Of course, when in heat mode, you get warm air and not cold air. is changing the fan from “auto” to “on”, which causes the fan to blow air when the system isn’t running. The #1 question asked by NEW MEMBERS. I’ve just found 10,000 ways that won’t work.” - Thomas Edison. Turned it on to cool, and now the system seems to be reversed? This happened last night and this morning. Nest Learning Thermostat. It may seem simple, but you would be surprised at how many people (including one of our own team members) have made this simple mistake. Here are five reasons your heat pump might be blowing hot air while on the Cool setting: 1. 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. I then reset it and added the second white wire (s1 wire) into the o/b wire slot to see if that changes anything. Take the new thermostat out of the packaging and connect them to the wires coming out of the wall. Turn the unit off, order a new filter or clean it, then reinstall it back to its original position. The instructions depend on which thermostat you have. Old tstat had Y, RH (with jumper to RC), W, and G wires. I connected them as follows: Old New W = W Y = Y G = G RH = R (with jumper to RC) The unit outside turns on and compressor is running when thermostat set to cool. They heat up air using a flame or heating coil and then a fan pushes that air through your home. Then select HVAC. Thermostat set to cool, but outside the freon pipes are very hot to touch and wind coming out of top is cool. But, the air coming out of the vents can feel cold for a couple reasons: Gas furnaces produce air that is 130-140°F range. This bitter, unusual cold … the air inside your home will be warmer if the thermostat is at a higher set point. And what about the filters? I was having a problem where my thermostat / AC was blowing out hot air when I wanted it to be Cooling. Once it’s switched, try your AC again. This makes the engine warm up more quickly and reduces emissions. Back on … I have a Honeywell thermostat that keeps acting weird, I have the set temperature at 78 for the whole day. The trouble with the thermostat or heater core could also be the reason. I installed a new thermostat in our new house and like i said, it's blowing air, but the air is not cold. If your car is only blowing cold air, even when the engine is warm, there are a few potential causes. If your furnace keeps blowing cold air, you may notice that your air filter is too dirty. Might there be a chance someone bumped the thermostat in the wrong direction? Our 20th year anniversary is May 21, 2020. You’re busy – and so is your family. Thermostat set to HEAT or fan set to ON Yes, we’re serious. Dirty air filter. When I sit at red lights the truck blows cool air . 1434I just installed a Honeywell RTH9580 wifi thermostat and cannot get it to blow cold. All wiring is seemingly correct. A defective thermostat that is stuck in the open position will delay warm-up and hinder heat production. It will also need to be replaced by a technician. Furnace Not Blowing Hot Air? Press question mark to learn the rest of the keyboard shortcuts. Gain access to our free AOP (Ask a Professional) Section to get real answers for your questions. Components – Coils, Heaters, Motors, etc. I followed the instructions to the tea with the exception of turning the power to the unit off. 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Solution: Set the heater to its maximum setting, remove the … … The Furnace Is Blowing Cold Air. If the heat pump turns on when you want cool air, but not for heat, this is likely the cause. My A/c then only blew cold air. Have you … Any insight, advice, help, etc. Contractor's Assistant: Did you double-check the thermostat's settings? The fan limit switch measures the air temperature inside the furnace or hot air supply plenum and controls blower motor operation. Then reset it back in place. So thank you guys of the R/HVAC sub and even beyond for your hard work. I checked the system monitor data. Three D-I-Y Fixes for A/C Blowing Hot Air . I'm attempting to go from this currently working honeywell thermostat to this one, Honeywell RTH9585WF1004 which, when wired up (following the instructions) blows hot (well, warm really) air when set to cool. Thermostat Issues. Air conditioner blowing hot air after replacing the thermostat. Sometimes people bump into the thermostat and change the setting from “cool” to … Cookies help us deliver our Services. So, what am I missing here? 2. Just replaced thermostat and now york air conditioner blowing hot air [ 1 Answers ] Just changed broken honeywell thermostat with same model. My old thermostat only had 4 wires, White, Green, red and Yellow. I have all the cable going to the correct color, no wire is touching another wire. You can have your ecobee Smart Thermostat switch from heat to cool or from cool to heat automatically without having to do it manually. A place for homeowners, business owners or anyone with a general question about their HVAC system. 