topic Re: How to fix blowing hot air when set on cool in Nest Thermostats

How to fix blowing hot air when set on cool

rgaila — Mon, 30 Aug 2021 15:24:22 GMT

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Original Poster: Blase Mancine

have tried the standard answer for fixing the blowing hot air issue by resetting and checking all the wires and I even swapped the w1 and w2 cables to be sure I didn't cross a wire. But I'm still blowing hot air on the cool setting

Re: How to fix blowing hot air when set on cool

rgaila — Mon, 30 Aug 2021 15:24:50 GMT

Hey Blase,

Having cooling issues during the summer can be troublesome. Let's make sure you are good to go, and everything is working correctly. Do you mind me asking if you have a heat pump system? Are you able to send a picture of your current wire set up? Please let me know, so I can take a closer look.

-From Jake K, Community Specialist.

Re: How to fix blowing hot air when set on cool

rfm332 — Sat, 09 Oct 2021 00:30:08 GMT

I have the same problem. Reset multiple times. Removed and started over. I have a heat pump. Can't get it to stop blowing hot. The old thermostat works

Re: How to fix blowing hot air when set on cool

VigBig — Tue, 19 Oct 2021 19:28:48 GMT

Hi,

We have a Heat pump setup. Installed a Nest Learning Thermostat last fall and followed the installation instructions

Heat was working fine on Heat mode, but when Set the unit to cool and the unit started blowing hot air and temperature was continuously rising. Even when the thermostat was set to Off, i could feel warm air blowing from the vents. Only after turning off the breaker, the hot air from vent stopped. Even Eco mode was not working as it was only blowing hot air.

I also set the unit to off, turned off the heat pump/AC/furnace at the breaker box, waited 5 minutes, then powered everything back on. Same result: warm air.

Interestingly, I also read the thread about going to settings | equipment | and looking at the heat pump, but those options don't exist. But maybe it's for an older/different model nest?

Any suggestions appreciated

Wire Connections

Re: How to fix blowing hot air when set on cool

Connie2 — Sat, 06 Nov 2021 14:01:40 GMT

Hi. I have the same problem. Where you able to got into a solution? Do you mind sharing please? Thanks

Re: How to fix blowing hot air when set on cool

Lknops — Fri, 03 Dec 2021 17:44:17 GMT

Same problem. Anyone know the solution?

Re: How to fix blowing hot air when set on cool

12PrayFor — Tue, 07 Dec 2021 02:27:14 GMT

Same problem…is anyone going to share an answer?

Re: How to fix blowing hot air when set on cool

adrianfile — Sun, 26 Dec 2021 00:57:43 GMT

Same problem here. Need a solution before summer.

Re: How to fix blowing hot air when set on cool

Tubbs — Mon, 27 Dec 2021 18:50:34 GMT

I also have this problem. Seems to isolated to the Nest Thermostat

Re: How to fix blowing hot air when set on cool

Hudson224 — Thu, 30 Dec 2021 19:37:42 GMT

Yes I have a picture

Re: How to fix blowing hot air when set on cool

hoopermav — Tue, 01 Mar 2022 22:43:47 GMT

Yes

Re: How to fix blowing hot air when set on cool

dg7080 — Wed, 16 Mar 2022 20:19:12 GMT

Any solutions for this, I guess not.. My 5 month old Nest decided to only blow hot air just yesterday!

Re: How to fix blowing hot air when set on cool

pixelSWORDS — Thu, 17 Mar 2022 20:42:44 GMT

Just had a long talk with tech support (after having an AC repair tech come out) basically the only thing they will do is replace it if it's in warranty. If it's out of warranty then they require you to purchase a new one. That's it. If you're reading this I hope your thermostat is in warranty because they won't do anything if it's not.

Re: How to fix blowing hot air when set on cool

michaelg1070 — Mon, 28 Mar 2022 21:03:49 GMT

My thermostat has been blowing hot air, even when it says it is cooling. I had my AC guy come out to take a look at it, & after double-checking everything, he was able to get the system to blow cold air, only when the nest thermostat was not plugged in, & he determined that the issue was with the thermostat. After I saw similar issues online, I contacted support, but they were not able to help me & were trying to make me jump through all of these hoops to get my thermostat replaced, even though it is still under warranty. They said they needed an invoice to see the work that was done, but my AC guy did not make an invoice, & getting an invoice will cost me money. I am upset because I have been a loyal Google customer, owning numerous speakers, subscribed to Nest aware, having multiple nest doorbells, a Google display & this thermostat & I cannot conveniently get it replaced. I will not be buying another Nest thermostat since this product is known for being defective & I cannot guarantee myself a replacement if it should go wrong again. A thermostat is not something I should need to get replaced every couple of months, especially at the premium prices I have already paid.

Re: How to fix blowing hot air when set on cool

Jchristy — Thu, 31 Mar 2022 03:08:46 GMT

I am having the exact same problem… is there a solution?

Re: How to fix blowing hot air when set on cool

pixelSWORDS — Thu, 31 Mar 2022 03:28:28 GMT

No solution. Google will replace the unit, but it has to be under warranty and needs to be checked out by an HVAC technician (make sure you get an invoice).

Re: How to fix blowing hot air when set on cool

RavingRed — Mon, 04 Apr 2022 16:13:06 GMT

Was an answer to the problem provided?

Re: How to fix blowing hot air when set on cool

pixelSWORDS — Mon, 04 Apr 2022 18:05:42 GMT

The only solution to the issue, according to Google, is to replace the thermostat. Before they will replace the thermostat you need to do 2 things though:
1.) Make sure the thermostat is still under warranty.

2.) Have an HVAC repair tech check your thermostat and give you an invoice detailing the problem.

If your Nest thermostat is out of warranty Google won't do anything for you. There is no software fix (even though it is clearly a software issue) and they won't replace the thermostat if it's out of warranty no matter how long you have used it (I bought a new-in-box 1st gen and used it for 6 months, but the thing was out of warranty already). They also require proof from an HVAC technician that the thermostat is to blame. You being able to install an older thermostat does not count, so you'll have to get a tech to come out and check the thermostat which (depending on your area) is around $100. Make sure you get the tech to give you a detailed invoice about the issue.

All of this to say, if your thermostat isn't under warranty don't bother with trying to get it replaced through Google. Save yourself the HVAC technician bill and just buy another thermostat.

Re: How to fix blowing hot air when set on cool

Jwhalen — Wed, 13 Apr 2022 15:02:54 GMT

No heat pump. And I’m still trying to figure out how to send a picture

Re: How to fix blowing hot air when set on cool

divlis — Sun, 15 May 2022 13:44:13 GMT

Same problem! VERY disappointed with nest products, I am stuck with the expensive and defective thermostats.! Hate the nests' cameras too!