What To Do When Your Furnace Blower Keeps Running But No Heat

image of a homeowner feeling chilly due to furnace blower keeps running but no heat

When a furnace blower keeps running but no heat, there is an issue with the system. This heating problem can be due to several reasons. Homeowners can resolve some issues effortlessly, while others demand expert attention and specific equipment. Always start by evaluating straightforward solutions before delving into intricate ones. Experiencing a continuously running furnace blower without any heat? Let’s guide you through preliminary troubleshooting steps before suggesting when it might be time to call in the professionals at Lawes Company.

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Troubleshooting Tips When Your Furnace Operates But Fails to Warm Your Space

Delve into these helpful insights to diagnose why your furnace might not emanate the desired warmth.

Inspect the Furnace Condensate Line

Modern high-efficiency furnaces are designed to produce water as a byproduct of their operation. This moisture is systematically expelled through a dedicated drain line. However, should there be an obstruction in your furnace’s drain line, the resultant water backup could trip your overflow kill switch, effectively shutting down your furnace. A noticeable puddle of water surrounding your furnace often serves as a telltale sign of a condensate line blockage. In such instances, it’s crucial to seek expert furnace maintenance from professionals, such as those at Lawes Company, to rectify the issue promptly.

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Activate the Heating System’s Reset Feature

image of a furnace reset button

Numerous furnaces have a dedicated reset feature, often recognized by its red button. To potentially restore your furnace’s operation, simply press this button. However, it’s worth noting that if you resort to the reset button frequently to maintain your furnace’s functionality, it’s a clear sign that there might be a deeper issue at play. In such cases, it’s imperative to have a certified HVAC expert, like the skilled technicians at Lawes Company, thoroughly evaluate and pinpoint the root cause of the recurring problem.

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Review Your Furnace Thermostat Settings

A typical scenario where the furnace blower is operational but fails to emit warmth could be attributed to incorrect thermostat configurations. It’s essential to ascertain that the thermostat hasn’t mistakenly been set to the “cool” mode instead of “heat.” While this may seem elementary, it’s an oversight that happens more often than one might think. The expected warmth will be absent with only the blower active and no heating cycle initiated. To address this, consider the following steps:

  1. Adjust the Fan Settings: Change the fan setting to “AUTO.” This adjustment ensures the blower motor becomes operational only during a heating cycle. If left on the “ON” setting, the fan might circulate cold air from the blower, increasing energy consumption.
  2. Elevate the Thermostat Setting: Should the furnace remain dormant and not produce heat, raise the thermostat a few degrees above the current room temperature. This action can prompt the furnace to initiate a heating cycle.
  3. Seek Expert Assistance: If, after implementing the above measures, the furnace continues to underperform, it’s time to consult with an expert. The skilled technicians at Lawes Company are always ready to assist with such challenges.

Addressing HVAC Airflow Concerns

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Compromised airflow in your furnace or ductwork can drastically reduce the warmth reaching your living spaces. This reduction often stems from dirty air filters, which hinder the smooth passage of warm air through vents. To effectively handle airflow challenges:

  • HVAC Air Filter Maintenance: Regularly inspect the air filter. If it’s saturated with pollutants, it’s time to change it. For optimal performance, checking monthly and replacing the filter as needed is advisable.
  • Check Vent Louvers: Confirm that all louvers are open by examining each vent. Should you find any louvers closed, remove the vent cover for cleaning. In instances where the louvers appear stuck, it might be best to engage a skilled HVAC technician, like those from Lawes Company, for a potential replacement.
  • Clear HVAC Vents and Registers: It’s crucial to ensure no vents or registers in your residence are obstructed. Common culprits include bulky furniture, carpets, and rugs. If a particular vent has diminished airflow, inspect it for any fallen objects causing blockages. These can be safely removed with a wire or by hand.
  • Inspect the Ductwork: Evaluate the state of your home’s air ducts. Leaky ducts can cause the loss of warm air, affecting the temperature output from your vents. This inefficiency forces your furnace to overexert, decreasing its longevity and energy efficiency. To maintain your heating system’s efficacy, it’s recommended to engage professionals to seal any existing leaks or gaps.
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Prioritize Routine Professional Furnace Check-ups

To sidestep challenges related to airflow, it’s imperative to earmark regular professional HVAC cleanings and maintenance sessions.

Addressing Fuel and Ignition Complications

When your furnace remains cold even after activation, it could signal troubles with the ignition system or fuel provisioning. Here’s a guide to inspecting potential fuel-related concerns:

  • Begin by examining the gas supply line, ensuring the gas valve remains open and operational.
  • For those relying on heating fuels like oil or liquid propane, always check that your storage tank retains an adequate supply. If levels appear low, it’s prudent to arrange a timely refill.
  • If natural gas powers your furnace, it’s wise to check in with your utility provider to ensure there haven’t been any unforeseen service disruptions.

Navigating Furnace Ignition Issues

The proper functioning of your furnace’s ignition system is vital for the combustion of gas to produce heat. If you encounter ignition setbacks, consider the following troubleshooting guidelines:

  • Inspect the Pilot Light: Furnaces, especially older models, employ a pilot light for ignition. Should you discover that this light is extinguished, it will necessitate relighting. For precise instructions on relighting, always refer to the owner’s manual, ensuring you adhere to the manufacturer’s guidelines.
  • Electronic Furnace Issues: Furnaces with electronic ignition systems might experience heating disruptions if the igniter switch’s metallic strip accumulates grime. Carefully inspect this strip; if dirt is evident, delicately clean it. Given the delicate nature of this component, it’s paramount to treat it with utmost caution. If unsure, it’s best to solicit the expertise of a professional like those at Lawes Company.
  • Safety First: Never resort to manually lighting your furnace, as this poses significant safety risks. Furthermore, if your furnace motor is operational but without heat emission, inspect the blower to ensure its belt remains intact and properly aligned.
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In Conclusion

A non-heating furnace can be symptomatic of diverse underlying issues, each necessitating a distinct remedy. Should you exhaust all these recommended troubleshooting measures and the issue lingers, engaging a proficient technician is paramount. Promptly addressing these challenges with experts like those at Lawes Company ensures timely solutions, preventing potential escalations.

Contact Lawes Company For Comprehensive HVAC Solutions

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Lawes Company delivers unparalleled heating and cooling solutions in the Jersey Shore region. We pride ourselves on employing top-tier certified technicians who are adept at providing stellar HVAC tune-ups, repairs, installations, and replacements. Each team member boasts extensive knowledge and hands-on experience, ensuring your HVAC system receives the best care.

At Lawes Company, we take pride in offering competitive rates for heating and cooling services. Leveraging our maintenance services elevates your comfort and amplifies energy efficiency, trimming down your household heating and cooling expenses. If you need HVAC repair or a complete system replacement, trust us to suggest the most suitable options tailored to your residence and budget. We stand firmly behind our work, offering a guarantee to underscore our commitment to your satisfaction. To arrange a service visit or for any HVAC queries, contact Lawes Company. We’re delighted to provide free in-home assessments.

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