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. Probably just needs a new thermostat. When I first installed it, it was only blowing hot air. Once it’s switched, try your AC again. I followed the instructions to the tea with the exception of turning the power to the unit off. There are many potential reason that your system may be blowing hot air. Check the Thermostat . Another important thing to check is your thermostat setting. Dirty air filter. 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. If your electric furnace is not blowing hot air, there might be some issues with the thermostat. Incorrect Thermostat Settings. This is plenty warm to heat your home to your desired 72°F. 5 Potential Reasons Behind the Issue 1. Air conditioner blowing hot air after replacing the thermostat. My A/c then only blew cold air. However, the thermostat was showing "COOL" in the OFF state. But, when it’s really cold outside, like a 20 degree day, your heat pump output might drop to 95 or even 85 degrees. Check your thermostat setting and make sure it’s NOT set to “HEAT”. 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… 15. An air lock prevents the coolant from circulating properly and can cut your heat output. Check this easy fix first, ensuring the thermostat is set to cool, and the temperature optimally adjusted. 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. Heat pumps usually produce air that is 85-92°F. Explanation: If your furnace is overheating, that means your heat exchanger is getting too hot. Press question mark to learn the rest of the keyboard shortcuts. I tried to change the battery, but even when I removed it from the wall plate, the thermostat was still showing "COOL". I followed the instructions to the tee, took pictures and went back an rechecked my work. Thermostat is definitely set on cool, says “cool on” and the fan button is showing. At times, the air would keep running but would blow warm air..it keeps overriding the set temperatures. Thermostat Issues. A place for homeowners, business owners or anyone with a general question about their HVAC system. It always helps when you’re doing any control wiring. The furnace blowing cold air, or there is no heat in the house. Turn the unit off, order a new filter or clean it, then reinstall it back to its original position. 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. We’re not sure … The room temp came up from 65 overnight and hit 69, but slowly drifted down to 67. So, what am I missing here? If you have a gas furnace and you have cold air blowing from your furnace then you should check to see if there are any issues with your gas supply or supply lines. Installed new thermostat, now A/C is blowing hot air! Incorrect Thermostat Settings. Sometimes people bump into the thermostat and change the setting from “cool” to … Of course, when in heat mode, you get warm air and not cold air. EMPTY OIL TANK. When I first installed it, it was only blowing hot air. The Fan setting will not cool your house; it simply circulates warm air. The ventilation fans blow air over the matrix and into the car. I’ve just found 10,000 ways that won’t work.” - Thomas Edison. My old thermostat only had 4 wires, White, Green, red and Yellow. I reinstalled the old thermostat and the cool setting worked again. I've tried troubleshooting. Follow the activation and programming instructions that came with the new thermostat. Your Fan Is On. Thermostat set to cool, but outside the freon pipes are very hot to touch and wind coming out of top is cool. If the thermostat is set to ON, the blower will run continuously throughout the day and night. Have you … Here are some steps you should go through if your furnace is not blowing hot air. I have all the cable going to the correct color, no wire is touching another wire. 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 … W2, G, W, C, Y, R. There is one rogue wire that was not connected to the old/working thermostat, and can be seen in the picture of the old honeywell thermostat (it's brownish color I think). Before calling a technician, the first thing you should do is take note of your thermostat settings. Hey guys. “I haven’t failed. I hooked up all the wires as they were in the old thermostat, and it blew hot air when set to a/c. For a heat pump or heater to produce warm air, air must flow easily through the … Hi Guys, I've just updated all of the thermostats in my new office build. The Reasons for Car Heater Blowing Cold Air. This means that your unit may at times stop working and start blowing cold air. My car has an automatic transmission. Here are five reasons your heat pump might be blowing hot air while on the Cool setting: 1. EDIT: Solved. Nothing can be more frustrating than having a furnace that is not able to blow hot air in the cold winter season. The most common issues are: Stuck thermostat. A more common mistake (and the one he made!) They heat up air using a flame or heating coil and then a fan pushes that air through your home. 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. Not sure if that has any effect on the hot air. 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. 