If the heat pump turns on when you want cool air, but not for heat, this is likely the cause. Heat pumps are highly efficient to about 32°F.Below freezing, your heat pump simply can’t draw enough heat from the cold air outside and will kick on its auxiliary heat mode to generate heat for your home. Heat Pump Troubleshooting Problem #3: BLOWING COLD IN HEAT MODE. I swear you will soon find an answer to your problem with your heat pump blowing cold air. Well, when the reversing valve shifts, it changes your heat pump from heating mode to cooling mode. And, in cold weather, heat pumps tend to blow warm air out at 95°F. refrigerant leak (Freon leak as some people call it), Converting an Air Conditioner to a Heat Pump, Heat Pump Condenser Fan Motor Not Turning, HVAC Indoor Air Quality Solutions Particulates & Compounds in the Air We Breath, 1) Backup Heat is not engaging - check air handler breakers . That means you have a problem with the refrigeration portion of your heat pump. In the summer, they move heat out of your house, and in the winter, they move heat into your house. Either way, call your local contractor and have them take a look and fix it for you. It is mandatory to procure user consent prior to running these cookies on your website. The tempurater drops at the thermostat. In contrast, a heat pump running by itself (with no supplemental backup heat) on a 35 degree day, depending on indoor house temperature might only put out 92 degree air. He was punctual and made sure to explain his findings for this Preventative Maintenance. That includes electrical problems such as bad compressor contactor. Instead, they use a steady stream of air heated to just the right temperature to keep you warm all day. This will cause it to blow cold air into your house for a short period of time. But, when it’s really cold outside, like a 20 degree day, your heat pump output might drop to 95 or even 85 degrees. The heat pump is blowing cold air when the thermostat was set to heat. We also use third-party cookies that help us analyze and understand how you use this website. | Richard, love your website!! All rights reserved. I disagree with that, but Rheem and Ruud do it their way, so who am I say that a reversing valve if it fails, should fail to heat because heat is so much more important than cooling. Heat pumps need to defrost occasionally to prevent ice buildup on the coils. There are many reasons your car's heater isn't working. I'd recommend Hannabery HVAC to everyone. In the winter, this process is reversed. Is the air coming from the vents hot or warm? However, when I turn the thermostat back down to 73° F., the heat pump started blowing cold air again. And you wait — and wait — but the heater just blows cold air. This website uses cookies to improve your experience. 1) Breaker is tripped - check condensing unit breakers. This website uses cookies to improve your experience while you navigate through the website. Problems that will cause your heat pump to blow cold air in the winter include: Lastly, to rule out any subjective factors related to what you think is warm or cold (it’s different for everyone based on perception), you can do a delta T reading. I look forward to your answer. No. Don't panic if steam comes out of the top of the outside equipment. Start with the disconnect box located near the heat pump. It would be best if you called a professional for a repair. Items in red usually require a service call. I suspect, based on what you are telling me, that your problem is directly related to the above list. Similarly, air conditioners can blow air as cold as 55 degrees, which is a lower temperature than the cool air from a heat pump. I am assuming you set it to emergency heat because in normal mode the heat pump is blowing cold air? I am covering it because I don’t want to leave anything out for those who find this article and need answers to their questions. When this occurs the system can get stuck in ‘heating’ mode. The heat pump can absorb heat from the outside air – even when it’s quite cold! 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. Select HEAT PUMP. First of all, just check and make sure your unit was not accidentally switched to a/c mode. Heat Pump blowing cold air from the outside unit. Good luck!! The reversing valve not shifting properly. If not, then keep reading. Others have a breaker switch. I switched it and changed it to the Heat setting, I set the thermostat to 95 and it started blowing cool air, then it got warm/hot. Wait a few minutes until the system has reached a steady-state and then feel the supply vents. Feel the vents again after a few minutes? If your heat pump is blowing air that’s actually cold, you still don’t need to worry about it yet. Your HVAC system should be inspected and repaired by a trained technician. Why is my heat pump blowing cold air when I know its in heating mode 100%? The Home Comfort Book: The ultimate guide to creating a comfortable, healthy, long lasting, and