5 Reasons Your Furnace Is Blowing Cool Air in Jackson, GA

If your furnace is blowing cool air, that means you may have an issue with a piece of the HVAC equipment. Some issues you can fix yourself, while others require professional help. However, either way, most problems are fixable and you’ll be back to enjoying warmer indoor air in your Jackson, GA, home in no time. Here are some of the most common reasons your furnace would blow cool air.

1. You Have a Thermostat Issue

If you constantly change your thermostat’s settings, you can cause stress on your furnace which can lead to problems. A thermostat regulates your home’s temperature efficiently, but changing the settings daily will lower that efficiency and cause cold air to blow more frequently instead of warm air.

Alternatively, it’s possible that your thermostat may need new batteries. Some use batteries solely for backup power, but others require them to work. When a thermostat like that runs on low batteries, it cannot communicate with the furnace, which makes the system run less effectively.

2. You Have a Dirty Air Filter

You should be changing your air filters regularly or they can become clogged and will not allow air to flow freely through your systems. Ensure that you don’t have a clogged filter by changing it at least once every three months, and more often if you have pets.

3. You Have a Pilot Light Issue

If your home has an older furnace, it’s likely your pilot light is not on if the furnace is not running correctly. To fix this problem, it’s best to contact a professional to address the pilot light itself. You can also benefit from looking at installing a new furnace with an electric pilot light that won’t go out.

4. You Have Leaky Air Ducts

Air ducts with damage will allow heat to escape before reaching your home’s vents. Depending on the extent of damage, simple sealing or new duct replacements will fix this problem.

5. You Have Low Gas Supply

Most furnaces shut off when a limited supply of gas is available. This causes cold air to blow instead of hot, which is an issue that requires professional repair. The root cause of a low gas supply is often from gas line leaks, which is dangerous for your home’s safety.

If your furnace is blowing cool air, you should first check your thermostat to see if that is the root of the problem. If the thermostat isn’t the cause, then you need furnace repairs to get your home warm again. Contact Zack Hammonds A/C Heating & Refrigeration Inc. today to schedule furnace maintenance and repairs.

Image provided by iStock

You May Also Like

Furnace Draft Inducer in Bishop, GA
January 30, 2026

Signs of a Problematic Furnace Draft Inducer in Bishop, GA

When the chill of winter settles in over Bishop, GA, your furnace takes on the heavy lifting of keeping your home warm… Continue Reading Signs of a Problematic Furnace Draft Inducer in Bishop, GA

Read More…

indoor
December 22, 2025

How Poor Indoor Air Quality Affects Your HVAC System

Indoor air quality affects more than just your health, it also has a major impact on your HVAC system. When air is… Continue Reading How Poor Indoor Air Quality Affects Your HVAC System

Read More…

refrigeration
November 30, 2025

Why Preventive Maintenance Is Essential for Commercial Refrigeration

For businesses that depends on reliable temperature control like restaurants, florists and grocery stores, commercial refrigeration is critical. A breakdown can quickly… Continue Reading Why Preventive Maintenance Is Essential for Commercial Refrigeration

Read More…

Compliance Settings
Increase Font Size
Grayscale
Simplified Font
Underline Links
Highlight Links
Reset
Close