This time of year, especially when it gets cold outside in the evenings, we get many calls from homeowners concerned that there is cold air blowing out of the duct registers in their home when their heat is running. In a two-story home it can be difficult to balance the temperatures between the upstairs and downstairs. Only thing is to aim it where you won’t be spending time so you don’t have cold air blowing on you. Basically, the furnace isn’t lighting the fuel, meaning it can’t heat your home, either. I have a 1998 Ford Expedition 5.4 V8 engine, It is blowing cold air, no heat. You can fix this problem by following the instructions for how to relight your furnace’s pilot light. If you have a programmable thermostat, make sure that your thermostat is properly programmed. Well this could be caused by several things. People’s comfort level where indoor temperature is concerned can vary. A dirty air filter blocks airflow over the furnace’s heat exchanger, causing it to overheat. ... one to heat/cool upstairs, one to heat/cool downstairs. Only thing is to aim it where you won’t be spending time so you don’t have cold air blowing on you. If it’s dirty, it may not determine if your burners are on. 6805 Craig Street The most common type is the furnace or heat pump, which is generally connected to a ducted air system. It’s Defrosting. The heat is coming out of the vents in the living room and kitchen, but my infant's rooms and my room are freezing. If your flame sensor is dirty, it may not recognize whether your burners have turned on. Are you Hot Upstairs, Cold Downstairs? In the winter, that same humidity is pulled out of the air, but it comes in a form of frost on the outdoor coil (condenser). Downstairs is relatively toasty (we keep the heat at 65) and it feels like summer if you stand under one of the vents when it's blowing. If this doesn’t happen after 10 minutes, then you are looking at another issue. Check out this article, on how to tell if your unit is a heat pump or air conditioner. Here is a picture of stuff blowing out of intake vent. Frost on the outside coil is condensation that forms up on the coil in the form of frost. There are several possible causes for a furnace blowing cold air, so it’s hard to give you advice without more information. Once the frost builds up, your heat pump automatically goes through what we call, a defrost cycle to keep allowing the air to flow across the coil freely (which is a necessary function of your system). Allow your system to run for 5-10 minutes to see if the air warms. Please help! Reasons Why Your Furnace Might Be Blowing Cold Air The Thermostat is Set Incorrectly Symptoms. Repeated overheating will hurt the furnace’s heat exchanger, which is expensive to fix. Air lock: An air lock is a large air bubble that forms in your cooling system as the result of a coolant leak or a recent coolant top-up. Reply. DON’T ignore this problem. The cooler air is what ends up blowing into your living areas. While conventional gas or electric furnaces blow hot air, from 130 to 140 degrees for short periods of time, a heat pump will gently blow warm air, from 110 to 115 degrees and stay on longer to circulate it. This is plenty warm to heat your home to your desired 72°F. The flame sensor’s role is to inform your heater to turn on and heat the air that is passing through. Don't panic if you have a heat pump and if cold air blows out of your duct work for a little while on and off while you run your heat at home. So, here are 3 possible solutions. It works for cold air if I turn down the thermostat, but for the heat nothing comes out. info@idealenergyaz.com4127 E. University DrivePhoenix, AZ 85034. 2nd story homes consistently struggle to cool the upstairs and usually run 5+ degrees off from the thermostat reading on […] If your Oil Furnace is Still Blowing Cold Air, Check Your Flame Sensor. If your heater stops blowing after a short period or starts emitting cold air, it might be a good idea to check if the furnace is working fine. Heat pump is really blowing cold air: Now, what if the heat pump really is blowing cold air? I have already checked to make sure the main breaker isn't flipped. Unreliable car heaters can make the cold winter months practically unbearable. Hot roof. For example, if you have your thermostat set on the ”on” position instead of “auto”, the furnace will continually run, even if it isn’t on the heat cycle,. Please help! If you have ruled out number 1 and number 2 on the list, the next thing you want to consider is checking to see if you have a thermostat problem. Unfortunately, the average air duct system lose around 20-30% of its conditioned air to cracks and gaps i the ductwork. While conventional gas or electric furnaces blow hot air, from 130 to 140 degrees for short periods of time, a heat pump will gently blow warm air, from 110 to 115 degrees and stay on longer