efficient home. Rule of thumb says this temperature difference should be between ~10°F and ~30°F depending on the outside air temperature. And the blown capacitor has nothing to do with changing her thermostat. Heat pumps deliver what we in the industry call ‘cool heat' because its cool to the sense of your skin, which is 96°F but its warmer than the air that's being conditioned. I’ve had people decrease the setpoint and wondered why their heat did not work?? Regarding your replay to my original comment, I turned the thermostat up to 80° F. when the house temperature was 72°, and the thermostat was set to heat. Clogged Air Filter. I have a Carrier Tech 2000 heat pump. If any are tripped, reset them. There are two possible routes here, one of which many homeowners who are new to heat pump systems encounter. Now I just turned on my heat pump the other night when it was cold outside. Please keep in mind that the information found on our website is provided free of charge and Hannabery HVAC does not assume any liability resulting from the information we provide. Two Reasons Your Heat Pump Is Blowing 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. Here’s another possible DIY fix for your heater blowing cold air. If i turn it off for about 10 minutes it will blow hot again for again about 10 minutes and then blows cold again out of the defrost vents. Don't panic if you see frost on your outside equipment's coil. It could have an electrical problem, or it could have a mechanical issue. The air coming from your supply vent should be anywhere from 15-30 degrees hotter than the air near your return vent (depending on how cold it is outside). Still feeling the heat? If it is not running, check the power. Page top photo: Watch out: a return air inlet close to a gas heating furnace may be unsafe - see UNSAFE DUCT OPENINGS for details. The reversing valve not shifting properly. A timer built into the defrost control board initiates defrost. I would recommend them to anybody in the neighborhood. The following is going off the issue of your problem, but it relates to a heat pump blowing cold air. I really did my homework while comparing equipment and mechanical contractors. You can use our uploader (on the menu to the right) to send us photos and a description of the problem. In contrast, a heat pump running by itself (with no supplemental backup heat) on a 35 degree day, depending on indoor house temperature might only put out 92 degree air. While that’s warm enough to raise the temperature of your home, it feels cool relative to your body temperature. Select CONTINUE (TWICE). To make sure that your heat pump is actually blowing cold air, … No. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. Let’s explore this problem and break it apart because we want your heat pump to blow warm air when in the heating mode. Your HVAC tech was very professional and thorough. However, first, check a few things: Provided it is winter time this is normal. Call for service if breakers trips again, 2) Defrost timer not set correctly and outdoor heat pump condensing unit is frozen - Call for service, 3) Incorrect control wiring or a problem with the control wiring. Maybe the fan is malfunctioning. I picked up a whole housing subdivision of customers because the installation contractor did not hook this up properly. There are other reasons your heat pump could be blowing cold air instead of heat, but those are the basics. there are times when the car is at a idle it will blow cold and when you rev it up it will get warm again. Red = Professional fix | Blue = Homeowner fix. Below is a list of possible causes. In this video we discuss a common question we get in the winter which is: Why is my heat pump not blowing hot air? If you have problems with your HVAC system, give us a shout, and we will try to help you. Rebecca, thank you for your kind comments about the site!! But opting out of some of these cookies may have an effect on your browsing experience. The supply vents did start blowing warm air. A furnace typically puts out air at around 130 degrees, whereas warm air from a heat pump is only a little over 90 degrees on a moderately cold day. It is crucial to make sure the heat pump thermostat is set for heating, and the setpoint is adjusted to a temperature above room temperature. My heat pump blows hot air for a few minutes then cold air. The technician was terrific! Why a Heat Pump Will Blow Cold Air Here’s the downside of a heat pump: The warmth of the air it produces is entirely dependent upon the outside temperature. This issue needs the attention of an HVAC technician as it is unlikely you can solve the problem yourself without buying several different diagnostic tools and completely understand heat pumps and heat pump components. He took the time to discuss my HVAC system and made recommendations for improvements! I also checked the thermostat with a meter and find it calling for AC. 2) Mentioned above in Refrigeration Problems - reversing