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. Dirty Filters. is greatly appreciated. Sometimes homeowners forget to turn the thermostat from “warm” to “cool” in the summer. Dirty air filter. Be sure you’ve set your thermostat to Auto or On, as well as Cool. As it stands I have 6 wires connected to the old/working thermostat. The Fan setting will not cool your house; it simply circulates warm air. Well this happens sometimes and a few things can be the cause. This is why you hear the term “forced-air” associated with heaters. When you wired the new one, it doesn't work properly? First, check to make sure the thermostat is set correctly. The thermostat is so important to any heating source in a home that has central air, whether it’s a furnace or an HVAC system. I took the new one off and put the old one back before I thought about coming here and asking for help. It always helps when you’re doing any control wiring. In many cases, this may be something easy to fix by yourself. Here are five reasons your heat pump might be blowing hot air while on the Cool setting: 1. If you just turned on the heat, hot air may not yet be flowing through your air ducts. And what about the filters? New HVAC Thermostat Blowing Hot instead of cold. Here are some steps you should go through if your furnace is not blowing hot air. The heater is not blowing hot air either. We installed a new theromostat. So the old thermostat was working properly correct? Explanation: If your furnace is overheating, that means your heat exchanger is getting too hot. Not sure if that has any effect on the hot air. I'm not sure if it blows cool air when set to heat as the temperature here (currently 72 outdoors) doesn't allow me to get it to try and heat. I had a Honeywell thermostat and it stopped working so I replaced it with the same model Honeywell thermostat (it's an upgraded version- more current, but the same model essentially). This is a picture of the air handler's model number / tag: Air handler, This is a picture of the compressor/condenser unit: Here. I got a new Sensi smart thermostat for Christmas this year and installed it yesterday, however when I turned the power back on and set the thermostat to cool it started blowing hot air. But, when it’s really cold outside, like a 20 degree day, your heat pump output might drop to 95 or even 85 degrees. Have you cranked up your thermostat to knock the chill down only to discover that your heater is blowing out cold air. That means that the only air that can blow over the evaporator coils is the air inside the unit itself. At times, the air would keep running but would blow warm air..it keeps overriding the set temperatures. So, I think I had a bad thermostat. Might there be a chance someone bumped the thermostat in the wrong direction? Post photos, respond to polls and access other special features. The Pilot Light is Out. It’s not uncommon that an improperly set thermostat is to blame for your air conditioner blowing hot air. The Reasons for Car Heater Blowing Cold Air. A more common mistake (and the one he made!) For a heat pump or heater to produce warm air, air must flow easily through the … Installed a new thermostat and now it is blowing hot air on the air conditioning setting, yes, yes, did I mess up the - Answered by a verified HVAC Technician. When a car heater not blowing hot air, the problem is likely to be with the cooling system. Make sure that you have your thermostat set to “Cool” instead of … If the thermostat is set to ON, the blower will run continuously throughout the day and night. At times, the air would keep running but would blow warm air..it keeps overriding the set temperatures. Here it is: The new … I don't have a pic of the new one wired in, just the back of it w/out the wires--but I matched the letters, even labeled each wire as I removed it from the old thermostat. The new one produced no cold air when wired the way it is in the picture, it was making the house hotter. All wiring is seemingly correct. Your furnace blows hot air but that air quickly turns cold then the furnace shuts off altogether. Common causes for AC to blow hot air Thermostat is improperly set. If your AC is blowing hot air, the thermostat may have been accidentally set to “heat.” If this is the case, it’s easy to fix on your own. “I haven’t failed. When I get home I can post a picture of it. I have a Honeywell thermostat that keeps acting weird, I have the set temperature at 78 for the whole day. Thermostat: Your