rating iconrating iconrating icon

Sudden AC Failure

sudden ac failure

6 Most Likely Reasons Why Your AC Is Not Working

Air conditioning issues are always troublesome to deal with but become even more of a nuisance on a hot summer day when you need AC the most. In the valley and southern California during the summer it can get to be in the triple digits, on these days you definitely need your AC working. However, no matter what condition your unit is in there is always a small chance it can face sudden ac failure. Usually when an air conditioner stops working there is always a reason why. Below we discuss some common reasons for sudden ac failure.

Thermostat Malfunction

If you are suffering from sudden ac failure the first thing to check is your thermostat. Check your thermostat to see if it is on. If your thermostat has stopped working then your air conditioner will not turn on, even if there are no issues with the ac itself. Check that the thermostat is set to the right temperature and cool setting. It may also be that your thermostat needs new batteries or needs a repair. The thermostat controls the HVAC system, and it is important to keep it in good working condition. The thermostat is not always the reason for sudden ac failure, but you should always check it first.

Tripped Breaker

If your thermostat is not the culprit for your sudden ac failure, check your circuit box to see if a breaker tripped. Switch the breaker back on and try to turn your AC on again. A tripped breaker can be caused by electrical problems in the home or from an AC overheating.

AC Unit is in “OFF” mode

Depending on the type of unit you have, your system may be in the off mode. If any of the switches were turned off by accident, then your ac will not turn on. It could be the emergency shutoff switch which is located near the condenser unit. Try to turn it to the on position and test your ac again.

Clogged Air Filter

Your ac requires unrestricted air flow. If you hear your ac turn on, but are not receiving any cool air, a clogged filter could be the culprit. Dirty clogged air filters could also be the cause for overheating leading to a tripped breaker mentioned above. Air filters work by capturing dirt, dust and other particles from entering your HVAC system. If not replaced, air filters can become clogged restricting airflow and reducing efficacy. Consult your manual to learn more about the type of filter your system requires. Check your air filter at least once a month and replace as needed.

Dirty Condenser

Another issue that could lead to restricted air flow is a dirty condenser. The condenser is the part of the system that is outdoors. As the condenser sucks in air to cool it can bring in outdoor debris such as leaves and other foliage. Turn off the power to the condenser and check if there is any blockage. Inside your home also check your vents and grilles. Removing anything that may be causing restricted airflow may solve the issue.

Lack of Maintenance

Lack of routine maintenance could also lead to sudden ac failure. Routine maintenance can help minimize the need for unexpected or costly repairs on a day when you need your ac the most. The manufacturer of the system will have guidelines for you to follow, but we recommend maintenance at least once every 6 months.

Contact LA Construction, Heating and Air

There are various reasons that can lead to sudden ac failure. Give LA Construction, Heating and Air a call today at 818-341-3406 to schedule a service call for ac repair or you may also contact us online. We are ready to help you get your AC back up and running fast to stay cool and comfortable in your home this summer.

Sudden AC Failure Related Posts:

Our Services

Air Conditioning Installation

For AC installation, our certified team ensures a professional and seamless AC replacement process. We perform a detailed load calculation to select the perfect AC unit for maximum energy efficiency. We handle everything from ductless mini-split systems to full HVAC system installation, guaranteeing a quality AC installation service that keeps you cool and saves you money. Learn more

two air conditioning units near los angeles
Technician talking to customer about ac

Heating Installation

We provide expert heating installation and furnace replacement services. Our certified technicians perform a thorough load calculation to recommend the best and most energy-efficient furnace installation. We manage every detail of your new heating system installation, from start to finish, to deliver a high-quality, reliable, and professional heating installation service.
Learn more

Air Conditioning Repair

At home or at your workplace, there's always the potential for sudden HVAC operating failure and the need for immediate HVAC repair. We'll put you back into the comfort zone ASAP. Our technicians are experienced, EPA certified, trained, background checked, drug tested, Workers' Compensation insured, uniformed, professional, and honest. They will diagnose your system and provide you with a written estimate for repairs.

Technician working with gauges near condenser
Person working on indoor ac unit

Heating Repair

When your heating fails, our team provides prompt and professional heating repair and furnace repair. We are experts at diagnosing and fixing a wide range of issues. We offer fast emergency heating repair to minimize your business's downtime, delivering reliable heating service that ensures your system runs safely and efficiently all winter. Learn more

Air Quality

Whether you're at home or at work, your health and comfort can be affected by poor air quality. And, the air quality is affected by the air temperature, the humidity, the quality of ventilation and any contaminants or irritants like indoor pets, pollen, dust mites, cleaning products, lead, Formaldehyde and Asbestos, Poor Air Flow, mildew and mold. Poor air quality can cause more than slight discomfort - much more!

Picture of zipper opening up on Los Angeles
HVAC Technician working on a unit on rooftop

Maintenance

As Benjamin Franklin said, an ounce of prevention is worth a pound of cure. Same idea applies to your central heater and air conditioner maintenance.Think of it as an oil change for your auto, which improves your car's engine performance, maximizes your gas millage and minimized down time by avoiding unnecessary repairs.

What our clients say

Shape- Social Media IconShape BG CTA

New In Our Blog

Piggy Bank with cash falling out near AC

Attic Fan Installation for Los Angeles Homes

Boost comfort in your Los Angeles home with attic fan installation. Discover how attic ventilation improves AC efficiency, protects your home, and keeps it cooler—especially when paired with a new AC installation.

Piggy Bank with cash falling out near AC

BWP Heat Pump Rebates & Installation in Burbank | Save Now

Learn how BWP heat pump rebates can lower your AC replacement costs. Maximize heat pump savings—contact LA Construction, Heating and Air for a free estimate.

Piggy Bank with cash falling out near AC

Air Conditioning Service for Los Angeles

Need air conditioning service in Los Angeles? LA Construction, Heating and Air provides expert AC maintenance, repair, and installation to keep your home or business perfectly cool.

Piggy Bank with cash falling out near AC

Commercial AC Repair: Recognizing the Red Flags in Your LA Business

Don't let a failing commercial AC disrupt your Los Angeles business. This guide helps you identify critical signs of trouble, from weak airflow to rising energy costs, ensuring timely commercial AC repair or installation.

Piggy Bank with cash falling out near AC

Expert AC Installation: Crucial for Longevity & Efficiency

Discover why professional AC installation in Los Angeles is crucial for peak performance & longevity. Avoid costly DIY risks. Trust LA Construction, Heating and Air for expert AC installation service!

Piggy Bank with cash falling out near AC

The Long Term Value of a New HVAC System Installation

Beyond the price tag: Discover true HVAC value. Explore energy savings, lifespan, warranty, and maintenance costs after professional HVAC installation for long-term home comfort.

We Install and Service All Major Makes and Models