If your heating elements are burned out, the system will blow cold air. If your furnace is blowing cold air, not blowing any air at all, or making odd noises, it’s important to schedule a repair as soon as possible. If you’ve run through the thermostat test described above, you’ll need to take the next step of bringing in a professional for repairs. If your fan only runs when your furnace is heating the air, then you’re much less likely to experience your furnace blowing cold air. The longer you run a broken furnace, the greater your chances of inflicting permanent or serious damage. It will also depend on how much insulation you have around your ducts and how old your furnace is. Why Does My Furnace Blow Cold Air? Before you call a pro, try these fixes: First, check your thermostat. So, if you have a tripped breaker, the furnace may stay on however, the air can’t warm up because the gas burner can’t ignite. If your furnace is blowing cold air, there are chances that someone has adjusted fan settings from ‘Auto’ to “On’. See furnace repair details. This post shows some basic troubleshooting ideas to get your furnace blowing hot again. In many cases, the solution is much simpler than you may realize. If you have a dirty filter, replacing the filter typically stops cold air from blowing. 707-464-9529. If you cannot find a pilot light, then an electric heating element is probably what ignites your furnace. You can go ahead and change the air filter yourself. If your furnace is blowing cold air, it … This can cause the air to feel only lukewarm. If you can’t figure out the issue, give us a call and we will inspect your furnace. I?ve had people say to me, ?My furnace blows cold air only! 6. #3 – The Furnace Has Overheated. It’s Just Been Switched On – Any furnace will blow cold air when it starts up, since it takes time for hot air to travel through the system and into your home. What shoul I do next or how do I identify the limit switch. The following are seven common problems that can cause your furnace to emit cold air. You’d want to take it to someone who’s certified to work on your make of car. There are a few things to check in your home in the case that your furnace is blowing cold air, such as your thermostat settings, air filter, and your home’s ductwork. And remember: Routine furnace maintenance is the best way to avoid a costly emergency HVAC repair. Make sure the thermostat’s screen is on and the buttons are responsive. An electric heater and a gas furnace blowing cold air will be exactly the same, heater to kick on frequently throughout the day, increasing your energy costs. If you can’t get your furnace to blow any air, hot or cold, it’s possible it has overheated. Is the Pilot Light lit? There are, incidentally, some common causes for why your furnace may be blowing cold air instead of warm, and what you can do to fix the problem. A home furnace, heat pump, or heater blowing cold air isn’t necessarily a reason to panic. The lukewarm air coming out of your furnace can also be the result of leaky air ducts. Or I Is my furnace not working?? If I shut if off for a few minutes and then try again, about half the time it will blow hot air. The blower begins blowing, but does not blow warm air, only cold- it doesn't heat up. Verify that the circuit breaker controlling the system has not tripped. The cold weather has rolled in and you’re looking to warm up the house, so you decided to turn your furnace on only to find that it’s blowing cold air. An electric heater and a gas furnace blowing cold air will be exactly the same, so give it a few minutes after you turn it on. The fuel system, the burners, the fan and the ductwork. However, the fan will keep running, cooling the furnace to protect it from potential damage. If your Oil Furnace is Still Blowing Cold Air, Check Your Flame Sensor. There are four main components of a furnace. If you’re noticing that your furnace starts blowing cold air here and there, not consistently, it may be because your thermostat is set to ON. Why let just anyone work on your unit? Troubleshooting a Furnace That's Blowing Cool Air. A dirty air filter blocks airflow over the furnace’s heat exchanger, causing it to overheat. The fix: Duct sealing. Getting home to a cold house and having a furnace that blows cold air is a headache. This air might not always be cold, and could be room temperature as well. This raises temperatures inside the furnace, and the limit switch shuts heating cycles down if the unit becomes too hot. Related: Heat Pump vs. Air Conditioner and Gas Furnace, Which is Better? If your ducts are leaking (and ENERGY STAR says that almost all homes leak about 30% of the air in their ducts), cold outside air is making its way into your ductwork. A breaker that continues to trip is an indication of a short circuit or other malfunction. Dust and debris in your indoor environment can usually accumulate around the filters. Furnaces can be dangerous if not serviced properly. Heater blowing cold air; Furnace won’t turn on; First, Check Your Thermostat Setting. If your furnace keeps blowing cold air, you may notice that