Backflow Preventer Replacement in San Marcos
Professional Backflow Device Replacement for Commercial Properties
A failing backflow preventer can compromise the safety of your water supply and put your business at risk of contamination. If your system is outdated, damaged, or no longer compliant, it may be time to consider a replacement. At Reliable Air, we specialize in backflow preventer replacement for commercial properties in San Marcos, helping businesses maintain safe, reliable, and regulation-compliant water systems.
Whether your existing device is leaking, corroded, or failing inspection, our experienced team is here to provide dependable solutions tailored to your property's plumbing needs.
Signs You Need Backflow Preventer Replacement
It’s not always easy to tell when a backflow preventer needs replacing, but ignoring the signs can lead to costly damage and potential health hazards. You may need a replacement if:
- The device is leaking or showing signs of visible damage or corrosion
- Water pressure is inconsistent or has dropped noticeably
- You’ve failed a backflow inspection or received a citation for non-compliance
- The device is outdated and replacement parts are hard to find
- You notice discolored or foul-smelling water, which may indicate contamination
Our team can assess your system and recommend a replacement if your current device is no longer functioning safely or efficiently.
Need to replace a backflow preventer in San Marcos? Call Reliable Air at (512) 580-8837 or contact us online to schedule service.
Benefits of Replacing Your Backflow Preventer
Replacing an old or faulty backflow device offers several key benefits for your business:
✅ Improved water safety and reduced risk of contamination
✅ Compliance with local regulations and inspection standards
✅ Fewer service disruptions and plumbing issues
✅ Long-term cost savings by preventing emergency repairs and water damage
✅ Peace of mind knowing your property and occupants are protected
We only install high-quality, durable devices designed to meet current San Marcos plumbing codes and stand up to real-world use in commercial settings.
Local Compliance and Regulations
San Marcos enforces strict guidelines for commercial backflow prevention to safeguard the public water supply. Failing to replace a non-functioning device can lead to code violations and fines. Our technicians stay up to date on all local codes and can ensure your new backflow preventer meets or exceeds the necessary standards.
Common Questions About Backflow Preventer Replacement
- How long does a backflow preventer last?
Most backflow prevention devices last between 5–10 years, depending on usage and water conditions. If your unit is approaching the end of its lifespan, a proactive replacement is the safest option. - Can I upgrade to a more efficient model?
Absolutely. Newer backflow preventers are more compact, efficient, and easier to maintain. We can recommend an upgraded device that fits your system’s needs and budget. - Do I need a permit for backflow replacement?
In most cases, yes—replacing a backflow preventer involves plumbing code compliance. Our team handles the permitting process to make the upgrade seamless for you.
Don’t wait for a system failure or failed inspection to address a faulty backflow device.
Call Reliable Air today at (512) 580-8837 or contact us online to schedule a professional assessment and get your backflow preventer replaced the right way.

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"The installation came with a 10 year parts and maintenance, so this is all being done free of charge."
We used them to install a brand new a/c unit about 4 years ago and just had our first issue with it this week. I called yesterday, and they had someone out first thing this morning to fix it.- Dave N. -
"Wonderful customer service on top of always being available day and night."
Shout out Cheryl and Juan for the great experience! The entire team is on top of it!- Bryn L. -
"When he arrived he was professional, kind, and we knew we were in good hands."
He fixed our AC and was out in 45 minutes. Best of all we had no outrageous service call fee and saved us money. We definitely will use Reliable Air again and highly recommend them for your heating and air conditioning needs!- Amanda N. -
"Thank you JW!"
JW was very professional, checked the system out top to bottom, quickly identified the issues and hopefully, will be tasked with getting our heat system up and running after speaking with owner.- Daryl F. -
"I am very happy with the professional informative technicians and office people at Reliable Air."
I HIGHLY recommend this San Marcos company who now does plumbing. Today they installed my new water softener and I am very happy with their service.- Lisa R. -
"So thankful they could help us today during this unseasonably hot time."
Second time we've used Reliable Air. Andrew was on-time and professional.- Robert G. -
"Reliable Air is dependable and trustworthy."
JW came out on time and did a good job of tuning up my heat pump.- Joe V. -
"I would recommend them to anyone."
Knowing their quality of work, when I needed work on my own home I knew who to call.- James B.

Why Choose Us?
As times get tough, other companies cut corners. But we decided to stay reliable for over 29 years. Call us and you'll get:
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Many of our employees stay for 10+ years. So you'll always hear a familiar voice on the phone or see a familiar face at your door.
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With same-day service and 2-hour scheduling windows, you'll get service at a time that's convenient for you.
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Since we constantly train our employees, you can be 100% confident that your job will be done right—the first time.