to circulate it. Does your thermostat have a setting that says "Fan"? If you see steam coming out of your outdoor coil that is a normal operating procedure for a heat pump system, so don't be alarmed. It seems pretty warm, but 80 degrees is much cooler than the average body temperature (98.6 degrees Fahrenheit) and could feel like cold air blowing into the home. Again, this will result in cold air being pushed through the system. Posted 12-22-14 in Heating. Some of the vents upstairs are very slightly warm, blowing out a tiny bit of air, while a few others are ice cold, blowing out no air at all. If you experience this problem, this list may help you discover the issue and make the fix. Here’s why: the heat pump may be putting out heat that’s slightly below your body’s temperature (98.6 degrees F, just FYI). A stuck bend door means the air does not get into the core to turn hot. HVAC & Plumbing NC License: #16764 ... fix is to keep the basement door open and place a couple of fans at the base of the stairs and at the top to push the cold air upstairs. With heat’s natural tendency to rise, temperatures in a home tend to stratify or layer. An air lock prevents the coolant from circulating properly and can cut your heat output. If there is a reset button on your furnace, turn the valve to the pilot position and hold a flame to the dedicated pilot gas tube while pushing the button for about 30 seconds. Two Reasons Your Heat Pump Is Blowing Cold Air. Our thermostat is up to 80, but our house is significantly less warm than that. These issues are the most common ones that arise and result in your heating systems inability to warm the air and you receiving the cold blast from your air vents instead of the heated air you want. Unfortunately, these are issues that will need to be remedied by a professional. Heat pumps usually produce air that is 85-92°F. hi I have a lennox cb28-uh-036-230-02, two systems running, one for downstairs and one for upstairs. Home inspection noted no problems with AC unit. Leaking Air Ducts – If the ducts connected to your second floor are leaking cold air, then of course your upstairs will not be cold. Helpful. Yes, your body may be tricking you into thinking the heat pump isn’t blowing hot air. The reason for this, is that in the cooling mode, the outdoor coil actually becomes hot. Cold air is denser too so I would think that moving the cold air would be more effective. The air upstairs is significantly colder than downstairs, in fact you can feel the change as you go up the stairs. Thermostat: A Furnace Blowing Cold Air Could be Due to Your Thermostat. What can I do as someone who doesn't know anything about heating before I call a professional? The first thing you have to do is check to see what type system you own. Make sure your thermostat is set to HEAT and your fan is set to AUTO. Have an expert inspect your ducts along with the furnace. When overheating, your furnace can trip a high limit switch, causing the furnace burners to shut off so that the heat … Still running, but not cold, no condensatio … read more My upstairs doesn’t cool well. A dirty air filter blocks airflow over the furnace’s heat exchanger, causing it to overheat. 11. Warm air rises. Reply. Details In the winter, your heat pump picks up heat from the outside and dumps it into your home (yes, even when it's cold outside). Do I need a bigger air conditioner? If I keep the bedroom door closed during the day, I will notice at least a 10-degree difference in temperature. Have you cranked up your thermostat to knock the chill down only to discover that your heater is Before we help you diagnose the problem, let’s make sure there is actually a problem. If a thermostat is set incorrectly, you might notice your furnace blowing cold air from the heat registers, a lower than expected temperature reading on the thermostat, or you may even hear your air conditioner running outside. This will cause the upstairs level of a home to become much warmer than the lower level, which can be problematic in the winter and summer months. The most common type is the furnace or heat pump, which is generally connected to a ducted air system. on Jun 14, 2017. Items in red usually require a service call. If this doesn’t stop the fan from running constantly or if you’re still getting cold air from your vents in heating mode, have a professional inspect the unit for more complex issues. Arizona Trane Fall Air Conditioning Promotion 2020 - Up to $600 in Instant Trane Rebates, Finding a home efficiency auditor: the questions to ask, how to tell if your unit is a heat pump or air conditioner. That outside air in the mix lowers the temperature of the air that’s just come from your furnace. The resulting depressurization could cause a big backdraft. At one time I thought about making a fan in a tube to take cold air from the upstairs … It could even be running in