If you can’t get your furnace to blow any air, hot or cold, it’s possible it has overheated. 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. A breaker that continues to trip is an indication of a short circuit or other malfunction. A/C & Refrigeration offers HVAC Repair to Phoenix Valley homes and businesses. A dirty air filter hinder air movement through the furnace. 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. Why Does My Furnace Blow Cold Air? Electric furnaces pull air through a filter before it heats it. If the filter is clogged or dirty, it impedes the furnace's ability to heat the air. Is your furnace blowing cold air? I then switch thermostat back to "heat" and unit shuts off as if the set room temperature has been reached although it hasn't. Electric heaters require power. If you have a dirty filter, replacing the filter typically stops cold air from blowing. This air might not always be cold, and could be room temperature as well. If you cannot find a pilot light, then an electric heating element is probably what ignites your furnace. The fan blows fine. Usually, a filter needs to be replaced every two months, or your unit may have a different specification. There is a reason for this – it works! Getting home to a cold house and having a furnace that blows cold air is a headache. I?ve had people say to me, ?My furnace blows cold air only! Is The Thermostat Set To Auto or On? I turn thermostat onto the "heat" position and set temperature at a higher temp than room temperature. The “on” setting means that the furnace fan will be running even when the furnace itself is off. 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. 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 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. 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. If your furnace is blowing cold air, give us a call today! Replace the old air filter. 6. If they’re not, try changing the batteries. Pilot Light. Before you call a pro, try these fixes: First, check your thermostat. The lukewarm air coming out of your furnace can also be the result of leaky air ducts. Schedule furnace repair today . Related: Heat Pump vs. Air Conditioner and Gas Furnace, Which is Better? 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. How to tell if there’s really a problem. According to the chart on the panel this indicates a stuck limit switch. Dust and debris in your indoor environment can usually accumulate around the filters. Cold air trapped inside will need to be expelled before the hot air can take its place! This can cause the air to feel only lukewarm. 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. You can go ahead and change the air filter yourself. 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? Or I Sometimes, it’s best to call in the professionals when you’re stumped. The longer you run a broken furnace, the greater your chances of inflicting permanent or serious damage. 2. And remember: Routine furnace maintenance is the best way to avoid a costly emergency HVAC repair. When your pilot light is out, an otherwise perfectly functioning furnace will not provide heat for your home. Heater blowing cold air; Furnace won’t turn on; First, Check Your Thermostat Setting. If you can’t figure out the issue, give us a call and we will inspect your furnace. However, the fan will keep running, cooling the furnace to protect it from potential damage. I have an American Standard furnace that is just blowing cold air but no heat. The furnace blowing cold air, or there is no heat in the house. A dirty air filter blocks airflow over the furnace’s heat exchanger, causing it to overheat. Replace or clean dirty or clogged filters. It will also depend on how much insulation you have around your ducts and how old your furnace is. When overheating, your furnace can trip a high limit switch, causing the furnace burners to shut off so that the heat exchanger does not crack. There are four main components of a furnace. Dirty Filter. 707-464-9529. If your furnace is blowing cold air, our team at ABC Plumbing, Sewer, Heating, Cooling and Electric can help. Additionally, here are a few troubleshooting tips for you to consider if your AC stops blowing cold air. It only takes one or more components to be out-of-whack, or not tended to that creates problems. If your Oil Furnace is Still Blowing Cold Air, Check Your Flame Sensor. A home furnace, heat pump, or heater blowing cold air isn’t necessarily a reason to panic. 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. 900 Northcrest Dr. Crescent City, CA 95531 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. #3 – The Furnace Has Overheated. If I shut if off for a few minutes and then try again, about half the time it will blow hot air. If gas supply is interrupted for any reason, the gas furnace … When an element malfunctions, you will need to call an HVAC professional. 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. Furnace in model # … 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. The fix: Duct sealing. Why let just anyone work on your unit? In this setting, your fan will run continuously and will blow cold air. Wrong thermostat setting. 1. 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. If it has, reset the breaker. AC works properly with a clean filter. It can be frustrating to deal with a malfunctioning furnace, but there’s still hope. Check if your thermostat is set to ON instead of AUTO. We’ve tried to troubleshoot the issues your furnace might be having. In such cases, a safety control device known as the limit switch will shut off the burners. The blower begins blowing, but does not blow warm air, only cold- it doesn't heat up. Furnace Still Blowing Cold Air? What shoul I do next or how do I identify the limit switch. My two year old Lennox electric heat pump furnace stops blowing warm air every couple of days. Here are some of the reasons your furnace might be blowing cold air: #1. It has an led indicator on the control panel that is blinking 4 times. Even if you have a gas furnace, they typically have an electric starter that ignites the gas burner. Troubleshooting a Furnace That's Blowing Cool Air. We offer furnace repair and maintenance throughout the Chicago area, and our talented technicians can handle any furnace problem you may encounter. Is the Pilot Light lit? Details. I replaced the thermostat and that did not fix it. Is my furnace not working?? blowing cold air furnace broken It was a dark and stormy night. 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. Here are 7 possible causes, and only some cost money to fix Ph: 425.402.4456 If your electric furnace is blowing cold air, it has power, but there may be something else that is preventing it from operating properly. If your furnace keeps blowing cold air, you may notice that your air filter is too dirty. The following are seven common problems that can cause your furnace to emit cold air. If your furnace is blowing cold air, it … It has a clean air filter in it also. If your furnace is blowing cold air, there are chances that someone has adjusted fan settings from ‘Auto’ to “On’. You’d want to take it to someone who’s certified to work on your make of car. The fuel system, the burners, the fan and the ductwork. If your furnace overheats, it could end up blowing cold air. Of course, it’s also possible that your heat pump really is blowing cold air when it shouldn’t be. Dirty Filters. This raises temperatures inside the furnace, and the limit switch shuts heating cycles down if the unit becomes too hot. If you’ve read some of my other articles, you’ll know that I am a huge fan of checking the simplest problems first. Then when the thermostat is switched to "emer", heat blows. I have an electric furnace that blow cold air sometimes. You wouldn’t take your car to just any mechanic. Furnaces can be dangerous if not serviced properly. 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. 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. 6. I can fix it by turning off the system and resetting the circuit breaker, but it gets pretty cold … All gas, oil, and electric furnaces are sensitive and calibrated pieces of equipment. In many cases, the solution is much simpler than you may realize. Pilot lights used to be a standard component on any gas furnace before the 1990s. Here are 6 common reasons for a furnace blowing cold air, and what you should do about it: 1. Electric Furnace. Frank’s Heating & Refrigeration. Make sure the thermostat’s screen is on and the buttons are responsive. Call 888-868-6667 today or contact us online to schedule furnace repairs in Chicago! See furnace repair details. Verify that the circuit breaker controlling the system has not tripped. Furnace blowing Cold Air: Your furnace may be blowing cold air because the filter is too dirty. If your heating elements are burned out, the system will blow cold air. This post shows some basic troubleshooting ideas to get your furnace blowing hot again. 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