Serving Texas Since 1999
More than 10,000 Austin and San Antonio homeowners have called us, many of them more than once.
Plumbing, HVAC & Electrical
For Plumbing, HVAC & Electrical Services
- Just Call Radiant -
One licensed team for plumbing, heating, cooling and drains in Austin and San Antonio, plus electrical in Austin. Available 24/7, thousands of 5-star reviews, with the price approved before any work begins.
No Surprise Fees
Upfront pricing you approve before we start. Nights, weekends and holidays included.
Plumbing, Drains, HVAC & Electrical
Every system in your home, one number to call.
Repairs, installations and maintenance for the things that keep a Central Texas house livable, from the AC in August to the water heater in January.
Heating & Air Conditioning
AC repair, replacement and tune-ups built for 100-degree summers, plus furnaces, heat pumps and ductless systems for the cold snaps in between.
Explore HVACPlumbing
Leaks, water heaters, repiping, fixtures, gas lines and the slab leaks that Central Texas clay soil is known for. Licensed master plumbers in both cities.
Explore PlumbingDrains & Sewers
Clog clearing, hydrojetting, camera inspection, sewer repair and replacement, backed by our no-backup promise on drain clearing and sewer work.
Explore Sewer & DrainElectrical (Austin)
Panel upgrades, outlets and switches, lighting, ceiling fans, EV chargers, generators and repairs, from licensed electricians serving the Austin area.
Explore ElectricalClean Air & Water
Whole-home filtration, purifiers, dehumidifiers, duct cleaning and sealing, for cedar season, humid summers and dust that never seems to settle.
Breathe EasierWater Heaters
Tank and tankless water heaters, softeners and filtration. Hard water is the rule across Central Texas, and it shortens the life of everything it touches.
Explore Water HeatersCurrent Specials
Offers for Austin and San Antonio homes, updated by season.
Home Comfort Guarantee
A quote that holds, technicians you can trust, and work we stand behind.
Most of the stress in a home repair is not the repair. It is wondering whether the number will change, whether the person at your door is who they say they are, and what happens if the fix does not hold. Our Home Comfort Guarantee answers all three in writing.
- Accurate Quote, Honored for 72 Hours You get the price before any work begins, with no hidden fees, and it holds for 72 hours while you decide.
- Trained, Background-Checked, Bonded Every technician we send is trained, background-checked and bonded, so your home is protected while we are in it.
- 100% Satisfaction If we cannot resolve the issue, we offer a 10% inconvenience refund, up to $1,000.
Why Homeowners Choose Radiant
Two local offices, one standard, and 25+ years of showing up.
Local in Both Cities
An Austin office and a San Antonio office, each with its own licensed plumbers and HVAC technicians who know the housing stock and the water.
Recognized Work
Best of Austin 2025 from The Austin Chronicle, the Inc. 5000 list, and Best Places to Work from the Austin Business Journal.
Part of the Community
We support local charities, food banks and community projects in both cities, year-round, not just at the holidays.
Recognized across Central Texas
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Best of Austin 2025 The Austin Chronicle
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Inc. 5000 Fastest-Growing Companies · Texas Edition
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Best Places to Work Austin Business Journal
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Fast 50 Austin Business Journal
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Top Workplaces Austin American-Statesman
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Best of the Best Austin American-Statesman
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Ethics in Business Finalist Recognize Good
What Austin and San Antonio Homeowners Say
Don't just take our word for it — hear from our satisfied customers
★★★★★
Our 18 year old HVAC system finally gave out this past week, so we reached out to Radiant to see what could be done. They sent a tech out named Bryan the same day, and he did a great job looking over the entire HVAC system. He was friendly and helpful in explaining everything that he saw, and our options moving forward. We decided to replace the entire system, so we met with Jacob (same day thankfully) to find the best HVAC system for our needs. Jacob was friendly, professional, and did a great job explaining the different options on offer. Radiant was able to set-up next day install, which was much appreciated, because the temps were still going to be cold in the coming days.
The install team consisted of Carlos and Pablo, who were very courteous and professional, and were kind enough to answer any questions I had regarding the install. They did a great job installing our new HVAC system, and were tidy which is always appreciated! Before they left, they explained everything that had been done, and showed me photos of the work.
