Plumber & AC Repair in Universal City, TX

Keeping Older Universal City Homes Running Well

Most Universal City houses were built decades ago for Randolph families, and the plumbing and ductwork show it. Radiant’s licensed technicians fix what is worn out with the price approved first.

Service Area Universal City, TX
Region San Antonio & the Hill Country

Plumbing and HVAC Service in Universal City

Universal City grew up alongside Joint Base San Antonio-Randolph, and its neighborhoods along Pat Booker Road were largely built between the 1950s and the 1980s to house the people who worked there. That gives the city a specific character: single-story ranch homes on slabs, original galvanized supply lines and cast iron drains in many of them, water heaters in the garage, and ductwork in low attics that has never been sealed. Newer homes exist at the edges, but the core of the city is older than most of the San Antonio suburbs around it.

Radiant has served San Antonio since 1999, and Universal City is minutes from our office on the northeast side. The calls we take here most often are water heaters that have rusted quietly for fifteen years, low pressure and brown water from corroded galvanized pipe, drains that back up because the cast iron underneath has scaled or cracked, and air conditioners that cannot cool the back bedrooms no matter how low the thermostat goes.

Every visit is a licensed, background-checked, bonded technician who explains the problem plainly and gives you a written price before any work begins. Military families on a timeline, retirees who have owned the house since it was new, and landlords with a rental near the base all get the same treatment: honest options, no pressure, and the Home Comfort Guarantee behind the work.

  • Mid-century plumbing Galvanized supply, cast iron drains and original shutoffs are what we expect to find, and we come prepared.
  • Close to our office Universal City is a short run from our San Antonio shop, which keeps scheduling simple.
  • Quotes that hold Honored for 72 hours with no hidden fees, useful when you are coordinating a move or a sale.
Universal City same-day service by Radiant

Services for Universal City Homes

The repairs an older house needs most, plus replacements when the original equipment is finally done.

Plumbers

Corroded galvanized lines, running toilets, failed shutoffs and whole-house repipes for homes built when Randolph was young.

Universal City plumbers

Water Heater Replacement

A garage water heater past fifteen years is living on borrowed time. We replace it cleanly, with financing if the timing is bad.

Replacement options

Drain Cleaning

Cast iron drains under mid-century slabs scale and rot. We clear the stoppage and camera the line so you know what is coming.

Clear the line

AC Repair

Single-story homes with attic ducts heat up fast when the system fails. We diagnose the actual fault and quote it before repairing.

Repair my AC

Duct Cleaning

Fifty years of dust and never-sealed joints. Cleaning and sealing the ducts is often why the back bedrooms finally cool.

Fix the airflow

Furnace Repair

Older gas furnaces get a safety inspection with every repair. We make sure it is heating safely before the first cold front.

Heating help

Emergency Plumbing

A burst line in an old house does not wait for morning. Neither do we, and calling at night comes with no surprise fees.

Get help now

Local Knowledge

What Age Does to a Universal City House

Galvanized steel supply lines. Standard when much of Universal City was built, and now mostly past their useful life. The pipe rusts from the inside, narrowing until pressure drops and water runs brown after a few days away. Patching one section usually just moves the next leak. A whole-house repipe is a bigger job, but in a single-story slab home it is often less disruptive than people expect, and we price it honestly against continued repairs.

Cast iron drains. Under the slab, the original cast iron has spent decades scaling and corroding. Slow drains everywhere, recurring clogs and a sewer smell in the yard all point to the line. We camera it before recommending anything, because the answer might be a spot repair rather than a replacement.

Original ductwork. Low attics, undersized returns and duct joints that were never sealed explain why the back of the house never cools. Sealing and balancing the ducts often solves more than a new unit would.

Garage water heaters. Out of sight and easy to forget until the pan overflows. An annual flush and a look at the anode rod add years; a tank past fifteen is a replacement conversation.

Clay and freezes. The soil moves with the seasons, stressing slab plumbing and sewer joints. In February 2021, garage heaters and hose bibs froze across the northeast side. Insulation and a working shutoff valve are cheap insurance.

Universal City and the Randolph Area

Universal City, Converse, Schertz and Cibolo are all on our daily routes from the San Antonio office.

Frequently Asked Questions

Our home near Randolph still has its original galvanized pipe. Should we repipe now or wait?

If you are seeing the symptoms, the honest answer is sooner rather than later. Low pressure that gets worse each year, rusty water after a trip, and pinhole leaks that keep appearing in different places all mean the pipe is corroded through most of its wall. Each patch buys months, not years. A repipe in a single-story slab home usually runs through the attic and walls with minimal disruption, and it resets the clock on the whole system. We will inspect the existing pipe, show you what we find and price a full repipe against a targeted repair so you can decide with real numbers. Financing is available.

We are PCSing out and need repairs done before the sale. Can you work on that timeline?

Yes. We see a lot of Universal City families selling on a military timeline, and the process is built for it. Book a plumbing inspection and an HVAC check early, and you will have a written list of what needs fixing before the buyer’s inspector finds it. Every quote is written, honored for 72 hours, and free of hidden fees, so it works cleanly with a closing schedule. If the buyer’s inspection turns up something after that, call us and we will get it on the schedule. Our 24/7 availability means a last-minute repair does not have to wait for a weekday.

Why do the back bedrooms in my single-story Universal City home never get cool?

Almost always the ducts, not the unit. In a mid-century ranch house, the ductwork runs through a low attic that hits 140 degrees in summer. The rooms farthest from the air handler get air that has leaked out at every unsealed joint and picked up attic heat along the way, while the thermostat near the front of the house is satisfied and shuts the system off. Adding a bigger unit makes that worse. We measure airflow at each register, find the leaks and restrictions, and fix the ducts. If the equipment itself is at fault, we will say so and quote the repair upfront.

The water heater in my garage is 15 years old and still works. Replace it or leave it alone?

At fifteen years in Universal City water, it is well past the age most tanks fail, and the way they fail is by rusting through and flooding the garage, sometimes into the house. A few checks tell us how much time it has: rust at the fittings, rumbling when it heats, discolored hot water, and the condition of the anode rod. If it is sound, an annual flush can keep it going a while longer. If it is not, we will price a replacement and let you choose the timing rather than the tank choosing it for you. Either way, you get the answer and the price before we do anything.

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.
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