Acoustic • Thermal • Tracer Gas — We locate hidden leaks other companies miss.
Click Here to Call (888) 466-2103The water bill jumped. You can't figure out why.
Or the warm spot showed up on the floor. The damp patch in the closet. The mildew smell that wasn't there last month. The sound of running water with everything off.
You're not paranoid. Something is leaking. The only question is where — and how much damage it's doing while you try to figure it out.
Most plumbers respond to leaks. We specialize in finding them. The distinction matters because hidden leaks in San Rafael homes cause damage on a clock, and every day of delay multiplies what the eventual repair will cost.
A week of delay on a visible leak costs you almost nothing. A week of delay on a hidden leak costs far more than you'd guess.
Water saturates materials. Subfloor swells. Drywall wicks moisture. Mold begins. Structural damage follows. Insurance complications arise. The detection visit that catches the leak early prevents almost all of that.
Warm spot on floor, unexplained water bill increase, sound of running water. We use acoustic equipment to locate precisely, then offer spot repair or reroute options.
Thermal imaging, acoustic devices, and moisture meters to pinpoint leaks without unnecessary exploratory cuts.
Pressure testing, ground microphones, and tracer gas for buried service lines between meter and house.
Circuit pressure testing and acoustic/tracer methods for pools, sprinklers, and outdoor lines.
Combustible gas detectors and pressure-decay testing. Immediate safety protocols followed.
Whole-home monitoring with automatic shutoff and phone notifications.
Detection-grade equipment on every truck. Acoustic, thermal, tracer gas, moisture meters.
Same team detects and repairs. Single point of accountability.
Flat detection pricing disclosed upfront. Credited toward repair if authorized.
"Two plumbers had been out... CNR brought actual detection equipment, located the source within an hour... The total cost was less than just the drywall work from previous attempts."
— Sarah J., San Rafael homeowner
"The technician was thorough... quoted accurately, didn't try to upsell... walked me through both repair options."
— Daniel B., San Rafael
"Had a follow-up issue... came out same-day, replaced the fitting under warranty... No charge, no argument."
— Christopher A., San Rafael homeowner
Flat fee for the detection visit, disclosed before dispatch. Credited toward repair if authorized. Repair quoted after location.
Same-day for active leaks. 24-48 hours for non-emergency situations in San Rafael.
Non-invasive in most cases. Only targeted access for actual repair.
Yes. Same team handles detection and repair whenever possible.
Slow leaks under slabs and underground irrigation lines. Detectable with proper equipment.
Yes. Using appropriate detectors and pressure testing. Safety first — if you smell gas, contact utility immediately.
The wrong tool keeps getting brought to the problem. General plumbers use installation tools. We use detection-grade acoustic amplifiers, thermal imaging, ground microphones, and tracer gas.
Match the right equipment to the problem and hidden leaks become findable.
Suspect a hidden leak in San Rafael? Every day of delay multiplies repair costs. Limited same-day slots available.
Click Here to Call (888) 466-2103