Commercial buildings rely heavily on rooftop HVAC units for consistent cooling, heating, and ventilation. When an RTU develops problems, poor airflow, warm air, strange noises, or rising energy bills, it can disrupt business operations. Big H & A Solutions provides expert rooftop unit repair to restore comfort, efficiency, and safe performance in all commercial environments.
Our technicians service all major rooftop HVAC systems and deliver fast diagnostics, accurate repairs, and long-term solutions designed for California’s climate.
Our rooftop AC repair service addresses cooling problems such as weak airflow, warm air, frozen coils, compressor issues, and electrical faults. We troubleshoot commercial rooftop HVAC systems, restore performance, and ensure your building receives consistent cooling even during peak Southern California heat.
When rooftop heaters fail to warm your building, we diagnose ignition problems, blower failures, cracked heat exchangers, and thermostat communication issues. Our rooftop heating repair restores reliable heat distribution, improves energy performance, and keeps your commercial space comfortable during cooler months.
Electrical issues are a leading cause of rooftop HVAC failure. We repair damaged wiring, faulty relays, control boards, sensors, and contactors. Our RTU repair service ensures safe electrical performance, accurate system response, and stable heating or cooling throughout your commercial property.
If your rooftop AC is not cooling properly, a refrigerant leak may be the cause. We locate leaks using advanced diagnostics, repair damaged lines, and recharge the system to restore full cooling capacity while improving efficiency and reducing energy waste across your building.
Dirty coils reduce cooling output and overwork rooftop HVAC units. Our RTU coil cleaning service removes debris, improves airflow, and restores efficiency. This service lowers energy costs, prevents overheating, and keeps rooftop units performing reliably during long commercial operating hours.
Blower motors are critical for distributing air through your building. We repair or replace worn blower wheels, motors, belts, and bearings. Our rooftop AC repair ensures strong airflow, quiet operation, and dependable heating and cooling within commercial spaces of all sizes.
When your rooftop HVAC system fails unexpectedly, our emergency rooftop unit repair provides fast response, professional diagnostics, and on-the-spot solutions. We minimize downtime, restore comfort quickly, and ensure your workplace stays operational, even during extreme temperatures or peak business hours.
We specialize in commercial rooftop HVAC repair, troubleshooting RTU cooling, heating, electrical, and airflow problems with precision. Our experience ensures reliable performance, improved comfort, and cost-effective repairs tailored to business environments.
We quickly identify rooftop AC issues using advanced diagnostic tools and repair methods. This reduces downtime, prevents repeated failures, and restores efficient performance across your commercial space.
We repair Carrier, Trane, Lennox, Daikin, York, and Goodman rooftop units. Our technicians follow manufacturer guidelines to ensure safe, effective repairs that extend system lifespan and enhance reliability.
Our repairs improve airflow, reduce strain, eliminate inefficiencies, and optimize rooftop HVAC operation. Businesses benefit from lower utility costs, improved comfort, and long-term dependable heating and cooling.
We offer 0% APR financing for repairs or installations. This helps customers manage air conditioning repair costs more comfortably, especially during unexpected cooling failures in Southern California.
Rooftop repairs occur outside the workspace, allowing your business to continue operating smoothly. We work efficiently and safely to restore comfort without interfering with daily activities.
We inspect mechanical components, electrical systems, coils, refrigerant pressure, and airflow performance to identify the exact rooftop HVAC issue affecting cooling, heating, or ventilation.
We repair motors, coils, wiring, refrigerant lines, valves, and control components. Every repair focuses on restoring safe, efficient rooftop HVAC performance across your entire building.
We verify cooling output, heating performance, airflow distribution, thermostat communication, and electrical safety. The rooftop system is optimized to deliver stable, energy-efficient comfort.
Restore your building’s comfort and efficiency with expert rooftop HVAC repair. Call (747) 234-5044 or book your rooftop unit service online.
Most businesses search for this problem. Common causes include dirty coils, low refrigerant, compressor failure, blocked airflow, or control issues. Our rooftop AC repair service identifies the exact cause and restores cooling.
Simple RTU repairs can take one to two hours. More complex issues, motors, compressors, or electrical repairs, may require additional time. We offer fast diagnostics to minimize business downtime.
Noises often indicate failing motors, loose belts, worn bearings, or blower wheel issues. Our rooftop HVAC repair service resolves these issues early to prevent major breakdowns.
Frozen coils usually result from refrigerant leaks, low airflow, dirty coils, or malfunctioning sensors. We diagnose and fix the root cause to prevent future freezing.
If repairs are frequent, energy bills are rising, or the RTU is over 12–15 years old, replacement may be more cost-effective. We evaluate performance and guide you clearly.