thermostat is a valve in your cooling system that stays closed when the engine is cold, creating a shorter coolant circulation path. When I first installed it, it was only blowing hot air. If your system starts to blow cool air when your Nest thermostat is in Heat mode (or if it blows warm air when its in Cool mode), change the settings for orientation of your heat pump. Take pictures of the terminal strip on the stat next time. I reset it again and rewired it to only have one white wire installed into the o/b slot. Pilot … We’re not sure … I followed the instructions to the tee, took pictures and went back an rechecked my work. 5 Potential Reasons Behind the Issue 1. There are many potential reason that your system may be blowing hot air. Also, when turning the Cool on, hot air is now coming out instead of cool. Incorrect Thermostat Settings. Yeah it's here but I think, after reading and reading I know where I may have fucked up---I chose "forced air" instead of heat pump during the setup portion of installing the thermostat. Incorrect Thermostat Setting Photo by Wesley Tingey on Unsplash. Honeywell RTH6360 but it is blowing hot air even though the thermostat is set on cool. Had the thermostat replaced on my 2005 1.9TDI (manual) a week ago, then 3 days ago, having driven 6+ hours, the aircon stopped blowing out hot air… Installed new thermostat, now A/C is blowing hot air! The room temp came up from 65 overnight and hit 69, but slowly drifted down to 67. Incorrect Thermostat Settings. The thermostat (ecobee 3 lite) is set to 69, the room is reading 67, and the fans seem to be blowing cool air. 1 runs fine the other 2 just blow heat no AC. It is blowing hot air on the "cool" setting. The air could be warm but still feel cool. Check this easy fix first, ensuring the thermostat is set to cool, and the temperature optimally adjusted. When your thermostat setting is on heat, it blows cold air when it should be blowing warm air. We’ve met some people who think this whole air filter thing is a scam. Check the Thermostat . Before calling a technician, the first thing you should do is take note of your thermostat settings. If you have an oil-fired furnace, you may be out of fuel. This may soundquite ridiculous, but it is easy to miss. There are several things that can be wrong with the thermostat that may be causing it to blow cool air instead of warm air. Simply flip the thermostat setting back to “cool” and see if the air conditioner begins to blow cool air … Your Fan Is On. EDIT: Solved. However, the thermostat was showing "COOL" in the OFF state. Honeywell RTH6360 but it is blowing hot air even though the thermostat is set on cool. 15. Do you have a picture of the newly wired thermostat? I have the jumper connection R to Rc. Dirty air … My car has 179000 miles. new honeywell stat blowing hot for ac I just installed a Honeywell rth2310b programmable thermostat and now it is blowing hot air instead of cold in the cool mode. 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. Improper thermostat setting. Nothing can be more frustrating than having a furnace that is not able to blow hot air in the cold winter season. But, pinpointing the exact reason … Improper thermostat setting. I have a theory on why it wasn't working properly, though, as I chose "forced air" instead of "heat pump" during the setup portion of the thermostat install. I then hooked up the wires as they were in the new model's guide, and it still blew hot air when set to a/c. That’s not … That’s not … After replacing the thermostat, I'm not getting cool air, it's only blowing warm air, I guess from outside, even Any idea to fix it or should I keep using Honeywell. With the new Nest Thermostat installed, my A/C is only blowing cold air. Select the thermostat you have: Nest Thermostat . Update amazon now offers a free smart home consultation After two not helpful calls with Honeywell, I have the unit set on Cooling and it is blowing hot air. When a car overheats, it is an indication that there is a problem with the engine cooling system. Follow the activation and programming instructions that came with the new thermostat. The ventilation fans blow air over the matrix and into the car. It may sound obvious, but the first thing you should check is the thermostat. Won't be able to test it out until tomorrow, though. The first place to start when troubleshooting this issue is to call your gas company to see if there is a known issue impacting the supply of gas to your area. Wrong Thermostat Setting. It happens more often than you’d think (usually from an accidental bump or finger nudge). Yes... we are 20 years old. Troubleshooting Hot Air from Your Air Conditioner. I've tried troubleshooting. 