Plumbers in Austin & San Antonio

Plumbers Who Fix the Cause, Not the Symptom

Licensed plumbing repair, replacement and installation for Austin, San Antonio and Central Texas, from a team that has been here since 1999. Around the clock, with the price in writing before any work starts.

Hard Water, Clay Soil and a Lot of Slab Foundations

Plumbing in Central Texas has its own set of problems. The water is hard everywhere in the region, and San Antonio’s Edwards Aquifer supply is harder still, so scale builds up inside water heaters, on fixtures and in the small passages of valves and cartridges. Most houses sit on a slab over clay soil that swells when it rains and shrinks when it does not, and that movement is why so many of the leaks we chase are under the floor. Add a hard freeze every few winters and a summer that runs every irrigation system in town flat out, and the plumbing here works harder than it does most places.

Radiant has been fixing it since 1999, for more than 10,000 homeowners in Austin, San Antonio and the towns around them. Our licensed plumbers handle leak detection, water heaters, repiping, gas lines, water treatment and everything in the kitchen and bathrooms. Drains and sewers have their own crew and their own page. Every job starts with a diagnosis, then a written price you approve, then the work. If a repair is the smarter choice over a replacement, we say so.

  • Licensed in both cities Texas Master Plumber licenses for Austin (M-42438) and San Antonio (M-45619). Every plumber is trained, bonded and background-checked.
  • Local since 1999 Twenty-five-plus years of Central Texas slab leaks, scaled-up water heaters and post-freeze repairs.
  • Home Comfort Guarantee A written quote before any work begins, honored for 72 hours, and a 10% inconvenience refund up to $1,000 if we cannot resolve the issue.
Plumbing

An Annual Plumbing Inspection, Already on the Calendar

The leaks that do the most damage are the ones nobody sees: a supply line sweating inside a wall, a water heater rusting in the attic pan, a shutoff valve that will not close the day you need it. Care Club includes an annual whole-home plumbing safety inspection for $9.99 a month, along with two HVAC tune-ups, no dispatch fees, 5% off repairs and priority scheduling. For bigger jobs like a repipe or a new water heater, financing is available, and every job is backed by the Home Comfort Guarantee.

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Frequently Asked Questions

Are your plumbers licensed in both Austin and San Antonio?

Yes. Radiant holds Texas Master Plumber licenses in Austin (M-42438) and San Antonio (M-45619), and we dispatch from an office in each city, so the plumber who shows up is coming from your side of the region. Every technician is licensed, trained, bonded and background-checked before they set foot in a customer’s home. That matters more in plumbing than people expect: water heater replacements, gas work and repipes are permitted jobs in Texas, and the permit and inspection are only as good as the license behind them.

What plumbing problems come up most in Central Texas homes?

Hard water and slab foundations account for most of our calls. Scale from hard water shortens the life of water heaters, clogs aerators and cartridges, and leaves the white crust you see on shower doors. Slab leaks happen when the clay soil under a house moves with the weather and works on the copper lines set in the concrete. After that it is the usual list: running toilets, dripping faucets, failed water heaters, low pressure, and sprinkler backflow devices that crack in a freeze. We see all of it every week, and the trucks are stocked for it.

Is there an extra charge for a plumber on a night, weekend or holiday?

No. Radiant answers 24/7, and our upfront pricing means no surprise fees, even on weekends and holidays. You get a written price before the work starts, and that is what you pay. Care Club members also get 24/7 emergency service at standard rates with no after-hours trip fees and no dispatch fees at any time. If a pipe bursts at midnight on a Sunday, the only thing you should be thinking about is finding the main shutoff, not doing math on the bill.

What does the Home Comfort Guarantee cover on plumbing work?

You get an accurate quote before any work begins, with no hidden fees, and that quote is honored for 72 hours so you can think it over. The plumber on your job is trained, background-checked and bonded. If we cannot resolve the issue you called about, you receive a 10% inconvenience refund, up to $1,000. On drain clearing and sewer replacement, if drainage backs up or slows afterward, we check it at no charge and make it right if it is related to our work. The full terms are on the guarantee page.

What Our Customers Say

Don't just take our word for it — hear from our satisfied customers

J Jeff Fazio
Jeff Fazio 3 years ago
★★★★★
I had Radiant Plumbing replace my tankless water heater, damaged in the Feb. 2021 snowmageddon storm with a new unit. The process was smooth and professional from start to finish. The plumber, James, was extremely knowledgeable and thoroughly explained my options to me. The cost and time to perform the installation were just as estimated. When he was done, James explained how to maintain the system, what service would be needed and how to perform it, and answered all of my engineering geek questions. It was a thoroughly positive experience. I have used several different plumbers in Austin over the past 15 yrs, but my search is over - I will not hesitate to call Radiant next time and would recommend them unreservedly.

8/9/23 Update: I have subsequently used Radiant for a toilet repair, faucet installation (Danny), and drain work (Ezekiel) and they have continued to impress with knowledgeable, friendly plumbers and quality work.
C Cathy McClaugherty
Cathy McClaugherty 5 years ago
★★★★★
We called Radiant Plumbing after we noticed a water leak in our kitchen. We were in a time crunch and they were able to schedule us quickly, before we left for vacation. They sent their representative, Preston Nichols, and he was excellent to deal with! He was on time, skillful, friendly, and very professional. It turned out to be a problem with our dishwasher but Preston was quick to diagnose it and set our minds at ease. While he was here, we mentioned that our one year-old water heater needed to be flushed. Preston was quick to take care of that, as well, saving us time and money in the process. Radiant charged us almost half the price another plumber quoted us for that service! While Radiant Plumbing isn’t our usual plumber, they gained a new customer. We won’t hesitate to call Radiant again in the future based on our VERY positive experience with them.
S Stefano Rosellini
Stefano Rosellini 6 years ago
★★★★★
Had 3 different systems installed by them approx. 3 years ago for a total of approx $20k. I was quite happy with the install until the year later when they came for a maintenance call and started finding deficiencies in their own install. they wanted extra money to address those deficiencies. Now I am in the process of selling my home and an inspector has found a few items that need to be addressed and they will not even look at the report unless I schedule a $139.00 service call. Very poor customer service.. This company does not stand by their work and would not recommend.

I am revising my review of this business from 1 to 5 stars. After my original review I was contacted by the company's service manager and he made sure that I was taken care off. I had a team of 3 technicians coming to my house to double check the system and make the necessary adjustments. I was very satisfied by their attention to details and professionalism.
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