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Air conditioning is a necessity in summer allowing us to live in comfortable temperatures. If your AC breaks down, life can be pretty unbearable.

Therefore, it is always a good idea to be aware of the most common problems that can arise with your air conditioning unit. Being aware of the issues can help you prepare and call AC repair in Campbell, CA on time to minimize the discomfort

  1. Clogged or Dirty Filter

It is the most common reason air conditioners don’t work properly. A dirty or clogged filter reduces the flow of air. The filter needs to be cleaned or replaced after a set time duration. Follow the manufacturer’s guidelines on how often to change your air filter.

  1. Refringent Leakage

Another common issue with air conditioners is refringent leakage. It causes temperature and humidity to rise, making the home to be uncomfortable. An HVAC technician can determine whether a refringent leak has occurred. The technician will also determine the location of the refrigerant leak to diagnose the issue.

  1. Clogged Drain Line

Dirt, dust, and lint can clog the drain line, causing water leakage that could potentially damage the AC system. You can schedule a service for AC repair in Campbell, CA with American HVAC Inc. to unclog the clogged drain line and prevent serious damage. A qualified HVAC technician will examine the AC system and clear any debris.

Common signs that indicate a clogged AC drain line include

  • Mouldy smell near your AC unit
  • Water damage near the system
  • Uneven cooling in your home
  • Puddle of water in the drain pan
  1. Dirty Condenser Coils

The AC condenser coils can become dirty due to outdoor elements. With dirty coils, your AC takes longer to cool, decreasing efficiency significantly. When efficiency decreases, you will have to pay more for monthly energy costs. Furthermore, a system with dirty coils will have a shorter lifespan.

  1. Evaporator Coil Issues

The evaporator coil is a vital component of your AC unit that helps achieve comfortable temperatures. Any malfunction that affects proper performance can cause indoor comfort issues.

Signs of damaged evaporator coil include:

  • Unusual noises from the cooling system
  • Rising utility bills
  • Warm air from vents
  • Ice build-up on the coils
  • Unexpected turning on and off
  1. Thermostat Malfunction

In the proper functioning of your heating and cooling system, the thermostat plays a very crucial role. If the thermostat stops working properly, your home will become very uncomfortable. Dust, dirt, and lint can accumulate over time to block the sensors. Exposure to direct sunlight can also lead to thermostat issues. A technician can diagnose the problems with the thermostat and recommend an effective repair for your budget and comfort needs.

  1. Bad Capacitor

The capacitor is a major part of any air conditioning unit that helps the compressor run smoothly. A bad AC capacitor can lead to several issues. The location of the capacitor will vary based on the type of air conditioning system. HVAC technicians use specialized tools to test AC capacitors to determine the source of the problem and make needed repairs.

Some of the symptoms of a bad AC capacitor include

  • The air conditioning unit shuts off unexpectedly
  • Unusually higher energy bills
  • A burning smell from the condenser unit
  • Humming noises
  1. Worn Mechanical Components

Mechanical wear and tear are a common reason for AC issues. Worn bearings, belts, compressors, motors, and other parts can cause performance issues and reduced airflow. When one component is worn down or broken, the whole functioning of the HVAC system is affected, and it can also lead to further damage.

To prevent larger problems, you can schedule regular ac repair in Campbell CA. An HVAC technician can fix and replace worn components. Getting an inspection done by a professional is the best way to protect your HVAC system from too much damage.

  1. Electrical Issues

Electrical problems are another common air conditioning issue faced by homeowners. Electrical issues in your HVAC system can lead to major disruptions and costly repairs. These problems can manifest in various ways which can be prevented by regular maintenance and timely repairs.

Common signs of electrical issues include:

  • Buzzing, humming, or clicking noises
  • A smoky odour near the HVAC unit
  • The HVAC system turns on or off randomly
  • Decrease in cooling efficiency
  1. Neglected Maintenance

Regular maintenance helps prevent unexpected AC breakdowns. Homeowners often don’t pay attention to maintenance and end up spending heavily on costly repairs. Neglecting maintenance is one of the most common reasons for AC issues. With timely maintenance, you can prevent serious issues and save money on costly repairs.

A regular maintenance program not only prevents unexpected breakdowns but also helps reduce your energy costs and increase the lifespan of your HVAC system.


At American HVAC Inc., we are committed to providing you with superior heating and air conditioning services that exceed your expectations. Our experts help keep your air conditioner working more smoothly and prevent costly repairs and electrical bills.

Schedule an appointment for air conditioning maintenance, repair, or installation today.

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