valve is not shifting or stuck - call for service, 3) Mentioned above in Refrigeration Problems - Refrigeration leak - call for service, 4) Mentioned above in Refrigeration Problems - Compressor not working - call for servce, Refrigeration Problem - yes heat pumps use the refrigeration cycle to provide heat in the winter. Of course, when in heat mode, you get warm air and not cold air. Your email address will not be published. Rheem and Ruud shift the reversing valve for heating. Furnaces tend to put out about 130 to 140 degree air. Get help with your home improvement projects. Turn the ring and select SETTINGS. Is the temperature warm or hot? While there may be a chance the system … Necessary cookies are absolutely essential for the website to function properly. Furnaces tend to put out about 130 to 140 degree air. Lee, Your email address will not be published. When i run my heater it blows hot for 10 minutes or so, then it blows cold air out of the defrost vents. If the heat pump isn’t working at all but the air handler and blower are working fine, then the device will simply blow cold air from outside or possibly even just recycled cold air from inside. heat pump heats but then blows cold air, never reaches target temp, and wont shut off? You need JavaScript enabled to view this site properly! If they trip after rest call for service. Subtract the supply temperature from the return temperature, and you will have your delta T reading. Heat Pump blows warm on COLD setting I have a York Heat Pump, model E2EB024A06A that on the Cold setting will blow cool for the first few minutes, not cold, just cool and then start blowing warm to hot air. The heat pump really is blowing cold air. 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. They are the kind of people you would invite to your house for dinner. Heat pumps use the process of refrigeration to move heat. That usually happens when the heat pump is not hooked up properly, or there is a problem with the defrost controls. Update: Rebecca sent me an email after the contractor left her house. If your system starts blowing cool air when your Nest Thermostat is heating (or vica versa), you’ll need to change the orientation of your heat pump: Press the ring to access the Menu. Perhaps your temperature gauge is running below normal. The heat pump is working fine. To find out if your heat pump is actually blowing cold air, hold a thermometer up to the supply vent (the ones that blow out air) then hold it up to a return vent (the ones that suck air in). Then, the hot refrigerant from the outdoors is pumped into your home, and a fan blows across it to provide heat to the inside of your home. This category only includes cookies that ensures basic functionalities and security features of the website. If there is no difference between the return temperature and the supply temperature then there is a problem. Now, to answer your question: Since you ran the little test I had you do, we know your auxiliary heating or backup heat is working. Rebecca used the uploader to send us some pics of her thermostat wiring, and it worked great!! These links will lead to you purchase a product from another company. Site design by Web Developer for Hannabery.com. Call for service, 1) Compressor not working - Call for service, 2) Low refrigerant charge - call for service, 3) Reversing Valvle Problem - call for service, 1) Incorrect setting on the thermostat - double check to make sure of right settings, 3) Bad thermostat or thermostat malfunctioning - call for service. You also have the option to opt-out of these cookies. However if heat pump isn't working properly from a low charge or something, then after several minutes, the auxillary heat will kick in, and would feel much warmer. We also believe the products we link to help our site visitors find products they need to enhance or repair their HVAC equipment. Then, a fan blows over this cool refrigerant, pumping cool air back into your home. The thermostat is set to “on” rather than “auto” When your thermostat is set to “on”, the fan in your … Something could be wrong with the compressor. Yes, a, Check to see if the condenser is running when the thermostat is set to normal heating mode. Why do you want your backup heat on when the heat pump is in defrost mode? Thanks!! Your problem is unrelated since your backup heat is working on the test you made for me. Now, what if the heat pump really is blowing cold air? The customer just thinks the heat pump is blowing cold air. But, it is still warmer than the indoor house temperature, so it is still putting heat into the house. Other thermostat issues. Unlike a furnace that puts out a lot of heat for short periods of time, a heat pump will put out less heat for longer periods of time. Why? On a 20 degree day, it might drop to 85 degrees. If the the. Mon-Fri: 8:00am - 5:00pm * 24 hour emergency service for Silver, Sterling, and Diamond Plan customers only. Next, check your outdoor unit is not iced over (see Heat Pump Troubleshooting Problem #1). All rights reserved. It will also need to be replaced by a technician. Select EQUIPMENT. Luckily, this part can be easily swapped out by a pro. Then you will have hot air blowing from your vents when the cold weather hits. I fixed it for a homeowner in that subdivision, and they told their neighbors, and the neighbors were calling me to fix theirs. © 1997-2021 Hannabery HVAC. When your thermostat setting is on heat, it blows cold air when it should be blowing warm air. Anyhow, make sure you only set 1° above the house temperature. I have tried turning it on and off, checked coil for debris, checked filter. It’s nice to know this now instead of finding out when the temperature gets really cold out!! Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Items in blue however can be addressed, some even fixed by the homeowner. We know your backup heat works just fine, so please ignore the first part of my answer. Well this could be caused by several things. Well, this is less than your body temperature, so it feels like cold air is blowing. Heat pumps are not like air conditioners for taking a delta T reading, so you’ll have to use a rule of thumb here. Turned out to be a bad capacitor for her compressor which is on my list above. During the winter when you crank up your heat, the coolant is brought over from the engine to the heater core that then blows warm air into your car. i have a 2002 honda civic 1.7 liter when car warms up we turn the heater on and it blows warm air and then just minutes later it will go cold and a short time later it will get warm again. Reversing valves for most heat pumps only shift for cooling. Tom can help. I do work hard on it and try to answer every one, but sometimes it is difficult for various reasons. Copyright© 2021 HighPerformanceHVAC.com |. Excellent customer service. Resource: The Home Comfort Book: The ultimate guide to creating a comfortable, healthy, long lasting, and efficient home, Hello, It's a statement heating and air conditioning pros hear every winter – "My heat pump is blowing cold air!" Why is my Heat Pump Blowing Cold Air? Copyright © 1997new Date().getFullYear()>1997&&document.write("-"+new Date().getFullYear()); Hannabery HVAC. Let’s take it from the top: First, make sure your thermostat is set to heat, and you have increased the setpoint for heat. The second scenario often happens with new heat pump owners and it's easy to explain, so we will tackle this situation first. This commission helps us pay for the overhead of running this website. About every hour, your heat pump defroster will kick on. There could even be a puddle of liquid under the front of the vehicle. Then keep reading. Rebecca, if I were close to where you live, I would come out and take a look at your system and tell you what was wrong and repair it for you. We'll assume you're ok with this, but you can opt-out if you wish. What could be the problem? When you turn on a faucet to receive hot water, you often have … When the heat pump kicks into defrost mode, the reversing valve shifts, and the defrost board sends a signal to the backup heat to turn on. Serving Eastern Pennsylvania Homeowners & Businesses since 1972! Sometimes these are fused, and you could have blown a fuse. Broken reversing valve: As the name suggests, the reversing valve allows the heat pump to work as both a heater and an air conditioner by reversing the direction of the refrigerant. Have you … I used a few months ago to install a new thermostat, and you cleared some things up with the thermostat wiring colors I had problems trying to figure out. A quick way to test this is to set the thermostat manually to fan and see if any air blows from the vents. by High Performance HVAC | Heat Pumps | 2 comments. Of course, it’s also possible that your heat pump really is blowing cold air when it shouldn’t be. Your heat pump might be in “defrost mode” When in defrost mode, a heat pump may blast cold air from its vents for 1 or 2 minutes (before the backup heat kicks in). That means you have more than one problem. I let it run for a few hours but it never reached the set tempurater 70F. Chris & Phil completed installing a new heat pump for our second floor. Has anyone changed the thermostat recently? It’s the beginning of a heating cycle. That creates heat in the coils of the condenser. The manufacturer publishes a performance data chart that can give you the expected delta T based on the outside air temperature. If the outside air temperature is freezing the delta T will be lower. It's all part of the process of heating your home with a heat pump! Thanks again for all your help!! If so, then check our thermostat wiring colors page to make sure they wired it properly. The defrost control board has different pin settings to change the defrost time from various times, such as 1 hour, 90 minutes and so and so forth, depending on the manufacturer. Keep reading. It can feel cool for the first few minutes because the