Commercial HVAC Emergency Service

Commercial HVAC Emergency Service for All Property Types

Serving Office Buildings, Retail Centers, Stand-Alone Properties & More

A failing HVAC system can force closures, reduce productivity, or even violate safety codes. That’s why we provide emergency HVAC repairs for commercial buildings, including:

• Rooftop units (RTUs)
• Split systems and packaged units
• Variable refrigerant flow (VRF) and multi-zone systems
• Ceiling-mounted or wall-mounted units

Our trucks are stocked with the tools and parts needed to complete many repairs during the first visit, even after hours. If a repair can’t be completed immediately, we offer temporary solutions and prioritize follow-up work.

Fast Repairs for Apartments, Condos, Duplexes, and Multi-Unit Complexes

In multi-family buildings, HVAC failures can affect dozens of residents and quickly lead to service complaints or habitability concerns. Aquinas HVAC is trusted by property managers across California for reliable multi-family HVAC emergency service, any time of day or night.

We respond to:

• Central system failures affecting entire buildings
• Mini-split and ductless issues in individual units
• Shared equipment malfunctions across multiple floors
• Gas or electrical hazards tied to HVAC operation

We understand the urgency, the scale, and the communication needed in tenant-focused emergencies—and we act accordingly. For long-term prevention strategies, we also recommend Simplify HVAC Maintenance: A Guide for California Property Managers.

24-Hour Emergency Air Conditioning Service

Sudden AC failure can quickly cause discomfort in commercial spaces or health risks in dense multi-family housing. Our team provides 24/7 emergency air conditioning repairs across all system types, including:

• Rooftop and packaged cooling systems
• Ductless mini-splits and multi-zone AC units
• Split systems and central cooling

Whether your unit is blowing warm air, making loud noises, or has stopped completely, we’ll identify the cause and restore cooling—fast.

Emergency Heating Repairs for Commercial and Multi-Family Properties

Cold conditions can be just as disruptive. A failed heating system can cause problems with both tenants, employees, and customers — situations we cover in detail in Inside a Heat Emergency: Handling Commercial HVAC Repairs Fast.

A failed heating system can cause problems with both tenants, employees, and customers. Aquinas HVAC handles emergency heating repairs for:

• Gas and electric furnaces
• Heat pumps
• Wall-mounted commercial heating units
• Radiant and ductless systems

Our technicians are equipped to work across a wide range of system types, and we’re available 24/7 for emergency diagnostics and repair.

Why Choose Aquinas HVAC for Emergency Repairs

We Specialize in Complex Commercial and Multi-Family Systems

We’re not a residential HVAC contractor. Our team is built for the demands of larger-scale properties—where system access, tenant coordination, and building infrastructure require a more advanced level of service.

Emergency Dispatch 24 Hours a Day

With locations in Santa Ana, San Diego, and Santa Clara, we’re positioned to serve businesses and multi-family properties across California. Our dispatch process is streamlined, and emergency calls go directly to an on-call technician, not an answering service.

Trusted by Property Managers and Facility Directors

We’ve built long-standing relationships with commercial property owners, building engineers, and management teams by delivering consistent, professional results under pressure. Whether you operate one building or fifty, we’re ready to respond.