Inner Sunset Top Heating and Air

Inner Sunset Top Heating and Air serves San Francisco with air conditioning repair, furnace repair, heat pump service, and ductwork installation. The business is open 24/7 and can be reached at (415) 592-6313. It holds a 5.0 rating based on 32 customer reviews.

The company offers filter maintenance and replacement, industrial HVAC installation, and air purifier installation. Its website emphasizes precision, punctuality, and professionalism in both emergency repairs and routine maintenance.

In California, HVAC work is regulated by the Contractors State License Board (CSLB). HVAC contractors must hold a C-20 classification—Warm-Air Heating, Ventilating and Air-Conditioning Contractor. Before hiring any contractor, verify their license through the CSLB online license check tool at cslb.ca.gov. Enter the contractor's license number (an 8-digit number with no letters) or business name to confirm their status and view any complaint disclosures.

Building permits are required for most HVAC work in San Francisco. According to California Building Standards Code, modifications to HVAC systems typically need a separate permit from your local building department. The specific permit requirements vary by project scope and location within the city. Contact the San Francisco Building Department to confirm what permits apply to your planned work before the contractor begins.

When hiring an HVAC contractor, ask to see proof of their current C-20 license and verify it independently through CSLB. Discuss permit requirements for your project and confirm the contractor will handle permitting. Review the contract in detail before signing, including scope of work, timeline, warranty terms, and total cost. Always use a written contract that clearly outlines the work to be performed and payment terms.