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Signal Hill, California · Heating & furnaces

Heating & furnace contractors in Signal Hill, CA

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

Pros
6
Avg. score
55.8
Scored
5

Summary

Data last updated

As of October 1, 2026, the ProComfort Registry lists 6 heating & furnace contractors in Signal Hill, California. Most-listed specialties: air conditioning (4). 5 have enough public signals for a Registry Score, averaging 55.8 out of 100; 2 score 70 or higher. Together they hold 588 public reviews on Google, Yelp and Facebook. The highest-scored is AAA CALVERT Electrical Heating and Air Conditioning, at 77 out of 100. View AAA CALVERT Electrical Heating and Air Conditioning.

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

Showing 1–6 of 6

Heating & furnace contractors in Signal Hill: at a glance

How many heating & furnace contractors are in Signal Hill, California?
As of October 1, 2026, the ProComfort Registry lists 6 heating & furnace contractors in Signal Hill, California.
Who is the highest-scored heating contractor in Signal Hill, California?
By Registry Score, AAA CALVERT Electrical Heating and Air Conditioning (Signal Hill, CA) ranks first at 77 out of 100, among 5 scored businesses averaging 55.8. The score combines public reviews (50 points), digital presence (30) and reach (20); nobody can pay for a higher score.
How are heating & furnace 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 heating: furnaces, boilers, heat pumps or radiant heat. Tags come from each business's public category and name, so a company can appear under several trades. Heating & furnace contractors across the US