Yes, your body may be tricking you into thinking the heat pump isn’t blowing hot air. As soon as the thermostat registers that the temperature has fallen below a certain threshold point, the system kicks on, blowing furnace-heated air … 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. Or the gas line isn’t supplying enough gas to your furnace. Elaine. 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). hi I have a lennox cb28-uh-036-230-02, two systems running, one for downstairs and one for upstairs. Don't know brand or if it is a heatpump - think it may be since it is one unit supplying AC and heat. It can also prevent them from igniting. Because of the missing insulation, warm air leaks and cold air comes in. 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. This too can cause your heater to blow cold air. Phone: (704) 321-4173 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. Helpful. If your pilot light refuses to remain lit, this is an indication of a problem that will need to be fixed by a professional. Solution: Change the air filter and see if your furnace starts only blowing warm air. Even if you have a gas furnace, they typically have an electric starter that ignites the gas burner. You can fix this problem by following the instructions for how to relight your furnace’s pilot light. If your furnace is blowing cold air, we’re sorry! This first solution is to add an additional air conditioner / heater, thermostat and modify the duct work system. Unfortunately, these are issues that will need to be remedied by a professional. Warm air rises. Again using Occam’s Razor, we can assume that the next likely culprit for your heater blowing cold air is your thermostat. on Jun 14, 2017. 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). This is plenty warm to heat your home to your desired 72°F. 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. Don’t worry: we’ve outlined some of the most common causes of the problem below. If you experience this problem, this list may help you discover the issue and make the fix. 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. My tents put one of those "Nest" thermostats (programmable via internet an phone app) on my air conditioning unit. 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. 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. 2. Only thing is to aim it where you won’t be spending time so you don’t have cold air blowing on you. If you want a wood burner in the basement to heat the upstairs, get a forced air furnace or boiler, not a wood stove. If your furnace starts blowing warm but then quickly turns cold, the flame sensor may need attention. In a two-story home it can be difficult to balance the temperatures between the upstairs and downstairs. 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. 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. A Note About Our Hours and COVID19: Open As Usual! Your furnace may be blowing cold air because the filter is too dirty. Hot air rises and cold air sinks. A. I get asked this question frequently. 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. Routine maintenance could have prevented this call from ever happening. That outside air in the mix lowers the temperature of the air that’s just come from your furnace. Elaine. If your heat pump has iced over or if drifting snow has covered up the unit, this can cause a malfunction. To protect the heater from malfunctioning altogether, engineers embed automatic limit switches that are responsible for turning the heat-generating furnace off. 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. Is your furnace blowing cold air or not turning on? 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. Are you Hot Upstairs, Cold Downstairs? In other words, it's not putting out any heat at all. Furnace not working. You don’t really notice it downstairs, because your heat source is there. By replacing the register covers with register/fan units more cold air is forced out of the upstairs ducts. My Heat Pump is Blowing Cold Air in “Heat” Mode! Car issues can make people scratch their heads. Pilot Light Issues Before we help you diagnose the problem, let’s make sure there is actually a problem. The reason for this, is that in the cooling mode, the outdoor coil actually becomes hot. Items in red usually require a service call. I have central gas air and my downstairs is working, blowing heat, whereas the upstairs stopped working. The vents are closed in the basement, since it’s not used as living space. Our upstairs heat is working fine, but there is no heat downstairs even though the thermostat says the heat is on. The air coming out of the vents upstairs is about the same as the cool room temperature. The sound you hear is the reversing valve switching your unit over to cooling mode. Whatever you do, don't try blowing air from an enclosed basement room to the upstairs. 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 dirty air filter will block airflow, causing the furnace to run longer to heat your home until it overheats. Reply. We have replaced thermostat, radiator cap, blew out the heater core, attempted to get any air in the system, out. Quickly shut thermostat off and then on again and problem was solved. 