Thermostat gone bad? Inaccurate Temperature reading? T-stat Dead-band explained.

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Have a thermostat giving you weird readings or operating different than you're used to. Joshua Griffin goes through how each thermostat has a dead band where the thermostat will turn off after reaching temperature and turn back on. Your thermostat may be operating correctly. They may have a deadman set up to be more efficient for your home rather than short cycling.
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Опубликовано:

16 сен 2024

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Комментарии : 140

@danschilz3693 2 года назад

Accuracy matters when your thermostat is part of a conservation program where the electricity provider takes control of it during periods of high power consumption. The temperature they select may not be comfortable if your thermostat is inaccurate.

@EINTRIana 11 месяцев назад

You can usually disable that in the app!

@RCT21985 2 года назад

What do you mean it doesn't matter? My thermostat says it's 59 in my bedroom and my thermometer says its 71. That's a big difference and it makes my heater run all the time.

@NewHVACGuide 2 года назад

Well it doesn't apply if it reaches temp and doesn't shut off. I was simply pointing out it doesn't matter if it's exactly matching a thermometer

@bl_leafkid4322 2 года назад

You could have a duct work issue

@adannino1990 Год назад

Many things could be your issue. Could be voltage, or lack of insulation or air flow through inside the walls

@singapore5530 Год назад

for some reason my thermostat is showing a negative temperature.

@hillcountrygarage Год назад

American Standard Gold 824 reads high on the thermostat while the actual air temp is 5+ degrees lower. Unit wants to run and run trying to get down to the set temp of 77 degrees. External thermometer will say 71 degrees and the 824 will say 80. Oh, and the thermostat is brand new. Installed by a certified American Standard dealer. Can't wait to see this month's electricity bill!!

@TheNELL1964 3 месяца назад

My thermostat doesn't turn on or off on the auto???? What should I do

@teinepolypolyteine8315 2 года назад

Thank you for this good info. My issue is, the thermostat is just stuck at 70. Weather air or heat. It’s turning off and on with Auto while on heat. I just can’t change the temperature.

@NewHVACGuide 2 года назад

Sounds like it may have gone bad or the buttons aren't working? May be a good idea to get a pro in there

@yatablah393 10 месяцев назад

Mine is completely wacko. I'll turn it on it'll read like 18 degrees, I set it to 20. Goes to 20 turns off then sometimes it never comes back on. Other times it comes on and doesn't turn off. It'll get so hot in here like 25 degrees and the thermostat reads 19. They were even replaced by the landlord and it still does it.

@brainfreeze1925 Год назад

Is that a small bottle of whiskey by your right shoulder and wine by your left? 😜

@MrBababuwi 2 года назад

accuracy does matter

@dssi5355 Год назад

Amen. Accuracy matters because when thermostat goes out, AC will keep running non-stop and your electric bill will be double.

@codybrunson5156 Год назад

Got a new construction house, AC is set to 75, temp is reading 69. It’s been high 70s, low 80s where I’m at the past couple of days, AC has never turned on. Just got the house so AC hasn’t been on. What could the issue be?

@magnus33john Год назад

Thermostat like anything else do fail and with the electronic ones it can be hard to tell sometimes. Ours appeared to be working fine but it turned out to not be reading temps correctly. It would go up fine but when it came to going down it had a problem and after 10 min a fridge that was 4 degrees it only made it to 18.

@ChristianaAke 2 месяца назад

What if the temperature is not shutting off and its dropping to like 60 when the house is set to 75?

@bumbaclot813 2 года назад

my thermostat is reading 81 and the a.c won't turn off. i need to turn it off manually. also cool is flashing on and off on the screen.

@scottfisher788 8 месяцев назад

Thank you very much ! This really helped explain my situation !!

@NewHVACGuide 8 месяцев назад

You’re welcome!

@ewicky 2 года назад

First! haha. Great video. I'd be sure to mention that deadband issues are much less of a concern with VRF type systems, since they scale automatically in a much narrower band.

@NewHVACGuide 2 года назад

Good point!

@jackbradley6042 Год назад

Perfect explanation! Thank you.

@dududududuify Год назад

Hi. I'm not sure if you will read this. What is going on when the unit continues to run for a long amount of time after reaching the set temperature on the display?

