# Sherlock Plumbing, Heating & Air

_Company profile on San Diego Water Heater Guide — verified 2026-06-10._

Sherlock Plumbing, Heating & Air is a Carlsbad plumbing and HVAC company whose CSLB license — #1116833, C-36 Plumbing plus C-20 HVAC, verified current and active — is held by M N Mauzy Mechanical Inc dba Sherlock Plumbing Heating and Cooling, reflecting the Mauzy merger the homepage itself announces. It lists distinct water heater service lines for repair, installation, maintenance, and tankless work, claims 24/7 availability with same-day service, and names 22 service-area communities across San Diego County. The license itself is recent, issued February 2024, even though the Sherlock brand is older.

## At a glance

- **Location:** Carlsbad, CA
- **CSLB license:** #1116833 C-36 (CSLB-verified)
- **24/7 availability:** Yes — company-published "Available 24/7"; dispatch vs. phone answering not specified
- **Same-day service:** Yes
- **Financing:** Yes
- **Website:** https://sherlockair.com
- **Phone:** (760) 618-5821
- **Pricing:** Mentions flexible payment options and a financing page; no rates or prices published
- **Service areas:** Carlsbad, San Diego, Oceanside, Escondido, Poway, Vista

## Observed strengths

- CSLB license #1116833 verified current and active with dual C-36 Plumbing and C-20 HVAC classifications
- Homepage lists distinct water heater service lines: repair, installation, maintenance, and tankless
- Publishes 22 named service-area communities across San Diego County

## Ask before hiring

- Ask whether scheduling, dispatch, and warranty service run through Sherlock or Mauzy — the license was issued in February 2024 to M N Mauzy Mechanical Inc after the merger
- Confirm whether "Available 24/7" means technician dispatch or phone answering
- Ask what labor warranty applies to water heater installations — none is published

## Sources we checked

- [Sherlock homepage (services, phone, address, 24/7 and same-day claims, Mauzy merger mention, license number in footer)](https://sherlockair.com) — checked 2026-06-10
- [CSLB license detail 1116833 (entity M N MAUZY MECHANICAL INC dba SHERLOCK PLUMBING HEATING AND COOLING; C20 + C36; active; issued 02/21/2024; expires 02/29/2028)](https://www.cslb.ca.gov/onlineservices/checklicenseII/LicenseDetail.aspx?LicNum=1116833) — checked 2026-06-10

Canonical page: https://www.sandiegowaterheater.com/company/sherlock-plumbing-heating-air/

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_Our editorial rankings follow our published methodology. Companies cannot pay to change their editorial ranking. Some companies may pay for enhanced profiles or clearly labeled sponsored directory placements; sponsorship never affects editorial rank._

_Published by San Diego Water Heater Guide. Guide last updated June 2026._