Installation of central air conditioning systems (split, packaged, and ductless mini-splits)

  • Replacement and upgrade of old or inefficient AC units for improved performance and energy savings

  • Comprehensive seasonal tune-ups and preventive maintenance to extend system life and maintain peak efficiency

  • Emergency AC repair services—fast diagnostics and same-day or next-day repairs for compressor, fan, capacitor, and refrigerant issues

  • Refrigerant leak detection, recovery, and safe recharging with EPA-compliant handling of refrigerants

  • Airflow diagnostics and ductwork inspection, repair, sealing, and replacement to eliminate leaks and balance airflow

  • Thermostat installation and programming, including smart and Wi‑Fi thermostats for better comfort control and energy management

  • Indoor air quality solutions: high-efficiency air filters, UV germicidal lights, whole-home air purifiers, and humidification/dehumidification systems

  • Coil cleaning (evaporator and condenser), fin straightening, and condenser unit maintenance to prevent breakdowns

  • Compressor and condenser motor replacement and major component rebuilds when needed

  • System retrofits and efficiency upgrades: variable-speed blowers, two-stage compressors, and improved refrigerant lines for optimized operation

  • Zoning system design and installation to provide customized temperature control for different areas of the home or building

  • Commercial cooling services: rooftop unit installation, maintenance contracts, and rapid-response repairs for businesses

  • Preventive maintenance agreements with scheduled inspections, priority service, and discounts on parts and labor

  • Post-installation performance verification and customer walkthroughs to ensure system operates to specification and homeowners understand controls

Sepulveda’s Plumbing Heating & Air LLC