Austin & Central Texas Service Area
Plumbing, HVAC & Drain Service in San Marcos, Texas
Licensed plumbers and HVAC technicians serving San Marcos homeowners 24/7 — upfront pricing, no surprise fees, backed by the Radiant Home Comfort Guarantee.
Service Area
San Marcos, TX
Region
Austin & Central Texas
Your San Marcos Plumbing & Air Conditioning Team
Radiant’s licensed team serves San Marcos from our Austin office, 24/7, with the price approved before any work starts. See water softeners in Austin, or all of Radiant’s services in San Marcos.
Where we work in San Marcos
Current Specials
Save on the work your home needs most.
Both Locations
HVAC
Up to $200 off Duct Cleaning
Expires 12/31/2026
Both Locations
HVAC
$99 Furnace Tune-Up
Expires 12/31/2026
Both Locations
Whole-Home
$50 Off Any Service
Expires 12/31/2026
Both Locations
HVAC
No Payments, No Interest For 6 Months on a New A/C System
Expires 12/31/2026
Both Locations
Drain & Sewer
$83 Drain Clearing or It’s Free
Expires 12/31/2026
Austin
Electrical
Up to $1,000 Off Generator
Expires 12/31/2026
Nearby Service Areas
What Our Customers Say
Don't just take our word for it — hear from our satisfied customers
★★★★★
Had a massive undetectable leak in a new home I just moved into... I was losing 1000+ gallons a day and was so worried about what was going to be the outcome. Then Radiant/ DAVID FARMER my saving grace, best plumber I've ever had, came to my rescue. It was a large job with doing all the leak detection and solving each problem but David was kind enough to teach me everything he was doing/what to look out for in the future to avoid issues later. It was an awful stressful situation that he made easy and fixed quickly. I think they are fairly priced and will work with budget constraints if needed. All I know is I know who my plumber is for life and I really appreciated all that Radiant and David did! UPDATE: used radiant for a AC repair and again they didn’t disappoint! April was my technician and she was AWESOME! So patient and kind and I learned a lot about my system that she showed me! Kudos again Radiant!!
★★★★★
We had another incredible experience with Radiant Plumbing & Air Conditioning that left us very impressed. Back in 2013, we hired this exact company to replace our old water heater, and the entire experience was absolutely outstanding. So, as soon as we realised it was time to replace our 2013 water heater, we didn’t hesitate to contact Radiant once more. Once more, Radiant and Christian, the technician, exceeded all expectations with their efforts. Christian is a true professional. We appreciated how Christian clearly explained all the different choices and worked hard to keep us near our budget limits. Our sincere thanks go to Christian and Radiant for their genuine support in helping us remain as close as possible within our financial limits. Christian was not only kind but also very respectful during his time at our house, and he did an outstanding job. Christian and the gentlemen who accompanied him performed their tasks excellently, demonstrating friendliness, kindness, and deep knowledge of their craft, which clearly marks them as true professionals. I want to express my gratitude to Radiant and also to Christian, thank you both!!
★★★★★
If you're in need of a new HVAC system because the one you got from the new home builder has broken down or is not working right, especially in this heat wave, Radiant can get you setup with a new and energy efficient system that keeps you cool and comfortable no matter the extreme temperature outside.
I highly recommend Radiant for cooling and heating. They are very friendly, knowledgeable and professional.
Their technician (Nathan B.) was outstanding and Breana the customer support manager provided stellar service and support.
They even have an annual warranty service program where they come out twice a year ahead of the winter months for heating system checkup along with system maintenance and then again in springtime to check the cooling ahead of the summer months for cooling system check and and any necessary maintenance to keep your system running efficiently and smoothly.
There warranty service is much cheaper than American HomeShield and does not require a copay or deductible. It's quite a bargain and it provides peace of mind.
Give Radiant a try and your heating and cooling worries will disappear. I absolutely recommend them with the highest rating available.
I highly recommend Radiant for cooling and heating. They are very friendly, knowledgeable and professional.
Their technician (Nathan B.) was outstanding and Breana the customer support manager provided stellar service and support.
They even have an annual warranty service program where they come out twice a year ahead of the winter months for heating system checkup along with system maintenance and then again in springtime to check the cooling ahead of the summer months for cooling system check and and any necessary maintenance to keep your system running efficiently and smoothly.
There warranty service is much cheaper than American HomeShield and does not require a copay or deductible. It's quite a bargain and it provides peace of mind.
Give Radiant a try and your heating and cooling worries will disappear. I absolutely recommend them with the highest rating available.
*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.