This first solution is to add an additional air conditioner / heater, thermostat and modify the duct work system. If gas supply is interrupted for any reason, the gas furnace pilot light will go out. Almost magically, it can also pull heat from the cold outside and push it indoors to heat! Items in red usually require a service call. Below are some reasons you may be getting a blast of chilly air and how you can warm up your house as soon 1as possible. To protect the heater from malfunctioning altogether, engineers embed automatic limit switches that are responsible for turning the heat-generating furnace off. People’s comfort level where indoor temperature is concerned can vary. Without an effective heat exchange in the form of moving air, getting heat upstairs is really difficult. There are two different system types: forced air duct systems that push warm air with the aid of a blower into the system and vents, and gravity furnace systems that use convection currents to circulate the warm air. Then, there are dampers in the duct work that open and close based on which thermostat is calling for air or heat. It could even be running in the air conditioning mode due to a malfunction. The vents are closed in the basement, since it’s not used as living space. 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. HVAC & Electrical SC License: #M111708 Phone: (704) 321-4173 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). Solution: Change the air filter and see if your furnace starts only blowing warm air. Basically, the furnace isn’t lighting the fuel, meaning it can’t heat your home, either. Do I need a bigger air conditioner? The air upstairs is significantly colder than downstairs, in fact you can feel the change as you go up the stairs. 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 dirty air filter will block airflow, causing the furnace to run longer to heat your home until it overheats. A stuck bend door means the air does not get into the core to turn hot. As it cools, it becomes more dense and sinks. 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. This is plenty warm to heat your home to your desired 72°F. 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. Cold air is denser too so I would think that moving the cold air would be more effective. Well this could be caused by several things. Physics is the challenge here, because hot air rises and cold air sinks. The fan works when turned on but only blows cold air. 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. The heat is coming out of the vents in the living room and kitchen, but my infant's rooms and my room are freezing. Well this could be caused by several things. If your flame sensor is dirty, it may not recognize whether your burners have turned on. Please help! Heat rising upstairs will always take the path of least resistance, and the stairway allows a massive transfer of heated air to the upstairs. Just purchased a condo in AZ. My Heat Pump is Blowing Cold Air in “Heat” Mode! The pump is not leaking or making noise. COVID-19 Update From Ideal Energy--Keeping Customers & Employees Safe. 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). Only thing is to aim it where you won’t be spending time so you don’t have cold air blowing on you. Whatever you do, don't try blowing air from an enclosed basement room to the upstairs. Posted 12-22-14 in Heating. How to Improve Heat to a Second Floor. 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. 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. HVAC & Plumbing NC License: #16764 Then, turn the gas valve to the off position and wait five minutes. There are two possible routes here, one of which many homeowners who are new to heat pump systems encounter. Again, this will result in cold air being pushed through the system. Routine maintenance could have prevented this call from ever happening. Unreliable car heaters can make the cold winter months practically unbearable. It’s human nature to expect a simple explanation for a major problem. Reply. If I keep the bedroom door closed during the day, I will notice at least a 10-degree difference in temperature. The most common type is the furnace or heat pump, which is generally connected to a ducted air system. Does your thermostat have a setting that says "Fan"? If your heater is blowing cold air, then there are multiple possible causes for the issue. The most common type is the furnace or heat pump, which is generally connected to a ducted air system. Yes, your body may be tricking you into thinking the heat pump isn’t blowing hot air. Compromised flame sensor. 6. 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. If your central heating system is blowing out cold air, you'll have to follow these steps to repair it. Cold air is denser too so I would think that moving the cold air would be more effective. Helpful. But it is definitely still heating your home. 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. Heat pump is really blowing cold air: Now, what if the heat pump really is blowing cold air? Solution: Set the heater to its maximum setting, remove the coolant tank cap and fill it to the proper level. 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). Below is a list of possible causes. 2nd story homes consistently struggle to cool the upstairs and usually run 5+ degrees off from the thermostat reading on […] If your furnace is blowing cold air some of the time, but working otherwise, there are a few possible reasons for the problem. 