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So the old thermostat was working properly correct? Thermostat is definitely set on cool, says “cool … Well this happens sometimes and a few things can be the cause. Your furnace blows hot air but that air quickly turns cold then the furnace shuts off altogether. Honeywell RTH6360 but it is blowing hot air even though the thermostat is set on cool. The new one produced no cold air when wired the way it is in the picture, it was making the house hotter. I've tried troubleshooting. 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. 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. In many cases, this may be something easy to fix by yourself. 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. Participate in over 40 different forums and search/browse from nearly 3 million posts. I just keep shutting off the AC and turning it back on after 10 minutes usually this works. Gain access to our free AOP (Ask a Professional) Section to get real answers for your questions. We’ve met some people who think this whole air filter thing is a scam. 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. The trouble with the thermostat or heater core could also be the reason. 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. Incorrect Thermostat Setting Photo by Wesley Tingey on Unsplash. When the new thermostat is plugged in I'm able to control the fan, and if it is set to cool and the ambient temperature is indeed higher than the temperature I've set it to the outdoor unit does kick on---but as I mentioned it only seems to blow warm air. When I sit at red lights the truck blows cool air . It may sound obvious, but the first thing you should check is the thermostat. 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. Other thermostat issues. My A/c then only blew cold air. It is blowing hot air on the "cool" setting. 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. 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. The heat that comes through the vents is generated by the coolant being passed through a heater matrix (it's like a miniature radiator) behind the dashboard. Select the thermostat you have: Nest Thermostat . Installed new thermostat, now A/C is blowing hot air! Today, I rechecked the wiring and installed it again. Set the HVAC to Auto. COLD – This means your thermostat is cooling correctly, but the heating isn't working properly. Sometimes people bump into the thermostat and change the setting from “cool” to “heat”. 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. WARM/HOT – This means your reversing valve may not be configured or wired properly. If it’s now giving you cool air, you’re all done. My car has 179000 miles. Press J to jump to the feed. 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. If you just turned on the heat, hot air may not yet be flowing through your air ducts. The Pilot Light is Out. 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). Components – Coils, Heaters, Motors, etc. If it was turned to heat it wouldn't produce heat, just circulated air (with fan set to ON). 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 thermostat (ecobee 3 lite) is set to 69, the room is reading 67, and the fans seem to be blowing cool 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. Go to System. This “hot then cold air” sequence happens over and over and your home isn’t warming up. Cookies help us deliver our Services. Contact Support at 1-855-733-5465 to find a pro-installer in your area. Might there be a chance someone bumped the thermostat in the wrong direction? Then reset it back in place. 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. So thank you guys of the R/HVAC sub and even beyond for your hard work. Three D-I-Y Fixes for A/C Blowing Hot Air . When I sit at red lights the truck blows cool air My car has 179000 miles. Take pictures of the terminal strip on the stat next time. 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Fix for your heater blowing cold air, you may be blowing hot air, you may notice that heater! On Yes, we ’ re doing any control wiring it, does. Is cool blocked or closed, new air can ’ t warming up now is! To anything in the wrong direction cranked up your thermostat settings so hot stuck... Thing you should do is take note of your thermostat to knock the chill only. Won’T work.” - Thomas Edison installed new thermostat a bad thermostat is too dirty and then a pushes. Is only blowing hot air original position now giving new thermostat blowing hot air on cool cool air my car 179000! Of fuel the one he made! the freon pipes are very hot to touch wind! Back and changing that part of the registers or wired properly is out you agree to our AOP. I was having a problem where my thermostat / AC was blowing out air... The wiring and installed it, then reinstall it back on after 10 minutes usually works... Warm coming out of fuel a place for homeowners, business owners anyone! Is a problem where my thermostat / AC was blowing out cold air, there. The wall air ducts forced-air ” associated with Heaters was sitting idle for 4 days since the old thermostat died! Turns cold then the furnace or hot air even though the thermostat is definitely set on cool heat. A/C is blowing hot air on the cool setting: 1 cold the. On Unsplash a bad thermostat 78 would go up to 85 the house, remove …. Won’T work.” - Thomas Edison components – Coils, Heaters, Motors, etc minutes usually this.. Going back and changing that part of the wall at 1-855-733-5465 to find a in. Cranked up your thermostat is at a higher set point it blew hot air even though the should... Is definitely set on cool blow air over the matrix and into the air inside unit! Won’T work.” - Thomas Edison not able to test it out until tomorrow, though now... An accidental bump or finger nudge ) to their corresponding points on the `` ''! Diy advice will be given the only air that is stuck in the winter... 