AirOstat, Inc

AirOstat serves Los Angeles with residential and commercial HVAC work. The business holds a 5.0 rating from 43 reviews and operates 24 hours Monday through Saturday.

Services include AC and furnace installation, repair, and preventive maintenance for homes and businesses. The company also handles ductless mini splits, VRF systems, cooling towers, chillers, boiler work, and refrigeration. Reach AirOstat at (844) 247-6782 to request a free estimate.

HVAC work in Los Angeles often requires a building permit. According to California Building Standards Code, no structure may be erected, constructed, enlarged, altered, repaired, or improved unless a separate permit has first been obtained from the building official. Code requirements vary by city and county, so check with your local building department—in Los Angeles, that's the Los Angeles Department of Building and Safety—to find out what's needed for your project.

California requires HVAC contractors to hold a license. The relevant license type is C-20, the Warm-Air Heating, Ventilating and Air-Conditioning Contractor license. Before hiring, verify the contractor's license through the California Contractors State License Board (CSLB) online system. You can search by license number, business name, or the contractor's name. The license number contains only numbers and is up to 8 digits long.

When selecting an HVAC contractor, ask about their license status and verify it with CSLB. Confirm which services they provide and whether your project will need a permit from the Los Angeles Department of Building and Safety. Get a written contract that clearly outlines the work, materials, and cost before signing.