Covina homeowners have trusted Sinclair Air Systems for professional HVAC services since 1980. As a family-owned business, we understand the unique climate challenges Covina residents face—intense summer heat, occasional winter chills, and the need for reliable year-round comfort. Located at 721 E San Bernardino Rd, we’re your neighbors committed to keeping your home comfortable.
AC Repair & Emergency Service — When your air conditioning fails during a Covina summer, our technicians respond quickly. We carry parts and can often complete repairs the same day.
Air Conditioner Installation — We install high-efficiency systems that reduce energy costs and improve cooling performance.
Furnace Installation & Maintenance — We install and service furnace systems to ensure your home stays warm when needed.
Mini Split Systems — Our mini split system installations are perfect for Covina homes—additions, rooms with high sun exposure, or homes where ductwork is impractical.
Commercial HVAC Services — Covina businesses depend on reliable climate control. We serve offices, retail spaces, and facilities.
Living in Covina means dealing with the San Gabriel Valley’s unique climate. Summer temperatures regularly exceed 100 degrees, putting serious strain on air conditioning systems. Many homes in neighborhoods like Charter Oak, Covina Hills, and South Covina were built in the 1950s through 1980s and still have original ductwork that reduces efficiency and drives up energy bills.
Winter brings its own challenges. While Covina doesn’t see freezing temperatures often, the overnight lows in the 30s and 40s mean your furnace needs to be reliable when you need it most. Our technicians frequently see furnaces that haven’t been maintained in years suddenly fail on the first cold night of the season. A simple annual tune-up can prevent most of these emergencies.
Covina homeowners also face rising energy costs from Southern California Edison. Upgrading to a high-efficiency system, whether that’s a modern central AC unit, a heat pump, or a ductless mini split, can reduce your monthly energy bill by 20 to 40 percent. We help you choose the right system for your home’s size, layout, and budget.
Sinclair Air Systems serves every neighborhood in Covina, including Charter Oak, Covina Hills, South Covina, Hollenbeck Park, and the neighborhoods surrounding Covina Valley Unified School District. We also serve homes near San Bernardino Road, Citrus Avenue, and the 210 Freeway corridor. Our shop at 721 E San Bernardino Rd means we can reach most Covina addresses within 15 to 20 minutes for emergency calls.
Most AC repairs in the Covina area range from $150 to $1,200, depending on the issue. Simple fixes like capacitor replacements or thermostat repairs are on the lower end, while compressor or refrigerant leak repairs cost more. We always provide a free estimate before starting any work so there are no surprises.
We recommend annual AC maintenance, ideally in the spring before Covina’s hot summer season begins. Regular maintenance extends the life of your system by 5 to 10 years, prevents breakdowns during heat waves, and keeps your system running at peak efficiency. Our $89 tune-up special is a great way to stay ahead of problems.
If your system is over 15 years old, requires frequent repairs, uses R-22 refrigerant (which has been phased out), or your energy bills keep climbing, it may be time to replace rather than repair. We’ll give you an honest assessment. Sometimes a $300 repair can give you several more years of reliable service, and we’ll tell you that too.
Yes. When your AC goes out during a Covina heat wave, you can’t wait. We offer same-day emergency repair service and carry common parts on our trucks so we can often complete repairs in a single visit. Call us at (626) 331-4541 for immediate assistance.
We work with all major brands including Carrier, Lennox, Trane, Rheem, Goodman, Daikin, and Mitsubishi. Whether you need a repair on an existing system or want to discuss which brand is best for a new installation, our technicians have experience with every major manufacturer.
Yes, we offer flexible financing options to help Covina homeowners invest in a new heating or cooling system without a large upfront cost. We also help you take advantage of current utility rebates and federal tax credits for energy-efficient equipment.
Ready for professional HVAC service in Covina? Call (626) 331-4541 today or book online.
Sinclair Air Systems proudly serves homeowners and businesses throughout the San Gabriel Valley. Visit our service area pages:
Contact Sinclair Air Systems today for a free estimate. Family-owned, serving the San Gabriel Valley since 1980.