Get started with our hassle-free online booking or call today at 210-294-6703.
In San Antonio, cold fronts may come and go, but when the temperature drops, a reliable furnace becomes essential. Radiant delivers complete furnace services — repair, replacement, and maintenance — backed by professionalism and integrity. Our licensed HVAC technicians are trained to work on every system, from older gas furnaces to advanced high-efficiency models, as well as heat pumps and other heating equipment. Whether your system is blowing cold air, shutting down unexpectedly, or simply overdue for service, we’ll provide clear answers and lasting solutions. With 24/7 availability and our Home Comfort Guarantee, San Antonio families know Radiant is the trusted choice for dependable heating.
The most reliable furnace is one that’s cared for regularly. That’s why so many San Antonio homeowners choose the Radiant Care Club. Membership includes seasonal heating tune-ups, priority scheduling, and savings on repairs and replacements. Our technicians carefully inspect and maintain your furnace to improve efficiency, extend its lifespan, and reduce the risk of sudden failures. And because the Care Club also covers your cooling and plumbing systems, it’s complete protection for your whole home. With predictable costs and proactive service, the Care Club helps San Antonio families safeguard their comfort and avoid costly surprises when temperatures drop.
Every furnace repair, replacement, and maintenance service Radiant provides in San Antonio is backed by our Home Comfort Guarantee. That means straightforward pricing, licensed professionals, and workmanship that holds up under daily use. Whether it’s an emergency call, a seasonal tune-up, or a full system replacement, we take pride in doing the job right. If something isn’t right, we’ll make it right. San Antonio homeowners turn to Radiant not just for restored heat, but for the confidence that comes with service built on reliability, honor, and care. With us, your furnace isn’t just fixed — your comfort is protected for the seasons ahead.
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.
We proudly service the following cities and neighborhoods across San Antonio, TX:
Not seeing your area? Give us a call at 210-294-6703
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.
