# Proactive Plumbing Inc

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

Proactive Plumbing is a San Marcos plumbing company on CSLB C-36 license #937646, verified current and active and originally issued in September 2009 — a date that matches the site's since-2009 claim. Its water heater page details a concrete install scope: code-compliant connections, gas and venting safety checks, expansion tanks where required, earthquake strapping, and haul-away, with Rinnai, Navien, Bradford White, and A.O. Smith named as brands. It claims 24/7 emergency dispatch — the site says dispatch explicitly — with weekend office hours listed as emergency-only.

## At a glance

- **Location:** San Marcos, CA
- **CSLB license:** #937646 C-36 (CSLB-verified)
- **24/7 availability:** Yes — company-published "24/7 Emergency Dispatch" — the site says dispatch explicitly; weekend office hours are emergency-only
- **Same-day service:** —
- **Financing:** Yes
- **Website:** https://proactiveplumbinginc.com
- **Phone:** (760) 798-1167
- **Pricing:** Claims upfront pricing before any work starts; no published rates
- **Warranty:** Site claims "extensive parts and labor warranties" and a workmanship guarantee — no written terms or durations published
- **Service areas:** San Marcos, Vista, Escondido, Carlsbad, Oceanside, Encinitas, Solana Beach, Rancho Santa Fe, Del Mar, Bonsall, Fallbrook, Rancho Bernardo, Poway, San Diego

## Observed strengths

- CSLB license #937646 (C-36 Plumbing) verified current and active; the September 2009 issue date matches the company's founding claim
- Water heater page documents a specific install scope: code-compliant connections, gas and venting checks, expansion tanks when required, earthquake strapping, and haul-away
- Installs heat pump water heaters and names four major brands (Rinnai, Navien, Bradford White, A.O. Smith)

## Ask before hiring

- Ask the actual durations of the "extensive parts and labor warranties" — no terms are published
- Ask which financing providers it partners with and what plans are offered
- Confirm whether same-day non-emergency service is available, or only 24/7 emergency dispatch

## Sources we checked

- [Proactive Plumbing homepage (services, phone, San Marcos address, 24/7 dispatch claim, since-2009 claim, license number, warranty and financing claims)](https://proactiveplumbinginc.com) — checked 2026-06-10
- [Proactive Plumbing water heater page (repair scope, install scope incl. expansion tanks and gas/venting checks, tankless and heat pump water heaters, brands, upfront pricing claim)](https://proactiveplumbinginc.com/plumbing-services/water-heater/) — checked 2026-06-10
- [CSLB license detail 937646 (PROACTIVE PLUMBING INC; C36; active; issued 09/10/2009, reissued 06/16/2010; expires 06/30/2028)](https://www.cslb.ca.gov/onlineservices/checklicenseII/LicenseDetail.aspx?LicNum=937646) — checked 2026-06-10

Canonical page: https://www.sandiegowaterheater.com/company/proactive-plumbing/

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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._