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A clogged drain isn’t just an inconvenience, it’s a disruption to your entire home. At Radiant Plumbing & Air Conditioning, we bring decades of experience to solving tough drain problems for San Marcos families. From kitchen sinks that won’t drain to main sewer line blockages, our licensed plumbers know how to clear clogs quickly and prevent them from coming back. We use proven methods and modern equipment to tackle even the most stubborn blockages, all while keeping your home clean and your budget protected with upfront pricing. Backed by our 24-hour availability and Home Comfort Guarantee, Radiant makes it easy to get your drains flowing freely again—fast, reliable, and done right the first time.
Most drain disasters don’t happen overnight, they build up slowly from years of hidden buildup and neglect. With Radiant’s Care Club, San Marcos homeowners get proactive plumbing protection that keeps drains clear and water flowing. Our annual plumbing check includes inspecting fixtures, testing shut-off valves, and looking for early signs of corrosion or blockages, so we can fix problems before they turn into messy backups. Members also enjoy no dispatch fees, 10% off repairs, and priority scheduling for total peace of mind. With Care Club, you’re not just clearing today’s clogs – you’re preventing tomorrow’s emergencies.
At Radiant Plumbing & Air Conditioning, clearing your drains is just the start – we back every job with our Home Comfort Guarantee. That means you’ll always get upfront pricing, licensed technicians who respect your home, and solutions designed to last. Whether it’s a simple clog or a stubborn sewer line backup, we promise to make it right the first time, or we’ll be back to fix it. For San Marcos homeowners, that’s more than peace of mind – it’s the Radiant way of doing business: dependable, honest, and guaranteed.
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:
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Slow drains turn into backups fast in San Marcos, especially after a heavy downpour. Between clay/cast-iron laterals in older neighborhoods and long PVC runs in areas like La Cima and Blanco Vista, each home has its own weak spots; grease caps from busy kitchens, hair and soap scale in secondary lines, or tree roots seeking moisture along the main lines are some. Radiant clears drains the right way. We start with targeted diagnostics (cleanout access, trap checks, and a sewer camera inspection when needed), so we’re fixing the cause, not just the symptom.
For tough lines, we use professional augers to restore flow and hydrojetting to scrub pipe walls 360°, removing sludge, scale, and root fuzz that “punch-through” cleanings leave behind. In “Flash Flood Alley,” storm surges can wash dirt into low spots in your sewer line. Our drain and sewer camera shows the exact trouble spot, and then we lay out repair choices that match your budget. Upstairs bathrooms and AC drain lines in the attic are common trouble areas—we clear the algae, install clean drain traps, and add safety switches to stop ceiling leaks before they happen.
Light commercial clients count on us for grease line maintenance, floor drain recovery, and after-hours service that keeps doors open. Every visit includes clearly-explained findings, photos, and preventive tips (enzyme dosing, mesh strainers, water-softener maintenance) to extend the time between calls.
Radiant does more than drains and sewers. Explore some of our related San Marcos services:
Need a drain cleared today? Expect fast arrivals, transparent pricing, and clean, code-compliant work from licensed pros who respect your home. From Spring Lake to the San Marcos River, we keep your pipes moving with precision and pride. We Answer the Call.