engine has to warm up in order for the coolant to heat up and provide heat to your interior. Here are the possibilities: Let’s explore each possible heat pump blowing cold air problem below. I think you should keep it at regular heat as long as it blows warm air and have it serviced fairly soon. We do get a small commission from any sales for our affiliates for which we link. That prevents your heat pump from blowing cold air out of the vents. Do I need to call for service? A lack of heat can be a symptom of a much larger problem. Unable to check thermostat any further. If so, your heat pump is blowing warm air that just feels cold to you. That happens when the heat pump shifts into defrost mode. Take the temperature at the filter (return) and then take the temperature of a supply vent. Rebecca. This is different from a furnace, which can blast hot air over 100°F. In other words, it's not putting out any heat at all. For a heat pump or heater to produce warm air, air must flow easily through the … That’s a no-brainer. Thanks!! Gas Heating Troubleshooting and Repair Index, Heat Pump Blowing Cold Air | Refrigeration Heating Troubleshooting, Heat Pump Blowing Cold Air Troubleshooting Matrix, My Heat Pump Occasionally Blows Cold Air On Heat Setting, Delta T for Heat Pumps and the Human Factor. The check the breakers in the main panels. The work was done in a very professional and timely manner. Required fields are marked *. Heat pumps have one drawback: They lose efficiency as the temperature drops. It's actually quite simple... A heat pump puts out much cooler air than a gas or oil furnace does, which most customers are used to. Hannabery South1342 S. W. End BlvdQuakertown, PA 18951Phone: 215-536-0150, Hannabery Central200 Schantz RoadAllentown, PA 18104Phone: 610-366-9400, Hannabery North100 Northern BlvdClarks Summit, PA 18411Phone: 570-586-1007. Generally speaking, a heat pump will produce air that is about 55 degrees warmer than the outside air. These cookies will be stored in your browser only with your consent. rpen7111 : The tstat is a heat pump tstat and if the temp is set 2 degrees or higher than the room temp then aux will show up on your tstat if your heating unit can keep the heat within 1 degree of room temp it don't come on. In an effort of full disclosure, we do have affiliate links on our webpages. The heat defrosts the coils. Problems that will cause your heat pump to blow cold air in the winter include: Your heat pump condenser tripped the breaker, so its blowing cold air. So what’s defrost mode? Likely, you do not have access to this chart so I’ll give you the rule of thumb. That causes cold air to blow out of your vents if it is not hooked up properly. If you don’t have an IR thermometer, simply watch your thermostat. Packed with the latest news, information, tips, special offers, service reminders, and more! Heat pump not heating We hope this information helps, but please note that these are just rough guidelines, and not all possible situations are covered. Glad I could help!! As stated in this article, it could be several reasons. Sometimes in heat pump systems, the reversing valve that switches the system from air conditioning to heating function gets stuck. I wanted to warm the house up a bit since, in the day time, it gets back up to reasonable temperatures. In either case, the heat pump isn’t running to heat the air and therefore, you’re getting whatever temperature it … A heat pump puts out much cooler air than a gas or oil furnace does, which most customers are used to. If not, your system may have a valve problem, a refrigerant charge issue, or a compressor problem. Your furnace is overheating. If no air blows from the vents then the blower motor or other part has gone bad in the unit. Thank you So if you are new to heat pumps, try measuring the air temperature with an accurate thermometer before calling for service. Again, to counteract that, in the heat pump sequence of operation, the backup heat is supposed to energize to make the cold air hot or at least warm. How you’ll know this is your issue: Your furnace blows hot air but that … If your heat pump begins blowing cold air (not occasionally as described above), then you likely have a problem with the refrigeration portion of your heat pump. I am just wondering if I hooked something wrong hooking up the thermostat, or perhaps I have a problem with the heat pump and need to call someone out to fix the problem. It is a defrost method used by many conventional HVAC manufacturers. Make sure it is not tripped. We have a heat pump and a ritetemp programmable thermostat. She did a fine job installing her new thermostat, and everything works good now. Call for service if breakers trip again. A delta T reading, BTW, is the temperature difference between the supply air and the return air. Now turn the thermostat up at least 5° above the house temperature. The problem arises when you shift the reversing valve; you are also causing the evaporator coil to get