AC Repair in Ontario, CA

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All Pro Cooling, Heating, Plumbing & Electrical has all your air conditioning repair answers under one roof. With nearly 30 years of industry experience, we can quickly and efficiently diagnose problems and offer comprehensive AC repair plans designed to fit your unique needs and budget.

Our Air Conditioning Repair Process – What to Expect from All Pro

We like to keep things simple, transparent, and stress-free. When you reach out to us for AC repair in Ontario, CA, here’s how we make sure your cooling system gets back to peak condition with minimal disruption:

Schedule Your Appointment

It all starts with a quick phone call or online appointment. We’ll work with your schedule to find a time that works best for you. Got an emergency? No worries—our team is ready for emergency repairs too.

In-Depth System Inspection

Our trained technicians arrive on time, friendly, and ready to go. We begin with a detailed assessment of your air conditioner. We check airflow, refrigerant levels, thermostats, and electrical components—nothing gets overlooked.

Honest Diagnosis

After the inspection, we explain the issue in everyday language—no confusing jargon. Whether it’s refrigerant leaks, clogged filters, or electrical issues, we’ll tell you exactly what’s wrong and what needs fixing.

Upfront, No-Surprise Estimates

Before we do anything else, you’ll get a free estimate. You’ll know exactly what the repair involves and what it’ll cost. We’re all about honest pricing and real value.

Quality Repairs That Last

Once you give us the go-ahead, we get to work. Our repairs are thorough and done right the first time. We use top-quality parts and proven techniques to get your AC system back in shape for the long haul.

Final Check & Clean-Up

Before we leave, we test everything to make sure your cooling system is running like new. We clean up our work area so it’s like we were never there—except your AC is now blowing crisp, cool air again!

The Most Common AC Repairs Our Pros Deal With

We’ve seen it all. From minor fixes to complex cooling system repairs, our Ontario team knows how to handle every kind of hiccup your AC unit might throw at you. Here are the most common issues we tackle:

Refrigerant Leaks

Refrigerant leaks are a major culprit when your air conditioner isn’t cooling properly. The refrigerant is what absorbs heat from inside your home and moves it outside. If there’s a leak, your AC system has to work harder—cooling becomes inefficient and energy costs go up. Signs include hissing sounds, ice on coils, or warm air blowing from the vents. Our technicians will locate the source of the leak, seal it, and recharge your system to the proper refrigerant level. We also make sure there’s no further damage to your compressor or other vital components, helping you avoid costly repairs down the line.

Clogged Air Filters

A dirty air filter might seem like a small issue, but it can cause big problems for your HVAC system. Clogged filters restrict airflow, causing your AC unit to strain and run longer cycles, leading to overheating or compressor failure. Weak airflow and increased dust in the home are telltale signs. We always recommend checking filters monthly and changing them every 1-3 months, depending on usage and if you’ve got pets or allergies in the house. It’s one of the easiest ways to prevent unnecessary ac repair in Ontario.

Electrical Issues

Faulty wiring, tripped breakers, or broken capacitors can shut your AC unit down in the blink of an eye. Sometimes, a bad connection or surge can fry components, causing the system to stop completely or cycle on and off constantly. These types of problems require trained technicians because messing with electrical parts can be risky. Our team safely diagnoses the issue, replaces damaged wires or controls, and ensures the system runs smoothly. Don’t ignore unusual noises or the smell of burning plastic—it’s often an electrical red flag.

Frozen Evaporator Coils

Evaporator coils absorb the heat from your home, but when they freeze over, your system can’t cool properly. You might notice warm air from vents, water pooling near the unit, or a complete shutdown. Low refrigerant, restricted airflow, or dirty coils can cause this. Our technicians will defrost the coils, fix the root cause, and clean everything up to ensure proper airflow and cooling. Ignoring frozen coils can cause further damage to your compressor or other internal parts.

Faulty Thermostats

If your thermostat isn’t reading temperatures correctly or communicating with your AC system, you’re going to have uneven temperatures or a system that doesn’t kick on when it should. Older, manual thermostats can drift in accuracy over time, while newer programmable models may just need a battery change or software update. We test calibration, replace defective models, or recommend a smart thermostat upgrade to help boost energy efficiency and keep you comfortable.

Drainage Problems

AC units pull moisture from the air, and that water needs to go somewhere. If the condensate drain is clogged, water backs up into your unit or home. You might notice musty smells, water damage, or a system that won’t turn on due to a triggered safety switch. Regular maintenance can prevent this, but when clogs happen, our team clears the line, checks the pump, and ensures proper drainage. This prevents mold growth and helps maintain indoor air quality.

No matter the issue, we’ve got the tools, experience, and local know-how to resolve it fast. When it comes to AC repair in Ontario, CA, we’re your go-to pros.

Get your free estimate on reliable & effective AC repair in Ontario by calling (909) 500-8193 or contacting us online today!

Why Isn’t My Air Conditioner Working?

Is your home not cooling as efficiently as it used to? Have you noticed any wet spots near your unit that may indicate a leak? Is your unit making unusual noises or producing strange smells? If so, it’s time to contact an Ontario AC repair technician.

When you call All Pro Cooling, Heating, Plumbing & Electrical, we will troubleshoot your AC issue by:

• Checking the air filters to see if they are dirty or clogged
• Inspecting and cleaning the evaporator coil
• Checking for refrigerant leaks
• Looking for issues in the air handler
• Testing for electronic problems

While maintaining your air conditioner is an important part of keeping your system in optimal condition, we understand that sometimes repairs are unavoidable, especially when you have an older AC unit. Remember that one of the simplest things you can do to keep your system running strong is to regularly change your air filter.

When air filters become dirty, they can restrict the flow of air through the unit, which can cause problems with your unit and negatively impact the quality of your indoor air. The average household should change their filter about every 90 days, but households with pets or allergy or asthma sufferers should change their filter more frequently.

Need Emergency Repairs?

Our Ontario air conditioning technicians know that there is never a convenient time for an AC breakdown and they most often happen in the middle of summer when your air conditioner is working overtime to keep you comfortable. All Pro Cooling, Heating, Plumbing & Electrical offers fast and reliable 24-hour emergency repair services when you need us most.

We will come to your home, thoroughly inspect your unit, diagnose the problem, and fix it fast. If your unit is too old or beyond repairs, we can recommend an AC replacement that fits your budget, the size of your property, and your needs, installing it for you quickly to ensure you do not suffer for long.

Recommended Reading:

• 9 Steps to Get Your AC Summer-Ready
• Common Air Conditioning Problems
• These Monthly HVAC Maintenance Tips can Save you Money

Call (909) 500-8193 or contact us online to request your free inspection & estimate on prompt & dependable Ontario AC repair today!