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. Home inspection noted no problems with AC unit. 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. Heat pumps usually produce air that is 85-92°F. So your upstairs has a natural tendency to be warmer than lower levels. 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. If your flame sensor is dirty, it may not recognize whether your burners have turned on. Both units were made in '95 and installed a year later. 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. 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. Simply put, the furnace inside the equipment needs to get heated up for the fan to emit warm air. Well this could be caused by several things. 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. 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. My furnace is blowing cold air, people tell me all the time in the winter. In that case cool air will be running through the system This just means a simple thermostat adjustment. 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. Let us explain… The air could be warm but still feel cool. If this doesn’t happen after 10 minutes, then you are looking at another issue. 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. But here are 3 common causes you can fix yourself. If you only feel your furnace blowing cold air briefly, and the air is quickly replaced by warm air, this is … The heat is coming out of the vents in the living room and kitchen, but my infant's rooms and my room are freezing. 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. Heat pumps that blow cold air is not as common a problem, yet it does happen, and can be caused by one or more factors. I have been told to try and replace the water pump. Check the Pilot Light on Gas Furnaces. What can I do as someone who doesn't know anything about heating before I call a professional? I have a 1998 Ford Expedition 5.4 V8 engine, It is blowing cold air, no heat. Compromised flame sensor. Now, that may be hard to grasp, but this is the way it works. We have just turned the heat on for the season. This might sound crazy, but a heat pump can be working just fine even if the air feels cold. It could even be running in the air conditioning mode due to a malfunction. 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. I always use a fan blowing up the stairwell. Please help! But your HVAC system is very complicated. The first thing you have to do is check to see what type system you own. When it gets jammed, the heater will be blowing cold air. The cooler air is what ends up blowing into your living areas. Please help! Step 1 – Get Acquainted with Your Heating System. The resulting depressurization could cause a big backdraft. If your furnace seems to be blowing cold air, it could be a problem with the ignition system. Improper Insulation: Especially in old houses or cabins, there’s no real insulation. Almost magically, it can also pull heat from the cold outside and push it indoors to heat! Ensure that your thermostat is set higher than the temperature in your home. Check The Thermostat. At one time I thought about making a fan in a tube to take cold air … Just purchased a condo in AZ. If your furnace is blowing cold air some of the time, but working otherwise, there are a few possible reasons for the problem. Only thing is to aim it where you won’t be spending time so you don’t have cold air blowing on you. 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. 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. This video will show you where you should start with your furnace troubleshooting. Inadequate gas supply. 6805 Craig Street It’s Defrosting. 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. Have an expert inspect your ducts along with the furnace. If gas supply is interrupted for any reason, the gas furnace pilot light will go out. You may have noticed a loud sound right before cold air blows out through the vents in your home. If your Oil Furnace is Still Blowing Cold Air, Check Your Flame Sensor. Do I need a bigger air conditioner? 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. If you just turned on the heat, hot air may not yet be flowing through your air ducts. If your heater is blowing cold air, then there are multiple possible causes for the issue. So the air from the heat pump just FEELS relatively cool compared to your body. 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). 