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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 If your system is outdated, damaged, or no longer compliant, it may be time to consider a replacement.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  • The device is outdated and replacement parts are hard to find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.

  • "3 years of frustration cured in under an hour!"
    They were able to diagnose the root cause and fix an issue that had been a nagging problem ever since the HVAC was installed by another company.
    - Chance S.
  • "Technician JW called ahead of arrival and was on time."
    JW quickly ID the problem and explained what was happening and what needed to be done. He was personable and completed the job w/o delay.
    - Travis H.
  • "These guys went above and beyond to help me."
    They walked us through each issue and had us up and running inside of 2 hours. Amazing.
    - Emily H.
  • "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.
  • "I highly recommend them!"
    The guys were very professional and I was expecting them to come between 2-4 and they actually came sooner and the guys did a great job and hardly any mess what’s so ever!
    - J.L. D.
  • "When Edgar arrived he was polite and courteous. He explained what he was going to complete the diagnostics first."
    He then explained what needed to be done and made sure I understood. It was very appreciated that he gave me time to decide on my repair because it was going to cost a bit of money.
    - Esther T.
  • "Reliable Air is dependable and trustworthy."
    JW came out on time and did a good job of tuning up my heat pump.
    - Joe V.
  • "Thanks again for the great service!"
    Geoff came to fix our toilet that's been acting up for a couple of weeks now. He did a great job and was very professional. He was very kind and helpful.
    - Michelle M.

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:
  • Reliable Relationships
    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.
  • Reliable Scheduling
    With same-day service and 2-hour scheduling windows, you'll get service at a time that's convenient for you.
  • Reliable People
    Since we constantly train our employees, you can be 100% confident that your job will be done right—the first time.
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