AC REPAIR

When your air conditioner quits on a hot afternoon, you need a technician who will find the actual problem — not sell you a new system you may not need. Mars HVAC provides AC repair for homes and businesses across Los Angeles and Orange County. As a licensed C-20 HVAC contractor (Mars Construction Industries Corp, CSLB Lic #1138550), we repair all major brands and system types, from older single-stage units in postwar homes to modern variable-speed systems in new construction.

What Our AC Repair Service Includes

Every repair visit starts with a complete diagnostic of the system: airflow, refrigerant charge, compressor and fan operation, thermostat communication, condensate drainage, and the safety controls that protect the equipment. Once we know what failed and why, we explain the findings in plain language, present your repair options, and let you decide how to proceed. Common repairs we perform include:

• Refrigerant leak detection and recharge
• Capacitor, contactor, and control board replacement
• Blower motor and fan motor repair or replacement
• Condensate drain clearing and float switch repair
• Thermostat replacement and calibration
• Frozen coil diagnosis and correction
• Sensor, relay, and wiring repairs within the HVAC equipment

Signs Your Air Conditioner Needs Repair

Air conditioners usually warn you before they fail outright. Call for service if you notice warm air from the vents, weak airflow, short cycling (the system turning on and off every few minutes), ice on the refrigerant lines or coil, grinding, squealing, or banging noises, water pooling around the indoor unit, or rooms that no longer reach the thermostat setting. Catching these issues early often means a simpler, less expensive repair and helps you avoid a complete breakdown during a heat wave.

What to Expect From Our Repair Process

We schedule a visit that fits your day, arrive with the parts and tools most repairs require, and protect your home while we work. After diagnosing the system, we walk you through the problem and the options — including the honest cases where a repair is not the smart money and replacement deserves consideration. If you approve the repair, we complete it, verify temperatures and pressures, and make sure the system cycles correctly before we leave. Regular maintenance afterward helps prevent repeat failures.

Mars HVAC serves communities across the region — see our areas served page for the full list of cities. When your AC stops keeping up, call us at 310.880.9718 or request service online.

AC Repair Questions We Hear Often

Can my air conditioner be repaired, or does it need to be replaced? Most breakdowns — failed capacitors, contactors, motors, sensors, and refrigerant leaks — are repairable, and we will always give you the repair option first when it makes sense. Replacement enters the conversation when the repair is major, the system is well into its service life, or breakdowns have become a pattern. Either way, you will see the reasoning, not just a recommendation.

Should I keep running the system until my appointment? If the system is cooling poorly but quietly, it is usually fine to run it briefly while you wait. If it is making grinding or screeching noises, producing a burning smell, tripping breakers, or icing over heavily, switch it off at the thermostat and let it rest — running a system in that condition can turn a modest repair into a major one.

How can I avoid another breakdown? Most of the failures we repair trace back to skipped maintenance: dirty coils, clogged drains, and worn components that a tune-up would have caught. After your repair, ask us about a maintenance plan so the system gets looked at before each season instead of after the next failure.