4.9/5 — 2,000+ Five-Star Reviews
Leak Detection
Bay Area's #1 Choice
Expert plumbing leak detection services to protect your property from hidden water damage, rising utility bills, and costly pipe repairs. Fast, reliable service with upfront pricing and a 100% satisfaction guarantee.
- 25+ Years
- Licensed & Insured
- 24/7 Emergency
- No hidden costs
- Same-day service
- Fully licensed and insured
- 6000+ completed jobs
4.9/5 Rating
2,000+ Reviews
Licensed & Insured
CA Licensed
Same-Day Service
24/7 Emergency
25+ Years
Bay Area Experts
6,000+
Jobs Completed
Simple Process
How It Works
Call Us 24/7
Reach us anytime at
(408)539-6936.
Same-Day Dispatch
A licensed technician arrives at your home, often same day.
Diagnose & Fix
Upfront pricing before work begins. No hidden fees, ever.
100% Satisfaction
We stand behind every job with our satisfaction guarantee.
Professional Leak Detection Services
Precision Leak Detection & Repair
Protect your home with the Bay Area’s trusted plumbing leak detection specialists.
A refrigerant or air leak doesn’t just hurt your cooling—it spikes your energy bills and can damage your entire system. At United HVAC, we leverage over 25 years of local experience to find and fix leaks that others miss.
Why Choose Our Leak Detection Services?
State-of-the-Art Technology: We use advanced ultrasonic and electronic sensors to pinpoint leaks with surgical precision, saving you time and money.
Expert Solutions: Whether it’s a minor seal repair or a complex refrigerant recharge, our technicians deliver workmanship backed by industry best practices.
Transparent & Fair: No “hidden” holes in your invoice. We provide upfront, transparent pricing, so you’ll know the exact cost of the repair before we pick up a tool.
Guaranteed Results: Every leak detection and repair service comes with our comprehensive satisfaction guarantee and warranty coverage.
Don’t let a small leak turn into a big problem.
From emergency repairs to routine system inspections, we ensure your plumbing is airtight and efficient. We do it right the first time—guaranteed.
100% Satisfaction Guarantee
If you're not completely satisfied with our work, we'll come back and make it right — free of charge. That's our promise to every customer.
Signs You Need Leak Detection
- System not functioning properly
- Increased energy bills
- Planned upgrades or renovations
- Unusual noises or odors
- Age-related wear and tear
- Water leaks or damage signs
Why Choose United HVAC
- 25 years of experience
- Same-day service
- 1+ year warranty
- 6000+ completed jobs
- 0% interest financing and discounts
- Fully licensed and insured
- Well reviewed and highly trusted
- No hidden costs
- We work 365 days a year
Got Questions?
Frequently Asked Questions
We use non-invasive acoustic sensors and thermal imaging to "hear" and "see" moisture through structural barriers. This approach allows us to pinpoint the exact failure point without the need for unnecessary demolition, keeping your repair costs low and your home intact.
A standard residential leak detection session typically starts around $350 to $1000 depending on the complexity of the system. We provide a direct, flat-rate quote before we begin, ensuring you have total financial clarity without any hidden "investigation" fees.
A sudden spike in your water bill, hot spots on the floor, or the sound of rushing water when everything is turned off are primary indicators. If you notice damp carpets or unexplained cracks in your foundation, it’s a sign of sub-surface saturation that needs immediate expert support.
Yes. A single pinhole leak can release hundreds of gallons of water a week, leading to wood rot, mold growth, and compromised structural integrity. We treat even the smallest drips as a priority to prevent hazardous environmental issues and costly long-term repairs.
This is the most reliable sign of a continuous leak. If the "flow indicator" or dial is moving while your main shut-off is open, but no fixtures are running, water is escaping somewhere in your system. We can isolate the line to determine if the leak is inside the house or in your main service line.
Many policies cover the "cost of access"—the work required to find and reach the leak—especially if it results in water damage. We provide detailed digital reports and photo evidence that you can submit to your insurance provider to help streamline your claim process.
Most residential inspections are completed within 1 to 3 hours. Our technicians work efficiently to identify the source of the moisture, providing you with a private assessment and a clear plan for the necessary repairs on the same day.
Yes. We use specialized electronic "sniffers" and pressure testing to locate gas leaks. Since gas leaks are an immediate safety hazard, we prioritize these calls to ensure your home is safe.
Our advanced diagnostic tools have a near-100% success rate. If a leak exists, we will find it. In the rare event of a complex system failure, we stay until the root cause is identified, offering the honest, straightforward advice you need to resolve the issue.
Absolutely. A major pipe burst, or a ceiling leak is a high-stress event that requires an immediate response. Our team is available 24/7 to provide the support needed to stop the water flow and start the recovery process, helping you start feeling better right away.
Related Services
Other Plumbing Services
Leak Detection
Advanced leak detection technology to locate hidden leaks and prevent water damage.
Water Pipe Repair
Expert water pipe repair and replacement to restore your plumbing system.
Faucet Installation
Professional faucet installation and replacement for kitchens and bathrooms.
