with the blower. We diagnose and repair motor issues before they strand you in the cold.

Short Cycling Driving You Crazy? We Stop the Madness.

Rapid on-off cycles waste energy and damage components. We fix overheating, limit switches, and airflow problems for smooth, efficient operation.

Quick Answers to Common Questions

Can a Faulty Thermostat Really Affect My Furnace’s Lifespan?

Absolutely. If your thermostat is poorly calibrated or has wiring issues, it sends “false starts” to your furnace. This constant stopping and starting creates unnecessary wear and tear on the ignition system. We calibrate your thermostat to ensure it communicates flawlessly with your HVAC system, extending the life of your equipment.

Is It Dangerous to Ignore a Pilot Light or Ignition Issue?

Yes. In addition to a lack of heat, a non-working ignition system may cause delayed ignition (barely a large boomerang when it finally ignites) or even gas buildup. All safety elements, including the lights, sensors, etc., are checked by our insured technicians to ensure you can get a good night’s sleep, knowing your home is safe and warm.

The Furnace Is Running, so Why Do I Need a Maintenance Check-up?

Think of it like an oil change for your car. Even if it’s running, dirt buildup on burners or a struggling blower motor can quietly increase your energy bills by 15-20%. Our maintenance prevents “Short Cycling,” where your system works twice as hard for half the warmth, saving you from an expensive mid-winter breakdown.

Why Is My Furnace Making Strange Noises or ‘Short Cycling’ on and off?

This is usually a cry for help. This is usually due to a filter blockage or a faulty limit switch, which causes heating, and shuts it off as a safety measure. We do not simply fix the noise; we solve the cause of the noise, and have you running without the threat of a cracked heat exchanger.

Free Tune-up!