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Smart Vents - good or bad idea?

7K views 21 replies 10 participants last post by  fliks  
#1 ·
I am about to have my thermostat changed to a Nest Learning Thermostat and thinking of having temperature sensor and smart vents in various rooms so they can open and close when one room gets too hot. I was told that when air travel is controlled at the vents the ones which are closed cause back air pressure which shortens the life of the heating system. Is this true? Any thoughts, plus or minus you can offer on this setup would be highly appreciated. Thank you in advance.
 
#2 ·
They are a terrible idea.
Installing a Nest is equally as bad.
 
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#4 ·
Nest is an unreliable thermostat. It has damaged systems and even started fires.

Smart vents choke the system down and cause high resistance in system and will damage your equipment.
 
#6 ·
In my experience, I’ve had more problems with Nest than any other thermostat. I refuse to use them with equipment we install. Too many problems to list.

Smart vents will cause high static pressure and noisy registers.
 
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#13 ·
I had a customer that had 5 nests in her house. She couldn’t get them to function properly at all. Took them all out and installed Honeywell TH8321WF1001. When I asked her what does she want me to do with them all of the nests,she told me to keep them. So I did what any good tech would do, threw them in the trash.

I’ve seen a nest tstat short cycle a unit so fast it would trip the main breaker in the house.

Do yourself a favor, LISTEN TO US, and don’t use a nest and go with something else.
 
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#14 ·
Thanks a lot. I am giving up on Nest and looking into ecobee and Honeywell. Any views on ecobee?

I was considering Nest since if it is installed along with Nest Protect (smoke and CO detector) it can be setup so Protect can tell the thermostat to shutt off the heater when there is an emergency. But then, seeing how detecors give falls alarms I think having the operation of a heater at the mercy of a smoke detector could soon be troublesome...
 
#17 ·
Look into non-UL listed carbon monoxide (CO) detectors. The UL listed models (not sure if the Nest is or not) are set to only alarm after being exposed to 70 PPM or above for several continuous hours. So theoretically you could be exposed to 69 PPM continuously and never get an alarm. As a comparison most fire departments will not enter a building with CO levels that high without breathing apparatus.
The UL listed models are intended to only be a major failure type device.
Look into low level CO alarms. They will give you an actual reading to see.
 
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#16 ·
Ecobee has been highly regarded on this forum. I have installed many and have had only a few failures.

However, I have seen some recent failures of Ecobee that make me reconsider if it is of very good quality.

The Honeywell vision pro and Honeywell Iaq lines have been of high quality.

Both nest and Ecobee are technology company’s without any ties in hvac. However Ecobee has been partnering with some manufacturers recently so they will have a leg up on Nest.

When it comes to Honeywell, they don’t only produce thermostats but also many controls and parts for hvac equipment, so they understand hvac equipment much better than just a technology company.
 
#18 ·
If you are interested in zoning your home, just about every hvac manufacturer makes their own zoning systems, from fairly basic to fully modulating. The hard part is finding a contractor who can actually make it work seamlessly and silently, lots of threads on here about zoning gone badly.
 
#20 ·
I have a Armstrong Ultra SX 80 Natural Gas Furnace and have contacted them to see what they offer for zoning if anything at all. Based on information I received on this thread, itt seems I would have to wait till the system needs to be replaced and then buy one with the features I want.
 
#21 ·
I have a Armstrong Ultra SX 80 Natural Gas Furnace and have contacted them to see what they offer for zoning if anything at all. Based on information I received on this thread, itt seems I would have to wait till the system needs to be replaced and then buy one with the features I want.
along with major duct modifications!
 
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