Professional AC Repair Services

When your air conditioner stops working, comfort disappears fast. We provides fast, reliable AC Repair services to restore cooling, protect your system, and keep your home safe during the hottest days of the year. Our trained HVAC technicians diagnose and repair all AC makes and models, from minor issues to major system failures, so you stay cool when it matters most.

Limited Time Offer

Save on your next cooling service. Check out our current promotions!

Common AC Problems We Fix

Air conditioners can wear down over time, especially during heavy summer use. Our team frequently repairs:

AC Won’t Turn On

Electrical issues, faulty components, or thermostat problems can prevent your system from starting.

Weak or No Airflow

Often caused by clogged filters, blower issues, or frozen evaporator coils.

Uneven Cooling Throughout Your Home

Hot spots or inconsistent temperatures may indicate airflow or ductwork issues.

Strange Noises

Grinding, rattling, buzzing, or squealing usually signal failing internal parts.

Unusual or Burning Odors

Dust buildup, overheating components, or electrical issues need immediate attention.

Thermostat Not Responding

If your AC isn’t matching the set temperature, calibration or wiring may be the cause.

Why Choose Marathon for AC Repairs?

When the heat hits and your AC fails, you need a team you can depend on.

Licensed & Insured

Fully certified technicians with experience on all major AC brands.

Comprehensive Tune-Ups

Thorough inspection, cleaning, and testing for peak performance.

Flexible Scheduling

Convenient appointment windows to fit your routine.

Upfront Pricing

Thorough inspection, cleaning, and testing for peak performance.

Trusted Locally

Serving Los Angeles, Riverside & Orange County

Signs You Need AC Repair

If you notice any of the following, it’s time to schedule a professional repair:

AC Blows Warm Air

A refrigerant, compressor, or airflow issue is preventing proper cooling.

Odd Sounds or Odors

Any new smell or sound is often the first warning of a mechanical or electrical failure.

Unusually High Energy Bills

A struggling AC works harder and consumes more power.

Constant Running or Frequent Cycling

Your system may be overheating, low on refrigerant, or dealing with a failing component.

Older System Showing Wear

If your AC is 10–15+ years old, repairs become more common and urgent.

Serving Los Angeles, Riverside, and Orange Counties

At Marathon Plumbing, Heating, and Air, we’re proud to provide reliable furnace maintenance plans for homeowners and businesses throughout Los Angeles, Riverside, and Orange County. Our reputation is built on transparent pricing, expert service, and a commitment to keeping our customers comfortable year after year.

Los Angeles County

Riverside County

Orange County

San Bernardino

Pasadena

Long Beach

Related Cooling Services

Explore our full range of cooling solutions designed to keep your home running efficiently:

AC Repair

Fast, reliable fixes for all AC makes and models

AC Maintenance Plans

Keep your system running consistently and efficiently

AC Replacement & Installation

Upgrade to a modern, energy-saving system

AC Tune-ups

Annual maintenance to boost efficiency and prevent breakdowns.

Thermostat Services

Smart thermostat installations & repairs

Ductless Mini-Split Services

Installation, repair, and maintenance for high-efficiency zoned cooling systems.

Schedule Your AC Repair Today

Don’t let a small AC issue turn into a major breakdown. Contact Marathon Plumbing, Heating, and Air today for fast, professional AC repair and get your cooling restored quickly.