8 votes

Is there a way to run my furnace fan intermittently without heating the house more?

I don't think most (any?) of the "dumb" programmable thermostats allow what you want, but I know (because I have one) that the ecobee3 has a setting where you can ask it to run the fan X ...
Huesmann's user avatar
  • 3,438
4 votes
Accepted

Connecting C-wire to 1989 Forced Air Electric Heater

I have colored the "C" wire cyan, also a link wire and an unused terminal I suggest running a wire from the unused C terminal through to an unused space on the the barrier junction block. ...
Jasen's user avatar
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3 votes

Connecting C-wire to 1989 Forced Air Electric Heater

Look closer. You have 24 Volt Transformer clearly labeled. On one side of it there is the C-wire and 24 volt coming out Two yellow wires. One goes to the R on the thermostat and other relays, the ...
Traveler's user avatar
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3 votes
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Confusing light switch - two blacks and a red, but with white and green wires?

Appears to be a bog-standard three way switch. Meaning another switch also controls the same one light. Depending which "end" of the 3-way you are at, the black on the black screw and the ...
Ecnerwal's user avatar
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3 votes
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Is 3-way switching circuitry compatible with smart ceiling fans?

Never say never, but: FWIW, I have never seen a 3-way smart fan switch or smart fan with 3-way switches. Yes, you have another option: use a smart fan controller like "Universal Smart Wi-Fi 4-...
MadMonty's user avatar
  • 1,010
3 votes

Best way to control many lights with a single switch

Yes, C Putting in smart bulbs or cans and retaining the existing switches will have the (big IMO) disadvantage that when certain wall switches are turned off, their respective lights will go off line ...
jay613's user avatar
  • 37.7k
3 votes

Replacing an existing 2-wire doorbell transformer with a 3-wire transformer

The new transformer shows a black, white, and a green wire. The colour green(or bare) is only allowed to be used for ground. Having a green wire is only there for your safety. It does not change how ...
crip659's user avatar
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2 votes
Accepted

Fire / smoke detectors with email notifications

Look toward hobbyist-install security systems. These usually at least have a test mode in which notifications go only to you rather than the central office, and some which integrate with home ...
keshlam's user avatar
  • 29k
2 votes

Is there a way to run my furnace fan intermittently without heating the house more?

Nest (which I have) lets you run on a schedule or as a one-time operation. Either way, you are limited to 15-minute increments. So, no 5 minute option (I'd use this too, if it existed). Fan control ...
Tom Hundt's user avatar
  • 311
2 votes
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Installing a thermostat with 3 wires only (red/R, white/W, and black/G)

If you have only three wires for a heat-only system, you have three options that don't involve running new wires. These are all described in the ecobee documentation. Use your wires for R, W, and C. ...
KMJ's user avatar
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2 votes
Accepted

Can I connect two Line (hot) wires in a single phase circuit safely?

Here's the part you're missing. The Sonoff device must be wired in series with the load just like a regular switch. And just like any other switch, if you bridge the pole with the same line hot wire,...
Robert Chapin's user avatar
2 votes

Connecting C-wire to 1989 Forced Air Electric Heater

I don't think that this has been clearly explained: In most thermostats (and according to this wiring diagram), the R wire is hot and provides power to the thermostat. The W wire goes through various ...
gbronner's user avatar
  • 5,653
1 vote

Is 3-way switching circuitry compatible with smart ceiling fans?

You say "3-way" but what you actually want is control of the fan/light in two places. You're not married to the idea of using dumb, plain "3-way" switches in the second location. ...
Harper - Reinstate Monica's user avatar
1 vote

Can I connect two Line (hot) wires in a single phase circuit safely?

That won’t work. You’ve just shorted out the switch. It’d work exactly the same as if the switch weren’t there at all. In fact, the switch won’t even get power to function. There’s basically no way to ...
DoxyLover's user avatar
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1 vote

Installing smart thermostat but can’t fish new wire

If your problem is the most common one, lack of a C wire, the easiest alternative is to use a C-wire adapter. You install a pair of boxes, one at the furnace and one at the thermostat, which ...
jay613's user avatar
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1 vote
Accepted

Wiring color / gauge for pigtails at the junction box

In absence of any other pictures or information, in the USA, neutrals are typically white insulated, and grounds must be either bare or green. 14ga minimum for 15A, but could always be larger (i.e. ...
Milwrdfan's user avatar
  • 4,519
1 vote

Where to connect a common wire to a Burnham alpine Furnace

As it stands right now you are not equipped to have a C wire. It is missing. Or you are not telling us all the wires that come out at the thermostat. Using multimeter find out which 2 wires give you ...
Traveler's user avatar
  • 17.4k
1 vote
Accepted

Replacing an existing 2-wire doorbell transformer with a 3-wire transformer

A way to test the transformer to see if it is the doorbell transformer rather than the HVAC transformer (before disconnecting anything) is to clip or touch the leads of a multimeter (in a/c voltage ...
Jim Stewart's user avatar
  • 21.9k
1 vote

Best way to control many lights with a single switch

In general, I agree with jay613's answer of C - Smart switches. Definitely better than A or B. But another possibility is to investigate the wiring and see if things can be combined. For example, if ...
manassehkatz-Moving 2 Codidact's user avatar

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