1. New comments cannot be posted and votes cannot be cast. Press Menu on the main screen. Today, I rechecked the wiring and installed it again. When I first installed it, it was only blowing hot air. Q: The engine is overheating. I'm attempting to go from this currently working honeywell thermostat to this one, Honeywell RTH9585WF1004 which, when wired up (following the instructions) blows hot (well, warm really) air when set to cool. 78 would go up to 85 the house would get so hot. Heat Pumps and Electric Home Heating - Honeywell RTH9580WF1005 Thermostat Blowing Hot Air - So let me bring you up to speed fast 1) Wired per the wiring of my old thermostat … Ask Our Pros-Owner Assistance - NO DIY advice will be given. Details. To Set Thermostat to Auto Mode. EMPTY OIL TANK. Q: My truck started taking long to heat up so I had the thermostat changed and now it still only blows warm air after running for at least 30 minutes. Installed new thermostat, now A/C is blowing hot air! Press J to jump to the feed. Contact Support at 1-855-733-5465 to find a pro-installer in your area. That air is already extra hot from the compressor and condenser, so it’s often too warm to cool down when it passes over the evaporator coils. Here are some troubleshooting tips that could save you some money and time. I then reset it and added the second white wire (s1 wire) into the o/b wire slot to see if that changes anything. How does a thermostat work? I hooked up all the wires as they were in the old thermostat, and it blew hot air when set to a/c. Sometimes people bump into the thermostat and change the setting from “cool” to “heat”. Hi Guys, I've just updated all of the thermostats in my new office build. The thermostat should open up as your engine reaches operating temperature. Hello and thanks for reading / giving any advice that you're able to offer. Before calling a technician, the first thing you should do is take note of your thermostat settings. new honeywell stat blowing hot for ac I just installed a Honeywell rth2310b programmable thermostat and now it is blowing hot air instead of cold in the cool mode. A new thermostat may be to blame if your air conditioner is blowing hot air. When the system is not calling for cooling, the air that is circulated can feel warm coming out of the registers. The most common issues are: Stuck thermostat. How you’ll know this is your issue: Your furnace blows hot air but that … With the help of valves. I've tried troubleshooting. Here ar 7 resons you may be getting a blast of chilly air and how you can warm up your house as soon as possible. My car has an automatic transmission. If your return vents are blocked or closed, new air can’t get into the air conditioning unit. I followed the instructions to the tea with the exception of turning the power to the unit off. Clogged Air Filter. If your electric furnace is not blowing hot air, there might be some issues with the thermostat. Check to see if your thermostat is set to ON or AUTO. We use cookies to give you the best possible experience on our website. You’re busy – and so is your family. Thermostat is definitely set on cool, says “cool on” and the fan button is showing. If so, your blower may … Set the HVAC to Auto. Hi all, I think our thermostat/furnace isn't working properly. Installed a new thermostat and now it is blowing hot air on the air conditioning setting, yes, yes, did I mess up the - Answered by a verified HVAC Technician We use cookies to give you the best possible experience on our website. What temperature do you feel blowing from the vent? WARM/HOT – This means your reversing valve may not be configured or wired properly. If your AC is blowing hot air, the thermostat may have been accidentally set to “heat.” If this is the case, it’s easy to fix on your own. So 85-92°F feels cold to new … I reinstalled the old thermostat and the cool setting worked again. Here's how it was set up when it was working: Here's what Sensi said to do on the app as I installed it: It's installed exactly like the image. Probably just needs a new thermostat. My A/c then only blew cold air. So, I bought a new one (Honeywell Lyric T5). Be sure you’ve set your thermostat to Auto or On, as well as Cool. Contractor's Assistant: Did you double-check the thermostat's settings? 78 would go up to 85 the house would get so hot. Here’s another possible DIY fix for your heater blowing cold air. Again, not sure what the brown/black wires are for (they were never connected to anything in the old thermostat). If it was turned to heat it wouldn't produce heat, just circulated air (with fan set to ON). The furnace blowing cold air, or there is no heat in the house. I connected all 6 wires to their corresponding points on the new honeywell thermostat. It may sound obvious, but the first thing you should check is the thermostat. 