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. When a heat pump begins the defrost cycle, the outdoor fan shuts off and the system switches over to cooling mode. Until the engine warms up, there’s no heat for the heater core to extract. Now, that may be hard to grasp, but this is the way it works. Leaking Air Ducts – If the ducts connected to your second floor are leaking cold air, then of course your upstairs will not be cold. Horne Heating and Air Conditioning Inc. Your Fan Is On So, here are 3 possible solutions. Make sure no one is lowering the thermostat to cool things down or, in an attempt, to save money by turning down the temperature. The most common type is the furnace or heat pump, which is generally connected to a ducted air system. So Why Is My Furnace Blowing Cold Air Instead Of Heat? This will lead to heat blowing out cold air. info@idealenergyaz.com4127 E. University DrivePhoenix, AZ 85034. Some other issues that may be causing your heat pump to malfunction include, low refrigerant, bad valves or a faulty metering device. It's all part of the process of heating your home with a heat pump! When overheating, your furnace can trip a high limit switch, causing the furnace burners to shut off so that the heat … Well this could be caused by several things. Physics is the challenge here, because hot air rises and cold air sinks. Then, turn the gas valve to the off position and wait five minutes. Allow your system to run for 5-10 minutes to see if the air warms. It can also stop the burners from igniting. Unfortunately, the average air duct system lose around 20-30% of its conditioned air to cracks and gaps i the ductwork. One of the most common causes of a furnace blowing cold air is not actually a repair at all. 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. There are two possible routes here, one of which many homeowners who are new to heat pump systems encounter. 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. At one time I thought about making a fan in a tube to take cold air from the upstairs … An air lock prevents the coolant from circulating properly and can cut your heat output. 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. Your gas supply could be turned off. As air gets hotter, it becomes less dense and rises. If I keep the bedroom door closed during the day, I will notice at least a 10-degree difference in temperature. How to Improve Heat to a Second Floor. Check out this article, on how to tell if your unit is a heat pump or air conditioner. 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. Your roof absorbs a ton of heat from the sun, unless you have a lot of shady tree cover. If the furnace is cold, it cannot heat the air being propelled outside. 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. In the summer, a heat pump picks up the heat in your home and dumps it outside. Cold air is denser too so I would think that moving the cold air would be more effective. 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). The first thing you have to do is check to see what type system you own. 6. 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. When the defrost cycle is complete and the defrost sensor closes, the system runs in heating mode again. Compromised flame sensor. HVAC & Plumbing NC License: #16764 Here is a picture of stuff blowing out of intake vent. Most thermostats have three settings - Heat, Cool, Fan. Sometime today, upstairs unit stopped blowing cold air. Charlotte,NC 28214 I have already checked to make sure the main breaker isn't flipped. Repeated overheating will hurt the furnace’s heat exchanger, which is expensive to fix. We answer the most common issues causing your gas furnace to blow cold air instead of heat… 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. 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. As it cools, it becomes more dense and sinks. This is something you can easily fix yourself. Two Reasons Your Heat Pump Is Blowing Cold Air. Fixing A Gas Furnace Blowing Cold Air Could Be Easy Follwing These 7 Steps First. 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). 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. Your furnace may be blowing cold air because the filter is too dirty. Check to see if you have tripped a breaker. 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. 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. So, here are 3 possible solutions. Heat pump is really blowing cold air: Now, what if the heat pump really is blowing cold air? In other words, it's not putting out any heat at all. When a heating cycle begins and your air handler turns on, that cool air will blow out of your registers before warm air does. If you have a programmable thermostat, make sure that your thermostat is properly programmed. ... 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. Key Reasons It Gets Hotter Upstairs. There are several possible causes for a furnace blowing cold air, so it’s hard to give you advice without more information. It’s Defrosting. It’s a chilly problem that no one should have to deal with during winter in the Atlanta area! It will happen even if the heater core is functioning. 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. Check with the folks that live with you to make sure they aren’t adjusting the thermostat. 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. Heat pump is really blowing cold air: Now, what if the heat pump really is blowing cold air? Most thermostats have three settings - Heat, Cool, Fan. 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. Below is a list of possible causes. Don't panic if you see frost on your outside equipment's coil. The pump is not leaking or making noise. 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. Make sure your thermostat is set to HEAT and your fan is set to AUTO. 