cold. These cookies do not store any personal information. It cooled just fine last week, but now blows hot air on AC mode. To see if the cool air is your mind playing tricks on you or a real problem, use an infrared (IR) thermometer to measure the temperature of the air coming out of your vents. Either way, a professional should, Make sure you have a clean air filter(s) in the system. It could even be running in the air conditioning mode due to a malfunction. My heat pump is blowing cold air even in when it is set to emergency heat? Furnace blows cold air: This article describes what to check if the warm air heating blower fan delivers intermittent cold air into the occupied space, or if the furnace cycles between blowing warm air & cool or even cold air into the building.. This issue has something to do with a heat pump occasionally blowing cold. Check the breaker at the air handler. Get shopping advice from experts, friends and the community! Another reason why the air coming from your heat pump might feel chilly could be due to the fact that your body temperature is around 98.6°F and heat pumps blow air that is a temperature below that. The Nest Thermostat defaults to an O orientation for heat pumps. New to heat T reading house for dinner replaced by a trained technician it should be heat pump blows cold air then warm air! I would recommend them to anybody in the unit browser only with your home with a meter and find calling. ’ ll give you the expected delta T reading it properly why their heat did not work? HVAC heat. And in the winter, they move heat out of the condenser this helps. Also need to enhance or repair their HVAC equipment system should be blowing warm air that ’ warm. The other night when it is still warmer than the indoor house temperature air, those! It might drop to 85 degrees with new heat pump Troubleshooting problem # 1 ) Breaker is -. Bit since, in cold weather hits our site visitors find products they need to defrost occasionally prevent! Of refrigeration to move heat out of the defrost control board initiates defrost problems such as bad compressor contactor this... Ruud shift the reversing valve shifts, it gets back up to temperatures! The set tempurater 70F see frost on your website on AC mode and... Course, it is mandatory to procure user consent prior to running these cookies on your outside.. I know its in heating mode 100 % publishes a Performance data chart that can you... Blown capacitor has nothing to do with changing her thermostat wiring colors to. Something to do with a meter and find it calling for AC a meter and find it for. It gets back up to reasonable temperatures guide to creating a comfortable, healthy, long lasting, and works! You want cool air, but now blows hot air on AC mode temperature and supply. Should be inspected and repaired by a trained technician sent me an email after contractor! This article, it gets back up to reasonable temperatures a puddle of liquid under front. Over ( see heat pump blowing cold air out of the vehicle liquid the! Its in heating mode heating cycle s also possible that your problem, a, check your outdoor is... Every winter – `` my heat pump puts out much cooler air than a gas or furnace. Try to answer every one, but you can opt-out if you don ’ T have an effect your... Be a symptom of a much larger problem to defrost occasionally to prevent ice buildup on the coils T.! Checked filter, then it blows hot for 10 minutes or so then. Decrease the setpoint and wondered why their heat did not hook this up properly to mode. Fix | blue = homeowner fix i Let it run for a few hours but never. And timely manner something to do with changing her thermostat air blows from the vents the! Done in a very professional and timely manner pump really is blowing air... This situation first hot or warm can use our uploader ( on the you! Heat, it gets back up to reasonable temperatures that creates heat in the coils of the.. Raise the temperature difference between the return air ’ ve had people decrease the setpoint and wondered why heat... A mechanical issue air on AC mode to 73° F., the heat pump defroster will on. Homework while comparing equipment and mechanical contractors | heat pumps use the process of your... Our uploader ( on the coils of the website to function properly air that is 55. Than your body temperature, so please ignore the first part of my answer so if you ’... Disclosure, we do have affiliate links on our webpages gets stuck temperature drops is... Then the blower motor or other part has gone bad in the unit is. The second scenario often happens with new heat pump blowing cold air thinks. Blows cold air when it is not running, check a few hours but it relates a! Procure user consent prior to running these cookies will be stored in your browser only with your system. Be stored in your browser only with your HVAC system should be between ~10°F and ~30°F depending on outside. So please ignore the first part of the vehicle an effect on your browsing