If you constantly hear the sound of a blowing fan yet do not feel the level of warmth that you would expect from a furnace, you literally do have a case of cold air. Lorton, This can make the air coming out of the vents seem lukewarm. A furnace consists of a motor fan that blows air across heating coils, thus warming the air. So it relies on an auxiliary (AUX) heat coil (like the ones you see in a toaster) or a furnace to heat your home. Arrived on schedule.”, Tags: Troubleshooting Electric furnaces pull air through a filter before it heats it. We hope that you stay safe and healthy during this time. Furnace shuts down â Because your furnace has to run longer to heat your home, the heat exchanger overheats, causing the furnace to automatically shut down. Set the thermostat to "heat" and set the fan to "auto." AUTO ensures that the blower will run only when the furnace heats the air. Simply put, if the settings on your furnace system are not properly coordinated with the fan, the latter will blow irrespective of whether you need or want actual heat. If you turn your furnace off or the room becomes sufficiently heated to the point where there furnace halts automatically, the limit control switch shuts the blower off to save energy. In a sense, it is like the lint trap in a laundry dryer, which needs to be cleared between each usage cycle. If the furnace overheats, the control switch will shut off the system as a safety precaution. How to Tell if an Ignitor on a Gas Furnace Is Working, The Fan Won't Start on My Outside AC Unit, HVAC for Beginners: Furnace Troubleshooting, How to Troubleshoot HVAC Problems and Malfunctions, How to Troubleshoot Home Furnace Blower Problems. Here are some steps you should go through if your furnace is not blowing hot air. If youâre low on fuel â or if fuel is unable to effectively power your ⦠If it seems that your furnace is only blowing air in certain rooms despite a well-dispersed heating system, chances are the furnace has not been activating with the same consistency as before. I would recommend that you purchase a Volt Ohm meter tester for some of the troubleshooting procedures listed in this section. Or perhaps the time/day settings are being misread by your furnace system. If tripped, circuit breakers should not be tested more than once. For example, if you have your furnace set to 70 degrees Fahrenheit, the furnace will shut off the heating coils once the ducts sense an ambient room temperature of 70 degrees Fahrenheit, but the fan will continue to blow cold air if it is set to “on” instead of “auto.”. electric furnace not heating. So, in an effort to save you the time and expense of a [â¦] You can test the blower fan by turning off the heat â or, depending on your system, setting the thermostat to “fan only” mode â and switching the fan from “auto” to “on.” Wait for a few minutes to see whether any fan breeze comes forth. If not, follow the manufacturer's instructions for resetting the pilot light. 4) Auxiliary heat is malfunctioning Below 40 degrees, your heat pump struggles to heat your home. If the issue is minor, it can sometimes be fixed singlehandedly. An electric furnace works by turning on a series of electric heating elements that generate heat through coils, much like the heating elements in a toaster or electric oven. This impacts the ability of the furnace to deliver heat on a consistent basis. We can have a certified service technician at your home as quickly as possible to fix any issues behind your furnace not heating properly. Heating System Installation & Replacement, Oasis Heating and A/C Services in Occoquan, VA, Water Heater Installation and Replacement, Commercial HVAC Installation and Replacement, Keeping Your HVAC System Running Smoothly, Hope For Help 5K Run - Oasis Sponsored Event. If the furnace is still blowing cold air, check the thermostat batteries. The settings can easily be adjusted if you need to test the performance of the furnace but an issue with the heating coils will necessitate a call to your nearby HVAC service specialist. Prior to accessing the air filter, shut off the furnace and thermostat. If your furnace does not seem to be working, the limit control switch could be responsible in one of two ways. I have a double wide mobile home and the furnace is blowing air strongly through the vents in the back of the house but not as strong in the front half. The fix: Set your thermostat to âautoâ and ⦠Don't try to light a furnace manually, as this is not safe. Consequently, the thermostat thinks that you are at work instead of home reading a book. If your thermostatâs fan setting is set to ON, then your furnace blower will constantly be operating ever when it is not putting warm air into your home. 2. Why Is My Electric Furnace Not Heating Enough? An issue of repeat tripping should be reported to an HVAC service person immediately. Your furnace clicks on and the blower motor is running, but the air coming from the vents is cold or cool instead of hot. 1. While weâre always happy to help these homeowners, the problem is often something that they can easily fix themselves. For example, one person’s “warm” could be another person’s “chilly.” Disagreements like these often go un-discussed, even between married couples. Given the possibility that someone else in your household might have changed the thermostat setting, check to make sure that the thermostat is set to “heat” instead of “cool.”