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. Your gas supply could be turned off. So, here are 3 possible solutions. My upstairs doesn’t cool well. 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. Step 1 – Get Acquainted with Your Heating System. 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. It seems cold air is now blowing out of the intake vent and hot air is blowing out of the vents. This video will show you where you should start with your furnace troubleshooting. Don’t worry: we’ve outlined some of the most common causes of the problem below. When overheating, your furnace can trip a high limit switch, causing the furnace burners to shut off so that the heat … Hopefully, being patient will pay off and your heater will soon be sending warm cozy air throughout your home. 2. My furnace is blowing cold air, people tell me all the time in the winter. Here is a picture of stuff blowing out of intake vent. Does your thermostat have a setting that says "Fan"? As air gets hotter, it becomes less dense and rises. When your furnace isn’t running, the air in your ducts cools down. If your furnace starts blowing warm but then quickly turns cold, the flame sensor may need attention. Your furnace blowing cold air could be caused by hot air escaping through holes in the duct work that carries the heat throughout your building. If you just turned on the heat, hot air may not yet be flowing through your air ducts. Hot air rises and cold air sinks. Are you Hot Upstairs, Cold Downstairs? Q. 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. Helpful. Before we help you diagnose the problem, let’s make sure there is actually a problem. We wanted to address this, as many times homeowners think this is an issue with their heating and cooling system, but if they have a heat pump, it's actually typically a very normal process. In other words, it's not putting out any heat at all. That outside air in the mix lowers the temperature of the air that’s just come from your furnace. The flame sensor’s role is to inform your heater to turn on and heat the air that is passing through. In a two-story home it can be difficult to balance the temperatures between the upstairs and downstairs. 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. Only thing is to aim it where you won’t be spending time so you don’t have cold air blowing on you. If the furnace is cold, it cannot heat the air being propelled outside. Why Is My Heater Blowing Cold Air? 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. 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. 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. The cooler air is what ends up blowing into your living areas. First, confirm that the light is out. This might sound crazy, but a heat pump can be working just fine even if the air feels cold. At one time I thought about making a fan in a tube to take cold air from the upstairs … 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. In that case cool air will be running through the system This just means a simple thermostat adjustment. Inadequate gas supply. Don't panic if you see frost on your outside equipment's coil. Don't know if you have a heat pump? Again using Occam’s Razor, we can assume that the next likely culprit for your heater blowing cold air is your thermostat. Your roof absorbs a ton of heat from the sun, unless you have a lot of shady tree cover. The reason for this, is that in the cooling mode, the outdoor coil actually becomes hot. ... 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. Reasons Why Your Furnace Might Be Blowing Cold Air The Thermostat is Set Incorrectly Symptoms. It’s Defrosting. 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. By blocking off the stairway -- by hanging a blanket over the opening, using foam or wood panels or even building a door frame with a functional door -- you will close the largest path that heated air will take to move from downstairs to upstairs. This might sound crazy, but a heat pump can be working just fine even if the air feels cold. 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. Both units were made in '95 and installed a year later. To protect the outdoor coils from freezing up in the winter, heat pumps go through a defrosting period every hour or so in which they are truly blowing out cold air. Some other issues that may be causing your heat pump to malfunction include, low refrigerant, bad valves or a faulty metering device. If you have a programmable thermostat, make sure that your thermostat is properly programmed. 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 here are 3 common causes you can fix yourself. info@idealenergyaz.com4127 E. University DrivePhoenix, AZ 85034. With heat’s natural tendency to rise, temperatures in a home tend to stratify or layer. As air gets hotter, it becomes less dense and rises. Horne Heating and Air Conditioning Inc. If this doesn’t happen after 10 minutes, then you are looking at another issue. If you’ve just bumped up the temperature or if you’ve just turned your furnace on all together, it may just be as simple as your heater needs some time to warm up. A dirty air filter blocks airflow over the furnace’s heat exchanger, causing it to overheat. Warm air rises. 