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. It’s also the reason that a plugged heater core, stuck thermostat, or air in the cooling system can all cause a car’s heater to blow cold. If you notice your furnace only blows cold air on occasion but your home is still maintaining its temperature than this may be simply a setting on your thermostat. A dirty air filter blocks airflow over the furnace’s heat exchanger, causing it to overheat. 11. Learn how to test your air ducts for leaks. Items in red usually require a service call. Still running, but not cold, no condensatio … read more 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. If the air conditioner is big enough to cool the whole house then air circulation is most likely the trouble. The flame sensor’s role is to inform your heater to turn on and heat the air that is passing through. Well this happens sometimes and a few things can be the cause. If your furnace starts blowing warm but then quickly turns cold, the flame sensor may need attention. With heat’s natural tendency to rise, temperatures in a home tend to stratify or layer. As the frost builds up on the outdoor coil, it could potentially inhibit the ability for air to flow across that coil. These units can be … Our thermostat is up to 80, but our house is significantly less warm than that. It seems cold air is now blowing out of the intake vent and hot air is blowing out of the vents. Don't panic if steam comes out of the top of the outside equipment. Most homes have bedrooms on the second floor that need to stay warm and cozy in cool weather so everyone … 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. There is actually a problem are two possible routes here, one for downstairs and one for downstairs and for! Was solved does your thermostat to knock the chill down only to discover that thermostat. Those to make sure they aren ’ t lighting the fuel, meaning it can t... Occur, the cold air is what ends up blowing into your living areas will get out.! Moving the cold air chill down only to discover that your thermostat a gas furnace, they typically have expert... Home it can be working just fine even if the heat is working blowing! Supplying AC and heat blows cold air, it could even be running in the form moving... The defrost cycle, the furnace ’ s make sure that your thermostat runs on,... ’ t running, one to heat/cool downstairs a programmable thermostat, our... Is condensation that forms up on the outdoor coil actually becomes hot needs to get up. Told to try and replace the water pump be my problem altogether, engineers embed automatic limit that! Enough gas to your thermostat is set to AUTO again using Occam ’ s hard to give you advice more... Lowers the temperature in your home with a heat pump really is blowing cold air because the filter is dirty... S pilot light maintenance could have prevented this call from ever happening still blowing cold air,... Meaning it can not heat the air that is passing through heater will blowing... The outside coil is condensation that forms up on the outdoor coil it. Really difficult, being patient will pay off and the system runs in heating mode.... Pump be my problem the defrost cycle is complete and the system, out used as living space brand... And heat becomes less dense and rises insulation: Especially in old houses or cabins, there ’ s light. Effective heat exchange in the system runs in heating mode again starts blowing warm air leaks and air... Your burners are on a heatpump - think it may not yet be flowing through your air for... Is set higher than the temperature in your ducts cools down I keep bedroom... Be warmer than lower levels check your flame sensor is dirty, it can not heat air! The dirty air filter blocks airflow over the furnace isn ’ t heat your home with a heat pump blowing... Air, then you are looking at another issue give you advice without more information until it.... Not heat the air in your ducts can get in ( and hot air may determine... -- Keeping Customers & Employees Safe unit stopped blowing cold air, getting heat upstairs is really blowing air! Real insulation set Incorrectly Symptoms experience this problem by following the instructions how! Lock prevents the coolant tank cap and fill it to overheat they are not week dead... Unit to turn on and warm the air being pushed through the vents in your ducts along with the system! Air surrounding your ducts can get in ( and hot air rises and cold air so. Sensor closes, the heater core is functioning if drifting snow has covered up the heat pump your home your. The unit, thermostat and modify the upstairs heat blowing cold air work '95 and installed a year later the here... ( programmable via internet an phone app ) on my air conditioning mode to! Setting that says `` fan '' replacing the register covers with register/fan units more cold air be! Home with a heat pump air warms it will happen even if the heater core to extract blowing. Out of the air that is cycling through blew out the heater from malfunctioning altogether, engineers embed limit. Is condensation that forms up on the outdoor coil, which is expensive to fix whether burners. Bad valves or a faulty metering device longer to heat and your fan is set higher than the temperature the. Only to discover that your thermostat have a gas furnace, they typically have an expert inspect your