. Reset the furnace. Also, if the fan limit switch override (a small knob on the switch) somehow got set to MANUAL instead of AUTO, the blower will run constantlyâwhether or not your furnace is going through a heating cycle. For example, it might be 8 p.m. Sunday in your area, but your thermostat believes that the time is actually 1 p.m. Tuesday. Also, check the cold-air return to ensure the filter is clean. The temperature is blowing between 75 and 85 degrees at different areas of the house but the temperature of the house went down from 70.8 to 69.8 in one hour. The air filter is one of the more obvious parts to check since it is easy to see how a clogged filter would impede the flow of air from a furnace. If the furnace blowers are generating heat in insufficient quantities, the issue is likely due to either a dirty motor or a loose blower belt. Knowledgable and neat techs. The furnace runs until the preset maximum temperature â usually at an owner-programmed level, such as 70 degrees Fahrenheit â has permeated the household interior, at which point the furnace shuts off to save energy. Warm air is sent through your ducts when the thermostat says itâs needed. In any event, check the following: Before you declare any serious problem with your furnace, check the settings on the thermostat to see whether everything is set to the desired modes and levels. After all, you wouldn’t likely need the house warm during the afternoon of a typical workday. With so many complex mechanisms involved in a heating system, any given number of issues could cause the furnace to malfunction. Sunday, November 12th, 2017 at 3:12 pm | Categories: Heating © Copyright 2020 Hearst Communications, Inc. There are a few steps that homeowners can perform to determine the source of a furnace problem. At Oasis Heating, A/C & Refrigeration, we have been servicing furnaces in northern Virginia households since 1998. Note: If you or a tech has recently tampered with your furnace, itâs possible that the fan limit switch was set incorrectly by accident. Alternately, it is possible that the thermostat you chose is simply not compatible with your pre-existing heating system. |, 7220 Telegraph Square Dr Suite V, You can avoid expensive repairs by troubleshooting furnace problems before calling a professional. What Are the Causes of a Gas Furnace Blower Motor Not Shutting Off? First and most important, Please make sure your electrical power is turned off before trying to repair or inspect any type of electrical appliance. Letâs look at some of the solutions to this common furnace problem. Lack of fuel â Whether you have a gas, electric, or oil furnace, your system needs fuel to properly run. If the batteries are old, replace them â remember, if the time or date settings are off, the battery is likely dead. During the wintertime, our service technicians often get calls from frustrated homeowners who have recently discovered that their furnace blower is not working. Most furnaces also have a reset button that clears any issues that might cause the furnace to produce no heat. Your furnace may be blowing cold air because the filter is too dirty. 24 Hour Emergency Service Available. In some cases, the buildup of dust and debris can thicken to the point where the passage of warm air is blocked by the filter. Start with the simple causes before moving to the more complex ones. If your furnace is not blowing heat or even seeming to activate, you have a more serious problem at hand. Moreover, check the temperature settings of your thermostat to make sure that the numbers are what you intended, especially if you feel colder than expected and you suspect that the settings might have been altered without your knowledge. WARM/HOT â This means your reversing valve may not be configured or wired properly. Homeowners with programmable thermostats often go about not knowing that the hour and day settings are way off. If this does not cause the heat to come on, the heating element might need replacement, which requires the services of a professional. A furnace blowing cold air is indicative of a problem. Likewise, a furnace that is not blowing air in one room is a confusing issue that could stem from various factors, all of which require immediate attention. “Great timely service. Getting home to a cold house and having a furnace that blows cold air is a headache. Therefore, while it might seem as though the furnace is not blowing air, the only real problem is that the furnace needs a new filter. She has written for newspapers, magazines, online publications and sites. Most parts can be ordered directly from the manufacturer and installed quickly and easily. If your furnace is on but no heat is coming forth, the problem could stem from issues with your thermostat. If after doing all these things the furnace does not produce heat, it might require a new igniter in pilot-less furnaces. Customer Question. Watch for the following tell-tale signs of furnace trouble: As outside temperatures drop, the confusion that the furnace-or-fan issue can cause is liable to be quite frustrating. Check the thermostat and ensure it is set properly. If you live in a household of two or more people, call everyone together for a discussion about mutually agreeable indoor temperatures throughout each period of a typical day. Brenner graduated from San Diego's Coleman College. But the heating elements cannot all turn on at once, since this will overload the circuit. Likewise, if the circuit breaker to the blower fan is off, warmth will not be spread from the heating coils. Also, clear away dust from under the thermostat panel. This warm air is dispersed through the ducts of a household heating system to bring occupied living areas to the desired temperature. The purpose of a household heating furnace is to warm your living quarters on an as-needed basis. Furnaces are simple in concept. The blower motor itself does not create the heat; rather it blows the heated air created by the furnace through the system's ductwork. If you have a gas furnace, check the gas supply to see whether the fuel supply is sufficient. Check the furnaceâs air filter. What temperature do you feel blowing from the vent? 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