Kitchen Sink Installation
Complete kitchen sink installation including plumbing connections and fixtures.
Shower Repair & Replacement
Shower repair and replacement services including valves, heads, and enclosures.
Toilet Installation & Repair
Toilet installation, repair, and replacement for all makes and models.
Gas Line Repair & Installation
Licensed gas line repair, installation, and leak detection for safety and compliance.
Reverse Osmosis System Installation
Under-sink and whole-home reverse osmosis system installation for clean drinking water.
Explore Our Other Services
Heating & Air Conditioning
10 services available
Plumbing Services
9 services available
Drain & Sewer
4 services available
Water Line / Repiping
4 services available
Water Heating & Filtration
4 services available
Electrical Services
6 services available
Posted on Google Omied LeleTrustindex verifies that the original source of the review is Google. Pasha (technician) was very helpful. We had a clogged drain and were unable to clear it ourselves. He arrived and fixed the drain and was very clean and polite. Left everything as it was before he arrived. Highly recommend.Posted on Google Liang KatherineTrustindex verifies that the original source of the review is Google. Fantastic service! We really enjoyed working with United plumbingPosted on Google Natalia ShreveTrustindex verifies that the original source of the review is Google. Pasha was very professional he gave us a couple of options and finished the plumbing job very quicklyPosted on Google Just JaniceTrustindex verifies that the original source of the review is Google. As a busy homeowner I truly appreciate their ability to work around my schedule and needs. My garbage disposal recently died, and Neo was professional and offered my different options. He had the parts I needed and was able to complete the job quickly and cleanly.Posted on Google Chaozhong LianTrustindex verifies that the original source of the review is Google. I wholeheartedly recommend United HVAC, Plumbing & Electrical. I recently hired them to replace the original 1961 HVAC ductwork in my house, and they did a wonderful, extremely professional job. I am beyond satisfied with the results. You don't just have to take my word for it--I actually took pictures of their completed work, uploaded them to Google Gemini, and asked the AI to evaluate the installation. Even the AI praised their work, calling it a "top-tier, textbook installation"! (See the screenshots below). During the bidding process, I compared United with another company. United's quote was slightly higher, but choosing them was absolutely the best decision. Their program manager, Tim, was incredibly easy to work with. He quickly identified asbestos tape on my 1961 ducts and insisted we use a C-22 licensed abatement company to remove it safely and provide all the legal documentation for future reference. The other company offered a cheaper route by doing the removal themselves, but for something as dangerous as asbestos, doing it by the book is well worth the minor price difference. I also want to give a massive shoutout to Bair (Bayar) for his exceptional craftsmanship. He is easy-going, friendly, and really listened to all of my concerns. He provided great recommendations on how the new ductwork should be organized, and actually used a machine to fine-tune and balance the air pressure throughout the house. To top it all off, he even carefully reorganized the insulation in my attic after the work was done! It's this kind of attention to detail that makes them stand out. The pictures speak for themselves. If you want true professionals who care about safety, honesty, and quality craftsmanship, go with United HVAC.Posted on Google Chaozhong LianTrustindex verifies that the original source of the review is Google. I highly recommend United HVAC, Plumbing & Electrical! From start to finish, the entire process was incredibly smooth. They handled all the permits and inspections throughout the project, which gave us complete peace of mind. Every single technician we interacted with was friendly, approachable, and truly easy to work with. I specifically want to give a massive shoutout to Max (Aiusha) and Rinat for their wonderful work. Max is super professional and highly skilled. He installed my water heater and water softener with absolute "military precision." I'm the kind of guy who has a lot of weird, specific ideas about how pipes should be routed and extra gadgets I want installed to monitor the system, and Max handled all my requests with total ease. I am also super paranoid about plumbers plowing through studs or structural beams in my 1961 house, but Max was extremely careful and treated my home's structure with the utmost respect. Rinat is also a fantastic plumber. He installed a PRV, a Moen Flo auto-shutoff valve, an RO system, and even replaced some of the old sewage pipes in my house. He really listened to all of my requests and finished the job quickly and professionally. I highly recommend him! Because of their wonderful service, I’ve officially signed up for their company's membership. I am currently working with them to redo my HVAC ductwork, and I will definitely leave another review for that project once it's done. I'm sure they will do a wonderful job there, too!Posted on Google Ritesh BediaTrustindex verifies that the original source of the review is Google. Great service. Loved the professionalism and the way fixed my plumbing problem. I would call them again.Posted on Google Ginger PerngTrustindex verifies that the original source of the review is Google. We had to replace the wax ring on our toilet. Scheduling was easy; pricing was fair (much cheaper than the other quote we got!) Our technician, Melvin, was polite and expedient. This is our second time using United and highly recommend for gas and plumbing services.Posted on Google Joseph MartinTrustindex verifies that the original source of the review is Google. Melvin was great. Fast and efficient.
Serving the Bay Area
Leak Detection Available In
We proudly serve homeowners across the entire Bay Area
Don’t see your city? Call (408)539-6936 to check availability.