FREE Diagnostic with any HVAC repair
Get a complete system diagnostic at no cost when you book any HVAC repair service.
Offer available for a limited time and may be canceled or changed without notice. Not valid with other promotions.
When your drains slow down or back up, you need someone who can respond quickly and clear the problem completely.
Schedule Your Drain Clearing Service
Sherlock Air has officially joined forces with Mauzy Cooling, Heating, Plumbing & Electrical, combining two trusted Southern California home-services teams into a single powerhouse.
Enjoy trusted expertise, fast response times, upfront pricing, and dependable service.
Clear, transparent quotes with no hidden fees, surprises, or gotcha's.
Licensed, certified professionals providing knowledgeable, reliable guidance.
We recommend only what you need, customized to your specific situation.
Fully stocked trucks and flexible scheduling help get most repairs done the same day.
San Diego’s drain conditions vary as much as its neighborhoods do. The oldest parts of the city, including Bankers Hill, Mission Hills, and older areas of South Park and Golden Hill, have homes with original cast iron and galvanized plumbing that’s been accumulating grease and scale since the early to mid-1900s. Those pipes narrow from the inside over decades and produce slow drains long before there’s a discrete blockage. Urban neighborhoods throughout central San Diego have mature tree canopy where roots have been working toward sewer joints for generations. And coastal neighborhoods deal with the humidity-driven organic growth in drain lines that affects all of San Diego’s western communities. Sherlock Plumbing, Heating and Air has been clearing drains across San Diego since 2002. Upfront pricing, camera inspection available, and same-day service on most calls throughout the city.
San Diego’s urban core has a mix of sewer infrastructure installed at different times and updated in pieces over the decades. Homes that have been partially repiped often have systems where old and new pipe materials meet, and those transition joints are common problem points.
Sherlock was started in 2002 and remains family-owned. For San Diego homeowners, that means a local company with a genuine stake in its community reputation rather than a regional chain optimizing for volume. More than 20 years of that approach has built a 4.9-star rating across more than 4,200 Google reviews.
Sherlock is based in nearby Carlsbad and serves San Diego regularly. Most drain clearing calls get handled the same day. Our phones are answered 24/7 for customers with urgent situations. Call any time.
The Sherlock Smart Membership covers two annual HVAC tune-ups, 15% off service repairs and indoor air quality products, no dispatch fee, a No Breakdown Guarantee, and a credit of up to $500 toward a future system replacement. At $19.99 a month it covers both HVAC and plumbing needs. Ask about current membership benefits when you call.
Slow drains and backups won’t improve without professional help, so don’t delay getting service. Contact Sherlock Air today to schedule your drain clearing service in San Diego and restore proper flow to your plumbing system.
Enjoy trusted expertise, fast response times, upfront pricing, and dependable service.
FREE
FREE Diagnostic with any HVAC repair
Get a complete system diagnostic at no cost when you book any HVAC repair service.
Offer available for a limited time and may be canceled or changed without notice. Not valid with other promotions.
$99
$99 Water Heater Flush
Keep your water heater running efficiently and extend its lifespan with a professional flush for just $99.
Expires: 4/30/26
Credit applies to labor and/or materials only. Not valid on diagnostic fees, maintenance plans, memberships, or prior services. Must be presented at time of service. Limit 1 per household. Cannot be combined with other offers, discounts, or promotions. No cash value. Restrictions may apply.
Check out our most recent reviews, and then call us for service!










Drain clearing shouldn’t feel like a guessing game where you worry about overcharging or unnecessary work. We inspect your system thoroughly, explain what we find in plain language, and only recommend services your drains genuinely need. You get fair pricing, quality workmanship, and complete transparency about costs. We don’t use pressure to sell unnecessary services and we won’t surprise you with hidden charges.
Slow drains and standard clogs almost always respond to professional cleaning. If sewage is backing up into multiple fixtures simultaneously, or the ground near your cleanout is wet, the issue is likely in the main sewer line. Sherlock diagnoses what’s actually happening before recommending work.
Yes. Cast iron is a regular part of the work across San Diego’s older housing stock. Sherlock works with all pipe materials and older central San Diego homes with cast iron drain systems from the early to mid-1900s are a routine part of the workload.
Camera inspection is available throughout San Diego. For older homes in neighborhoods like Mission Hills or Bankers Hill where pipe systems date to the early 1900s, or for homes where partial repiping has created hybrid systems, a camera is often the most efficient first step.
It can. Homes where old cast iron or galvanized connects to newer ABS or PVC at transition joints have common problem spots at those junctions. Root intrusion tends to concentrate at those points as well. Sherlock checks for transition joint issues during every diagnostic visit when older San Diego plumbing is involved.