Professional Ductless Mini Split System Repairs

Is Your Mini Split Not Cooling Like It Used To?

A ductless mini split is one of the most efficient cooling systems but when it starts leaking, blowing warm air, or making strange noises, it’s time to call in the experts.

We specialize in Ductless Mini Split Repairs for all major brands and configurations. Whether you have a single-zone unit or a multi-zone system, our licensed technicians will diagnose the issue fast and restore comfort to your home or workspace.

Limited Time Offer

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

Why Schedule a Mini Split Repair?

Mini splits are efficient, but when something goes wrong, performance drops fast. Timely repairs keep your system running quietly, smoothly, and efficiently.

Restore Cooling Performance

If your system is blowing warm or weak air, we get it cooling properly again.

Prevent Major Failures

Catching leaks, electrical issues, or refrigerant problems early avoids costly damage.

Improve Indoor Comfort

Eliminate hot spots, humidity issues, and inconsistent temperature control.

Lower Energy Usage

A struggling mini split uses far more power — repairs restore efficiency.

Extend System Lifespan

Routine service prevents wear and keeps your system running for years to come.

Why Choose Marathon for Mini Split Repair?

Choosing the right team ensures your mini split performs at its best from day one.

Licensed & Insured

Fully certified technicians with experience on all major AC brands.

Fast, Reliable Repairs

We troubleshoot and fix most issues in a single visit.

Fast, Clean Installations

Most mini split systems are installed the same day without disruptive construction.

Upfront Pricing

Thorough inspection, cleaning, and testing for peak performance.

Trusted Locally

Serving Los Angeles, Riverside & Orange County

Why Choose Marathon for Mini Split Installation?

The process we use to make sure your repair experience is professional and done completely

Thorough System Diagnosis

We inspect electrical components, sensors, filters, refrigerant levels, and control boards to identify the problem accurately.

Honest, Upfront Pricing

You get a clear estimate before any work begins no surprises.

Fast, On-the-Spot Repairs

We carry common mini split parts to complete most repairs during the first visit.

Clean Workmanship

We protect your home during installation and leave no mess behind.

Post-Repair Performance Testing

Before we leave, we make sure your mini split is cooling properly and operating safely.

Common Mini Split Problems We Repair

If your ductless system is acting up, these issues could indicate it’s time for professional service:

Unit Not Blowing Cold Air

Often caused by refrigerant problems, clogged filters, or faulty sensors.

Water or Refrigerant Leaks

Leaks can damage floors, walls, and internal system components.

Strange Noises or Vibration

Grinding, buzzing, or rattling usually means failing electrical or mechanical parts.

Unresponsive Remote or Thermostat Issues

Communication problems between indoor and outdoor units reduce performance.

Brands We Repair

We service all major ductless mini split systems residential and commercial.

and more!

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