Who is the highest-scored commercial HVAC or plumbing contractor in Signal Hill, California?

By Registry Score, Advance Mechanical Contractors (Signal Hill, CA) ranks first at 72 out of 100, among 2 scored businesses averaging 52. The score combines public reviews (50 points), digital presence (30) and reach (20); nobody can pay for a higher score.

Signal Hill, California · Commercial

Commercial HVAC & plumbing contractors in Signal Hill, CA

2 commercial HVAC & plumbing contractors in Signal Hill, out of 25 HVAC and plumbing businesses the Registry lists there. Ranked by Registry Score, owner-confirmed records first.

Pros: 2
Avg. score: 52
Scored: 2

Summary

Data last updated October 1, 2026

As of October 1, 2026, the ProComfort Registry lists 2 commercial HVAC & plumbing contractors in Signal Hill, California. 2 have enough public signals for a Registry Score, averaging 52 out of 100; 1 scores 70 or higher. Together they hold 171 public reviews on Google, Yelp and Facebook. The highest-scored is Advance Mechanical Contractors, at 72 out of 100. View Advance Mechanical Contractors.

Counts come straight from the Registry's records. How the Registry Score works

Showing 1–2 of 2

Strong

Advance Mechanical Contractors

Signal Hill, CA 90755 4.7(169 reviews)

HVACPlumbingCommercial

(562) 426-1725 Website

Developing

Signal Mechanical Inc

Signal Hill, CA 90755 4.2(2 reviews)

HVACCommercial

(562) 426-7843 Website

Commercial HVAC & plumbing contractors in Signal Hill: at a glance

How many commercial HVAC & plumbing contractors are in Signal Hill, California?: As of October 1, 2026, the ProComfort Registry lists 2 commercial HVAC & plumbing contractors in Signal Hill, California.
Who is the highest-scored commercial HVAC or plumbing contractor in Signal Hill, California?: By Registry Score, Advance Mechanical Contractors (Signal Hill, CA) ranks first at 72 out of 100, among 2 scored businesses averaging 52. The score combines public reviews (50 points), digital presence (30) and reach (20); nobody can pay for a higher score.
How are commercial HVAC & plumbing contractors in Signal Hill, California ranked?: By Registry Score (0-100, from public reviews, digital presence and reach), with records confirmed by their owners listed first. The full method is at https://procomfortregistry.online/methodology.

What this list includes: businesses whose public category or name points to commercial, industrial or mechanical contracting. Tags come from each business's public category and name, so a company can appear under several trades. Commercial HVAC & plumbing contractors across the US