San marcos, TX

From New Installs to Fast Fixes Radiant is Your Home Service Specialist

Transform your home with premier A/C, plumbing and heating services from Radiant® Plumbing & Air Conditioning – San Antonio.

Plumbers & HVAC Contractors

Reliable, Year-Round Service in San Marcos

From ensuring your HVAC system operates at peak efficiency to safeguarding your plumbing infrastructure against leaks and clogs, our team is equipped to handle it all. Whether it’s a faulty furnace in need of replacement, a malfunctioning air conditioning unit requiring repair, or a water softener installation to combat hard water issues prevalent in the area, we have the expertise to deliver lasting solutions.

Experience the difference that expert home service, repair, and maintenance can make. Contact Radiant San Antonio today to schedule your appointment and take the first step toward a more comfortable, efficient, and enjoyable home environment.

Radiant Offers

Special Offers and Coupons

$50 Off Any Service

Expires: 12/31/2026

Up To $250 Off A New Tank Water Heater

Expires: 12/31/2026

$99 Water Heater Flush and Safety Check

Expires: 12/31/2026

$83 Drain Clearing or It’s Free

Expires: 12/31/2026

Available 24/7

Plumbing & HVAC Services in San Marcos

Air Conditioning

From tiny tweaks to big emergencies, our expert crews have the skills to keep you chill.

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Heating

From air conditioning and indoor air quality to heat pumps, furnaces and more–Radiant has you covered.

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Plumbing

Like most people, you might not think much about your plumbing – until something happens.

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Drains & Sewers

Your drains are nearly invisible, but far from invincible. We’re here to help keep things flowing.

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Air Quality

Helping improve air quality in local homes is another reason Texans trust Radiant.

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Maintenance Plan

Our membership program is crafted to offer peace of mind and comfort to every San Antonio home, blending professional care with a touch of local charm.

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Just Call Radiant.

Expert Repairs, Honest Service, No Guesswork

Straight answers, solid work, and a team that follows through with no runaround and no guesswork.

Serving Austin & San Antonio

Trusted by homeowners across Austin and San Antonio for reliable plumbing and HVAC work, built on decades of consistent service and long-term relationships.

Scheduling Around You

Flexible appointments with weekend availability mean you’re not stuck waiting around for us, we show up when we say we will.

Honest Pricing, No Guesswork

Upfront recommendations and transparent pricing, with no pressure, just clear options so you can make the right call for your home.

Backed by our Home Comfort Guarantee, just one more reason to call Radiant.

Home Maintenance Plans

Radiant Care Club

Experience peace of mind and hassle-free home maintenance with Radiant Care Club in San Marcos, TX. Our exclusive membership program offers year-round maintenance for your HVAC and plumbing systems, ensuring optimal performance and efficiency. With Radiant Care Club, you’ll enjoy priority service, discounts on repairs, and scheduled maintenance visits, all backed by our years of expertise and thousands of satisfied customers. Elevate your home comfort experience and protect your investment with Radiant Care Club. Join today and let us take care of your home, so you can focus on what matters most.

Call or Schedule Your Service Online!

210-294-6703

Radiant Reviews

Always 5-Star Service

We’ve been in business since 1984, so we have made thousands of San Antonio homeowners happy. Explore some of our latest reviews.

Awards & Accreditations

San Antonio's Finest

Radiant has earned the trust of the community, being recognized with the following awards and certifications.

San marcos TX

Plumbing and HVAC Issues? Don't Sweat It -Radiant is Here to Help!

Experiencing Unexpected Plumbing Breakdowns?

When plumbing issues strike, they disrupt your daily routine and can cause significant inconvenience or even damage to your home. Whether it’s a clogged drain, a leaking pipe, or a malfunctioning water heater, the stress and potential costs can escalate quickly.

Stay Cool and Comfortable All Year Round

In San Marcos, TX, where temperatures can soar, having a reliable air conditioning system isn’t just a luxury—it’s a necessity. Don’t let a malfunctioning AC unit leave you sweating during a heatwave or shivering if your heater goes out.

Radiant Plumbing Solutions

At Radiant, we provide a comprehensive range of services that cover everything from routine maintenance to emergency plumbing repairs. Our skilled technicians are equipped to handle:

Plumbing Repairs and Installations: Quick and effective plumbing solutions to keep your water flowing and your pipes in perfect condition.
Air Conditioning and Heating Services: From new installations to repairs and regular maintenance, we ensure your heating and cooling systems are efficient and reliable.
Water Quality Solutions: Installation and maintenance of water softeners and treatment services to ensure your water is safe and clean.

Why Choose Radiant?

Rapid Response: Our local experts are available 24/7 to tackle any emergency—ensuring minimal disruption to your daily life.
Trusted Technicians: With years of experience and a reputation for quality, our professionals deliver service you can depend on.
Customer Satisfaction Guaranteed: We’re committed to providing not just services, but solutions that last, with customer satisfaction as our top priority.

Don’t wait for a small inconvenience to become a major headache. Call Radiant today to schedule a service or consultation, and discover why we are San Marcos’s trusted choice for plumbing and HVAC services. Your comfort is our commitment!