Now providing service in San Antonio!

San Antonio Plumbing & HVAC Services

Radiant owners Brad & Sarah Casebier in San Antonio

World-Class Service With Texas Heart

Founded by husband and wife duo, Brad and Sarah Casebier, Radiant San Antonio is The River City’s finest in plumbing and HVAC. In 2021, Radiant acquired San Antonio’s Schmidt Mechanical Group, upholding its existing excellence in HVAC service and, most recently, adding plumbing to the list of service offerings.  Our vast service area covers everything encapsulated by the 1604 Loop such as Converse, Alamo Heights, and Castle Hills as well as beyond like our Northeast neighbors in Schertz, New Braunfels, and San Marcos. Over the years we’ve been able to serve countless of Texas residents, and just as many have been kind enough to rate our performance at 5 stars. Today, we’re proud to hold a near-perfect rating with award-winning recognition. We would love nothing more than the opportunity to prove ourselves to you too! For all your plumbing, HVAC, and drain service needs, just call Radiant.

Local Home Service Options

At Radiant San Antonio, our main priority is to serve our local communities, and serve them well. That’s why we offer an array of home services to meet your every need. From the heart of San Antonio and outward towards areas such as Leon Valley and Kirby, you’ll see our eye-catching trucks on their way to serve your neighbors. Whether it’s leak detection, installation for your brand new AC unit, or a water heater flush, just call Radiant!


Water heaters, toilets, pipes & fittings: if it conveys fluid, our technicians can tackle it. Call today for anything from plumbing maintenance and repair to installation.

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Your HVAC unit should stand the test of temperature changes!  We’ll ensure your home enjoys comfort for every season. Then you’ll say: “Ah, that’s more like it!”

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Some plumbing problems occur deep in the bowels of your home. Don’t sweat it! Our drain technicians are ready to get down and dirty to solve your problem today.


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5 Star Reviews

Our Record Speaks For Itself

Our record is stellar. We’re proud to don a 5-star rating on all major platforms, with hundreds of detailed reviews in tow. There’s a reason for that. Our entire company pulls in one direction to ensure you, the customer, has a 5 star experience. Your satisfaction is our top priority, and we’ll do whatever it takes to make your day. If it sounds too good to be true, just ask around!

Radiant San Antonio service area
We Travel Far And Wide
San Antonio Service Area

When we say we serve the entire San Antonio community, we mean it. As you can see, our service area spans from as far South as Somerset, to as far North as Timberwood Park, and everywhere in between. When you’re in the middle of a plumbing emergency, rest assured, you’re never far from a Radiant truck. The same goes for AC troubles in the middle of Summer. Relief from an expert Radiant technician is just a phone call away. Our headquarters is strategically located in the heart of San Antonio to serve as a launching pad for running calls. Unsure whether or not you fall within the scope of our service area? Just give us a call and you’ll have your answer in a matter of seconds.