Plumbing & HVAC in San Antonio, TX

Plumbing and HVAC for San Antonio, Around the Clock

Licensed plumbers and HVAC technicians dispatched from our office on Wye Drive to homes across Bexar County and the surrounding cities. The price is agreed before the work starts, and it does not change on a weekend.

What a San Antonio House Asks of Its Systems

Two things define home service in this city: the water and the heat. San Antonio draws its water from the Edwards Aquifer through limestone, and it comes out of the tap among the hardest in Texas. That scale coats water heater elements, clogs aerators, shortens the life of dishwashers and leaves the white crust on every shower door in Bexar County. Then there is a cooling season that starts in April and does not let go until October, with Gulf humidity that makes the air conditioner work harder than the thermometer suggests. Add expansive soils that shift slabs and the pipes under them, and an occasional freeze like February 2021, and you have a housing stock that keeps plumbers and HVAC technicians busy all year.

Radiant has served San Antonio since 1999. Our office is at 10927 Wye Dr. on the northeast side, and our trucks cover the whole metro: the historic homes of Monte Vista, King William and Alamo Heights, the 1970s and 80s neighborhoods around Converse and Universal City, the big two-story subdivisions of Stone Oak, the newer builds out toward Alamo Ranch and Helotes, and the growth corridor up I-35 through Schertz, Cibolo and New Braunfels, with Boerne to the northwest and Seguin to the east. Schmidt Mechanical, a longtime San Antonio HVAC company, is now part of Radiant as well.

In San Antonio we do two trades and do them fully: plumbing, including water softeners and water heaters, and HVAC, meaning cooling, heating and indoor air. Every job runs on the same rules: a written price you approve first, honored for 72 hours, backed by the Home Comfort Guarantee, with no surprise fees on nights, weekends or holidays.

  • Based on Wye Drive 10927 Wye Dr., Suite 102, on the northeast side. Plumbing and HVAC crews dispatched from the same office, 24 hours a day.
  • Licensed in San Antonio Master Plumbing license M-45619 and HVAC license TACLB138286E. Technicians are licensed, background-checked, trained and bonded.
  • 10,000+ homeowners served More than 25 years and thousands of five-star reviews across Austin and San Antonio.
San Antonio
Care Club: Built for Hard Water and Long Summers

Care Club: Built for Hard Water and Long Summers

Two systems cause most of the expensive surprises in a San Antonio house: the air conditioner, which runs seven months without a break, and the plumbing, which the Edwards Aquifer works on every day. Care Club covers both for $9.99 a month: two annual HVAC tune-ups on an enrolled system, an annual whole-home plumbing safety inspection, 5% off repairs, priority service, member-exclusive deals and no dispatch fees, ever. When something fails at night or on a holiday, members get 24/7 emergency service at standard rates with no after-hours trip fee. For bigger jobs, financing through Service Finance Company is available, subject to credit approval.

See Care Club

Frequently Asked Questions

How far outside San Antonio does Radiant go?

Our San Antonio trucks cover Bexar County and the cities around it: Boerne and Helotes to the northwest, Converse, Universal City, Schertz and Cibolo on the northeast side, New Braunfels up the I-35 corridor, and Seguin to the east. Within San Antonio itself that means everything from the historic neighborhoods near downtown to Stone Oak, Alamo Ranch and the Medical Center area. If your town is not on that list, call anyway; we serve plenty of addresses just past the edges. Each community has its own page on our San Antonio service area listing, with notes on the homes and the calls we get there.

What licenses does Radiant hold in San Antonio, and what trades do you cover here?

Our San Antonio office holds Texas Master Plumbing license M-45619 and Texas HVAC license TACLB138286E, and both numbers appear on every quote. In San Antonio we provide plumbing, drains and sewers, water heaters, water treatment, cooling, heating and indoor air quality. Electrical work is handled by our Austin office and is offered in the Austin area only. Every technician who comes to your home is licensed, trained, background-checked and bonded, and the work is covered by our Home Comfort Guarantee: an accurate quote before work begins, honored for 72 hours, with no hidden fees.

What happens if my AC quits at midnight on a Saturday in San Antonio?

You call, a person answers, and we schedule the soonest window. Radiant is available 24/7, including nights, weekends and holidays, and the price you are quoted is the same one you would get on a Tuesday afternoon; there are no surprise fees for after-hours work. During a heat wave, homes with no cooling and children, older adults or pets inside are treated as urgent. The technician diagnoses the system, shows you a written price, and starts only when you approve it. Care Club members get the same emergency response at standard rates with no dispatch fee and no after-hours trip fee.

Why is hard water such a big deal for San Antonio homes?

Because the Edwards Aquifer delivers water through limestone, it arrives loaded with dissolved calcium and magnesium. Every time that water is heated, some of it drops out as scale. In a tank water heater that means a layer of sediment on the bottom that makes the tank pop and rumble, insulates the burner from the water, and eventually rusts through. In a tankless unit it coats the heat exchanger until the flow drops. In the rest of the house it clogs aerators and showerheads, shortens the life of dishwashers and washing machines, and leaves spots on everything. A water softener stops the process at the main line, and a yearly water heater flush handles what has already built up.

What Our Customers Say

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

C Claudia H.
Claudia H. 3 years ago
★★★★★
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!
R Renee Mayer
Renee Mayer 3 years ago
★★★★★
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!!😊😊
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.
*Offers cannot be combined with other promotions or applied to dispatch fees. No cash value. Must present offer at time of service. Call for details.
(210) 294-6703 Book Now
×