HVAC Guys...

CatsFan4Evr

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Nov 27, 2003
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I purchased one of those nifty Nest thermostats and it looks like I don't have a C Wire with my current thermostat. What's the typical fee to run a new wire from furnace to thermostat? The Nest site says my wiring is compatible without it, but I'm not sure I want to take chances.
 

mashburned

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Mar 10, 2009
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How long of a run from furnace? I'd say about 350 for an average c-wire run. I'd also say screw that c-wire, you really don't need it with an advanced thermostat like the nest.
 
May 6, 2002
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How about one of these? It seems to be rated highly for people with your issue. I'm not sure on ease of installation since I have no experience with your problem.



https://www.amazon.com/gp/aw/d/B01IF3QXMC/ref=cm_cr_arp_mb_bdcrb_top?ie=UTF8
 

CatsFan4Evr

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Nov 27, 2003
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How long of a run from furnace? I'd say about 350 for an average c-wire run. I'd also say screw that c-wire, you really don't need it with an advanced thermostat like the nest.

Not far at all. Maybe 15 feet at the most?
 
May 6, 2002
30,804
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How long of a run from furnace? I'd say about 350 for an average c-wire run. I'd also say screw that c-wire, you really don't need it with an advanced thermostat like the nest.

From what I was reading while trying to help research for OP it said this below.

The popular Nest thermostat claims to work without a C-wire, there are some caveats. Without a C-wire, the Nest gets its power from your heating or cooling system… assuming it’s running. When it’s not running, the Nest still needs to get power. The Nest will “pulse” the heat wire, turning on the furnace to pull a bit of power to keep itself going.

In some systems, this is unnoticeable, but in others, the furnace responds as if being told to turn on and then immediately off.
 

CatsFan4Evr

New member
Nov 27, 2003
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How long of a run from furnace? I'd say about 350 for an average c-wire run. I'd also say screw that c-wire, you really don't need it with an advanced thermostat like the nest.
The Nest compatibility tool says the four wires I have should be good, but I wanted to be sure.
 

mmack44

New member
Apr 10, 2007
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Look at your thermostat wire bundle, most of the time there a spare wire in the bundle. If so use it to connect to c terminal in your furnace. You then have the c wire for your nest.
 

caseygreene

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Sep 6, 2017
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We use HVAC unit to cool down things through the hottest days. When looking to reduce monthly utility bills, owning the right air conditioner unit is only half the battle. It is equally important to ensure that your unit is properly serviced and maintained. Having a regularly serviced HVAC unit will reduce your monthly bills, improve efficiency so your equipment won’t have to work as hard, extend the life of your equipment, and result in fewer breakdowns or failures. One can visit heating system repair NJ for help or take advice of air specialists for your problem.
 

Get Buckets

Well-known member
Nov 4, 2007
4,532
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We use HVAC unit to cool down things through the hottest days. When looking to reduce monthly utility bills, owning the right air conditioner unit is only half the battle. It is equally important to ensure that your unit is properly serviced and maintained. Having a regularly serviced HVAC unit will reduce your monthly bills, improve efficiency so your equipment won’t have to work as hard, extend the life of your equipment, and result in fewer breakdowns or failures. One can visit heating system repair NJ for help or take advice of air specialists for your problem.

Good to know catpaw has me covered on kosher wedding catering in Boca Raton and HVAC in New Jersey.
 
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Xception

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Apr 17, 2007
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My unit doesn't have any underwire, how I fix it? If there's excess dew around the drain pan, will it damage the underwire? Also having trouble with oversized unit leaning to one side, should I be concerned? TIA