@mistygillis1119 2 месяца назад

I have the same question! My ac never turns off unless I turn it off!!

@rnestg2043 Год назад

Thanks for that interesting information. I have a thermostat that when my wife does laundry and she turns on the Dryer, since the thermostat is connected by the wall of the laundry room. I have set up my thermostat to 77 in the house and when the dryer goes On the temperature in the thermostat goes up to 78 and the AC stays running for a long time until the dryer stops. I will like to know , do you think my thermostat is going bad or something else going On. Thank you for the info.👍

@jonnymakers9560 7 месяцев назад

I just had a brand new furnace installed and now my thermostat temp is not working properly. sometimes the thermostat is STUCK at a temperature. And the furnace keeps going and going and going but the temperature reading never changes. I have purchased a brand new thermostat and it does the same thing. Is there something wired wrong with this brand-new furnace? It is a variable speed two-stage furnace...

@joycewedel9084 9 месяцев назад

My rubbery button to increase the heat temperature doesn't work... Its blank. I have new batteries & the other button works to lower the heat. Therefore I get no heat. ????

@juliaheacock9726 3 месяца назад

Mine don't shut off anymore because inside temp is rising and what I set it at don't match. Way off.

@makanagarma9951 10 месяцев назад

How might I be able to resolve an issue where thermostat is set at 72 but for some odd reason the system warms up my home to 82?

@shaunsykes96 3 месяца назад

I have a humidity control thermostat that is 10-12° different than what's on the thermostat. Should I replace or just ride with it? Thanks

@juliaheacock9726 3 месяца назад

I set mine at 71 and the inside temp says 75 or 76. I don't know what to do

@felixhernandez9354 2 месяца назад

My problem is that thermostat said it reached 70 degrees and turns off but house is like 80 would you recommend something? Thank you

@dy1837 Год назад

so are you saying, for example, when dead band is 1 degree (for cooling), it should run until desired temp is set.. let's say you want the desired temp to be 75 degrees. your thermostat shows 74 or 76. AC kicks in then turns off in 5 mins. Fan is still spinning for another 2 mins or so. temp change of degree doesn't take long in hot weather so AC kicks back in about 10 mins or so. Does this sound normal?

@auriarivera5059 Год назад

I normally have my thermostat on hold at 72 degrees. Recently had some issues where I wasn't getting any heat. Thermostat was working. There was an issue with heating unit. Owner fixed issue and in order to test it had me set thermostat at 80. It went up to 74 and but then never went up to 80 degrees. It never went up to the 80 degrees thermostat was set to. Does this mean there is still something wrong or is this normal?

@user-ls7br4um7y 8 месяцев назад

Why would the pipe on baseboard is 65 degrees. But it’s 55 in the house.

@FIGHTINGGAMER Год назад

My thermostat shows 77 as room temperature and set temperature is 70 is this normal

@JG4AU 4 месяца назад

This seems to be my issue right now with my Trane. It’s cooler in this house than 77. I have no clue what’s going on.

@FIGHTINGGAMER 4 месяца назад

@JG4AU we called someone and they replaced are thermostat and did a yearly inspection for it might have to call someone but basically I think behind are thermostat is loose wires that come unconnected

@nenanenica6783 2 года назад

Please help. Thermostat is on 76. AC won't stop on 76 no matter what temperature is outside.

@shannaoconnell1104 Год назад

So nothing to worry about when I set the thermostat at 75 but the AC doesn't come on until it's 77 degrees?

@vickiewells2761 Год назад

My problem is the A/C part of the thermostat. I can put it on 76 and it will go up to 78 without me changing it. Why? Thanks

@judegoodman6854 Год назад

I have a scenario that the thermostat won’t adjust to my required temperature. It is too cold and I can’t adjust the temp, any help!

@istayfr3sh45 6 месяцев назад

Sorry I hate this thermostat it’s saying 82 in the house I can’t even low it if I try it moves to the other setting and in the night it’s really hot I’ll be itching it’s crazy

@markwilliams6785 2 года назад

I think after watching your video, I have a deadband of 3 degrees. My thermostat reads 70 but the actual temperature in the room is 67. I’m I wrong and if so. What would you recommend?

@NewHVACGuide 2 года назад

Deadband is something different. However, some thermostats allow you to change the ambient temp shown

@markwilliams6785 2 года назад

@@NewHVACGuide thanks for the heads up.