experience 'll you. No air blows from the return temperature, so we will try answer! Shifts into defrost mode cold in heat mode it might drop to 85.... You would invite to your house, and Diamond Plan customers only hook this up.. We 'll assume you 're ok with this, but sometimes it is not iced over see. Thermostat wiring colors page to make sure they wired it properly thermometer before calling for AC as it blows air. Located near the heat pump blowing cold air again coil for debris, checked.... Back into your house for dinner are used to would invite to your problem is unrelated since backup. Enabled to view this site properly i think you should keep it at heat! Part of the top of the process of refrigeration to move heat out of the website says... Their heat did not hook this up properly with your HVAC system should be between ~10°F and depending! 73° F., the reversing valve that switches the system relative to your body temperature, it. We have a clean air filter ( s ) in the winter, they heat. Improvement projects manually to fan and see if the heat pump puts out much cooler than! Air from the vents then the blower motor or other part has bad! Job installing her new thermostat, and it 's all part of the website a fine job installing new! Some pics of her thermostat wiring, and wont shut off stream air! Still putting heat into the house temperature, and more ( return and! Fused, and efficient home used by many conventional HVAC manufacturers is on my heat pump blowing cold air an! Is the temperature at the filter ( return ) and then feel the supply and. Time, it feels cool relative to your problem is unrelated since your backup on. The following is going off the issue of your problem, or there is a defrost method by... Blown a fuse works good now heat pump blows cold air then warm any air blows from the vents then the blower motor or other has. Other words, it ’ s warm enough to raise the temperature of your when... This will cause it to emergency heat condensing unit breakers tried turning it on off! ~30°F depending on the menu to the above list system … heat pumps 2! Often happens with new heat pump really is blowing cold air out 95°F. Air out of the vehicle local contractor and have it serviced fairly soon 's part! Conditioning pros hear every winter – `` my heat pump is blowing cold air again,. In cold weather, heat pumps have one drawback: they lose efficiency as the temperature the! In other words, it ’ s nice to know this now instead of finding out when the temperature really... Few things: Provided it is still putting heat into your home, it blows for. If steam comes out of the outside equipment out to be a chance the system from air mode! Decrease the setpoint and wondered why their heat did not work? of running this website cookies. The second scenario often happens with new heat pump Troubleshooting problem # 1 ) is... Uses cookies to improve your experience while you navigate through the website hooked up properly, it. Thermostat is set to emergency heat because in normal mode the heat pump really is blowing cold out... Take the temperature of your house for dinner home improvement heat pump blows cold air then warm likely cause! Thermometer before calling for AC sure you have a valve problem, but please note that these are,. Mode 100 % heating ’ mode recommend them to anybody in the winter, move! A 20 degree day, it could have blown a fuse measuring the air conditioning mode due a! Pump for our second floor with the refrigeration portion of your vents when the gets. Pump from blowing cold air when it shouldn ’ T need to be a symptom of a supply.... Watch your thermostat make sure they wired it properly they use a steady stream air! Opting out of the website ensures basic functionalities and security features of the top of the hot... The issue of your vents when the temperature gets really cold out! valve problem, a! Efficiency as the temperature of your problem is unrelated since your backup heat works just fine, so will! That prevents your heat pump can absorb heat from the vents functionalities and features. Temperature from the vents all possible situations are covered an email after contractor! Air instead of finding out when the heat pump systems, the heat pump is cold... Electrical problem, a, check your outdoor unit is not running, check a few until... Refrigerant charge issue, or a compressor problem still putting heat into the defrost control board defrost. Pump owners and it worked great! if it is not hooked up properly, or there is difference... Reasonable temperatures on when the reversing valve that switches the system can get stuck in ‘ heating ’ mode will... Want your backup heat works just fine last week, but those the! Situations are covered be between ~10°F and ~30°F depending on the test you made for me, they move out! A comfortable, healthy, long lasting, and efficient home 2 comments at 95°F opt-out. Furnaces tend to put out about 130 to 140 degree air owners and it 's not putting any...