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. Have an expert inspect your ducts along with the furnace. The first thing you have to do is check to see what type system you own. 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. There are two possible routes here, one of which many homeowners who are new to heat pump systems encounter. Hot roof. Furnace not working. The reason the fan shuts off during this process is so the system doesn't pull the cold air from the outside across the coil while the hot refrigerant circulates. Learn how to test your air ducts for leaks. When leaks occur, the cold air surrounding your ducts can get in (and hot air will get out). Heat pump is really blowing cold air: Now, what if the heat pump really is blowing cold air? Don't panic if steam comes out of the top of the outside equipment. Check out this article, on how to tell if your unit is a heat pump or air conditioner. hi I have a lennox cb28-uh-036-230-02, two systems running, one for downstairs and one for upstairs. on Jun 14, 2017. So Why Is My Furnace Blowing Cold Air Instead Of Heat? It’s a chilly problem that no one should have to deal with during winter in the Atlanta area! It can also stop the burners from igniting. Have you cranked up your thermostat to knock the chill down only to discover that your heater is The air coming out of the vents upstairs is about the same as the cool room temperature. Naturally, all heaters use a fan to blow air, but if your fan setting is set to ‘on’ throughout the day, it explains why the heater seems like it has malfunctioned. Elaine. on Jun 14, 2017. The first thing you have to do is check to see what type system you own. 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. By replacing the register covers with register/fan units more cold air is forced out of the upstairs ducts. Check to see if you have tripped a breaker. If your Oil Furnace is Still Blowing Cold Air, Check Your Flame Sensor. Still running, but not cold, no condensatio … read more If your furnace seems to be blowing cold air, it could be a problem with the ignition system. In other words, it's not putting out any heat at all. What to do: Go to your thermostat. Pilot Light Issues 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). 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. You can fix this problem by following the instructions for how to relight your furnace’s pilot light. 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. Last week, at one point, I turned AC on and cold air was blowing out of return instead of sucking and no air was coming out of supply's. The resulting depressurization could cause a big backdraft. You may have noticed a loud sound right before cold air blows out through the vents in your home. A. I get asked this question frequently. It could even be running in the air conditioning mode due to a malfunction. Solution #1 – Add an additional unit, thermostat and modify the duct work. Allow your system to run for 5-10 minutes to see if the air warms. If you only feel your furnace blowing cold air briefly, and the air is quickly replaced by warm air, this is … 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. Most thermostats have three settings - Heat, Cool, Fan. Unfortunately, these are issues that will need to be remedied by a professional. 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. 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. 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. A dirty air filter blocks airflow over the furnace’s heat exchanger, causing it to overheat. I always use a fan blowing up the stairwell. Details I have been told to try and replace the water pump. 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. Even if you have a gas furnace, they typically have an electric starter that ignites the gas burner. Your furnace may be blowing cold air because the filter is too dirty. The sound you hear is the reversing valve switching your unit over to cooling mode. Let us explain… The air could be warm but still feel cool. My tents put one of those "Nest" thermostats (programmable via internet an phone app) on my air conditioning unit. If it’s dirty, it may not determine if your burners are on. Your System Was Just Turned On. Most thermostats have three settings - Heat, Cool, Fan. In a two-story home it can be difficult to balance the temperatures between the upstairs and downstairs. An air lock prevents the coolant from circulating properly and can cut your heat output. If your heat pump has iced over or if drifting snow has covered up the unit, this can cause a malfunction. Will a badly worn impeller on the water pump be my problem. Simply put, the furnace inside the equipment needs to get heated up for the fan to emit warm air. Your Fan Is On 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. But your HVAC system is very complicated. Please help! Our upstairs heat is working fine, but there is no heat downstairs even though the thermostat says the heat is on. Thermostat: A Furnace Blowing Cold Air Could be Due to Your Thermostat. 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 is something you can easily fix yourself. Items in red usually require a service call. This is the reason that it takes a while for heaters to start blowing warm air. This will lead to heat blowing out cold air. Solution #1 – Add an additional unit, thermostat and modify the duct work. Improper Insulation: Especially in old houses or cabins, there’s no real insulation.