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Furnace Keeps Clicking But Won’t Start? Here’s What’s Really Going On

Picture a cold evening in Akron, maybe near Highland Square or after a drive past Firestone Park, when you adjust your thermostat expecting warm air to roll through your home. Instead, your furnace keeps clicking but won’t start. That steady clicking can feel confusing, especially when you’re counting on reliable heating. In many cases, the sound means your system is trying to ignite or protect itself but can’t complete the startup safely. Lakes Heating & Air Conditioning is here to help you understand why this happens and what you can do next so you stay comfortable all winter.

Gas furnace repair

What the Clicking Sound Usually Means

A furnace clicking but not turning on typically points to ignition attempts, relay activity, or control board signals. These parts work together to start the heating cycle, and clicking often means one of them is struggling. It can also indicate a furnace safety lockout, which happens when the unit detects a condition that prevents safe operation.

Ignition System Problems

If your furnace won’t ignite, the clicking you hear may be the igniter trying repeatedly to start the flame. A worn igniter, a pilot that won’t light, or an ignition sequence that can’t complete will all cause the system to try again and again without success.

Dirty or Failing Flame Sensor

Sometimes the burners light briefly but shut down right away. When the flame sensor is dirty or failing, it can’t confirm that a stable flame is present. The furnace responds by shutting off fuel and attempting to restart, which creates repeated clicking.

Gas Supply Problems

If your furnace won’t start with a clicking sound, the issue may be related to gas flow. Closed valves, low pressure, or supply interruptions can prevent ignition even when the system is trying to operate normally.

Electrical Issues and Power Interruptions

Loose wiring, a weak capacitor, blown fuses, or tripped breakers can all cause no heat and furnace clicking. These electrical issues interrupt the startup sequence, leaving the unit stuck in a loop of attempts without producing warm air.

Control Board or Relay Failure

A malfunctioning control board or a stuck relay can cause the furnace to repeatedly attempt startup. When these components fail, the unit may click without ever completing a heating cycle.

Safety Switches and Limit Switch Lockouts

Overheating, blocked vents, or restricted airflow can trigger safety switches. When this happens, the furnace shuts down to protect itself and may click as it tries to restart. These issues can also lead to furnace ignition problems that require professional attention.

Why Clicking Should Not Be Ignored

Repeated clicking may seem minor, but it can strain components and eventually cause the unit to stop working entirely, forcing a furnace replacement. If fuel is present but ignition is unstable, the situation can become unsafe. Addressing the problem early helps prevent breakdowns and protects your home. Routine care also helps, which is why furnace maintenance is so valuable.

Schedule Furnace Repair With Lakes Heating and Air Conditioning

When your furnace begins acting up, especially during a frigid winter, professional help is essential. Lakes Heating & Air Conditioning provides Akron furnace repair backed by a licensed and insured team that services all brands and offers free estimates on replacement quotes and service calls. As a family-owned and -operated company, we focus on upfront pricing and send background-checked technicians who respect your home. Financing options are available, and military, veteran, and senior discounts help keep service affordable. We’re ACCA-accredited, active in the Green Chamber of Commerce and Green Schools Foundation, and proudly support local sports teams while sponsoring a Trade Scholarship at Green High School for students entering skilled trades. If you’re facing a heating crisis, emergency heating services are available to restore comfort quickly.

Call today for fast, reliable service and get your furnace working again safely.  

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Why Choose Lakes Heating & Air Conditioning?

Trusted & Respected in Your Home & Business Since 1974
  • Licensed & insured
  • Free estimates & upfront pricing
  • Family-owned & -operated
  • Background-checked technicians
  • Financing options available
  • Veteran discounts
  • ACCA-accredited
  • Members of the Green Chamber of Commerce & Green Schools Foundation
  • Sponsor various sports teams in the community