Our entire experience from start to finish was great. I appreciate that they send photos of who is coming to your home too. Friendly, kind, professional team members, and good work all the way around. Thanks Radiant!
The install team consisted of Carlos and Pablo, who were very courteous and professional, and were kind enough to answer any questions I had regarding the install. They did a great job installing our new HVAC system, and were tidy which is always appreciated! Before they left, they explained everything that had been done, and showed me photos of the work.
Our entire experience from start to finish was great. I appreciate that they send photos of who is coming to your home too. Friendly, kind, professional team members, and good work all the way around. Thanks Radiant!
★★★★★
This is the first time I’ve used radiant my neighbor recommended them…. I called them today and they set me up an appointment on the same day. I was totally shocked at that and the service call was only $39!!…. Highly recommend them Danielle showed up and he was a great guy and he put up with all my wishy-washiness and I had to hurry him because I was heading to church and he got caught in a lot of traffic getting here he even would’ve installed the part that broke but I Didn’t have the time tonight….. He was patient with me and just told me to call the office first thing in the morning and get a service call set up…. Thank you so much Radiant!!….
With another cold front coming in tomorrow now I just hope they can get me scheduled for a separate call tomorrow but I have a feeling they will. They are such a great company!!😊😊
With another cold front coming in tomorrow now I just hope they can get me scheduled for a separate call tomorrow but I have a feeling they will. They are such a great company!!😊😊
★★★★★
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.
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.
Care Club
Two HVAC tune-ups, a plumbing inspection, and no dispatch fees. $9.99 a month.
Maintenance that finds the small problem in spring instead of the big one in August.
Care Club members get two annual HVAC tune-ups on an enrolled system, an annual whole-home plumbing safety inspection, priority scheduling, 5% off repairs, member-only deals, and no dispatch fees, ever, including after-hours emergencies at standard rates.
- Two HVAC tune-ups a year
- Annual plumbing safety inspection
- No dispatch fees, ever
- 5% off repairs
- Priority service
Questions Homeowners Ask Us
Which areas does Radiant serve?
We run two offices. The Austin team covers Austin and the communities around it, including Round Rock, Cedar Park, Leander, Georgetown, Pflugerville, Hutto, Kyle, Buda, San Marcos, Dripping Springs and Manor. The San Antonio team covers San Antonio, Boerne, Helotes, Schertz, Cibolo, Converse, Universal City, New Braunfels and Seguin.
Both offices offer plumbing, heating, air conditioning and drain service. If you are not sure which side of the line you fall on, call and we will sort it out. See the full list on our service area page.
Do you offer electrical service in San Antonio?
Not yet. Our licensed electricians serve the Austin area only. In San Antonio we handle plumbing, drains, heating and air conditioning, and that includes the electrical work that is part of those systems, such as a condenser disconnect or a water heater circuit, where the trade license covers it.
If you are in San Antonio and need a panel upgrade or new circuits, we will tell you that plainly rather than send someone who cannot do the job.
What does it cost to call after hours or on a holiday?
The same as it costs on a weekday afternoon. We are available 24/7, including nights, weekends and holidays, and our pricing is upfront with no surprise fees regardless of when you call. You will see the price before the work starts, and you approve it.
That matters most for the calls that cannot wait: a burst pipe, a sewer backup, an AC that quits during a heat advisory. For those, use our emergency plumbing or emergency HVAC pages, or just call.
What is the Home Comfort Guarantee?
It is our written promise on every job. You get an accurate quote before work begins, with no hidden fees, and it is honored for 72 hours. The technician at your door is trained, background-checked and bonded. If you are not satisfied and we cannot resolve the issue, we offer a 10% inconvenience refund up to $1,000.
HVAC installations over $3,000 are quality-reviewed by a manager, and drain clearing and sewer replacements carry a no-backup promise. The full terms, including exclusions, are on the guarantee page.
Can I finance a repair or a new system?
Yes. We offer financing through Service Finance Company, LLC, including a no-interest, no-payments option for six months and longer fixed-rate terms, all subject to credit approval. Applying takes a few minutes and does not commit you to the work.
Financing is most often used for AC replacements, water heaters, sewer line work and repipes, the jobs that rarely arrive at a convenient moment. Details and disclosures are on our financing page, and our current specials can be combined where the offer allows.