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. Accessories – Pumps, Cooling Towers, Evap Condensers, etc, Components – Valves, Motors, Condensers, Evaporators, etc, Duct Systems Design, Installation & Practice, Piping Systems Design, Installation & Practice, Control System Design, Installation & Practice, Welcome from the Editor & Electrical Forum Rules, Pro's Forum: National Electrical Code (NEC), Pro's Forum: Calculations & Electrical Theory, Pro's Forum: Electrical Business & Marketing. ” associated with Heaters showing `` cool '' in the off state or set! Heating is n't working properly red and Yellow we use cookies to give you the best possible experience our. And reduces emissions explanation: if your electric furnace is overheating I had bad. Even beyond for your questions circulating properly and can cut your heat exchanger is getting too hot is out )! Fan limit switch measures the air would keep running but would blow air! Turn the unit off took the new Nest thermostat installed, my A/C is blowing hot.. Was sitting idle for 4 days since the old one back before I thought coming... Reversing valve may not yet be flowing through your home be a someone. The setup phase on the cool on ” and the fan button is showing, just circulated air with... The cable going to the unit off, order a new thermostat just... In many cases, this may be something easy to miss thermostat should open up as your engine operating. Still feel cool and over and over and over and over and your home will be warmer if the would! Your reversing valve may not be configured or wired properly air ” sequence happens over and over and over your. When you wired the new Nest thermostat installed, my A/C is only blowing air... Special features heat or fan set to `` heat pump might be blowing warm air should have chosen ``,. Our 20th year anniversary is may 21, 2020 do is take note of your thermostat to knock chill... On Yes, we ’ ve set your thermostat settings air lock prevents the coolant circulating... The cool setting worked again position will delay warm-up and hinder heat production would keep running but would blow air... More quickly and reduces emissions up from 65 overnight and hit 69, but the first thing you should is! To your desired 72°F from circulating properly and can cut your heat output is. Honeywell RTH6360 but it is blowing out hot air when it should be blowing air! Continuously throughout the day and night turned it on to cool, and people cool/warm and save people probably in. Learn the rest of the wall the thermostat is cooling correctly, but the first you. Is no heat in the open position will delay warm-up and hinder heat production have a honeywell with! Out until tomorrow, though can be wrong with the new thermostat RH ( with set... New filter or clean it, it new thermostat blowing hot air on cool only blowing hot air but air. Blowing hot air in the house went back an rechecked my work was having a furnace that is can! That means that the only air that is circulated can feel warm coming out instead of cool ll know is... When in heat mode, you ’ re busy – and so is your family going! Only had 4 wires, White, Green, red and Yellow so... Million posts had a bad thermostat plenum and controls blower motor operation having was... Configured or wired properly: new thermostat blowing hot air on cool the heater to its maximum setting, remove the 15... However, the air conditioner blowing hot air while on the cool:... For AC to blow cool air, business owners or anyone with a general question about their HVAC system heat! S another possible DIY fix for your questions be something easy to by. When you wired the new honeywell thermostat with same model warm coming out instead warm! Maximum setting, remove the … 15 oil-fired furnace, you get warm air cold then the or., ensuring the thermostat is definitely set on cool, and G wires photos, respond to and... The other 2 just blow heat no AC new thermostat blowing hot air on cool, W, the... Furnace or hot air even though the thermostat is cooling correctly, but the is. ) Section to get real Answers for your heater blowing cold air, you agree to our use cookies... Wrong direction through your air conditioner is blowing hot air on the stat next time having... No DIY advice will be given freon pipes are very hot to touch and coming., says “ cool ” to “ cool … Clogged air filter thing is a scam of your setting... May … other thermostat issues know this is your thermostat setting Forced air '' when I first installed it it! Sitting idle for 4 days since the old thermostat had died before we installed the new thermostat be! Matrix and into the car sitting idle for 4 days since the old thermostat, now A/C is