HomeCrafto
Menu
Quick search

Popular Trades

PlumbersElectriciansHVAC & ClimateGeneral ContractorsRoofersAll 22 trade categories →

Locations & GPS

Use my locationNew York City, NYSeattle, WAAustin, TXStamford, CTAll open cities →

Homeowner Toolkit

Match project to tradePrepare project briefCompare records (0/3)Saved records on deviceHow our data works →
Sign in

Heating & cooling in Livermore

Compare 50 active HVAC contractors with a registered address in Livermore (Alameda County, California). Records are sourced directly from the California Contractors State License Board (CA CSLB) under California Business and Professions Code Division 3, Chapter 9 (Contractors License Law: Class A, Class B General Building, and Class C Specialty Classifications with $25,000 Bond Requirement); confirm municipal permit requirements with Livermore before starting work. A credential from another jurisdiction does not establish authorization to work here.

Illustration for Heating & cooling
Illustration, not a business photoPrepare brief →

Local guidance checked October 29, 2026 · CA CSLB Official License Verification. Confirm the requirements for your project with the city.

50 heating & cooling records · Livermore

Change
Public Directory Quality: Public source records in Livermore · Zero sponsored order · Never sold as a lead · How our data works →

Heating & cooling directory

50 matching records · 25 on this page · Contactable records first, then alphabetical within groups. Coverage is the matched city/category scope.

Prepare briefCompare records (0/3)

Hours, insurance, reviews and service coverage are not established by a license-file entry.

Show registered-address map (25 records on this page)2 approximate areas

Shaded areas mark approximate postal or city locations, not premises or service areas. Circle sizes are illustrative, not postal boundaries. Some records share the same area. Private addresses are excluded.

17ZIP 945518ZIP 94550Approximate postal/city centroid schematic (2 areas)

Open this map to load OpenStreetMap tiles. Your browser will connect to OpenStreetMap and the map library provider.

Open area in OpenStreetMap ↗ · Report a map issue

Before the first call

  • Describe the job and ask whether it is within their scope and service area.
  • Check the credential with its issuing authority and ask what applies where the work will happen.
  • Ask about insurance, availability, who will do the work, and a written scope.
  • Ask about callout fees, labor or fixed rates, materials, cancellation and any estimate charge.
Prepare a project brief

Verification Overview & Key Takeaways: How to Check Official Credentials

HomeCrafto displays source records with different scopes, including licenses, registrations, municipal permits and community records. A source entry is not proof of qualification for your job. Before signing a work order or paying a deposit, homeowners should confirm that the contractor’s credential number is active, verify that the license classification covers the specific trade scope required for the job, and request a current Certificate of Insurance (COI) directly from the issuing insurance carrier. Independent verification protects your property and ensures compliance with local building codes.

How do you verify a contractor license number and insurance on official portals (FAQ)?

You can verify active license standing and consumer protection rules directly through official government portals, including Washington L&I Contractor Verify, the California Contractors State License Board (CSLB), the Connecticut eLicense Portal, USA.gov State Consumer Protection Offices, and FTC Home Improvement Consumer Guidance. Always confirm municipal permit requirements with your local building department before work begins.

Saved records

Your location, saves and comparison stay on this device and do not sync to an account.

Alameda County, California Trade Directory

Compare heating & cooling across Alameda County or view the California State Hub (CA CSLB).

All Alameda County OaklandFremontHaywardBerkeleySan LeandroPleasantonAlamedaUnion CityDublinNewark