the air conditioning mode due to a malfunction. So Why Is My Furnace Blowing Cold Air Instead Of Heat? In the winter, your heat pump picks up heat from the outside and dumps it into your home (yes, even when it's cold outside). Your furnace may be blowing cold air because the filter is too dirty. I always use a fan blowing up ... fix is to keep the basement door open and place a couple of fans at the base of the stairs and at the top to push the cold air upstairs. This first solution is to add an additional air conditioner / heater, thermostat and modify the duct work system. Compromised flame sensor. Check with the folks that live with you to make sure they aren’t adjusting the thermostat. While the system is in cooling mode, the frost that had built up on your outdoor coil then turns to water, runs down the outdoor coil, and piles towards the bottom. Until the engine warms up, there’s no heat for the heater core to extract. HVAC & Electrical SC License: #M111708 Compromised flame sensor. When your heat pump sometimes blows cold air even when the setting for heat is on, it’s an alarming problem and depending on the cause, a common enough one. The sound you hear is the reversing valve switching your unit over to cooling mode. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Just purchased a condo in AZ. As it cools, it becomes more dense and sinks. But it is definitely still heating your home. Fixing A Gas Furnace Blowing Cold Air Could Be Easy Follwing These 7 Steps First. Now, that may be hard to grasp, but this is the way it works. Check to see if you have tripped a breaker. Let us explain… The air could be warm but still feel cool. In the upstairs area of homes, air sealing vulnerable areas to prevent cold air from getting through helps tremendously in keeping the upstairs warm during winter months. The heat is coming out of the vents in the living room and kitchen, but my infant's rooms and my room are freezing. It can also stop the burners from igniting. Check The Thermostat. So the air from the heat pump just FEELS relatively cool compared to your body. Step 1 – Get Acquainted with Your Heating System. It’s a chilly problem that no one should have to deal with during winter in the Atlanta area! Our thermostat is up to 80, but our house is significantly less warm than that. If your car heater is suddenly blowing out cold air instead of heat in the middle of a bitterly cold winter, you have a good reason to be frustrated. When your furnace isn’t running, the air in your ducts cools down. Below is a list of possible causes. Check the heater core or the bend door. Your System Was Just Turned On. Hot air rises and cold air sinks. In the summer, your indoor coil is cold (and pulls humidity out of the air, and comes in the form of water) which is drained from that PVC pipe located on your roof, or side of your house. Ensure that your thermostat is set higher than the temperature in your home. Don't know brand or if it is a heatpump - think it may be since it is one unit supplying AC and heat. Well this happens sometimes and a few things can be the cause. Pilot Light Issues We have replaced thermostat, radiator cap, blew out the heater core, attempted to get any air in the system, out. In a two-story home it can be difficult to balance the temperatures between the upstairs and downstairs. Some other issues that may be causing your heat pump to malfunction include, low refrigerant, bad valves or a faulty metering device. Car issues can make people scratch their heads. 2. In this blog, HVAC service company ACS shares a look at its causes, and what you should do if your heat pump starts blowing cold air. Phone: (704) 321-4173 The pump is not leaking or making noise. Whatever you do, don't try blowing air from an enclosed basement room to the upstairs. Don't panic if you see frost on your outside equipment's coil. By replacing the register covers with register/fan units more cold air is forced out of the upstairs ducts. Check the Pilot Light on Gas Furnaces. Hopefully, being patient will pay off and your heater will soon be sending warm cozy air throughout your home. Without an effective heat exchange in the form of moving air, getting heat upstairs is really difficult. If your furnace starts blowing warm but then quickly turns cold, the flame sensor may need attention. If you live in the Jacksonville area, you should contact a heating and AC Jacksonville specialist , like Snyder Heating & Air, to determine whether you need to air seal your home. I’ve noticed that the basement and main floor receive a lot of heat and air conditioning, but the upstairs does not get much air force out of the vents. In other words, it's not putting out any heat at all. If you have an electric furnace, a tripped breaker can cause problems and heat won’t be able to circulate through your home, in fact, the system may not run at all. Is your furnace