When the weather gets hot in Southern Illinois and Western Kentucky, your electrical system has to work harder. Air conditioners run more often, appliances pull more power, and older panels may struggle to keep up with the added demand.
If your lights flicker when the air conditioning kicks on, or if they dim during certain times of day, it may be a simple issue. It may also be a sign that your electrical system needs attention from a licensed electrician.
Here are a few common reasons your lights may flicker during hot weather.
1. Your air conditioner is drawing a lot of power
One of the most common causes of flickering lights in the summer is the air conditioner starting up. When an A/C unit turns on, it needs a brief surge of electricity to get running. This is called a startup load.
A quick flicker when the unit starts may not always be a major concern. However, if the lights dim heavily, flicker repeatedly, or stay dim while the system is running, there may be an issue with the circuit, wiring, or electrical panel.
You may need an electrician to check:
- The circuit feeding the A/C unit.
- The condition of the breaker.
- Loose or overheated connections.
- Whether your electrical service can handle the demand.
2. Your circuits may be overloaded
Hot weather often means more electrical use throughout the home. In addition to air conditioning, you may be running fans, dehumidifiers, refrigerators, freezers, pool equipment, or garage appliances.
When too many devices pull power from the same circuit, your lights may flicker or your breaker may trip.
Common signs of an overloaded circuit include:
- Flickering or dimming lights.
- Breakers that trip often.
- Warm outlets or switches.
- Power strips being used in multiple rooms.
- Appliances that slow down or struggle when another device turns on.
If this happens often, Reed Electric can inspect the system and determine whether you need repairs, a dedicated circuit, or a service upgrade.
3. There may be loose wiring or a bad connection
Flickering lights are sometimes caused by loose wiring. This is more serious than a simple power draw issue. Loose electrical connections can create heat, damage equipment, and increase fire risk.
Call an electrician if you notice:
- Lights flickering in multiple rooms.
- A buzzing sound from outlets, switches, or the panel.
- A burning smell.
- Discolored outlets or switch plates.
- Lights that flicker when you touch a switch or plug.
These symptoms should not be ignored. Reed Electric can troubleshoot the problem, inspect the connections, and make safe repairs.
4. Remodels and Rewires
Spring renovations often involve kitchens, bathrooms, and home additions. These projects require safe, code-compliant electrical work to support modern living.
Reed Electric can assist with:
- Wiring for remodels and expansions
- Additional outlets and switches
- Upgraded lighting and circuit installations
- Rewiring older homes for safety and performance
A professional electrician ensures your project meets current standards and operates reliably.
4. Your electrical panel may be outdated
Older homes were not always built for today’s electrical needs. Modern households often rely on central air, extra refrigerators, home offices, large televisions, smart devices, and more.
If your panel is outdated or undersized, hot weather can make the problem more noticeable.
A panel or service upgrade may be worth considering if:
- Your breakers trip frequently.
- Your panel is full or has no room for new circuits.
- Your lights dim when major appliances start.
- You are planning a remodel or addition.
- You are adding outdoor lighting, backup power, or new equipment.
Reed Electric provides service upgrades and repairs for homes and businesses throughout Paducah, Metropolis, Southern Illinois, and Western Kentucky.
5. The problem may be outside your home
Sometimes flickering lights are caused by utility issues, especially during periods of extreme heat when demand is high across the grid. If several homes on your street are experiencing flickering or dimming lights, the issue may be related to the utility service.
However, if the problem is limited to your home, or if it keeps happening after the weather calms down, it is worth having your electrical system inspected.
When should you call an electrician for flickering lights?
A small, brief flicker when a large appliance starts is not always an emergency. Still, flickering lights should be taken seriously when they happen often or come with other warning signs.
Call Reed Electric if:
- The flickering happens regularly.
- Lights dim for more than a moment.
- Breakers trip when the lights flicker.
- Outlets, switches, or the panel feel warm.
- You hear buzzing or smell burning.
- Flickering happens across multiple rooms.
- You recently added new appliances or equipment.
How Reed Electric can help
Reed Electric provides electrical troubleshooting, inspections, maintenance, service upgrades, repairs, and code updates for homes and businesses across Southern Illinois and Western Kentucky.
If your lights are flickering during hot weather, our team can find the cause and recommend the right fix. The solution may be as simple as repairing a loose connection, or it may involve adding a dedicated circuit or upgrading your service to handle modern electrical demand.
Have questions?
Call 618-524-7545 in Illinois or 270-441-2094 in Kentucky.