For years, homeowners and businesses across Southern California have trusted Big H & A Service for complete AC rooftop solutions that keep indoor spaces cool, comfortable, and efficient. Our team of experienced technicians handles every aspect of rooftop AC repair, precise rooftop unit installation and replacement, thorough inspections, and routine maintenance, keeping systems working the way they should. From residential rooftop air conditioner units to large commercial rooftop AC units, we combine advanced tools, expert knowledge, and careful attention to ensure every system performs at its best throughout the year.
What sets us apart is our dedication to quality, speed, and long-lasting results. We tailor each service to meet the unique needs of Southern California homes and businesses while minimizing disruption, extending system life, and providing reliable cooling solutions for every rooftop AC requirement.
Our team performs expert rooftop air conditioner repair using advanced diagnostic tools to identify airflow, compressor, and electrical issues. Each repair restores optimal cooling, ensures efficiency, and extends system life, keeping your rooftop AC operating reliably throughout Southern California heat.
We provide full AC rooftop installation, carefully positioning units for maximum airflow and energy efficiency. Our experts handle connections, system testing, and setup, ensuring each rooftop AC unit integrates seamlessly into your space for consistent, long-lasting cooling performance.
Routine rooftop unit repair and maintenance keeps systems running at peak efficiency. Our service includes coil cleaning, pressure checks, lubrication, and performance tuning, helping prevent unexpected breakdowns and ensuring rooftop AC units continue to deliver dependable comfort year-round.
When a rooftop system reaches the end of its life, we provide complete replacement using the best rooftop AC unit options available. Our technicians carefully remove old units, install modern systems, perform thorough testing, and verify performance to guarantee efficient cooling and long-term reliability.
Comprehensive inspections uncover hidden issues and optimize performance. We examine all mechanical and electrical components, check refrigerant levels, and evaluate efficiency, providing recommendations for installations, emergency rooftop AC repairs, or maintenance so your AC operates flawlessly.
Our technicians hold EPA, BHGS, and C-20 certifications. They handle AC rooftop repair, maintenance, and installations, using accurate diagnostics and safe procedures to deliver expert services or homes, businesses, and RV units.
We complete 90% of AC servicing the same day. Most repair and installation appointments finish within two to four hours, ensuring minimal disruption and restoring cooling comfort quickly for residents and RV AC rooftop systems.
Our team provides energy-efficient upgrades, system tune-ups, and adjustments to reduce costs. We optimize AC rooftop bar units, residential rooftops, and RV systems, extending lifespan, and delivering year-round cooling.
With over 650+ reviews and a 4.9 rating, customers trust Big H & A Service for expert guidance, clear communication, fast scheduling, and professional handling of rooftop AC units and RV installations.
We offer 0% APR financing for installations, repairs, and replacements, helping clients manage costs comfortably. This includes best RV rooftop AC unit solutions, rooftop bars, and residential or commercial systems.
Our pricing is upfront and fair, with no hidden fees. Clients across Southern California rely on us for clear estimates, dependable service, and peace of mind for both residential and commercial rooftop AC units.
Our team begins each service by thoroughly inspecting your system, identifying potential issues, evaluating performance, and assessing overall efficiency to create a precise plan for repair, maintenance, or replacement.
Technicians perform skilled service using modern tools and proven methods, addressing mechanical, electrical, and operational concerns carefully to ensure the system operates safely, efficiently, and reliably throughout the season.
After completing repairs or maintenance, we conduct thorough testing to verify proper operation, confirm efficiency, and ensure every component functions correctly before leaving, guaranteeing complete satisfaction and system readiness.
Don’t let a failing AC rooftop system leave your home or business sweltering in Southern California heat. Call Big H & A Service now for fast, expert repairs, maintenance, or installation, and restore reliable cooling before the temperatures rise.
We provide AC rooftop repair, installation, maintenance, replacement, and inspection for homes, businesses, and RV units throughout Southern California.
With proper maintenance, rooftop AC units can last 12–20 years, depending on usage, system type, and local climate conditions.
Costs vary by system size and type, but we provide free quotes to ensure clear, upfront pricing.
We recommend professional maintenance at least once a year to keep your system efficient, prevent breakdowns, and extend its lifespan.
Yes, we offer emergency rooftop AC repairs across Southern California to restore cooling quickly for homes, businesses, and RV units.