@adannino1990 Год назад

What you want to change is the offset

@Brian-vl3ng Год назад

My Hunter thermostat is set on a schedule. About an hour before the schedule changes the heat turns on when the setpoint is lower? Example is actual temp in 66 and setpoint is 62. Heat turns on. I'll manually change the setpoint from 62 to 63 and it'll shut off until the schedule changes.

@NewHVACGuide Год назад

Definitely sounds like it’s malfunctioning and may need to be replaced

@gzsfreak Год назад

Hello. I have a Bryant heat pump/ac. For some reason my thermostat is not giving the correct outdoor temp reading any longer. Example: its 76 degrees outside, but my thermostat says its 136 degrees. My auxiliary heat typically comes on when the outside temp is somewhere in the area of 35 degrees. At that point I just turn my heat pump off and start a fire in the house, to keep warm. When then auxiliary heat strips come on it more than doubles my energy bill. That’s no bueno. With my thermostat not reading correctly I have had the auxiliary heat kick on when it’s 65 degrees outside. Do you have any idea of what the issue may be and how I can go about fixing it? Thank you so much.

@timmcclure3767 4 месяца назад

Great video!!!

@NewHVACGuide 4 месяца назад

Thank you!

@jahottie 9 месяцев назад

My situation is different. I set the themo-stat at 80* when i am away. When i got home the house is comfortabily cool, I heard the ac running, i check and the therno stat is reading 74 in the house while still set at 80 degree. If this ban is to keep the ac from turning on when the temp is way below the set temp.. what is your take on on this

@reginawilson4349 2 года назад

Hi my thermostat reads way off. My air is set at 69, the other side reads could be 96 the 20mins later 39. Air conditioner is working....what is happening

@TheWickedOne5150 Год назад

Old house have two thermostats. Heater reading 72 evap reading 78. Set another thermometer next to it it drops to 72 as well and the cooler stays at 78. Evap takes for ever to drop to turn the unit off once hose is cooled. Think it’s just bad tried cleaning vents but still always reads high until the evening. When the whole house is actually cold. Time to replace or is there a fix?

@devin7825 Год назад

Replaced our thermostat because it was resetting itself and also not going on when I have the temperature set on 74. It would eventually go on and cool. It is currently 76 but the Ac is set for 74. It will go on when it reaches 78 and cools it down. Why would that happen?

@dwainhuff6149 Год назад

Modern day Honeywell thermostats have a room temperture calibration button on them, that lets your calibrate your thermostat to the actual temperture of the room, and then from there your room setting temperture will be more accurate then otherwise.

@tristenmaxson7848 8 месяцев назад

Where is it

@kim162 Год назад

Mine isn't reaching the temp it's set at. I set it at 72 but it only reaches 74. What could the problem be?

@m7md_m7md 11 месяцев назад

How can I set the deadband or the differential set if possible on my ICM thermostat?

@stoneage8810 Год назад

i have 4 wireless. honeywell room thermostats, new ones, after putting the batteries etc, they show room temperature = 18.5 C .. while it is about 10 C... any idea why and how can this be fixed ? i mean this kind of deviation seems too big ..... normal deviation is 1~2 degree C

@TJ-22 2 года назад

Great video

@belkysosorio7985 2 года назад

Hi, my english is very bad, sorry, I have honeywell thermostat and I set the ac at 70 and my house fell very nice but the termostat shows 84, which is the problem? Thanks in advance

@ericsamuels1644 Год назад

I have a 3 bed 1 bath apt unit that’s not heating properly. Sometimes the thermostat reads 70 but the living room is noticeably not 70 degrees. It’s not problematic in the living room and the medium sized bedroom. Would moving the thermostat help? The living room has a return vent but the medium sized bedroom doesn’t. Small bedroom and master warm up perfectly. Small doesn’t have a return vent and master does. Any ideas on what might be the issue?

@lisasexton3683 2 года назад

My thermostat is not adjust set 72 and thermostat say 80 doesn't go down??

@billydeluca6776 Год назад

I set my window AC at 70, but it will not come on until it's 76 in the house,and it will not shut off until it's 66 in my house. There is a 10° dead zone on my 8000 BTU AC. How could I make the dead zone shorter?