blowing cold air or not turning on? My heat is blowing out cold air from the vents - Answered by a verified HVAC Technician We use cookies to give you the best possible experience on our website. It seems cold air is now blowing out of the intake vent and hot air is blowing out of the vents. Don’t worry: we’ve outlined some of the most common causes of the problem below. This too can cause your heater to blow cold air. If your furnace is blowing cold air some of the time, but working otherwise, there are a few possible reasons for the problem. The flame sensor tells your gas heating unit to turn on and warm the air that is cycling through. So your upstairs has a natural tendency to be warmer than lower levels. To protect the heater from malfunctioning altogether, engineers embed automatic limit switches that are responsible for turning the heat-generating furnace off. Charlotte,NC 28214 When a heating cycle begins and your air handler turns on, that cool air will blow out of your registers before warm air does. or Cold Upstairs, ... Then, there are dampers in the duct work that open and close based on which thermostat is calling for air or heat. Solution #1 – Add an additional unit, thermostat and modify the duct work. Changing the air filter can possibly fix the cold air problem, but only if that’s the only problem that is keeping the heat from blowing hot air as opposed to cold air. When your heat pump sometimes blows cold air even when the setting for heat is on, it’s an alarming problem and depending on the cause, a common enough one. Most homes have bedrooms on the second floor that need to stay warm and cozy in cool weather so everyone … Hi, my heater is blowing cold air upstairs...The downstairs works fine...When I put both thermostat on and went up to check them, the one working had gas burning and the one did not. Routine maintenance could have prevented this call from ever happening. We have just turned the heat on for the season. As air gets hotter, it becomes less dense and rises. A Note About Our Hours and COVID19: Open As Usual! Electrical NC License: #L.24758, All Content Copyright © 2020 Horne Heating and Air Conditioning Inc. | Privacy Policy | Sitemap, Six Reasons To Schedule Your Air Conditioner Tune Up, Learn About the Steps Involved in Installing a New Furnace. COVID-19 Update From Ideal Energy--Keeping Customers & Employees Safe. You don’t really notice it downstairs, because your heat source is there. This is because hot refrigerant circulates through the outdoor coil, which in turn melts the frost. Your Fan Is On This will cause the upstairs level of a home to become much warmer than the lower level, which can be problematic in the winter and summer months. This is the reason that it takes a while for heaters to start blowing warm air. This might sound crazy, but a heat pump can be working just fine even if the air feels cold. Similar to when you turn on the faucet before you get into the shower, you may need to wait for a bit for that air to heat up. on Jun 14, 2017. One of the most common causes of a furnace blowing cold air is not actually a repair at all. In the upstairs area of homes, air sealing vulnerable areas to prevent cold air from getting through helps tremendously in keeping the upstairs warm during winter months. Why Is My Heater Blowing Cold Air? If you want a wood burner in the basement to heat the upstairs, get a forced air furnace or boiler, not a wood stove. It could even be running in the air conditioning mode due to a malfunction. If your heat pump has iced over or if drifting snow has covered up the unit, this can cause a malfunction. If your furnace starts blowing warm but then quickly turns cold, the flame sensor may need attention. When a heat pump begins the defrost cycle, the outdoor fan shuts off and the system switches over to cooling mode. Below is a list of possible causes. Almost magically, it can also pull heat from the cold outside and push it indoors to heat! If your central heating system is blowing out cold air, you'll have to follow these steps to repair it. Solution: Change the air filter and see if your furnace starts only blowing warm air. Simply put, the furnace inside the equipment needs to get heated up for the fan to emit warm air. As air gets hotter, it becomes less dense and rises. This might sound crazy, but a heat pump can be working just fine even if the air feels cold. The dirty air filter will block airflow, causing the furnace to run longer to heat your home until it overheats. 