Troubleshooting Furnace Problems in Marietta, GA: A Local Homeowner’s Guide

Winters in Marietta, GA, may be short, but chilly nights and damp mornings make reliable heating a must. If your furnace isn’t working or is struggling to keep up, don’t panic—many common heating issues can be fixed quickly without calling in the pros. In this local guide, A-Team Home Services walks you through simple DIY furnace fixes and explains when it’s time to call an expert in furnace repair in Marietta.

No Heat or Cold Air from Vents

What’s Going Wrong: Your furnace is blowing cold air or not producing enough heat.

DIY Fixes:

  • Check the thermostat: Is it set to “heat”? Is the temperature higher than the room’s?
  • Replace your air filter: A clogged filter restricts airflow and causes weak heating.
  • Open all vents and make sure none are blocked by furniture or rugs.

Call a Pro If: The unit stays unresponsive, blows only cold air, or cycles without warming your home. It could be a blower motor, thermocouple, or gas valve issue.

Furnace Making Loud or Strange Noises

What’s Going Wrong: You hear banging, clicking, buzzing, or rattling from your furnace.

DIY Fixes:

  • Turn off the furnace and inspect for loose screws or panels.
  • Replace the filter if it’s dirty, especially if there’s a hissing noise.

Call a Pro If: You hear screeching or scraping. This could mean a damaged blower wheel or ignition issue—definitely a job for an HVAC technician in Cobb County.

Furnace Turns On and Off Constantly (Short Cycling)

What’s Going Wrong: The furnace runs for a short time, then shuts off repeatedly.

DIY Fixes:

  • Replace the air filter—this is one of the top causes of short cycling.
  • Check thermostat batteries and ensure it’s installed in a consistent temperature zone.

Call a Pro If: The issue continues—it may be due to an oversized furnace that doesn’t match your home’s heating needs. A professional can determine the correct system size.

Pilot Light Keeps Going Out

What’s Going Wrong: The pilot light on your furnace won’t stay lit or won’t ignite at all.

DIY Fixes:

  • Confirm the gas valve is in the “ON” position.
  • Follow manufacturer instructions to safely relight the pilot light.
  • Replace the filter and reset the breaker if needed.

Call a Pro If: The issue persists. It could be a faulty thermocouple, dirty pilot assembly, or bad gas regulator—all of which require professional handling.

High Heating Bills

What’s Going Wrong: Energy bills are rising, but indoor comfort hasn’t improved.

DIY Fixes:

  • Seal drafts around windows and doors.
  • Replace filters regularly and schedule seasonal maintenance.

Call a Pro If: Your furnace is outdated or inefficient. New energy-efficient furnace installations in Marietta can reduce your heating costs while improving comfort.

Uneven Room Temperatures

What’s Going Wrong: Some rooms feel warm, while others remain chilly.

DIY Fixes:

  • Make sure all vents are open and unobstructed.
  • Adjust duct dampers if available.
  • Replace filters to improve airflow throughout the system.

Call a Pro If: The problem remains—it may be due to leaky ductwork or furnace airflow issues. Our heating repair team in Marietta, GA, can help restore consistent heating across your home.

When to Call a Professional HVAC Company in Marietta

At A-Team Home Services, we encourage safe DIY troubleshooting, but there are times when it’s best to rely on trained professionals. If you notice strange odors, repeated issues, or mechanical failures, our licensed HVAC team is ready to help.

Call us if:

  • You smell gas—turn off your system, ventilate, and call immediately.
  • DIY fixes haven’t resolved the issue.
  • You want to upgrade to a high-efficiency heating system.
  • It’s time for annual furnace maintenance.

Stay Warm with Expert Heating Services in Marietta, GA

Don’t let furnace issues leave your home cold this winter. Whether you need a quick repair, seasonal maintenance, or a complete furnace replacement, A-Team Home Services delivers dependable furnace repair and installation throughout Marietta and Cobb County.

Call 770-516-5165 or contact us online to schedule your heating service today. Your comfort is our top priority.

A Commitment to Quality