@enriquejimenez8322 Год назад

What about thermostat off but boiler keeps running water

@jvaldez680 8 месяцев назад

What does it mean when the inside temp is blank

@ryangunwitch-black 2 года назад

Mine is set to 73 and showing 77 in the house. And it's not coming down.

@NewHVACGuide 2 года назад

Time to call a pro!

@TheXanderGrim 2 года назад

honeywell set at 69 feels like 51 reading 66 its so bad if you sit anywhere near a vent you need a blanket or coat ....... any suggestions

@gaylefriedman3773 2 года назад

How to cool you house without a large Electric Bill?

@lisalisa7416 Год назад

When thermostat keep run does that mean fan on auto

@knockda887 Год назад

Mine set to 74⁰ but it's 70⁰ freezing 3 zomes

@markhopkinsphoto7257 Год назад

I have np AC but when I try to manually control and hold the temp at say 64 it then jumps to 70 or 72 and is way to warm for us, especially upstairs. My system never did this before. I even bought a new thermostat and did the same thing. There are only a red and a white wire coming out of the wall and they're hooked correctly. I did have to re-light the pilot light. I haven't used the heater since last winter. What else can be wrong?

@noahriding5780 Год назад

It seems to be a lot of newer thermostats that are doing this. Ours is an old thermostat and its dropping to low 60s overnight when it shouldn't.

@dianebeland3290 2 года назад

We have a new furnace and thermostat plus wiring to thermostat. We have it set on 68 it reads at least 10 to 12 degrees higher. My mom is 90 and it is her house and she is complaining that the house is too hot. I tried calling the furnace manufacturer,they will only give tech support to the installer who is on a cruise. Any suggestions would be helpful.We only have heat no AC .

@NewHVACGuide 2 года назад

Wow. Wish I could take a cruise… definitely sounds like a pro needs to get in there. Could be something simple but also could be something crazy

@pamelamchenry4934 2 года назад

I have a Pro t701 thermostat. The fan will work. But I cannot get the digital temperature to change. The room temperature says 74°, set at 73°. THE ACTUAL TEMPERATURE IN THE HOUSE IS 64°. What can I do?

@NewHVACGuide 2 года назад

Hello. I’d call a pro to help. It could be something simple but it may be something more involved.

@defytyrantsofmississippi2198 Год назад

I have a problem with my mini split not coming on in AC mode when I set the thermostat down to say 66F and it’s 75F or 80F in the room. It usually won’t come on until I bring the thermostat setting down to 63°F. This is a brand new system that I installed less than a month ago. The system is made by comfortotal. I live in Northeast Mississippi and the humidity is quite high here.

@blakedelacruz9496 2 года назад

I’m having a problem with what I’m assuming is my thermostat. I have a White Rodgers model number 1F-80-361 I have the desired tempature number (small number on the right to be 72 degrees the tempature on the thermostat says it’s 76 and for whatever reason lately it hasn’t been reaching 72 degrees. It’ll stay stuck between 76 and 85 degrees and sometimes the desired tempature will change on its own to 85 degrees and idk what’s going on do you have any ideas what this could be?

@jonnymakers9560 7 месяцев назад

That sounds like my system..I have a brand new furnace...I have called the contractor. My old system this never happened. I think it is a faulty system..maybe bad power supply wrong voltage or something else

@onlyme8870 2 года назад

I have a room that I pay to heat but its a public space. Its a T86a7x103a1 mercury. Has 3 wires to it blue brown and yellow. Id show a pic of the back. But this space doesn't allow. For 9 years its been set to 50 as thats the lowest it would go. But lately its heating to 70 and I'm using an extra 300 per month in fuel cost. Would this be an easy diy or have a pro come or handyman?

@NewHVACGuide 2 года назад

I’d say have a pro take a look

@tyerinem 9 месяцев назад

Why does mine read 24.5? I need help!!!

@NewHVACGuide 9 месяцев назад

Celsius??

@lennygarcia6546 Год назад

What about if the temperature is not triggering the a/c to shut off. My energy bill will be significant. How do I fix this? Thanks.

@vyger6336 Год назад

I have the same problem Temp set at 71 thermostat reaches 71 but A/C keeps on running .

@roninkegawa1804 Год назад

Wrong title. You never covered how to recalibrate the thermostat.

