Doorbell repalcement
#1
02-07-14, 10:21 AM
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Doorbell repalcement
I need to replace an old nutone door bell. I have a 20v suplly coming to the old doorbell. Can I use this 20v supply on a new 16 or24v doorbell or do they still make a 20v doorbell? I am trying to avoid replacing the old transformer.
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#3
02-07-14, 11:19 AM
This is my first visit. did your recieve my question?
Doorbells are usually 7-10 volts. Was this a chime you are replacing? If you are replacing it with a chime 20 volts should be okay. The transformers are so cheaply made 20 volts is well within the expected error range for 17 volts.
#4
02-07-14, 12:28 PM
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Door bell voltage
Thanks for response. the old doorbell was a 20yr old elctronic programmable one. I want to use what ever Lowes may have in a cheaper model. They all seem to be 16v. My supply from the transformer is 20v. I think they also have 24v models. All I am trying to do is not crawl under the house and replace the transformer if I don't have to.
#6
02-07-14, 01:06 PM
the old doorbell was a 20yr old elctronic programmable
#8
02-07-14, 01:17 PM
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No, it didn't have batteries. I called nutone and asked the same question i asked you and he "OF COURSE SAID" i needed to buy a transformer with the new unit i purchase. My thought was "hey volage is voltage" why should I have to do that. Me thinks he was trying to sell a product--Ya think. thanks for the info.
#9
02-07-14, 01:29 PM
If the transformer isn't obviously connected (setting next to it) you need to check the voltage output of the transformer at the chime to see if it is 17 volts AC (±20%) or if it is 12 volts DC just in case you are looking at an old transformer no longer connected.
#10
02-07-14, 01:45 PM
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door bell
The measured voltage is 20v a/c. this supply line goes down in the wall and I suspect that the transformer is mounted on a floor joice in the crawl space under the house.
#12
02-07-14, 02:30 PM
I hope your didn't confuse the word transistor thinking I meant transformer.
#13
02-07-14, 03:13 PM
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The model I'm replacing is an 1982 vintage. You are thinking the same as me. I feel like perhaps the model that was originally installed was a standard and the previious owner of this house(who from what renovations he had done gave away his ineptness to even think about being a handyman) installed this unit and that is probably why the unit failed, knowing his knowledge of electricity. He probably just hooked it up not thinking of the voltage requirements.
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