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Even in San Marcos, a chilly front can make a dependable furnace the difference between comfort and frustration. Radiant provides comprehensive furnace repair, replacement, and maintenance so your home stays ready for whatever Texas weather brings. Our licensed HVAC technicians service all furnace types, from older units in established neighborhoods to high-efficiency systems in newer homes. We also work on heat pumps and other heating equipment for complete coverage. Whether your furnace is short cycling, making odd noises, or has stopped altogether, we’ll get to the root of the issue and provide clear, upfront solutions. Backed by our Home Comfort Guarantee, San Marcos homeowners count on Radiant for reliable, long-lasting heating service.
The best way to avoid a mid-winter furnace breakdown is through regular maintenance — and that’s what the Radiant Care Club delivers. San Marcos homeowners who join enjoy seasonal heating checkups, priority scheduling, and savings on repairs and replacements. Our team thoroughly inspects and tunes your furnace to extend its lifespan, improve efficiency, and catch issues early. Care Club membership also covers your home’s cooling and plumbing systems, providing all-in-one protection for year-round peace of mind. With predictable costs and trusted local service, the Care Club makes it simple for San Marcos families to safeguard their comfort and keep their furnaces running strong.
At Radiant, every furnace service in San Marcos is backed by our Home Comfort Guarantee. That means straightforward pricing, licensed HVAC professionals, and workmanship you can trust. From minor furnace repairs to full system replacements, our team takes the time to do the job right. If something isn’t right, we’ll make it right. Radiant’s reputation is built on integrity and reliability, and we bring that same standard to every San Marcos home we serve. With us, your furnace isn’t just fixed — your comfort and confidence are protected well into the future.
We proudly service the following cities and neighborhoods across San Antonio, TX:
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Central Texas doesn’t spend months in a deep freeze, but when a blue norther drops temps into the 20s, you feel every draft. That’s when a furnace with a weak igniter, a cracked flame sensor, or a clogged filter shows its cards. Radiant keeps San Marcos homes warm with fast, methodical repairs, whether you’re in a mid-century near The Square, a newer build in Blanco Vista or La Cima, or a student rental off University Drive. Many local systems place air handlers and furnaces in hot attics; we make sure safeties, insulation, and duct sealing are spot-on so you’re not paying to heat the attic first.
Gas furnaces get a full combustion check: ignition sequence, gas pressure, flame signal, and CO safety. For heat pumps, we verify defrost operation and heat strip staging so you’re not stuck with sky-high bills during cold snaps. Uneven rooms? We test static pressure, balance airflow, and inspect ductwork for crushed runs that often happen during roof or attic work. Frequent storms along the I-35 corridor can take out control boards and capacitors where surge protection and proper grounding add reliability.
Light commercial spaces depend on steady heat for employees and guests. We maintain rooftop units, fix economizer controls, and set up seasonal maintenance tune-ups that catch problems before they shut you down on a busy weekend. Every visit ends with clear findings, budget-minded options, and code-compliant workmanship you can trust.
Experiencing other issues in your home? Discover some other Radiant offerings in San Marcos:
Need furnace help now? Expect rapid scheduling, transparent pricing, and clear communication. We keep homes and small businesses warm with integrity and precision. We Answer the Call.
