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Thousands of Austin and San Antonio residents have trusted Radiant Plumbing & Air Conditioning as their full-home service provider for all their maintenance and repair needs. Discover our others services – like air conditioning and plumbing.

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Furnace Repair in San Antonio

Trusted Furnace Repair and Replacement in San Antonio

When a cold north wind rolls through San Antonio, a healthy furnace becomes essential fast. Radiant delivers precise, transparent furnace repair that keeps families warm and small businesses operating smoothly. Our veteran-employed techs know local homes—from historic properties near King William to newer builds in Alamo Ranch—and we service rooftop and back-of-house equipment for boutiques and restaurants around the River Walk, Pearl, and Brooks.

Winters here are generally mild, but sudden Arctic blasts can push temps below freezing and expose weak spots in heating systems. Attic-mounted furnaces, common across San Antonio homes, work hard after long cooling seasons. We check heat exchangers, inducer motors, and ignition systems that can fail after months of inactivity. Rapid temperature swings make airflow and filtration crucial; you can expect us to verify static pressure, clean burners, and recommend media filters that protect both comfort and indoor air quality. For homes with natural gas furnaces, we conduct combustion analysis, confirm CO safety, and test flue draft, especially on homes with recent envelope upgrades or new range hoods that can change pressure. For high-efficiency units, we’ll clear condensate drains that run through hot attics and can clog or freeze during cold snaps. We even handle package units and economizers with code-clean documentation and minimal downtime common for most light commercial spaces in the area.

Need more than heating repair? Explore some of our related San Antonio Services:

From no-heat calls and short-cycling to blower failures and safety shutdowns, Radiant repairs the root cause and backs it with clear communication and upfront pricing. Home or small business, we keep your furnace safe, efficient, and ready for the next cold front. Need dependable furnace repair in San Antonio? We Answer the Call.

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