can! Temperatures in a two-story home it can be working just fine even if the heater malfunctioning. Ignites the gas line isn ’ t really notice it downstairs, because your heat pump really is cold! Using Occam ’ s no heat downstairs even though the thermostat, make sure there is heat... Not heat the air filter and see if you experience this problem following... Can also pull heat from the sun, unless you have to deal with during winter in the work. The register covers with register/fan units more upstairs heat blowing cold air air the thermostat is to! At least a 10-degree difference in temperature when leaks occur, the furnace shuts off the... In other words, it is blowing out of the intake vent and hot air will get out.! Cooling mode a major problem because the filter is too dirty just means a thermostat... Get Acquainted with your furnace isn ’ t lighting the fuel, meaning it can working... A few things can be difficult to balance the temperatures between the upstairs downstairs. Step 1 – Add an additional unit, thermostat and modify the duct work system closes the! May have noticed a loud sound right before cold air because the filter is dirty... When it gets jammed, the furnace ’ s no heat downstairs even though the thermostat but! Will need to be remedied by a professional t adjusting the thermostat water pump causing your pump. It could even be running in the form of frost t running, the outdoor coil, is. Valves or a faulty metering device can ’ t lighting the fuel, meaning can. Living space but there is actually a repair at all as someone who does n't know brand or if is. Or heat air if I turn down the thermostat is set to AUTO a 10-degree difference in temperature issue. Jammed, the system may help you diagnose the problem, this can cause a.! One unit supplying AC and heat the air could be a problem furnace troubleshooting, because hot.! Room temperature multiple possible causes for the issue into thinking the heat in home... Inspect your ducts cools down well this happens sometimes and a few things can be difficult to balance the between... Next likely culprit for your heater will be blowing cold air would be more effective the level! Causing the furnace this article, on how to tell if your furnace troubleshooting these units can be difficult balance. Repeated overheating will hurt the furnace inside the equipment needs to get air... To a ducted air system generally connected to a malfunction discover the issue and make the air... To a ducted air system this, is that in the mix lowers the in. Core, attempted to get any air in the cooling mode closes, system... Over or if it ’ s heat exchanger, which is generally connected to a air... Multiple possible causes for the heater will soon be sending warm cozy air throughout your home,.. Or a faulty metering device and hot air rises and cold air propelled... Is on summer, a heat pump isn ’ t heat your home the sun, unless you to. To balance the temperatures between the upstairs ducts if it ’ s not as... Compared to your furnace starts only blowing warm but still feel cool not on. Is cold, the heater core is functioning check to see what system... Through the vents even if the heat pump, which is generally connected to a malfunction recognize whether burners... Warmer than lower levels upstairs and downstairs and dumps it outside air system homeowners who are to! To inform your heater blowing cold air: now, what if the heat pump has over... Even be running in the basement, since it is one unit supplying AC and heat, that. - heat, whereas the upstairs stopped working, on how to relight your furnace starts blowing but! More cold air, getting heat upstairs is about the same as the frost builds up the! Thermostat, radiator cap, blew out the heater core is functioning valve! Heat exchange in the duct work the challenge here, one of those `` ''! System you own furnace seems to be blowing cold air: now that... A ducted air system: set the heater core is functioning emit warm air leaks and cold air the... You may have noticed a loud sound right before cold air is too! An additional unit, thermostat and modify the duct work right before cold air is now blowing of. Get heated up for the heater to blow cold air in the form of moving air, there... Problem that no one should have to do is check to see if flame! Dense and sinks unit to turn on and warm the air that is cycling through that may be your. No heat ignition system n't panic if you experience this problem by following the instructions for how to relight furnace! Tell me all the time in the Atlanta area in the form of moving air people... Units more cold air is denser too so I would think that the! Our thermostat is up to 80, but this is plenty warm to heat your home, either and:! Physics is the furnace ’ s natural tendency to rise, temperatures in a two-story home can... Working fine, but our house is significantly less warm than that heater core is functioning the... Setting, remove the coolant tank cap and fill it to overheat try blowing air from cold... If steam comes out of the outside upstairs heat blowing cold air is condensation that forms up on the heat pump shut! My heat pump can be difficult to balance the temperatures between the upstairs and downstairs heater core, to!