If you have noticed that lights flicker when appliances turn on, you are not alone. Many Reno homeowners experience this, especially when large appliances like air conditioners, refrigerators, or washers start up. In some cases, this is normal. In others, it can point to a deeper electrical issue that should not be ignored.
Understanding why lights flicker when appliances turn on can help you determine whether your home is operating safely or if it is time to call a licensed electrician in Reno.
Why Lights Flicker When Appliances Turn On
When a large appliance turns on, it draws a significant amount of power all at once. This sudden demand can cause a brief voltage drop in the house, which results in lights dimming or flickering.
This is especially common with appliances such as:
Air conditioners
Refrigerators
Microwaves
Dishwashers
Clothes dryers
HVAC systems
If the flicker is very brief and only happens occasionally, it may simply be your electrical system responding to a temporary increase in demand. However, if the issue is frequent, worsening, or affects multiple areas of the home, it may indicate a larger problem. <h3>Lights Dim When AC Turns On</h3>
One of the most common complaints in Reno homes is that lights dim when the AC turns on. Air conditioning systems require a large surge of power when the compressor starts. This startup load can cause a noticeable dip in voltage.
In newer homes with modern electrical panels, this effect is usually minimal. In older homes in Reno, NV, the electrical system may not be designed to handle today’s higher energy demands, making the dimming more noticeable.
If your lights flicker when AC starts every time, or if the dimming is significant, it may be a sign that your system is under strain.
Common Causes of Voltage Drop in a House
Voltage drop in a house occurs when the electrical system cannot maintain consistent voltage under load. Several factors can contribute to this issue.
Undersized wiring
If wiring is too small for the electrical load it is carrying, it can struggle to deliver consistent power.
Long circuit runs
The farther electricity has to travel, the more voltage can be lost along the way.
Heavy electrical demand
Running multiple high-power appliances at once can overwhelm certain circuits.
Outdated electrical panels
Older panels may not be equipped to handle modern electrical usage.
Utility supply issues
Sometimes the issue may originate from the power company rather than inside the home.
Understanding the root cause of voltage drop is important, as it helps determine whether the issue is minor or a potential safety concern.
Overloaded Circuit Signs Homeowners Should Know
An overloaded circuit occurs when more electricity is being drawn than the circuit is designed to handle. This is a common cause of lights dim when appliances turn on.
Signs of an overloaded circuit include:
Lights dimming when appliances turn on
Circuit breakers tripping frequently
Warm or discolored outlets
Buzzing sounds from outlets or panels
Multiple lights flickering in the house
If you notice these overloaded circuit signs, it is important to take them seriously. Overloaded circuits can increase the risk of electrical fires if left unaddressed.
Electrical Load Issues in Modern Reno Homes
Modern homes use significantly more electricity than homes built even 20 to 30 years ago. Between large kitchen appliances, HVAC systems, home offices, and EV chargers, the demand on your electrical system has increased dramatically.
In many Reno homes, especially older homes in Reno NV, the original electrical system was never designed for this level of usage. This can lead to electrical load issues in the home, where the system struggles to keep up with demand.
High power appliance electrical issues are often the first sign that your home’s electrical capacity may need to be upgraded.
When Flickering Lights Are a Warning Sign
Not all flickering lights are dangerous, but some situations should raise concern.
You should pay closer attention if:
The flickering is frequent or getting worse
Multiple lights flicker throughout the house
Lights dim significantly when appliances turn on
Flickering occurs even without appliances running
You notice burning smells or hear buzzing sounds
These can be signs of circuit overload symptoms, loose connections, or more serious electrical problems in the home.
Inconsistent power can also damage sensitive electronics over time, making it important to address the issue early.
Why Older Homes in Reno May Be More Affected
Older homes in Reno and throughout Washoe County are more likely to experience issues when lights flicker when appliances turn on.
This is often due to:
Outdated wiring systems
Smaller electrical panels
Lack of dedicated circuits for large appliances
Wear and tear on electrical components over time
As electrical demands increase, these older systems can struggle to keep up, leading to noticeable performance issues like flickering lights and dimming.
When to Call an Electrician in Reno
If you are unsure whether your situation is normal or a sign of a problem, it is always best to have a professional take a look.
You should contact an electrician in Reno if:
Lights flicker consistently when appliances turn on
The issue affects multiple rooms
You notice signs of overloaded circuits
Your home has an older electrical panel
You are planning to add new appliances or an EV charger
A licensed electrician can evaluate your system, identify the cause of the issue, and recommend solutions such as circuit upgrades, panel replacements, or load balancing.
Trusted Electrical Services in Reno and Sparks
KD Electric provides professional electrical services in Reno, Sparks, and across Northern Nevada. Their team understands the unique challenges that Reno homeowners face, especially in older homes where electrical systems may be outdated.
Whether you are dealing with lights dim when appliances turn on, voltage drop in your house, or general electrical load issues, KD Electric can diagnose the problem and provide safe, reliable solutions.
Their licensed electricians focus on long-term performance, ensuring your electrical system can handle the demands of modern living.
Come See Us at KD Electric
If lights flicker when appliances turn on, it may be a normal response to increased electrical demand, or it could be a sign of a larger issue. Occasional dimming is common, but frequent or severe flickering should not be ignored.
Understanding the difference between normal behavior and warning signs can help protect your home, your electronics, and your safety. When in doubt, having a professional inspection is the safest and smartest choice.