6. #3 – The Furnace Has Overheated. A breaker that continues to trip is an indication of a short circuit or other malfunction. Electric heaters require power. Before you call a pro, try these fixes: First, check your thermostat. 6. If I shut if off for a few minutes and then try again, about half the time it will blow hot air. 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. Additionally, here are a few troubleshooting tips for you to consider if your AC stops blowing cold air. Usually, a filter needs to be replaced every two months, or your unit may have a different specification. The fan blows fine. 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. 2. This air might not always be cold, and could be room temperature as well. And remember: Routine furnace maintenance is the best way to avoid a costly emergency HVAC repair. Is your furnace blowing cold air? Details. Dust and debris in your indoor environment can usually accumulate around the filters. If your furnace is blowing cold air, there are chances that someone has adjusted fan settings from ‘Auto’ to “On’. If it has, reset the breaker. It has an led indicator on the control panel that is blinking 4 times. When an element malfunctions, you will need to call an HVAC professional. Or I Why let just anyone work on your unit? We offer furnace repair and maintenance throughout the Chicago area, and our talented technicians can handle any furnace problem you may encounter. Heater blowing cold air; Furnace won’t turn on; First, Check Your Thermostat Setting. You’d want to take it to someone who’s certified to work on your make of car. When your pilot light is out, an otherwise perfectly functioning furnace will not provide heat for your home. If your furnace is blowing cold air, it … 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. It has a clean air filter in it also. The furnace blowing cold air, or there is no heat in the house. I have an electric furnace that blow cold air sometimes. If they’re not, try changing the batteries. Check if your thermostat is set to ON instead of AUTO. 1. If your Oil Furnace is Still Blowing Cold Air, Check Your Flame Sensor. A/C & Refrigeration offers HVAC Repair to Phoenix Valley homes and businesses. This post shows some basic troubleshooting ideas to get your furnace blowing hot again. 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. Pilot lights used to be a standard component on any gas furnace before the 1990s. A dirty air filter hinder air movement through the furnace. 707-464-9529. Schedule furnace repair today . Electric Furnace. Frank’s Heating & Refrigeration. Furnace Still Blowing Cold Air? 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. Is The Thermostat Set To Auto or On? If your heating elements are burned out, the system will blow cold air. The longer you run a broken furnace, the greater your chances of inflicting permanent or serious damage. Cold air trapped inside will need to be expelled before the hot air can take its place! Related: Heat Pump vs. Air Conditioner and Gas Furnace, Which is Better? Verify that the circuit breaker controlling the system has not tripped. In many cases, the solution is much simpler than you may realize. The fix: Duct sealing. 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. I?ve had people say to me, ?My furnace blows cold air only! In this setting, your fan will run continuously and will blow cold air. Troubleshooting a Furnace That's Blowing Cool Air. Furnaces can be dangerous if not serviced properly. If your furnace keeps blowing cold air, you may notice that your air filter is too dirty. If you’ve read some of my other articles, you’ll know that I am a huge fan of checking the simplest problems first. 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. Here are 6 common reasons for a furnace blowing cold air, and what you should do about it: 1. Replace the old air filter. This raises temperatures inside the furnace, and the limit switch shuts heating cycles down if the unit becomes too hot. 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. 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. Make sure the thermostat’s screen is on and the buttons are responsive. All gas, oil, and electric furnaces are sensitive and calibrated pieces of equipment. Is my furnace not working?? AC works properly with a clean filter. Electric furnaces pull air through a filter before it heats it. A dirty air filter blocks airflow over the furnace’s heat exchanger, causing it to overheat. Furnace blowing Cold Air: Your furnace may be blowing cold air because the filter is too dirty. If your furnace is blowing cold air, give us a call today! What shoul I do next or how do I identify the limit switch. If gas supply is interrupted for any reason, the gas furnace … Pilot Light. blowing cold air furnace broken It was a dark and stormy night. Is the Pilot Light lit? The fuel system, the burners, the fan and the ductwork. It only takes one or more components to be out-of-whack, or not tended to that creates problems. The lukewarm air coming out of your furnace can also be the result of leaky air ducts. Here are some of the reasons your furnace might be blowing cold air: #1. The blower begins blowing, but does not blow warm air, only cold- it doesn't heat up. If you can’t figure out the issue, give us a call and we will inspect your furnace. If you have a dirty filter, replacing the filter typically stops cold air from blowing. Call 888-868-6667 today or contact us online to schedule furnace repairs in Chicago! It will also depend on how much insulation you have around your ducts and how old your furnace is. Dirty Filters. 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