Air Conditioning Repair

When your AC stops cooling during a Southern California heatwave, you need fast, reliable service you can count on. Daniel’s Heating & Air Conditioning provides expert air conditioning repair in Highland, Rancho Cucamonga, Riverside, Redlands, and nearby areas, restoring comfort quickly with honest diagnostics and same-day solutions. Our technicians service all major brands and ensure your system runs efficiently through even the hottest Los Angeles summers.

No Cooling? No Problem.

Get Back to Comfort—Today.

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Understanding AC System Function


Modern split-system and packaged air conditioners rely on balanced refrigerant pressures, calibrated electrical loads, and unobstructed airflow to operate efficiently. A typical system maintains a 20°F delta-T between supply and return air, with subcool and superheat values within ±3°F of design targets.

  • When any component—compressor, TXV, fan motor, capacitor, or control board—deviates from its operating range, the entire thermal transfer cycle collapses. Our goal is to detect these deviations early, isolate the root cause, and return the system to its rated SEER performance.


How We Approach Every Repair Call


Every AC service begins with a comprehensive system diagnostic by a certified technician. We:

  1. Record temperature, pressure, and voltage readings to pinpoint inefficiencies.
  2. Inspect refrigerant charge, airflow (CFM), and static pressure across the ductwork.
  3. Test capacitors, contactors, and compressor amperage draw against design limits.

We’ll explain the findings in plain language, provide an upfront estimate, and stock most replacement parts on our trucks for same-day completion whenever possible.

Daniels technicians work on all major brands—Carrier, Lennox, Trane, Goodman, York, and others—and we’ll never push replacement unless it’s truly warranted.
Our philosophy is simple:
fix it right, fix it fast, fix it fairly.

Why Homeowners Trust Us


For years, Daniels Heating & Air has been a family-owned, locally operated company dedicated to keeping California homes comfortable. We live in the same communities we serve, and our customers know we value:

  • Honesty and transparency in every estimate
  • No-pressure recommendations based on system condition, not commissions
  • Guaranteed workmanship backed by experience and reputation

Read Our Reviews →

When Repair Isn’t Enough


Even the best-maintained system reaches the end of its service life. If your unit is:

  • Over 12–15 years old
  • Requiring frequent major repairs
  • Causing unusually high energy bills

…then replacement may be the more cost-effective option. Our team will walk you through high-efficiency solutions that deliver quieter operation, improved humidity control, and long-term energy savings.

Learn more about AC Replacement →

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The logo for jackson plumbing and heating inc.

Flexible Financing for Unexpected Repairs

A sudden breakdown isn’t something most homeowners plan for. Through our partnership with GoodLeap, qualified customers can access 0% APR financing with:

  • No hidden fees
  • No late penalties
  • No impact on credit score for pre-qualification

Get the comfort you need today without delay.

Frequently Asked Questions

  • How much does AC repair cost in California?

    AC repair costs vary depending on the issue, the age of your system, and the parts required. Minor fixes like replacing a capacitor or unclogging a drain line are often inexpensive and can be done the same day. Larger repairs—like replacing a blower motor or refrigerant coil—require more labor and parts, which raises the cost.


    At Daniel’s, we always provide upfront, transparent pricing before work begins. That means no surprise add-ons or hidden fees after the fact. On average, most homeowners in California can expect to spend between $150–$600 for common AC repairs, but the exact number depends on your system and the complexity of the issue.


    We also understand that breakdowns aren’t always planned. That’s why we offer financing options and same-day service so you don’t have to choose between comfort and cost.

  • Why is my air conditioner blowing warm air?

    If your AC is blowing warm instead of cool air, several issues could be at play. The most common is low refrigerant caused by a leak, which prevents the system from cooling properly. Another possibility is a dirty air filter or clogged evaporator coil, which restricts airflow and reduces performance.


    Electrical issues can also play a role. If the outdoor condenser isn’t running, the fan indoors may still circulate air, but it won’t be cooled. Faulty thermostats or compressor problems can also cause warm air issues.


    Because there are so many potential causes, it’s important to have a professional technician perform a diagnostic. At Daniel’s, we check refrigerant levels, coils, fans, and electrical components so we can quickly determine the exact problem and restore proper cooling.

  • How often should I schedule AC maintenance?

    For homeowners in California, we recommend scheduling annual maintenance in the spring before peak summer heat. This ensures your AC is clean, efficient, and ready to handle extended use during the hottest months.


    Maintenance typically includes cleaning condenser coils, checking refrigerant levels, inspecting electrical connections, lubricating moving parts, and ensuring the thermostat is calibrated. These steps not only keep your home comfortable but also reduce energy bills by improving efficiency.


    Even though California doesn’t have the humidity challenges of the Southeast, dust and dry heat in areas like the Inland Empire can be tough on AC systems. Regular maintenance is the single best way to prevent surprise breakdowns in the middle of a heatwave.

  • What are the most common AC problems in California?

    The most frequent AC issues we see include:


    • Low refrigerant (caused by leaks)
    • Dirty or clogged filters
    • Blocked or leaking ducts
    • Failed capacitors, motors, or compressors
    • Frozen evaporator coils
    • Faulty thermostats

    Many of these problems start small but worsen over time, so catching them early saves money and prevents bigger repairs. The hot, dry climate in much of California also accelerates wear on outdoor units, making coil cleaning and electrical inspections especially important.

  • Should I repair or replace my air conditioner?

    If your system is less than 10 years old and the repair is relatively minor, repairing is almost always the best option. However, if your AC is 12–15 years old, breaks down frequently, or uses outdated R-22 refrigerant (which is no longer manufactured), replacement may be more cost-effective.


    Newer air conditioners are much more energy-efficient, with higher SEER ratings that lower your utility bills. In California, where AC can be a significant portion of your summer energy costs, these savings quickly add up.


    At Daniel’s, our technicians will always provide an honest assessment. If your unit can be fixed affordably, we’ll repair it. If replacement makes more sense long-term, we’ll explain your options clearly so you can make the best choice.

  • Why is my AC making strange noises?

    Because there are so many potential causes, it’s important to have a professional technician perform a diagnostic. At Daniel’s, we check refrigerant levels, coils, fans, and electrical components so we can quickly determine the exact problem and restore proper cooling.
  • Why does my AC keep turning on and off (short cycling)?