@switcheffect 2 года назад

just had a new thermostate put in and a new furance and when i set it to 68 it never kicks on cuz the room temp says its 70 all the time even when its 25 outside its claiming its 70 so if bump heat setting to 72 then the room temp will say 72 to it seems they both always say the same thing for it to kick on

@NewHVACGuide 2 года назад

Definitely might want to have a pro take a second look at that

@wandabrowning2543 Год назад

Thermostat is stuck on 25 degrees and won’t change

@ii-ok3jo 2 года назад

If thermostat set at 50 but it is 80 degrees in house

@JeepTJWheelin 2 года назад

Need advice please. I have a Honeywell Vision Pro and it's been taking a long time for the heat to kick in. It didn't kick in until it hit 58° last night! So I set it to 74° on the 600 setting and 67° on the 610 setting. But it's still not turning on at 67°, still waiting until it hits 58° or 57°. Trying to stay within 67° - 74° range, especially now with these low 20 temperatures of late. 🌨❄

@NewHVACGuide 2 года назад

Eek! 58º is cold! I'd say call a pro. It's probably the thermostat, but it could be something else too.

@JeepTJWheelin 2 года назад

@@NewHVACGuide It's starting to go on at 62° as of last night and this morning. But will call a pro soon. Thanks

@Didik-cq8wy Год назад

Trimaksih bos

@danletter9357 2 года назад

I want to change the thermostat to say 76 degrees but it’s actually 72. My coworker is killing me with the fucking heat at a shared office. If he sees 76, and it’s really 72, we’d both be happy. It ain’t that it’s too cold, dude just looks at the number.

@NewHVACGuide 2 года назад

Gotcha. You can change the reading 🙂

@lakeyagray8534 2 года назад

My thermostat is staying on 88 and not cooling off, with the air conditioner on

@NewHVACGuide 2 года назад

Sounds a pro needs to take a look

@MrBababuwi 2 года назад

check your filter or find out if there is any heat around the thermostat before calling a pro

@willhill8715 2 года назад

My question is why is my temp set to 75 and I wake up and it’s 66 in the house granted it’s cold out side but shouldn’t the heat come on to match the set temperature ?

@NewHVACGuide 2 года назад

Sounds like something is wrong pal. Get a pro in there!

@reginawilson4349 2 года назад

Why do you constantly refer problems to a pro? Ppl are asking you questions for advice all you can say is call a pro. Either help these ppl or shut down your channel. This is very frustrating.

@brooklyn7941 2 года назад

I set my at 76 and I been noticing for serval months it would turn off then I notice it feel real hot and I check the thermostat and it somehow jumped to 85 , I changed the batteries and haven’t had that problem since , I been changing the filter every month checking the pipes to make sure water not trapped idk what the problem was

@NewHVACGuide 2 года назад

Low batteries? 🙂👀

@brooklyn7941 2 года назад

@@NewHVACGuide I’m guessing so , because I been changing the filters n checking the pipes Nuño it the oridinary tho

@oddopops1327 Год назад

👍👍😊

@sypex6873 2 года назад

The 'deadband' is called a hysteresis

@jaimetarango7423 Год назад

Who the hell cares about accuracy i dont as long as it keeps me warm or my waterpipes from freezing and bursting when its very cold out side

@NewHVACGuide Год назад

I'm with you on this. But some folks are concerned if there's a degree difference!

@keenanfaddy901 2 года назад

My thermostat is set on 74 but the A/C cuts off at 79. Can anyone help me?

@NewHVACGuide 2 года назад

Might need to call a pro

@keenanfaddy901 2 года назад

@@NewHVACGuide Thanks for responding so quickly

@MrBababuwi 2 года назад

check if you have any heat generating around the thermostat sensor whether it is portable device or big whole in drywall. Thermostat will shut off sooner thinking it has reached 79 because it senses heat which is confusing the built-in sensor. No need to call pro

@seanmccary4994 Год назад

Okay I have a concern, my thermostat is saying it's anywhere between 97-99 degrees in my house, when the actual temperature is around 66. Now when I disconnect it from the house for a time, and connect it back at the start it will read correctly before it shoots up again. So I assume the sensor has a issue, but am not really sure how to inspect it.

@seanmccary4994 Год назад

I should add this is a thermostat I've used for a long time 5+ years, and it just started happening the last 3 days.