Has anyone noticed the heater continually cycles on and off and emits a low hum when cycling on?
1861238
cycling is not on and off on and off constantly . There is a window of temp change that must occur before the thermostat changes to a higher temp or for the thermostat to react ( go 'on' )due to a tem drop. Ihave not heard this action you speak of nor heard any audible humm. It works not unlike the termostat on your home air conditioner. A very slight temp change is NOT going to make the comprerssor go on - or off. Otherwise -every couple of miutes it would go on or off constantly.
1861239
Never have heard anything , but hums or noises could be resistance... either from outlet or heater unit itself.... but noise shouldn't happen.... prob wanna get that checked
1155825
There is a slight hum, intermittently, when it kicks on to maintain temperature. Not much, however.
1058721
I haven't noticed this problem. I use the heater to heat up my garage to allow me to workout. Once the heater reaches the preset temp and turns off I unplug it. I'll let it cycle next time I use it to see if I experience the problem you describe.
1720681
If your problem is occurring even with the temperature low AND your tank is older, it is possible that the heating coils within the heater are deteriorating. This exposed "hot spots" that boil the water even if your temperature is low. Or...the thermostat is broken and on "high". This has finally happened to mine and I get noise and sputtering even at the lowest setting. Time for a new tank for me. Mine lasted 10 years.
533485
If you use the sleep mode it is a low hum but I usually can't tell it's on. On regular mode just sounds like a fan.
1475404
not sure hasn't happened, but will come back on if you move the heater while on. shuts off and will go on by itself.
1250819
I've had the lamp for a couple of months now and have not noticed any humming or other noise when on. I sometimes have it on for a couple of hours at a time and it has been cool to the touch.
445435
Margo - I have owned this toaster for a while and have never heard any type of humming noise. It may or may not be a problem. It could be the elements reacting like some light bulbs do when turned on and will hum. I wouldn't think though that this is normal.
1688832
mine doesn't hum. I wish I could help. Maybe it is the model. I had one, that i loved, and one day, it just quit working. They didn't make that model anymore, and I had to cut the plug, and send it to them, and then they sent me the most similiar model. But I really loved my old one. It was beautiful. This one works great, but is not as aesthetically pleasing to the eye. :-(
43268
No. It's in my office at work which isn't always the quietest spot but I've never once heard a noise from the heater. I also have the bigger version in my home tank and have never heard a sound from that one either.
1001489
No it pretty quiet but as of last week 12/4/14 I noticed it has stopped working right and skips cycles and sometimes just completely stops working so now I have to check the timer every few hrs to make sure its still working right !! I have had it for about a yr and before that never had a problem
1831380
My units have a fan hum when running, but nothing that bothers, even at night when I occasionally leave them running al night.
208944
Ours makes a small cyclic hum. You can hear it. It doesn't bother me, but everyone has different tolerances.
337844
yes, when it's running it will make a humming noise, sometime with a vibration.
928593
Mine does not have this high pitch you're talking about, just a loud hum, rather like a window air-condition unit. Since it is in my basement, it does not bother me. Maybe you have a bad unit?
43269
If your heater is making noise there is something wrong, or it's a piece of junk. My ViaAqua makes no noise and is working. I suggest exchanging the defective unit.
1972849
I had the same noise with mine. Couldn't figure out why. It stopped when I upgraded to the Nest Thermostat.