4.9/5 — 2,000+ Five-Star Reviews

Leak Detection
Bay Area's #1 Choice

Expert air conditioner installation for maximum comfort and energy efficiency. Fast, reliable service with upfront pricing and a 100% satisfaction guarantee.

⚡ Average response: under 60 min

Need Leak Detection?

  • No hidden costs
  • Same-day service
  • Fully licensed and insured
  • 6000+ completed jobs
Google Rating
5 .9★
Five-Star Reviews
1900 +

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

1

Call Us 24/7

Reach us anytime at
(408) 617-8871.

2

Same-Day Dispatch

A licensed technician arrives at your home, often same day.

3

Diagnose & Fix

Upfront pricing before work begins. No hidden fees, ever.

4

100% Satisfaction

We stand behind every job with our satisfaction guarantee.

Professional Leak Detection Services

Precision Leak Detection & Repair

Protect your home and your comfort with the Bay Area’s leading HVAC 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 HVAC 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

Call Us Today

Available 24/7 • No trip charge • Free estimates

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

How do you find a water leak that is hidden behind a wall or under a floor?

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.

How much does a professional leak detection service cost in 2026?

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.

What are the most common signs of a hidden slab leak?

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.

Can a small pinhole leak really cause significant damage?

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.

Why is my water meter spinning when all my faucets are closed?

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.

Will my homeowner's insurance cover the cost of leak detection?

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.

How long does the leak detection process take?

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.

Can you detect leaks in gas lines as well as water pipes?

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.

What happens if you can't find the leak?

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.

Do you provide 24/7 emergency leak detection for burst pipes?

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.

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Explore Our Other Services

Serving the Bay Area

Leak Detection Available In

We proudly serve homeowners across the entire Bay Area

Don’t see your city? Call (408) 617-8871 to check availability.

Ready to Get Started?

Average response time: under 60 minutes