Our Expertise
Phase Change Mechanical delivers expert commercial and industrial HVAC solutions across San Diego County. With over 22 years of combined experience, we specialize in exceptional maintenance, successful repairs, equipment retrofit, and controls management for Chillers, RTUs, and any complex systems.
Commercial HVAC Maintenance & Repair
Commercial HVAC Installation & Retrofit
Commercial HVAC Installation & Retrofit
Phase Change Mechanical specializes in commercial as well as industrial HVAC maintenance including complex repairs.
We offers expert diagnostics, precision repairs, and preventive maintenance programs tailored to your building needs. Servicing any major mechanical systems—Chillers, Cooling Towers, Rooftop Units, Boilers, and Air Handlers—
Phase Change Mechanical specializes in commercial as well as industrial HVAC maintenance including complex repairs.
We offers expert diagnostics, precision repairs, and preventive maintenance programs tailored to your building needs. Servicing any major mechanical systems—Chillers, Cooling Towers, Rooftop Units, Boilers, and Air Handlers—to keep your facility operating efficiently and reliably at all times.
We are committed to delivering fast response times on emergency repairs and service needs with honest communication, and long-term system performance.
Commercial HVAC Installation & Retrofit
Commercial HVAC Installation & Retrofit
Commercial HVAC Installation & Retrofit
We handle all phases of the process: From design and equipment selection to installation and commissioning.
Delivering complete HVAC installation and retrofit services for commercial and industrial facilities. Upgrading outdated systems, installing new equipment, our team provides precise, code-compliant work focused on performance, relia
We handle all phases of the process: From design and equipment selection to installation and commissioning.
Delivering complete HVAC installation and retrofit services for commercial and industrial facilities. Upgrading outdated systems, installing new equipment, our team provides precise, code-compliant work focused on performance, reliability, and energy efficiency.
We have got you cover offering system installation of equipment including but not limited to; Chillers, Cooling Towers, Air Handlers, Rooftop Units, and DDC/BMS Controls.
Every project is completed with expert craftsmanship, effective communication, and minimal downtime for your operations.
Controls & Automation (DDC/BMS)
Commercial HVAC Installation & Retrofit
Controls & Automation (DDC/BMS)
We provide HVAC controls and automation services. Our team designs, installs, and services Direct Digital Control (DDC) and Building Management Systems (BMS) that enhances efficiency, comfort, and visibility across all mechanical equipment. From integrating new control platforms to optimizing existing automation, we provide solutions that
We provide HVAC controls and automation services. Our team designs, installs, and services Direct Digital Control (DDC) and Building Management Systems (BMS) that enhances efficiency, comfort, and visibility across all mechanical equipment. From integrating new control platforms to optimizing existing automation, we provide solutions that reduce energy consumption, streamline effective operations and extend equipment lifetime expectancy.
In need of a full building automation retrofit or advanced troubleshooting? We deliver precise, reliable, and data-driven results tailored to your facility needs.