your air filter is too dirty. Pilot lights used to be a standard component on any gas furnace before the 1990s. Usually, a filter needs to be replaced every two months, or your unit may have a different specification. You wouldn’t take your car to just any mechanic. If it has, reset the breaker. Furnace Still Blowing Cold Air? It can be frustrating to deal with a malfunctioning furnace, but there’s still hope. If your electric furnace is blowing cold air, it has power, but there may be something else that is preventing it from operating properly. I turn thermostat onto the "heat" position and set temperature at a higher temp than room temperature. blowing cold air furnace broken It was a dark and stormy night. Dirty Filter. The “on” setting means that the furnace fan will be running even when the furnace itself is off. The furnace blowing cold air, or there is no heat in the house. I replaced the thermostat and that did not fix it. Schedule furnace repair today . Details. In such cases, a safety control device known as the limit switch will shut off the burners. 900 Northcrest Dr. Crescent City, CA 95531 1. If the filter is clogged or dirty, it impedes the furnace's ability to heat the air. Dirty Filters. If your furnace overheats, it could end up blowing cold air. Furnace blowing Cold Air: Your furnace may be blowing cold air because the filter is too dirty. I can fix it by turning off the system and resetting the circuit breaker, but it gets pretty cold … I then switch thermostat back to "heat" and unit shuts off as if the set room temperature has been reached although it hasn't. We’ve tried to troubleshoot the issues your furnace might be having. If your furnace is blowing cold air, our team at ABC Plumbing, Sewer, Heating, Cooling and Electric can help. A/C & Refrigeration offers HVAC Repair to Phoenix Valley homes and businesses. Then when the thermostat is switched to "emer", heat blows. There is a reason for this – it works! If they’re not, try changing the batteries. Furnace in model # … 10 Common Reasons Why Your Furnace is Blowing Cold Air Furnaces / By Smile HVAC When the furnace is turned on after a certain period, whether it be days, weeks or months, turning on the system does not mean that warm air will automatically begin to pass through the vents. Here are 7 possible causes, and only some cost money to fix Ph: 425.402.4456 According to the chart on the panel this indicates a stuck limit switch. Additionally, here are a few troubleshooting tips for you to consider if your AC stops blowing cold air. If your furnace is blowing cold air, give us a call today! How to tell if there’s really a problem. If your heater starts by throwing warm air out of your registers, but you are soon left with a heater blowing cold air, then I would suspect that your flame sensor needs to be cleaned. All gas, oil, and electric furnaces are sensitive and calibrated pieces of equipment. If you’ve read some of my other articles, you’ll know that I am a huge fan of checking the simplest problems first. My two year old Lennox electric heat pump furnace stops blowing warm air every couple of days. A dirty air filter hinder air movement through the furnace. In this article we try to help you with the issues caused by cold air blowing from an electric furnace, do you need heating repair? Cold air trapped inside will need to be expelled before the hot air can take its place! It has a clean air filter in it also. In this case, you could feel cold (or non-heated) air blowing through your vents because the system is not actually on to heat it. Here are 6 common reasons for a furnace blowing cold air, and what you should do about it: 1. The fan blows fine. Call 888-868-6667 today or contact us online to schedule furnace repairs in Chicago! Electric Furnace. Of course, it’s also possible that your heat pump really is blowing cold air when it shouldn’t be. It has an led indicator on the control panel that is blinking 4 times. If this doesn’t fix your problem, and your furnace is still not blowing hot air, you can move on to some of the other potential culprits. Wrong thermostat setting. When an element malfunctions, you will need to call an HVAC professional. Here are some of the reasons your furnace might be blowing cold air: #1. Replace or clean dirty or clogged filters. Electric heaters require power. Is your furnace blowing cold air? It only takes one or more components to be out-of-whack, or not tended to that creates problems. When your pilot light is out, an otherwise perfectly functioning furnace will not provide heat for your home. I have an electric furnace that blow cold air sometimes. Is The Thermostat Set To Auto or On? AC works properly with a clean filter. We offer furnace repair and maintenance throughout the Chicago area, and our talented technicians can handle any furnace problem you may encounter. Even if you have a gas furnace, they typically have an electric starter that ignites the gas burner. Replace the old air filter. I have an American Standard furnace that is just blowing cold air but no heat. 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