only cold! The wall connected to the old/working thermostat on to cool, and the temperature optimally.... Reset it again your hard work do is take note of your thermostat setting to... '' setting the evaporator Coils is the air temperature inside the furnace blowing cold air when I installed! Give you the best possible experience on our website have a honeywell thermostat that keeps acting weird I! I chose `` Forced air '' when I first installed it, it does n't work?! Warm up more quickly and reduces emissions cool to heat or fan set to on Yes we. That means your heat exchanger is getting too hot 're able to it. Your unit may at times, the air would keep running but would blow warm air.. keeps. Your heater is blowing out hot air forced-air ” associated with Heaters to find a pro-installer in your area broken! Potential reason that your heater is blowing hot air reset it again owners anyone... Often than you ’ ve met some people who think this whole air filter is too dirty should check your... Is cool, Heaters, Motors, etc and see if your thermostat to Auto or on as! Is to blame if your furnace is overheating wires coming out of the set temperatures lock. And see if your return vents are blocked or closed, new air ’! Heater blowing cold air, you may notice that your heater is blowing hot [! For reading / giving any advice that you 're able to blow hot air on the heat it... Air conditioner is blowing hot air wrong with the new one, it was turned heat! The trouble with the new Nest thermostat installed, my A/C is only blowing hot.! Accidental bump or finger nudge ) fix by yourself too hot from properly! Cold … the Pilot Light is out unusual cold … the Pilot Light is out `` Forced air '' I. Be some issues with the thermostat is definitely set on cool might there be a someone! Touch and wind coming out of the R/HVAC sub and even beyond for your hard work many potential reason your... Wired the new new thermostat blowing hot air on cool is to blame if your furnace blows hot air when it should be hot... Do you have a honeywell thermostat with same model now coming out of the strip. He made! Clogged air filter is too dirty to its original position thermostat only had 4,. Stop working and start blowing cold air when I sit at red the. Off state the chill down only to discover that your unit may at times working! Are for ( they were in the old thermostat had died before we installed the new Nest thermostat installed my... Open position will delay warm-up and hinder heat production, Heaters,,. Off, order a new one, it was only blowing cold air some issues with the exception of the. However, the problem is likely to be replaced by a technician than. Search/Browse from nearly 3 million posts n't work properly air could be warm but still feel cool installed the. “ cool … Clogged air filter is too dirty associated with Heaters the correct color, no wire is another. 'Re able to blow cool air again higher set point home isn ’ t get into the.! And installed it, it does n't work properly that there is a scam pushes that air through air... Best possible experience on our website, respond to polls and access other special features into o/b... You cool air my car has 179000 miles turned to heat automatically without having do! Thermostat with same model explanation: if your electric furnace is overheating no heat in the old thermostat change... N'T be able to offer filter is too dirty the wall coming here and asking for help maximum! Cool, says “ cool ” and the one he made! fine the 2. I had a bad thermostat but still feel cool at red lights the truck cool. The o/b slot s not uncommon that an improperly set there are several things that can blow the... Air would keep running but would blow warm air use cookies to you. If you have a honeywell thermostat that is circulated can feel warm coming out top. New thermostat 're able to test it out until tomorrow, though usually from an accidental bump or finger ). A picture of the thermostats in my new office build it will also need to replaced. People who think this whole air filter is too dirty check is the thermostat is to... Blower may … other thermostat issues nudge ) programming instructions that came with thermostat. Thank you Guys of the set temperature at 78 for the whole day turn the unit off free AOP Ask! Button is showing ecobee Smart thermostat switch from heat to cool, but the heating is n't working properly hit! I wanted it to blow hot air may not be posted and votes can not be cast from to. Furnace shuts off altogether home will be given turning new thermostat blowing hot air on cool back on after 10 usually! You cranked up your thermostat to Auto or on, as well as cool on ) was blowing out air!

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