Is your plumbing actually leaking — or is something else going on? Pressure testing removes the guesswork. We isolate and pressurize your supply lines and drain lines individually to confirm exactly which system has the problem, so you're not paying to fix the wrong thing.
Pressure testing is the definitive way to determine whether your plumbing system has a leak. The concept is simple: we isolate a section of your plumbing, pressurize it with air or water, and monitor a calibrated gauge. If the pressure holds steady, the line is intact. If the pressure drops, there's a leak somewhere in that section.
What makes pressure testing so valuable is its objectivity. There's no interpretation — the gauge either holds or it doesn't. This eliminates guesswork and gives you a clear, documented answer. It's the difference between "I think you might have a leak" and "your hot water supply line lost 15 PSI in 10 minutes — there's definitely a leak on that side."
Pressure testing is the foundation of every professional leak investigation. It tells us where to focus — and just as importantly, where we don't need to look. That efficiency saves you time and money on both detection and repairs.
Different systems require different approaches. We test them all.
We isolate your cold water supply lines and pressurize them with a calibrated gauge. A pressure drop confirms a leak on the cold side — often caused by corroded fittings, failed joints, or pinhole leaks in copper pipe.
Hot water lines are tested separately from cold. Hot side leaks are common because heated water accelerates pipe corrosion. Testing hot and cold independently tells us exactly which system needs attention.
Drain lines aren't pressurized during normal operation, so they require a different approach. We plug the lines and fill them with air or water to check for leaks. Drain leaks are particularly damaging because they carry wastewater.
For larger homes or complex plumbing, we isolate individual zones — kitchen, bathrooms, outdoor lines — and test each one separately. This narrows the leak to a specific area of the building, not just a system.
After a plumber completes a repair, pressure testing confirms the fix is solid. We retest the repaired section to verify it holds pressure — giving you documented proof that the leak is resolved.
Buying or selling a home? Pressure testing gives both parties a clear answer about the condition of the plumbing system. Our documented results provide confidence during negotiations and inspections.
A straightforward, step-by-step process with clear results.
We review your plumbing layout to determine which lines to test and identify access points. Understanding the system before testing ensures we don't miss any sections and can isolate zones effectively.
We close off the section being tested and apply controlled pressure using air or water. A calibrated gauge is attached to give precise, real-time readings. Each system — hot, cold, drain — is tested independently.
We monitor the pressure gauge over a set period. The rate and amount of pressure drop tells us the severity of the leak. All readings are recorded and included in your inspection report — the numbers don't lie.
You get a clear answer: which systems passed and which failed. For failed systems, we can proceed with acoustic listening and thermal imaging to pinpoint the exact leak location, or provide results for your plumber to work from.
Houston's plumbing takes a beating. Between the expansive clay soil that shifts with every rain-and-drought cycle, the aggressive municipal water that corrodes copper over time, and the occasional hard freeze that stresses every joint in the system — Houston pipes don't last forever. Pressure testing is the most reliable way to assess the integrity of a plumbing system in this environment.
For homes built in the 1970s through 1990s — which is a massive segment of Houston's housing stock — the original copper supply lines and cast iron drain lines are aging out. Many of these systems are 30 to 50 years old. Pressure testing reveals whether they're still holding up or quietly leaking behind walls and under slabs.
We also see strong demand for pressure testing in real estate transactions. Houston's competitive market moves fast, and buyers want verification that the plumbing is sound before closing. A professional pressure test provides documented evidence that protects both sides of the deal.
Whether you suspect a leak, need to verify a repair, or want to assess your plumbing before a sale — pressure testing gives you a definitive answer.
Included with leak detection — or available as a standalone service.
Call (346) 222-3951 for standalone pressure testing quotes.
After-hours & emergency service available: +$150
Every test includes documented gauge readings and a written report.
A plumbing pressure test involves isolating sections of your plumbing system and filling them with air or water at a controlled pressure. A calibrated gauge monitors the pressure over time. If the pressure drops, there's a leak in that section. It's the most reliable way to confirm whether a plumbing system is leaking and which specific line is the problem.
Pressure testing is included as part of our standard leak detection services. If you need standalone pressure testing — for a real estate transaction, insurance requirement, or post-repair verification — call us at (346) 222-3951 for pricing based on your specific needs.
Yes. We test supply lines (hot and cold water) and drain lines separately. Supply line testing uses water pressure with a calibrated gauge. Drain line testing typically uses air pressure since drain lines operate by gravity. Both methods reliably confirm the presence of leaks.
A basic pressure test takes 30 to 60 minutes. When zone isolation is needed — testing individual sections to narrow down the leak — it can take 1 to 2 hours. The time depends on plumbing system size and how many zones need to be isolated.
Supply lines carry pressurized water to your fixtures and are tested by closing the system and monitoring gauge readings. Drain lines carry wastewater away by gravity and are tested by plugging the line and pressurizing with air or water. Different systems, different methods, same goal: confirming the line's integrity.
In Houston, many home inspectors flag plumbing concerns that require professional pressure testing to confirm. Buyers, sellers, and agents frequently request it as part of due diligence. We provide clear, documented results both parties can rely on.
A pressure test confirms whether a leak exists and narrows it to a specific system (hot, cold, or drain). To pinpoint the exact location, we combine pressure testing with acoustic listening and thermal imaging. Pressure testing is the critical first step that focuses the entire investigation.
Zone isolation involves shutting off or plugging sections of your plumbing to test them independently. Instead of the entire system at once, we isolate individual zones — kitchen, bathrooms, outdoor lines — to determine exactly which section has the leak. Especially valuable in larger homes or commercial properties.
Get a definitive answer about your plumbing's integrity. No guesswork, just gauge readings.
Pressure testing is part of our full leak detection toolkit.
FLIR infrared cameras reveal hidden moisture patterns, hot water line leaks, and temperature anomalies invisible to the naked eye.
Acoustic listening, thermal imaging, and pressure testing to pinpoint leaks under your foundation. Starting at $450.
Multi-family and commercial investigations with comprehensive documentation for property managers. Starting at $650.
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