Why is My Heater Blowing Cold Air? Superior Mechanical Services, Inc.

7 Reasons Your Home Heater Is Blowing Cold Air & What To Do » B&C Comfort Fireplace & HVAC

An electric heater that blows cold air could be caused by one or more of the following reasons: The manual reset has tripped. The fan switch is "on" and the thermostat setting is below the actual temperature. The fan is dispersing this air after shutdown. There may be a loose wire coming from the elements. The heater element may be defective.

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Take a look at the temperature setting on the thermostat and the temperature inside the house. Digital thermostats should display both values. When the thermostat's setpoint is 74f degrees and the thermostat reads 74f or above, and the blower is still operating, the faulty sensor could be the cause.

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Open your cabinet and look for the coil. Mark the place with a white paint or primer once you've located it. Because you'll need to unbolt them and slide them out. Once you've done that, vacuum the coils and cabinet to remove debris using a vacuum hose. Caution: While you clean, make sure your heater is turned off .

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A clogged air filter restricts airflow, significantly reducing the efficiency of your furnace and possibly leading to it blowing cold air. Locate the filter, which is typically found in the return air duct or blower compartment. Turn off the furnace before removing the filter to examine it.

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It might not be that your furnace blows cold air, but instead that the lack of heat leads to cold air circulating throughout your home. You've Got a Leak. Most homes do, actually! Studies have shown that between 20 to 40 percent of heat is lost in the air duct system. This occurs when the ducts have small openings that allow air to leak out.

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Your heater or furnace is blowing cold air. Step 1. Check your thermostat's fan settings. If your heater blows cold air sometimes and warm air other times, your thermostat's fan setting may be set to "On" rather than "Auto". Quickly confirm that's not the case. If it is, your cold air issues should go away after switching it.

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Reasons for an Electric Furnace Blowing Cold Air. The Thermostat is Set to Fan or AC. The Thermostat is Bad. The Contactor is Bad - Coils Not Being Energized. One or More Coils are Burned Out. The Filter or Coils are Very Dirty. Circuit Controlling the Heating Coils is Tripped or Off.

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Thermostat Fan Setting On "On": Constant Cold Air. One possible reason why your electric furnace is blowing cold air is that the thermostat's fan setting is set to "On" instead of "Auto".When the fan setting is on "On", the blower runs constantly, regardless of whether the furnace is producing heat or not.This continuous circulation of air can result in cold air being blown.

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Dust and Debris Accumulation. Excessive dust and debris within the heater can interfere with its performance, causing it to blow cold air. Regularly clean your heater by removing the dust and debris build-up to ensure optimal performance. Why This Happens: Dust can act as an insulator and obstruct airflow.

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If the breaker for the heating elements is tripped, only the blower will work, blowing cold air. Resetting the circuit breaker should fix this issue. 4. Broken Heating Elements. The heating elements in your electric furnace may be broken or burnt out. If this is the case, the blower will blow air over the non-functioning elements, resulting in.

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1. Check Thermostat Settings. Ensure that the thermostat is set to the desired temperature and the heating mode is activated. Sometimes, incorrect settings can lead to the system blowing cold air. 2. Verify Power Supply. Confirm that the heating system has power.

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Clogged Vents. Dirty filters and dirt buildup in your vents may block warm air from passing through quickly, leading to cold air infusing into your warm air. As a result, you end up with cold air venting out. These are the most common culprits when it comes to electric heater troubleshooting if your heater is blowing cold air.

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Q2. Is it safe to use an electric fan heater that is blowing cold air? A2. Using an electric fan heater that is blowing cold air is generally not considered safe. A faulty electric fan heater can pose a fire hazard or cause electrical shocks. It's best to troubleshoot the issue or seek professional help before continuing to use the heater.

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Clogged Air Filters. Another possible cause of your electric heater blowing cold air is clogged air filters. Air filters are designed to trap dust, debris, and other particles to prevent them from entering the heating system. Over time, these filters can become dirty and clogged, restricting airflow and reducing the efficiency of the heater.

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Check the fan settings on the thermostat. If the setting is "always-on", then the fan will automatically blow cold air into your home when the furnace cuts off. Ideally, you ought to set it on "auto.". The temperature setting may also go awry if you need to change the thermostat batteries but haven't yet. Sometimes, the thermostat may.

Why Is My Heater Blowing Cold Air? Furnace Troubleshooting

If you're short on time, here's a quick answer to your question: The most common reasons an electric heater blows cold air are a tripped breaker, dirty filters, blower fan failure, faulty thermostat, or insufficient power supply. Checking the wall thermostat, inspecting filters, and resetting the breaker can often resolve the issue.