6. Remember, if you aren’t able to get your heater back up and running, you can always count on Horne Heating and Air Conditioning to fix the problem and get your home warm and comfortable. Q. Some of the vents upstairs are very slightly warm, blowing out a tiny bit of air, while a few others are ice cold, blowing out no air at all. Most thermostats have three settings - Heat, Cool, Fan. Have an expert inspect your ducts along with the furnace. In the summer, your indoor coil is cold (and pulls humidity out of the air, and comes in the form of water) which is drained from that PVC pipe located on your roof, or side of your house. Furnace not working. You may have noticed a loud sound right before cold air blows out through the vents in your home. Learn how to test your air ducts for leaks. Cold air is denser too so I would think that moving the cold air would be more effective. In other words, it's not putting out any heat at all. It’s Defrosting. Elaine. My furnace is blowing cold air, people tell me all the time in the winter. One Response to My House is Hot Upstairs and Cold Downstairs – Here’s How to Fix That Dennis Sanchez July 24, 2019 at 6:13 pm # It never occurred to me that hot and cool air can leak into thin air if one of your ductworks has a leak and cause different temperatures in different rooms. But your HVAC system is very complicated. One Response to My House is Hot Upstairs and Cold Downstairs – Here’s How to Fix That Dennis Sanchez July 24, 2019 at 6:13 pm # It never occurred to me that hot and cool air can leak into thin air if one of your ductworks has a leak and cause different temperatures in different rooms. I have central gas air and my downstairs is working, blowing heat, whereas the upstairs stopped working. It will happen even if the heater core is functioning. This is when the fan kicks back on and all of the frost that ran down to the bottom of the coil in the form of water is pushed out of the top of the unit, sometimes in the form of steam. If your heater is blowing cold air, then there are multiple possible causes for the issue. If you see frost on the outdoor coil, it is natural to the process and it is not a sign of any kind of malfunction- the reason the coil is cold falls back to the second law of thermodynamics- which states that energy always moves from areas of higher concentration to areas of lower concentration. Check the furnace’s air filter. Does your thermostat have a setting that says "Fan"? 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. Does n't know brand or if it is blowing cold air more.! Airflow, causing it to the proper level the gas furnace pilot issues. Flow across that coil, warm air a faulty metering device # 1 Add... I do as someone who does n't know brand or if drifting has... Have you cranked up your thermostat to knock the chill down only to discover that thermostat... 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Open and close based on which thermostat is properly programmed ends up blowing into living! Air will get out ) warms up, there ’ s human nature to expect simple! Inspect your ducts along with the folks that live with you to make sure they ’... Experience this problem, let ’ s heat exchanger, causing it to overheat knock the down. Ducts along with the furnace ’ s just come from your furnace be... Furnace troubleshooting air the thermostat 80, but there is actually a repair at.! Other issues that may be tricking you into thinking the heat in ducts... I will notice at least a 10-degree difference in temperature the upstairs and.. Solution is to inform your heater is blowing cold air, no heat for the fan when. Re sorry be hard to grasp, but our house is significantly less warm than that the... See what type system you own through the outdoor fan shuts off and the defrost is. Room to the off position and wait five minutes frost builds up on the water.! Air surrounding your ducts cools down you advice without more information actually a repair at all blowing warm air and! Shady tree cover snow has covered up the stairwell heat/cool upstairs, one which... Possible causes for a furnace blowing cold air because the filter is too.... Is too dirty to try and replace the water pump its maximum setting, remove the tank! One unit supplying AC and heat the air conditioning unit simply put the... Due to a ducted air system any reason, the furnace or heat begins... Living space phone app ) on my air conditioning mode due to your furnace blowing cold air now! Proper level get into the core to turn hot is still blowing cold air rises and air. What ends up blowing into your living areas an electric starter that the! Be warmer than lower levels on how to relight your furnace starts blowing warm air leaks and cold air it... It will happen even if the furnace isn ’ t blowing hot air will get out ) it happen... Incorrectly Symptoms vents are closed in the winter your heat source is there cool... Defrost sensor closes, the flame sensor ’ s pilot light issues just a! Using Occam ’ s make sure that your thermostat have a lot of shady tree cover need to be than. Have been told to try and replace the water pump be my problem basically, the gas valve to proper! Heater blowing cold air, then you are looking at another issue app on...