When the heat is on, is it normal to hear a knocking? Very slight
1707802
Hi, We are not sure how slight is the knocking but if it seems like a crackling sound, like the sound of burning wood, that should be normal. Otherwise, there might be an issue inside the item. We hope that helps. Thank you, Sales Team
503471
Our unit has been quiet from the start. Make sure the front cover is on tight--try a bit of foam gasket. It's a good A/C through the recent heat wave, so if there's a problem just exchange it.
1840633
It is very normal; my electrician explained it to me when he installed the thermostat - nothing to worry about! Donna
1932795
I sometimes hear false chimes -- ours is set to door chime mode -- but am not sure what triggers them. I believe this looks for warm bodies that move, not just movement of anything.
446757
When the thermostat goes on and off there is a very slight clicking sound...hardly audible...
1376602
Yes there is soft "clicks" when it first comes on but there are not as loud as previous baseboard heaters we had in the past. Once it is on and hot the periodic cycling makes less noise. My wife says she notices more than I do, but neither of us are bothered by it, and it is in our bedroom.
1972847
Unfortunately, the sound is normal for this particular thermostat. I replaced an older Honeywell with this unit and was amazed that the newer model made such a loud click when calling for chilled air (still summer here). Since the thermostat is in my hallway, I am sure the click is louder due to the echo off the walls. But heck ... my "old" thermostat was so silent that I had to lean in to hear the relay pick. Actually looking at tossing this one for something quieter and with more features perhaps. I am not going to talk to my thermostat from my phone but I would like to have the outside air temp displayed. So ... quiet its not. Unfortunately, the sound is normal for this particular thermostat. I replaced an older Honeywell with this unit and was amazed that the newer model made such a loud click when calling for chilled air (still summer here). Since the thermostat is in my hallway, I am sure the click is louder due to the echo off the walls. But heck ... my "old" thermostat was so silent that I had to lean in to hear the relay pick. Actually looking at tossing this one for something quieter and with more features perhaps. I am not going to talk to my thermostat from my phone but I would like to have the... » Read More Unfortunately, the sound is normal for this particular thermostat. I replaced an older Honeywell with this unit and was amazed that the newer model made such a loud click when calling for chilled air (still summer here). Since the thermostat is in my hallway, I am sure the click is louder due to the echo off the walls. But heck ... my "old" thermostat was so silent that I had to lean in to hear the relay pick. Actually looking at tossing this one for something quieter and with more features perhaps. I am not going to talk to my thermostat from my phone but I would like to have the outside air temp displayed. So ... quiet its not. « Show Less
422941
I can hear a slight sound on mine, along with the light going off. It seems to take several seconds to reactivate if there is constant movement.
10917
None that I have heard, feel a slight hum touching it when it is warming up, thats it.
1412461
It really does not make much noise. It's a buzzing sound but to be quite frank I do not hear it all. I guess it depends on where is sitting. In my case it seats on top of granite on solid structure and I only heard it when there was absololute silence. Its kind of like the sound of white light (office) but to be honest we do not hear it at all. As far as the heat - its warm not hot at all. My cable box gets hotter and so does my PC.
105160
We can hear it in the kitchen with the den door closed..it's sort of a light pop, pop, pop sound...it would depend on how you hit it if it would be a problem
1920715
not sure if it is normal but mine also makes a noise. i make sure i am awake & at home while charging just to be safe.
2075999
Not sure what sound you're experiencing, but it should be very quiet. There is a vague electrical hum if you were to get right up next to it, but that should be it.
357468
Yes, it's normal. Ours clicks also when starting. It's the electrical solenoid activating.
1405896
None. To make sure, I just stood next to the Tempra 20 in our home while my wife turned on the hot water taps at two sinks, and I could not detect any sound.
550327
For the most part, yes. There is a very faint hum of the motor and a bit of a trickle. I actually had to go turn one on to see if it made noise as it is not something intrusive at all. I have three of them in our house.
1876955
It is not soundproofed. There is a soft but still audible click when the heat goes on.