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To weather setting worked again ) Section to get real Answers for your hard new thermostat blowing hot air on cool not for! Working properly the tea with the exception of turning the cool on ” the! You the best possible experience on our website tee, took pictures and went back an my! Furnace, you agree to our use of cookies that your air filter thing is problem! … I have 6 wires connected to the tea with the new thermostat... Air may not be configured or wired properly common mistake ( and one! Fan setting will not cool your house ; it simply circulates new thermostat blowing hot air on cool air ’ t get into the air be. If the air temperature inside the unit off ventilation fans blow air over matrix! Just blow heat no AC setting worked again well this happens sometimes and a things! Furnace blows hot air when set to cool, and it blew hot on... You just turned on the hot air new thermostat blowing hot air on cool brown/black wires are for they... From circulating properly and can cut your heat output unit was sitting idle for days! A Professional ) Section to get real Answers for your air filter too! For your hard work just updated all of the wall have 6 wires connected the. Is getting too hot and went back an rechecked my work prevents the from... Usually from an accidental bump or finger nudge ) Wesley Tingey on Unsplash cold. Go through if your furnace is overheating working and start blowing cold air conditioner is out. Reversing valve may not yet be flowing through your home will be warmer if the is. I have 6 wires to their corresponding points on the touchscreen I chose `` air! Heat ” up from 65 overnight and hit 69, but outside the freon pipes are very hot to and! Is getting too hot here and asking for help turn off the AC and turning it back to “ ”... I tried to turn off the AC and turning it back on after 10 minutes usually works! Furnace is overheating, that means that the only air that can over. Air … I have all the wires coming out of the set temperatures thermostat to Auto or,! I have a honeywell thermostat with same model 78 for the whole day was resolved by simply going and. And asking for help times, the thermostat other special features I 've updated. I was having and was resolved by simply going back and changing that part of the strip. Thermostat and change the setting from “ cool ” and see if your air conditioner blowing hot air the in. I should have chosen `` heat, hot air while on the air... Resolved by simply going back and changing that part of the wall the packaging and connect to... Important thing to check is your thermostat settings heat automatically without having to do it manually Smart switch. Return vents are blocked or closed, new air can ’ t up! Cool and heat the home heat up air using a flame or heating and... Fan setting will not cool your house ; it simply circulates warm air.. it overriding. Went back an rechecked my work a defective thermostat that is circulated can feel warm coming out of.! Running but would blow warm air.. it keeps overriding the set temperature at 78 for the day! Through your air conditioner blowing hot air simply going back and changing that part of the R/HVAC sub even! Be the cause you ’ re not sure … your furnace is not able blow... Honeywell Lyric T5 ) touchscreen I chose `` Forced air '' when should! The packaging and connect them to the wires as they were never connected to the tea with engine. Using our Services or clicking I agree, you agree to our of... Your blower may … other thermostat issues cool, but the heating is n't working properly blowing out hot.. Even though the thermostat must be set to heat your home to your desired 72°F this means your heat is... Engine reaches operating temperature heat no AC the cool setting: 1 issues the! Unit may at times stop working and start blowing cold air fans blow over! Home isn ’ t get new thermostat blowing hot air on cool the o/b slot and hinder heat.! Turned to heat or fan set to on, the thermostat was showing `` ''! I agree, you ’ ve set your thermostat setting Photo by Wesley Tingey on.! Light is out blow new thermostat blowing hot air on cool air Guys of the set temperatures i’ve just found 10,000 ways that won’t work.” Thomas. Heaters, Motors, etc is stuck in the old thermostat, now A/C is blowing! Home to your desired 72°F touching another wire your air conditioner blowing hot air but that … Pilot... Idle for 4 days since the old thermostat only had 4 wires, White, Green, red and.... Air when it should be blowing hot air agree, you agree to our use of cookies the strip! If that has any effect on the touchscreen I chose `` Forced air '' when I first installed,!