Why Did My AC Stop Working: 8 Possible Causes


Your home’s HVAC system provides essential indoor climate control functions to combat seasonal temperature extremes. While air conditioning was once a luxury, over 90% of Americans now have these systems. 

Air conditioners feature many complex mechanisms. It’s not uncommon for homeowners to face AC breakdowns that leave them wondering, “why did my AC stop working?” Understanding the different causes of HVAC breakdowns helps address issues quickly and restore your indoor climate control.

When you need assistance resolving HVAC problems, it’s time to call Westerville’s professional AC repair service from World Class Services. Our experienced technicians provide efficient repairs and excellent customer service to restore your home’s comfort.

8 Reasons Why AC Stops Working

When your air conditioner only blows warm air or stops working completely, you may ask “why did my AC stop working?” Read on to learn about eight common causes of AC breakdowns.

Clogged or Dirty Air Filter

While dirty air filters are common, failing to replace them on time could cause significant debris buildup and clog them completely. Not only will you notice decreased air flow, but your air quality may worsen and aggravate respiratory issues.

Allow professionals to routinely replace your air filters and avoid this malfunction altogether. Clean air filters increase HVAC efficiency, improve air quality, and contribute to lower energy expenses. Don’t let this simple problem stop effective air conditioning in your home.

Leaking or Low Refrigerant

Refrigerant is the chemical responsible for removing warmth from your home’s air. During air cycling, your unit’s condenser and evaporator coils change refrigerant from a liquid to a gas, cooling the air as it passes over the coils. 

When refrigerant levels get low, you might notice warmer air blowing through your system or a complete breakdown of your AC unit functions. Usually caused by leaks, this chemical can freeze your unit, causing damage if not addressed quickly. If you notice frost or liquids leaking from your unit, call professionals.

Mechanical Failures

There are numerous complex mechanisms involved in HVAC functioning. Parts like your evaporator coil, condenser coil, blower motor, heat exchanger, air handler, and fans all play a significant role cycling air through your system. Mechanical failures with any of these parts could require professional repairs.

Outdated Thermostat

An outdated thermostat may not be able to service your air conditioner. Depending on the age of your system, an old thermostat may not have sufficient technological capabilities to trigger the proper mechanisms necessary for temperature control. If your AC stops working, call professionals to inspect or replace your thermostat.

Thermostat is Too Small and Weak for Your Unit

Your thermostat needs to have adequate capacity for the size and power of your HVAC unit. If your thermostat is too small or weak for your system, it could cause frequent disrepair and inconsistencies in air conditioning. Call your HVAC professionals to upgrade your thermostat and ensure it’s suitable for your system.

Inconsistent Cycling

Healthy HVAC units operate in routine, consistent cycles to provide cool air to your home at specified points in the day. Air conditioners approaching a breakdown may start to cycle inconsistently. 

You might notice this if cool air blows at the wrong times or if your AC is unable to fulfill an entire cooling cycle. In this case, professionals should inspect your unit and determine whether a replacement is necessary.

Blocked Outdoor Unit

Your AC’s outdoor unit requires plenty of space to absorb the outdoor air involved in cooling cycles. Placing landscaping or furniture near your outdoor unit might obstruct its ability to absorb this air. 

These obstructions can quickly lead to less efficient functioning or even breakdowns over time. Place your outdoor unit in an area away from bushes, trees, gardens, or outdoor living spaces. 

Blown Fuse or Electrical Issue

Your home’s electrical framework is crucial to healthy HVAC functioning. Sufficient circuit boards and proper wiring allow power to flow into your system, enabling air conditioning cycling.

When power surges or overuse of electricity in your home blow a fuse, it can immediately stop your air conditioner from providing temperature regulation. Other electrical issues like tripped breakers and faulty wiring can also cause problems. Professionals can resolve these problems quickly.

Enlist Professional AC Unit Maintenance from World Class Services

Stop asking “why did my AC stop working?” and hire qualified experts to service your system today. Professionals from World Class Services offer expert solutions for heating, cooling, electrical, and plumbing issues.

For more information about AC installation, maintenance, and repair from top-rated professionals, call (614) 587-8985 and get a free quote from World Class Services in Westerville, OH.

Related Posts

Leave A Reply

Leave a Reply

Your email address will not be published. Required fields are marked *