Contractors: Lights Dim When AC Comes On

Oct 31, 2023


Welcome to, your go-to source for all things HVAC contractors. In this comprehensive guide, we will dive into the common issue of why lights dim when the AC comes on. Whether you are a homeowner or a business owner, we have got you covered with the best solutions and tips. Let's explore how our expert contractors can help you resolve this issue effectively!

Understanding the Problem

Have you ever noticed your lights flickering or dimming when you turn on your air conditioning? This phenomenon can occur due to various reasons, and it's important to understand the underlying causes to find the appropriate solutions.

Common Causes of Lights Dimming

1. Insufficient Electrical Capacity: Your electrical system might not have enough capacity to handle the sudden surge of power required by the AC unit when it starts. This can result in voltage drops that cause lights to dim momentarily.

2. Shared Circuits: In some cases, lights and AC units may share the same electrical circuit. If the load on the circuit exceeds its capacity, lights can dim as the AC draws power.

3. Faulty Wiring: Poor or outdated wiring in your property can also cause lights to dim. It's crucial to ensure your electrical system is properly installed and up to code to prevent such issues.

4. Nearby Appliances: The simultaneous operation of heavy electrical appliances near the AC unit, such as refrigerators or washing machines, can lead to voltage fluctuations and subsequent light dimming.

Recommended Solutions

When faced with lights dimming when the AC comes on, it's important to take immediate action to prevent further damage to your electrical system. Here are some solutions that our expert contractors can provide:

1. Electrical System Upgrade

If your electrical capacity is insufficient, our contractors can assess your system's load and recommend an upgrade to meet the demands of your AC unit. This may involve installing a new panel or adding dedicated circuits.

2. Circuit Separation

In cases where lights and AC units share circuits, our contractors can rewire your electrical system to separate them. This ensures the AC unit's heavy load doesn't affect other appliances or lighting fixtures.

3. Wiring Inspection and Repair

Our team of experts can conduct a thorough inspection of your property's wiring to identify any faults or outdated components. Prompt repairs or replacements can eliminate the dimming issue and improve overall electrical safety.

4. Load Management

If the simultaneous operation of multiple high-powered appliances causes the voltage fluctuations, our contractors can provide load management solutions to distribute the power usage more evenly, minimizing the impact on lights.

Preventive Measures

While our expert contractors can effectively resolve your lights dimming issue, it's crucial to implement some preventative measures to maintain stable electrical performance:

  • Regular maintenance of your HVAC system to ensure it operates efficiently without exerting excessive strain.
  • Avoid running high-power appliances simultaneously when the AC is running.
  • Upgrade your electrical system proactively to meet the increasing demands of modern appliances.
  • Consult our contractors for routine inspections to identify and address any potential issues proactively.

Contact Today!

Don't let lights dimming ruin your comfort or compromise your electrical system's safety. Contact's experienced contractors today for expert solutions and take control of your AC-related issues. With our dedication to professionalism and customer satisfaction, we are confident in providing you with outstanding service.

lights dim when ac comes on
Steven Bashford
Thank you for providing such helpful insights! This article definitely solved a problem I've been experiencing.
Nov 9, 2023
Joe Leon
Great insights! Finally found the answers I needed 💡❄️
Nov 8, 2023