My assembly failed its test — repair or replace?
We diagnose what failed first. Worn seals, springs, or a single check often rebuild with a repair kit; a cracked or corroded body gets fully replaced. You see both options priced upfront.
Residential & Commercial Service
Backflow Replacement
Failed your backflow test, or watching an aging assembly leak by? We diagnose the failure, rebuild it where parts allow or replace it when it’s beyond repair, then re-test and re-certify it to pass.
Failed your backflow test? We get it passing.
Since 1992Backflow repair & replacement
100,000+ testsBehind every diagnosis
5 countiesServed across South Florida
Direct answer
When does a backflow preventer need to be replaced?
A backflow preventer needs to be repaired or replaced when it fails its annual test or shows wear — leaking, discolored water, or a drop in pressure — because Florida’s salt air, dirt, and debris wear out the internal seals and springs over time. Flamingo Plumbing & Backflow diagnoses the failed assembly, rebuilds it when parts allow or fully replaces it when it’s beyond repair, then re-tests and re-certifies it across Palm Beach, Broward, Martin, St. Lucie, and Miami-Dade counties — same-day response, upfront pricing, and licensed since 1992 (CFC1426338).
What we handle
What backflow repair and replacement does Flamingo handle?
Diagnosing failed and worn backflow assemblies, rebuilding internal parts when the body is still sound, and full replacement when it’s beyond repair — domestic, irrigation, fire-line, and commercial, sized to spec. Every job is re-tested, re-certified, and guaranteed for at least a year. For the routine annual test, see backflow testing & certification.
Can you rebuild a backflow instead of replacing it?
Often, yes — when the body is sound we replace the worn internal seals and springs that salt air and debris wear out, the cheaper fix that gets the assembly passing again.
Which backflow assemblies do you replace?
Domestic, irrigation, fire-line, and commercial assemblies, sized to spec — then re-tested and re-certified so the paperwork is filed and your water supply stays protected.
Why it matters
What are the signs a backflow preventer is failing?
A backflow preventer is the one device keeping dirty water from siphoning back into your drinking supply. When it fails, that protection is gone — so the warning signs are worth acting on before the annual test forces the issue.
- A failed annual backflow test — the clearest signal it needs repair or replacement.
- Discolored water, a drop in water pressure, or leaks pooling around the device.
- Salt air, dirt, and debris that wear out the internal seals and springs over time.
- An assembly old enough to rebuild with parts — or corroded enough to replace outright.
- Lost protection: a failed assembly no longer guards your water supply from backflow.
How a replacement works
What happens when your backflow fails a test?
Tell us what failed and we take it from there — diagnose, quote repair vs replacement upfront, and re-certify the assembly so it passes.
Call or book
Phones answered 24/7 by a real person. Tell us the failed-test result, or the leak, low pressure, or discolored water you’ve noticed.
Diagnose the failure
A licensed, certified tech opens the assembly and finds what failed — worn seals and springs, a bad check, or a body corroded beyond repair.
Repair or replace
You see repair vs full-replacement priced upfront. We rebuild with the right parts where we can, or fit a new assembly sized to spec.
Re-test & certify
We re-test, re-certify, and file the paperwork — every job covered for at least a year, licensed and insured, CFC1426338.
Why Flamingo for backflow replacement
Why choose Flamingo to replace your backflow in South Florida?
Since 1992
Backflow expertise since 1992 and over 100,000 backflow tests handled — across homes, office complexes, retail, and industrial properties.
Certified technicians
Only licensed, certified technicians may repair, replace, and re-certify a backflow — and that’s exactly who does the work on your assembly.
Re-tested & guaranteed
Every assembly re-tested, re-certified, and the paperwork filed — at least one year guaranteed on the work — CFC1426338 · FPC17-000046.
★★★★★
967 Google reviews
Real customers · Real reviews
South Florida property owners trust Flamingo with the water supply.
P
★★★★★ 5 weeks ago
"I have always had a pleasant experience with Flamingo Plumbing. I am a commercial property manager and have used Flamingo Plumbing for many years."Commercial · Multi-year client
J
★★★★★ 2 weeks ago
"Chase came to house to fix my issue. He came the same day!!! He is very professional, calm, knowledgeable and kind."Same-day service · Tech: Chase
J
★★★★★ 2 weeks ago
"My plumber was named Kyle Roiko and he was super friendly and very knowledgeable. He got the jobs done very quickly and explained everything to me."Clear communication · Tech: Kyle
Sample of recent reviews. Read all 967 on Google →
Backflow replacement questions
Backflow replacement questions people actually ask.
How much does it cost to replace a backflow preventer?
It depends on whether the assembly can be rebuilt with internal parts or has to be fully replaced, and on its size and type — domestic, irrigation, or fire-line. Estimates are free, pricing is upfront before any work starts, and financing is available — call (561) 448-3200 for today’s pricing.
Do I need to repair or fully replace a backflow that failed its test?
It depends on what failed. Worn seals, springs, or a single check can often be rebuilt with a repair kit, which is the cheaper fix. When the body is cracked or corroded beyond repair, the whole assembly is replaced. We diagnose the failure first, then quote both options upfront.
Why did my backflow preventer fail the test?
Florida’s salt air, dirt, and debris wear out the internal seals and springs over time, so checks no longer seal and the assembly leaks by. Discolored water, a drop in water pressure, or leaks around the device are common signs it’s on its way to a failed test.
How long does a backflow replacement take?
Most rebuilds and replacements are finished in a single same-day visit once the right parts or assembly are on hand. We phone-answer 24/7 and respond same-day across the five counties we serve.
Do you re-test and re-certify the backflow after replacing it?
Yes. Only a licensed, certified technician may do this work, and every repair or replacement is re-tested and re-certified so it passes and the paperwork is filed with your authority (CFC1426338, FPC17-000046).
Can I replace a backflow assembly myself?
No. By law only a licensed, certified backflow technician may repair, replace, and re-certify an assembly, and the work has to be tested and reported to keep your water supply protected. Flamingo has handled backflow since 1992 and over 100,000 backflow tests.
Still have a question? Call (561) 448-3200 — a real person picks up, 24/7.
The Flamingo Club
Members pay less every time.
Flamingo Club members get priority scheduling, waived diagnostic fees, and 10% off repairs — for $24.99/mo, with a free annual inspection that catches leaks early.
See the Flamingo Club →Book the next available window
Same Day Service, Guaranteed.
Tell us what you’ve noticed — a failed test, a leak around the device, discolored water, or low pressure. We will diagnose, price repair vs replacement upfront, and re-certify it to pass. Call about a failed backflow test →
- Phones open 24/7. A real person picks up.
- If the issue is urgent, say that first.