When your water heater goes cold, you need service that’s fast, professional, and built on real expertise. At Radiant Plumbing & Air Conditioning, we’ve repaired thousands of water heaters across San Antonio—from older tank models in established neighborhoods to modern tankless systems in new homes. Our licensed plumbers arrive with the tools, training, and know-how to diagnose the problem and fix it right the first time.
We understand how San Antonio’s hard water, aging pipes, and long hot seasons affect your system—and we tailor our repairs accordingly. Whether it’s a heating element, a faulty thermostat, or sediment buildup, we’ll walk you through the issue and offer upfront pricing before any work begins.
You shouldn’t have to wait days to get your hot water back. With 24/7 service and a team that shows up ready, Radiant delivers water heater repairs San Antonio homeowners can trust.
Most water heater failures start small—corrosion, sediment buildup, a tired thermostat—and go unnoticed until there’s no hot water. That’s where the Radiant Care Club steps in. As a member, you get an annual plumbing inspection from a licensed expert who knows what to look for inside and around your water heater. We flush sediment, test components, and spot early warning signs before they lead to expensive repairs or full replacement.
Care Club members also skip the dispatch fee, get priority scheduling, and enjoy 10% off most plumbing services—including water heater repairs and replacements. Whether you have a traditional tank model or a tankless system, regular maintenance helps your unit last longer and run more efficiently.
In San Antonio’s hard water environment, that extra care makes all the difference. Join the Care Club and keep the hot water flowing—without the surprise breakdowns.
When your water heater’s on the fritz, you don’t just need a fast fix—you need one that lasts. At Radiant Plumbing & Air Conditioning, every repair is backed by our Home Comfort Guarantee, giving San Antonio homeowners the peace of mind they deserve. That means clear, upfront pricing before work begins, and no hidden fees—ever.
Our licensed, background-checked plumbers know how to repair both traditional and tankless systems safely and correctly, the first time. If something isn’t right after we’ve finished, we’ll come back at no cost to make it right. And if we can’t resolve it to your satisfaction, we’ll offer a 10% inconvenience refund—up to $1,000.
Your comfort, your trust, and your hot water are all protected under the Home Comfort Guarantee. Because at Radiant, doing the job right isn’t just a promise—it’s our standard.
Leaks, clogs, or full system fixes—our licensed San Antonio plumbers are ready 24/7 with trusted, professional service you can count on.
No cool air? No problem. Radiant’s AC experts in San Antonio bring fast repairs, honest answers, and year-round comfort.
Heating issues? Radiant repairs, maintains, and replaces furnaces in San Antonio with trusted, professional service.
Burst pipe or backup at 2 a.m.? Radiant’s emergency plumbers are standing by in San Antonio—ready to fix it, fast and clean.
Hot water troubles? Radiant repairs tank and tankless water heaters across San Antonio with expert care and upfront pricing.
Clogged drain? Gurgling tub? Our San Antonio drain cleaning pros clear it fast—no mess, no chemicals, no stress.
Tired of hard water? Radiant installs and repairs water softeners that protect San Antonio plumbing and keep things running clean.
Radiant Plumbing, Air Conditioning, & Electrical operates across Austin and San Antonio, keeping over 10,000 homeowners happy with home repairs, installations, and maintenance.
Trusted for home services and repairs by thousands of Texans since 1999. Enter your zip code for information about services in your area.
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